Department Directory

Faculty

Dr. Ataur Chowdhury

Associate Professor, Physics Academic Advisor

archowdhury@alaska.edu | 907-474-6109

118 Reichardt Bldg

Special Interests/Research: Condensed Matter physics, nanotechnology

Learn more about Dr. Ataur Chowdhury

Dr. Mark Conde

Associate Professor, Physics Academic Advisor

mgconde@alaska.edu | 907-474-7741

706F Elvey Bldg

Special Interests/Research: Auroral processes and space �þ��Ƶ

Dr. Peter A. Delamere

Professor, Physics Academic Advisor

padelamere@alaska.edu | 907-474-6442

708 Elvey Bldg/108 Reichardt Bldg

Special Interests/Research: Comparative magnetospheric physics with emphasis on the numerical simulation of space plasmas using hybrid (kinetic ion, fluid electron) and multi-fluid techniques

Learn more about Dr. Peter A. Delamere

Selected Publications

Delamere, P. A., R. J. Wilson, S. Wing, A. R. Smith, B. Mino, C. Spitler, P. Damiano, K. Sorathia, A. Sciola, J. Caggiano, J. R. Johnson, X. Ma, F. Bagenal, B. Zhang, F. Allegrini, R. Ebert, G. Clark, and O. Brambles, Signatures of open magnetic flux in Jupiter’s dawnside magnetotail, AGU Advances, 5(2), e2023AV001,111,
doihttps://doi.org/10.1029/2023AV001111, e2023AV001111 2023AV001111, 2024.
Cao, X., X. Chu, H.-W. Hsu, H. Cao, W. Sun, L. Liuzzo, J. Halekas, C. Paty, F. Chu, O. Agiwal, L. Blum, Crary, I. J. Cohen, P. Delamere, M. Hofstadter, G. Hospodarsky, C. John, P. Kollmann, E. Kronberg, W. Kurth, L. Lamy, D. Lin, W. Li, X. Ma, D. Malaspina, M. Morooka, T. Nordheim, F. Postberg, Poppe, C. Richard, S. Ruhunusiri, K. Soderlund, J. O’Donoghue, and F. Plaschke, Science return of probing magnetospheric systems of ice giants, Frontiers in Astronomy and Space Sciences, 11, 1203705, doi10.3389/fspas.2024.1203705, 2024.
Chen, J., B. Zhang, P. A. Delamere, Z. Yao, and O. Brambles, The Dynamic Response of Jovian Magnetotail Reconnection to Enhanced Solar Wind Ram Pressure, ApJ, 969(2), 137, doi10.3847/1538- 4357/ad509c10.22541/essoar.168677210.01991470/v1, 2024.
Gu, W. D., Z. H. Yao, Y. Wei, T. S. Qin, B. Z. Zhang, Y. Xu, W. R. Dunn, P. A. Delamere, and Y. N. Chen, A Survey of Magnetic Field Line Curvature in Jovian Dawn Magnetodisc, Geophys. Res. Lett., 51(1), e2023GL106971, doi10.1029/2023GL106971, 2024.
Ma, X., P. Delamere, K. Nykyri, A. Otto, S. Eriksson, L. Chai, B. Burkholder, A. Dimmock, Y.-L. Liou, and Kavosi, Density and Magnetic Field Asymmetric Kelvin-Helmholtz Instability, Journal of Geophysical Research (Space Physics), 129(3), e2023JA032234, doi10.1029/2023JA032234, 2024.
Sarkango, Y., J. R. Szalay, A. H. Sulaiman, P. A. Damiano, D. J. McComas, J. Rabia, P. A. Delamere, J. Saur, Clark, R. W. Ebert, and F. Allegrini, Resonant Plasma Acceleration at Jupiter Driven by Satellite Magnetosphere Interactions, Geophys. Res. Lett., 51(5), e2023GL107431, doi10.1029/2023GL107431, 2024.
Zhang, B., Z. Yao, O. J. Brambles, P. A. Delamere, W. Lotko, D. Grodent, B. Bonfond, J. Chen, K. A. Sorathia, V. G. Merkin, and J. G. Lyon, A unified framework for global auroral morphologies of different planets, Nature Astronomy, doi10.1038/s41550-024-02270-3, 2024.
Chen, J., B. Zhang, D. Lin, P. A. Delamere, Z. Yao, O. Brambles, K. A. Sorathia, V. G. Merkin, and J. G. Lyon, Prediction of Axial Asymmetry in Jovian Magnetopause Reconnection, Geophys. Res. Lett., 50(9), e2022GL102577, doi10.1029/2022GL102577, 2023.
Crary, F., P. Delamere, C. Dong, G. Hospadarsky, S. Hsu, P. Kollmann, A. Kotova, T. Livengood, Retherford, J. Szalay, M. Vogt, and L. Wang, The Magnetosphere of Jupiter: Moving from Discoveries Towards Understanding, in Bulletin of the American Astronomical Society, vol. 55, p. 081, doi10.3847/25c2cfeb.1290f1ff, 2023.
Damiano, P. A., P. A. Delamere, E. H. Kim, J. R. Johnson, and C. S. Ng, Electron Energization by Inertial Alfven Waves in Density Depleted Flux Tubes at Jupiter, ́ Geophys. Res. Lett., 50(5), e2022GL102467, doi10.1029/2022GL102467, 2023.
Feng, E., B. Zhang, Z. Yao, P. A. Delamere, Z. Zheng, W. R. Dunn, and S.-Y. Ye, Variation of the Jovian Magnetopause Under Constant Solar Wind Conditions: Significance of Magnetodisc Dynamics, Geophys. Res. Lett., 50(12), e2023GL104046, doi10.1029/2023GL104046, 2023.
Gu, W. D., Z. H. Yao, D. X. Pan, Y. Xu, B. Zhang, P. A. Delamere, S. Y. Fu, L. Xie, S. Y. Ye, N. Chen, W. R. Dunn, and Y. Wei, Hourly Periodic Variations of Ultralow-Frequency (ULF) Waves in Jupiter’s Magnetosheath, Journal of Geophysical Research (Planets), 128(2), e2022JE007625, doi10.1029/2022JE007625, 2023.
Schok, A. A., P. A. Delamere, B. Mino, P. A. Damiano, B. Zhang, A. Sciola, K. Sorathia, S. Wing, R. Johnson, X. Ma, Z. Yao, and O. Brambles, Periodicities and Plasma Density Structure of Jupiter’s Dawnside Magnetosphere, Journal of Geophysical Research (Planets), 128(2), e2022JE007637, doi10.1029/2022JE007637, 2023.
Vu, A., T. Z. Liu, H. Zhang, and P. Delamere, Parameter Dependencies of Early-Stage Tangential Discontinuity-Driven Foreshock Bubbles in Local Hybrid Simulations, Journal of Geophysical Research (Space Physics), 128(2), e2022JA030815, doi10.1029/2022JA030815, 2023.
Xu, Y., Z. H. Yao, B. Zhang, P. A. Delamere, L. C. Ray, W. R. Dunn, S. V. Badman, E. H. Feng, Z. Q. Zheng, S. J. Bolton, D. Grodent, B. Bonfond, and Y. Wei, On the Relation Between Jupiter’s Aurora and the Dawnside Current Sheet, Geophys. Res. Lett., 50(13), e2023GL104123, doi10.1029/2023GL104123, 2023.
Coffin, D., P. Damiano, P. Delamere, J. Johnson, and C.-S. Ng, Broadband Energization of Superthermal Electrons in Jupiter’s Inner Magnetosphere, Journal of Geophysical Research (Space Physics), 127(8), e30528, doi10.1029/2022JA030528, 2022.
Feng, E., B. Zhang, Z. Yao, P. A. Delamere, Z. Zheng, O. J. Brambles, S.-Y. Ye, and K. A. Sorathia, Dynamic Jovian Magnetosphere Responses to Enhanced Solar Wind Ram Pressure: Implications for Auroral Activities, Geophys. Res. Lett., 49(19), e2022GL099858, doi10.1029/2022GL099858, 2022.
Lorch, C. T. S., L. C. Ray, R. J. Wilson, F. Bagenal, F. Crary, P. A. Delamere, P. A. Damiano, C. E. J. Watt, and F. Allegrini, Evidence of Alfvenic Activity in Jupiter’s Mid-To-High Latitude Magnetosphere, Journal of Geophysical Research (Space Physics), 127(6), e29853, doi10.1029/2021JA029853, 2022.
Ma, X., P. A. Delamere, A. Schok, S. Wing, J. R. Johnson, and Y.-L. Liou, Jupiter’s Sheared Flow Unstable Magnetopause Boundary Observed by Juno, Journal of Geophysical Research (Space Physics), 127(10), e2022JA030719, doi10.1029/2022JA030719, 2022.
Ng, C. S., B. R. Neupane, P. A. Delamere, and P. A. Damiano, A Turbulent Heating Model Combining Diffusion and Advection Effects for Giant Planet Magnetospheres, Geophys. Res. Lett., 49(2), e96662, doi10.1029/2021GL096662, 2022.
Szalay, J. R., H. T. Smith, E. J. Zirnstein, D. J. McComas, L. J. Begley, F. Bagenal, P. A. Delamere, J. Wilson, P. W. Valek, A. R. Poppe, Q. Nenon, F. Allegrini, R. W. Ebert, and S. J. Bolton, Water Group Pickup Ions From Europa-Genic Neutrals Orbiting Jupiter, Geophys. Res. Lett., 49(9), e98111, doi10.1029/2022GL098111, 2022.
Vu, A., T. Z. Liu, H. Zhang, and P. Delamere, Hybrid Simulations of a Tangential Discontinuity-Driven Foreshock Bubble Formation in Comparison With a Hot Flow Anomaly Formation, Journal of Geophysical Research (Space Physics), 127(6), e29973, doi10.1029/2021JA029973, 2022.
Wing, S., M. F. Thomsen, J. R. Johnson, D. G. Mitchell, R. C. Allen, X. Ma, and P. A. Delamere, The Roles of Flux Tube Entropy and Effective Gravity in the Inward Plasma Transport at Saturn, ApJ, 937(1), 42, doi10.3847/1538-4357/ac85b2, 2022.
Zhang, H., Q. Zong, H. Connor, P. Delamere, G. Facsko, D. Han, H. Hasegawa, E. Kallio, ́ A. Kis, G. Le, Lembege, Y. Lin, T. Liu, K. Oksavik, N. Omidi, A. Otto, J. Ren, Q. Shi, D. Sibeck, and S. Yao, Dayside Transient Phenomena and Their Impact on the Magnetosphere and Ionosphere, Space Sci. Rev., 218(5), 40, doi10.1007/s11214-021-00865-0, 2022.
Delamere, P. A., N. P. Barnes, X. Ma, and J. R. Johnson, The Kelvin-Helmholtz Instability from the Perspective of Hybrid Simulations, Frontiers in Astronomy and Space Sciences, 8, 211, doi10.3389/fspas.2021.801824, 2021.
Delamere, P. A., C. S. Ng, P. A. Damiano, B. R. Neupane, J. R. Johnson, B. Burkholder, X. Ma, and Nykyri, Kelvin-Helmholtz Related Turbulent Heating at Saturn’s Magnetopause Boundary, Journal of Geophysical Research (Space Physics), 126(2), e28479, doi10.1029/2020JA028479, 2021.
Eriksson, S., X. Ma, J. L. Burch, A. Otto, S. Elkington, and P. A. Delamere, MMS Observations of Double Mid-Latitude Reconnection Ion Beams in the Early Non-Linear Phase of the Kelvin-Helmholtz Instability, Frontiers in Astronomy and Space Sciences, 8, 188, doi10.3389/fspas.2021.760885, 2021.
Ma, X., P. Delamere, K. Nykyri, B. Burkholder, S. Eriksson, and Y.-L. Liou, Ion dynamics in the meso-scale 3-D Kelvin-Helmholtz instability: perspectives from test particle simulations, Frontiers in Astronomy and Space Sciences, 8, 185, doi10.3389/fspas.2021.758442, 2021.
Johnson, J. R., S. Wing, P. Delamere, S. Petrinec, and S. Kavosi, Field Aligned Currents in Auroral Vortices, Journal of Geophysical Research (Space Physics), 126(2), e28583, doi10.1029/2020JA028583, 2021.
Neupane, B. R., P. A. Delamere, X. Ma, C. S. Ng, B. Burkholder, and P. Damiano, On The Nature of Turbulent Heating and Radial Transport in Saturn’s Magnetosphere, Journal of Geophysical Research (Space Physics), 126(1), e27986, doi10.1029/2020JA027986, 2021.
Nykyri, K., X. Ma, B. Burkholder, R. Rice, J. R. Johnson, E. K. Kim, P. Delamere, A. Michael, K. Sorathia, Lin, S. Merkin, S. Fuselier, J. Broll, O. Le Contel, D. Gershman, I. Cohen, B. Giles, R. J. Strangeway, T. Russell, and J. L. Burch, MMS Observations of the Multiscale Wave Structures and Parallel Electron Heating in the Vicinity of the Southern Exterior Cusp, Journal of Geophysical Research (Space Physics), 126(3), e27698, doi10.1029/2019JA027698, 2021.
Wilson, R. J., D. B. Reisenfeld, P. A. Delamere, R. C. Allen, and T. A. Cassidy, Revisiting magnetospheric CAPS TOF data post Cassini, Icarus, 357, 114245, doi10.1016/j.icarus.2020.114245, 2021.
Zhang, B., P. A. Delamere, Z. Yao, B. Bonfond, D. Lin, K. A. Sorathia, O. J. Brambles, W. Lotko, J. S. Garretson, V. G. Merkin, D. Grodent, W. R. Dunn, and J. G. Lyon, How Jupiter’s unusual magnetospheric topology structures its aurora, Science Advances, 7(15), doi10.1126/sciadv.abd1204, 2021.
Burkholder, B. L., P. A. Delamere, J. R. Johnson, and C. S. Ng, Identifying Active Kelvin- Helmholtz Vortices on Saturn’s Magnetopause Boundary, Geophys. Res. Lett., 47(1), e84206, doi10.1029/2019GL084206, 2020.

Coffin, D., P. Delamere, and P. Damiano, Implications for Magnetosphere-Ionosphere Coupling From Jupiter’s System IV Quasi-Period, Journal of Geophysical Research (Space Physics), 125(5), e27347, doi10.1029/2019JA027347, 2020.
Allen, R. C., C. P. Paranicas, F. Bagenal, S. K. Vines, D. C. Hamilton, F. Allegrini, G. Clark, P. A. Delamere, T. K. Kim, S. M. Krimigis, D. G. Mitchell, T. H. Smith, and R. J. Wilson, Energetic Oxygen and Sulfur Charge States in the Outer Jovian Magnetosphere: Insights From the Cassini Jupiter Flyby, Geophys. Res. Lett., 46(21), 11,709–11,717, doi10.1029/2019GL085185, 2019.
Elliott, H. A., D. J. McComas, E. J. Zirnstein, B. M. Randol, P. A. Delamere, G. Livadiotis, F. Bagenal, N. P. Barnes, S. A. Stern, L. A. Young, C. B. Olkin, J. Spencer, H. A. Weaver, K. Ennico, G. R. Gladstone, C. W. Smith, N. Horizons Plasma, and Particle Team, Slowing of the Solar Wind in the Outer Heliosphere, ApJ, 885(2), 156, doi10.3847/1538-4357/ab3e49, 2019.
Guo, R. L., Z. H. Yao, N. Sergis, Y. Wei, X. J. Xu, A. J. Coates, P. A. Delamere, E. Roussos, C. S. Ar- ridge, J. H. Waite, N. Krupp, D. Mitchell, J. Burch, M. K. Dougherty, and W. X. Wan, Long-standing Small-scale Reconnection Processes at Saturn Revealed by Cassini, ApJ, 884(1), L14, doi10.3847/2041- 8213/ab4429, 2019.
Kollmann, P., M. E. Hill, R. C. Allen, R. L. McNutt, L. E. Brown, N. P. Barnes, P. Delamere, G. Clark, G. B. Andrews, N. Salazar, J. Westlake, G. Romeo, J. Vandegriff, M. Kusterer, D. Smith, K. Nelson, S. Jaskulek, R. B. Decker, A. F. Cheng, S. M. Krimigis, C. M. Lisse, D. G. Mitchell, H. A. Weaver, H. A. Elliott, E. Fattig, G. R. Gladstone, P. W. Valek, S. Weidner, J. Kammer, F. Bagenal, M. Horanyi, D. Kaufmann, A. Harch, C. B. Olkin, M. R. Piquette, J. R. Spencer, L. A. Young, K. Ennico, M. E. Summers, and S. A. Stern, Pluto’s Interaction With Energetic Heliospheric Ions, Journal of Geophysical Research (Space Physics), 124(9), 7413–7424, doi10.1029/2019JA026830, 2019a.
Barnes, N. P., P. A. Delamere, D. F. Strobel, F. Bagenal, D. J. McComas, H. A. Elliott, P. Valek, H. Weaver, K. Ennico, L. A. Young, and S. Stern, Constraining the IMF at Pluto using New Horizons SWAP data and Hybrid Simulations, Journal of Geophysical Research: Space Physics, doi10.1029/2018JA026083, 2019.
Burkholder, B. L., A. Otto, P. A. Delamere, and J. E. Borovsky, Magnetic connectivity in the corona as a source of structure in the solar wind, Journal of Geophysical Research: Space Physics, 124(1), 32–49, doi10.1029/2018JA026132, 2019.
Damiano, P. A., P. A. Delamere, B. Stauffer,C.-S. Ng, and J. R. Johnson, Kinetic Simulations of Electron Acceleration by Dispersive Scale Alfven Waves in Jupiter’s Magnetosphere, ´ Geophys. Res. Lett., 46, 3043–3051, doi10.1029/2018GL081219, 2019.
Kollmann, P., M. E. Hill, J. McNutt, R. L., L. E. Brown, R. C. Allen, G. Clark, B. Andrews, N. Salazar, J. Westlake, G. Romeo, J. Vandegriff, M. Kusterer, D. Smith, S. Jaskulek, R. Decker, A. F. Cheng, S. M. Krimigis, C. M. Lisse, D. G. Mitchell, H. A. Weaver, P. Delamere, H. A. Elliott, E. Fattig, G. R. Gladstone, P. W. Valek, S. Weidner, F. Bagenal, M. Horanyi, J. A. Kammer, D. Kaufmann, C. B. Olkin, M. R. Piquette, J. R. Spencer, A. J. Steffl, S. A. Stern, L. A. Young, K. Ennico, I. R. Linscott, D. F. Strobel, M. E. Summers, and J. R. Szalay, Suprathermal Ions in the Outer Heliosphere, ApJ, 876(1), 46, doi10.3847/1538-4357/ab125f, 2019.
Ma, X., P. A. Delamere, M. F. Thomsen, A. Otto, B. Neupane, B. Burkholder, and K. Nykyri, Flux tube entropy and specific entropy in Saturn’s magnetosphere, Journal of Geophysical Research: Space Physics, doi 10.1029/2018JA026150, 2019.
Neupane, B. R., P. A. Delamere, R. J. Wilson, and X. Ma, Quantifying Mass and Magnetic Flux Transport in Saturn’s Magnetosphere, Journal of Geophysical Research (Space Physics), 124, 1916–1926, doi10.1029/2018JA026022, 2019.
Stauffer, B. H., P. A. Delamere, X. Ma, B. R. Neupane, and B. L. Burkholder, Hybrid Simulations of Magnetodisc Transport Driven by the Rayleigh-Taylor Instability, Journal of Geophysical Research (Space Physics), 124(7), 5107–5120, doi10.1029/2018JA026420, 2019.
Tsuchiya, F., R. Arakawa, H. Misawa, M. Kagitani, R. Koga, F. Suzuki, R. Hikida, K. Yoshioka, A. Steffl, F. Bagenal, P. Delamere, T. Kimura, Y. Kasaba, G. Murakami, I. Yoshikawa, A. Yamazaki, and M. Yoneda, Azimuthal Variation in the Io Plasma Torus Observed by the Hisaki Satellite From 2013 to 2016, Journal of Geophysical Research (Space Physics), 124(5), 3236–3254, doi10.1029/2018JA026038, 2019.
Delamere P. A. and Burkholder B. and Ma X., Three-dimensional hybrid simulation of viscous-like pro- cesses at Saturn’s magnetopause boundary, Geophysical Research Letters, doi10.1029/2018GL078922, 2018.
Guo, R. L., Z. H. Yao, Y. Wei, L. C. Ray, I. J. Rae, C. S. Arridge, A. J. Coates, P. A. Delamere, N. Ser- gis, P. Kollmann, D. Grodent, W. R. Dunn, J. H. Waite, J. L. Burch, Z. Y. Pu, B. Palmaerts, and M. K. Dougherty, Rotationally driven magnetic reconnection in Saturn’s dayside, Nature Astronomy, doi10.1038/s41550-018-0461-9, 2018. Kimura, T., Y. Hiraki, C. Tao, F. Tsuchiya,
P. A. Delamere, K. Yoshioka, G. Murakami, A. Yamazaki, H. Kita, S. V. Badman, K. Fukazawa, I. Yoshikawa, and M. Fujimoto, Response of Jupiter’s Aurora to Plasma Mass Loading Rate Monitored by the Hisaki Satellite During Volcanic Eruptions at Io, Journal of Geophysical Research: Space Physics, 123(3), 1885–1899, doi10.1002/2017JA025029, 2018.
Ng, C. S., P. A. Delamere, V. Kaminker, and P. A. Damiano, Radial transport and plasma heating in Jupiter’s magnetodisc, Journal Geophysical Research, doi: 10.1029/2018JA025345, 2018.
Zhang, B., P. A. Delamere, X. Ma, B. Burkholder, M. Wiltberger, J. G. Lyon, V. G. Merkin, and K. A. Sorathia, Asymmetric Kelvin-Helmholtz Instability at Jupiter’s Magnetopause Boundary: Implications for Corotation-Dominated Systems, Geophys. Res. Lett., 45, 56–63, doi10.1002/2017GL076315, 2018.

Dr. Michael Hull

Assistant Professor of Physics, Physics Academic Advisor

mmhull2@alaska.edu | 907-474-6106

120 Reichardt Building

Special Interests/Research: Patterns and variability in student reasoning; improving the effectiveness of online asynchronous physics instruction; assessing and improving student interest in physics.

Learn more about Dr. Michael Hull

Peer Reviewed Publications:

·&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;Hull, M. M. & Pokharel, K. R. (2024) Learning about Radioactivity via Synthetic Groupwork in Introductory Physics. PERC 2024 Proceedings.

·&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;Yasuda, J.-i., Hull, M. M., & Kojima, K. (2024) Designing a computerized adaptive testing chain for the Force Concept Inventory. PERC 2024 Proceedings.

·&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;Becker, M. and Hull, M. M. (2024) Thermische Energie mit dem BB-Bag veranschaulichen. In Hopf, M. January 2024 issue of Plus Lucis: Energie.

·&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;Hull, M. M., Budimaier, F., & Krebs, R. E. (2024) Half-life and Lifeworld: The Omission of School Knowledge in Writing about Radioactive Waste. International Journal of Physics and Chemistry Education.

·&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;Hull, M. M., Yasuda, J.-i., and Mae, N. (2024) A Methodology for Generating Subquestions for the Force Concept Inventory (and Other Research-Based Assessments). International Journal of Physics and Chemistry Education.

·&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;&�Բ��;Yasuda, J.-i., Hull, M. M., & Mae, N. (2023) Visualizing depth of student conceptual understanding using subquestions and alluvial diagrams. Physical Review Physics Education Research.

Dr. David Newman (Retired from teaching 2022)

Professor

denewman@alaska.edu | 907-474-7858

112 Reichardt Bldg

Special Interests/Research: Complex systems, turbulence, nonlinear dynamics and fusion plasma physics

Learn more about Dr. David Newman (Retired from teaching 2022)

Selected Publications

JA Mier, R Sánchez, D.E. Newman, Chaos, Solitons & Fractals 140, 110117, (2020), Tracer particle transport dynamics in the diffusive sandpile cellular automaton.
JM Reynolds-Barredo, D.E. Newman, BA Carreras Electric Power Systems Research 182, 106260, (2020), Optimized implementation of power dispatch in the OPA model and its implications for dispatch sensitivity for the WECC power network
B Carreras, JM Reynolds-Barredo, D. Newman, Proceedings of the 53rd Hawaii International Conference on System Sciences, (2020), The Impact of Incorporating Wind Energy in the Electric Grid
Benjamin A. Carreras, José M. Reynolds-Barredo, Ian Dobson, and David E. Newman, Critical behavior of power transmission network complex dynamics in the OPA model, Chaos 29, 033103 (2019);
Benjamin A Carreras, Jose M Reynolds-Barredo, Ian Dobson, David E Newman, Validating the OPA cascading blackout model on a 19402 bus transmission network with both mesh and tree structures, in IEEE Explore, Fifty Second Hawaii International Conference on System Sciences, Hawaii, January 2019
R Sánchez, DE Newman, JA Mier, Modeling transport across the running-sandpile cellular automaton by means of fractional transport equations, Physical Review E 97 (5), 052123
R Sánchez, DE Newman, A Primer on Complex Systems: With Applications to Astrophysical and Laboratory Plasmas (Lecture Notes in Physics), Lecture Notes in Physics (Book 943) , 404 pages, Springer; 1st ed. 2018 edition (April 1, 2018) ISBN-10: 9402412271
D Ogata, DE Newman, R Sánchez, Transport dynamics of self-consistent, near-marginal drift-wave turbulence. II. Characterization of transport by means of passive scalars, Physics of Plasmas 24 (7), 072310 (2017)
D Ogata, DE Newman, R Sánchez, Transport dynamics of self-consistent, near-marginal drift-wave turbulence. I. Investigation of the ability of external flows to tune the non-diffusive dynamics, Physics of Plasmas 24 (7), 072309 (2017)
D Ogata, DE Newman, R Sánchez, Investigation of the interaction between competing types of nondiffusive transport in drift wave turbulence, Physics of Plasmas 24 (5), 052307 (2017)
I Dobson, D.E. Newman, Cascading blackout overall structure and some implications for sampling and mitigation, International Journal of Electrical Power & Energy Systems 86, 29-32 (2017)

Dr. Chung-Sang Ng

Associate Professor, Physics Academic Advisor

cng2@alaska.edu | 907-474-7367

706E Elvey Building

Special Interests/Research: Theoretical and computational plasma physics, with applications in space and fusion plasmas

Learn more about Dr. Chung-Sang Ng

Selected Publications

J. McClung, M. Franciscovich, K. Germaschewski, and C. S. Ng, High-Resolution Particle-In-Cell Simulations of Two-Dimensional Bernstein-Greene-Kruskal Modes, Physics of Plasmas, 31, 042302 (2024).
Z.-K. Xie, Q.-G. Zong, C. Yue, X.-Z. Zhou, Z.-Y. Liu, J.-S. He, Y.-X. Hao, C. S. Ng, H. Zhang, S.-T. Yao, C. Pollock, G, Le, R. Ergun & P.-A. Lindqvist, Electron Scale Coherent Structure as Micro Accelerator in the Earth’s Magnetosheath, Nature Communications, 15, 886 (2024).
P. A. Damiano, P. A. Delamere, E.-H. Kim, J. R. Johnson, and C. S. Ng, Electron Energization by Inertial Alfvén Waves in Density Depleted Flux Tubes at Jupiter, Geophysical Research Letters, 50, e2022GL102467 (2023).
D. Coffin, P. A. Damiano, P. A. Delamere, J. R. Johnson, and C. S. Ng, Broadband Energization of Superthermal Electrons in Jupiter’s Inner Magnetosphere, Journal of Geophysical Research, 127, e2022JA030528 (2022).
C. S. Ng, B. R. Neupane, P. A. Delamere, and P. A. Damiano, A Turbulent Heating Model Combining Diffusion and Advection Effects for Giant Planet Magnetospheres, Geophysical Research Letters, 49, e2021GL096662 (2022).
C. S. Ng, and A. Bhattacharjee, Landau Modes are Eigenmodes of Stellar Systems in the Limit of Zero Collisions, Astrophys. J., 923, 271 (2021).
B. R. Neupane, P. A. Delamere, X. Ma, C. S. Ng, B. L. Burkholder, and P. A., Damiano, On The Nature of Turbulent Heating and Radial Transport in Saturn's Magnetosphere, Journal of Geophysical Research, 126, e2020JA027986 (2021).
P. A. Delamere, C. S. Ng, P. A., Damiano, B. R. Neupane, J. R. Johnson, B. L. Burkholder, X. Ma, and K. Nykyri, Kelvin–Helmholtz‐Related Turbulent Heating at Saturn's Magnetopause Boundary, Journal of Geophysical Research, 126, e2020JA028479 (2021).
C. S. Ng, Kinetic Flux Ropes: Bernstein-Greene-Kruskal Modes for the Vlasov-Poisson-Ampère System, Physics of Plasmas, 27, 022301 (2020).
Burkholder, B. L., P. A. Delamere, J. R. Johnson, and C. S. Ng, Identifying Active Kelvin- Helmholtz Vortices on Saturn’s Magnetopause Boundary, Geophys. Res. Lett., 47(1), e84206, doi10.1029/2019GL084206, 2020.
Kaminker, V., P. A. Delamere, C. S. Ng, T. Dennis, A. Otto, and X. Ma, Local time dependence of turbulent magnetic fields in Saturn’s magnetodisc, Journal of Geophysical Research (Space Physics), 122, 3972– 3984, doi10.1002/2016JA023834, 2017.
C. S. Ng and L. Lin, Distribution of Nanoflares as Spatially Resolved Current Sheets in the Solar Corona, ASP Conf. Ser., 484, 162 (2014).
L. Lin, C. S. Ng, and A. Bhattacharjee, Current Sheet Statistics in Three-Dimensional Simulations of Coronal Heating, ASP Conf. Ser., 474, 159 [http://arxiv.org/abs/1302.0567] (2013).
C. Black, K. Germaschewski, A. Bhattacharjee, and C. S. Ng, Discrete Kinetic Eigenmode Spectra of Electron Plasma Oscillations in Weakly Collisional Plasma: A Numerical Study, Phys. Plasmas, 20, 012125 (2013).
A. S. Bains, M. Tribeche, and C. S. Ng, Dust-acoustic wave modulation in the presence of q-nonextensive electrons and/or ions in dusty plasma, Astrophys. Space Sci, 343, 621 (2013).
L. Lin, C. S. Ng, and A. Bhattacharjee, Large-Scale High-Lundquist Number Reduced MHD Simulations of the Solar Corona using GPU Accelerated Machines, accepted for publication in ASP Conference Series. [http://arxiv.org/abs/1109.6038] (2012).
A. R. Soto Chavez, A. Bhattacharjee, and C. S. Ng, Choros Wave Amplification: A Free Electron Laser in the Earth's Magnetosphere, Phys. Plasmas, 19, 010701 (2012).
C. S. Ng, L. Lin, and A. Bhattacharjee, High-Lundquist Number Scaling in Three-Dimensional Simulations of Parker’s Model of Coronal Heating, accepted for publication in Astrophys. J. [http://arxiv.org/abs/1106.0515] (2012).
C. S. Ng, S. J. Soundararajan, and E. Yasin, Electrostatic Structures in Space Plasmas: Stability of Two-dimensional Magnetic Bernstein-Greene-Kruskal Modes, accepted for publication in AIP Conf. Proc., [http://arxiv.org/abs/1106.4073] (2012).
C. S. Ng, and S. Ragunathan, High-Lundquist Number Resistive MHD Simulations of Turbulent Magnetic Reconnection with Secondary Island Formation and Enhanced Reconnection Rate, ASP Conference Series, 444, 124, [http://arxiv.org/abs/1106.0521], (2011).
C. S. Ng, A. Bhattacharjee, D. Munsi, P. A. Isenberg, and C. W. Smith, The Effect of Magnetic Turbulence Energy Spectra and Pickup Ions on the Heating of the Solar Wind, AIP Conf. Proc., 1302, 174 (2010).
C. S. Ng, L. Lin, and A. Bhattacharjee, Three-Dimensional Simulations of the Parker's Model of Solar Coronal Heating: Lundquist Number Scaling due to Random Photospheric Footpoint Motion, ASP Conference Series, 429, 201 (2010).
C. S. Ng and A. Bhattacharjee, Response to "Comment on 'Weakly collisional Landau damping and three-dimensional Bernstein-Greene-Kruskal modes: New results on old problems'", Phys. Plasmas 17, 054701 (2010).
C. S. Ng, A. Bhattacharjee, D. Munsi, P. A. Isenberg, and C. W. Smith, Kolmogorov versus Iroshnikov-Kraichnan spectra: Consequences for ion heating in the solar wind, J. Geophys. Res., 115, A02101 (2010).
X. H. Deng, M. Zhou, S. Y. Li, W. Baumjohann, M. Andre, N. Cornilleau, O. Santol?´k, D. I. Pontin, H. Reme, E. Lucek, A. N. Fazakerley, P. Decreau, P. Daly, R. Nakamura, R. X. Tang, Y. H. Hu, Y. Pang, J. Büchner, H. Zhao, A. Vaivads, J. S. Pickett, C. S. Ng, X. Lin, S. Fu, Z. G. Yuan, Z. W. Su, and J. F. Wang, Dynamics and waves near multiple magnetic null points in reconnection diffusion region, J. Geophys. Res., 114, A07216, doi:10.1029/2008JA013197 (2009).
C. S. Ng, D. Rosenberg, K. Germaschewski, A. Pouquet, and A. Bhattacharjee, A Comparison of spectral element and finite difference methods using statically refined nonconforming grids for the MHD island coalescence instability problem, ASP Conference Series, 406, 255 (2009).
C. S. Ng, D. Rosenberg, K. Germaschewski, A. Pouquet, and A. Bhattacharjee, A Comparison of Spectral Element and Finite Difference Methods Statically Refined Nonconforming Grids for the MHD Island Coalescence Instability Problem, Astrophys. J. Suppl., 177, 613 (2008).
C. S. Ng and A. Bhattacharjee, A Constrained Tectonics Model for Coronal Heating, Astrophys. J., 675, 899 (2008).
C. S. Ng, A. Bhattacharjee, S. Hu, Z. W. Ma, and K. Avinash, Generalizations of a nonlinear fluid model for void formation in dusty plasmas, Plasma Phys. Control. Fusion, 49, 1583 (2007).
C. S. Ng and A. Bhattacharjee, Anisotropic MHD Turbulence, AIP Conf. Proc., 932, 137 (2007).
K. Germaschewski, A. Bhattacharjee, and C. S. Ng, The Magnetic Reconnection Code: an AMR-based fully implicit simulation suite, ASP Conf. Ser., 359, 151 (2006).
C. S. Ng, A. Bhattacharjee, and F. Skiff, Weakly Collisional Landau Damping and Three-Dimensional Bernstein-Greene-Kruskal Modes: New Results on Old Problems, Phys. Plasmas, 13, 055903 (2006).
A. Bhattacharjee, C. S. Ng, K. Avinash, S. Hu, and Z. W. Ma, Nonlinear Theory and Simulation of Void Formation in Dusty Plasmas, AIP Conf. Proc. 799 145 (2005).
C. S. Ng and A. Bhattacharjee, Bernstein-Greene-Kruskal Modes in a Three-Dimensional Plasma, Phys. Rev. Lett., 95, 245004 (2005).
A. Bhattacharjee, K. Germaschewski, and C. S. Ng, Current Singularities: Drivers of Impulsive Reconnection, Phys. Plasmas, 12, 042305 (2005).

Dr. Doğacan Ozturk

Assistant Professor of Physics

dsozturk@alaska.edu

706A, Elvey Building

Special Interests/Research: Studies the coupled magnetosphere-ionosphere-thermosphere systems using numerical models and data analysis.

Learn more about Dr. Doğacan Ozturk

Xu, Zhonghua; Lessard, Marc; Kim, Hyomin; Hartinger, Michael; Deng, Yue; Welling, Daniel; Öztürk, Doğacan; Chi, Peter; Halford, Alexa; Turner, Drew; A Strategic Vision for Understanding Inter-Hemispheric Asymmetries, The Bulletin of the American Astronomical Society (2023), The Bulletin of the American Astronomical Society (BAAS)
Hartinger, Michael; Engebretson, Mark; Lu, Gang; Connors, Martin; McGranaghan, Ryan; Rigler, Josh; Shi, Xueling; Weygand, James; Schultz, Adam; Kim, Hyomin; Global Networks of Ground-Based Magnetometers Enable Cutting-Edge Heliophysics Research, Education, and Space Weather Operations, Bulletin of the AAS, 55, 3 (2023), American Astronomical Society
Ozturk, Dogacan; Lin, Dong; Gabrielse, Christine; Chen, Margaret; Grandin, Maxime; Sivadas, Nithin; Robinson, Robert; Garcia-Sage, Katherine; Damiano, Peter; Blum, Lauren; The Significance of Magnetospheric Precipitation for the Coupling of Magnetosphere-Ionosphere-Thermosphere Systems: Sources and Properties, Bulletin of the AAS (2023), Bulletin of the American Astronomical Society
Argall, Matthew; McGranaghan, Ryan; Smith, Andy; Klein, Kristopher; Bortnik, Jacob; Chen, Thomas Y; Ozturk, Dogacan; Hwang, Kyoung-Joo; Azari, Abigail; Keesee, Amy; Intelligent Missions in the Living Heliospheric System Observatory, Bulletin of the American Astronomical Society, 55, 3, 16 (2023)
Perry, Gareth; Ozturk, Dogacan Su; Cooper, Matthew; Kim, Hyomin; Ledvina, Vincent; Battams, Karl; Brandt, Laura; Musset, Sophie; Gallardo-Lacourt, Bea; Citizen science is a catalyst for scientific discovery in heliophysics, Bulletin of the American Astronomical Society, 55, 3, 314 (2023)
Zettergren, Matthew; Ozturk, Dogacan; Liu, Hanli; Huba, Joe; Deng, Yue; Snively, Jonathan; Fang, Tzu-Wei; Ridley, Aaron; Maute, Astrid; Zawdie, Kate; Physics-based Ionosphere-Thermosphere-Mesosphere Modeling: Status and Future Needs, Bulletin of the American Astronomical Society, 55, 3, 26 (2023)
Battams, Karl; Ozturk, Dogacan; Sanka, Ramanakumar; Mantha, Kameswara Bharadwaj; Sustainability Support for Heliophysics Citizen Science Projects, Bulletin of the American Astronomical Society, 55, 3, 26 (2023)
Vines, Sarah; Anderson, Brian; Waters, Colin L; Allen, Robert C; Maute, Astrid; Kunduri, Bharat; Paxton, Larry; Strangeway, Robert J; Lin, Dong; Robinson, Robert; Beyond ampere‐next: Envisioning the next system of global high‐latitude electrodynamics, Bulletin of the American Astronomical Society, 55, 3, 420 (2023)
MacDonald, Elizabeth; Halford, Alexa; Ledvina, Vincent; Rowland, Douglas; Ozturk, Dogacan; di Mare, Francesca; Brandt, Laura; Mooney, Margaret; Lach, Donna; Kim, Hyomin; Science for all: the case for citizen science in all NASA missions, Bulletin of the American Astronomical Society, 55, 3, 255 (2023).
Ozturk, Dogacan; Lin, Dong; Gabrielse, Christine; Chen, Margaret; Grandin, Maxime; Sivadas, Nithin; Robinson, Robert; Garcia-Sage, Katherine; Damiano, Peter; Blum, Lauren; The Significance of Magnetospheric Precipitation for the Coupling of Magnetosphere-Ionosphere-Thermosphere Systems: Effects on Ionospheric Conductance, Bulletin of the AAS (2023), Bulletin of the American Astronomical Society
Smith, AR; Ozturk, DS; Delamere, P; Lu, G; Kim, H; Investigating the interhemispheric asymmetry in Joule heating during the 2013 St. Patrick's Day geomagnetic storm, Space Weather, 21, 9, e2023SW003523 (2023)
Noh, Sung Jun; Kim, Hyomin; Ozturk, Dogacan; Kuzichev, Ilya; Xu, Zhonghua; Zhang, Hui; Vu, Andrew; Liu, Terry; Weygand, James M; Hartinger, Michael D; Interhemispheric observations of ULF waves caused by foreshock transients under quiet solar wind conditions, Journal of Geophysical Research: Space Physics, 128, 9, e2023JA031596 (2023)
Meng, Xing; Ozturk, Dogacan S; Verkhoglyadova, Olga P; Varney, Roger H; Reimer, Ashton S; Semeter, Joshua L; Kaeppler, Stephen R; Zhan, Weijia; Energy Deposition by Mesoscale High‐Latitude Electric Fields Into the Thermosphere During the 26 October 2019 Geomagnetic Storm, Journal of Geophysical Research: Space Physics, 127, 12, e2022JA030716 (2022)
Le, Guan; Knipp, Delores J; Rastätter, Lutz; Lu, Gang; Ozturk, Dogacan Su; Slavin, James A; Maute, Astrid; Klenzing, Jeffrey; Zou, Shasha; Espley, Jared R; Next generation magnetic field measurements from low-earth orbit satellites enable enhanced space �þ��Ƶ operations, Frontiers in Astronomy and Space Sciences, 9, 1076892 (2022), Frontiers Media SA
Blandin, Matthew; Connor, Hyunju K; Öztürk, Doğacan S; Keesee, Amy M; Pinto, Victor; Mahmud, Md Shaad; Ngwira, Chigomezyo; Priyadarshi, Shishir; Multi-variate LSTM prediction of Alaska magnetometer chain utilizing a coupled model approach, Frontiers in Astronomy and Space Sciences, 9, 846291, (2022), Frontiers Media SA.
McMillan, Kiara L; Öztürk, Doğacan S; Acar, Pinar; Inverse design of 2d-mechanical metamaterials with spinodal topologies under uncertainty, AIAA SCITECH 2022 Forum, 811, (2022)
Sokolov, Igor V; van der Holst, Bart; Manchester, Ward B; Ozturk, Dogacan Su; Szente, Judit; Taktakishvili, Aleksandre; Tóth, Gábor; Jin, Meng; Gombosi, Tamas I; Threaded-field-line Model for the Low Solar Corona Powered by the Alfvén Wave Turbulence, The Astrophysical Journal, 908, 2, 172 (2021), IOP Publishing
Ozturk, DS; Meng, X; Verkhoglyadova, OP; Varney, RH; Reimer, AS; Semeter, JL; A new framework to incorporate high‐latitude input for mesoscale electrodynamics, Journal of Geophysical Research: Space Physics, 125, 1, e2019JA027562 (2020)
Poh, Gangkai; Slavin, James A; Lu, San; Le, Guan; Ozturk, Dogacan Su; Sun, Wei‐Jie; Zou, Shasha; Eastwood, Jonathan P; Nakamura, Rumi; Baumjohann, Wolfgang; Dissipation of earthward propagating flux rope through re‐reconnection with geomagnetic field: An MMS case study, Journal of Geophysical Research: Space Physics, 124, 9, 7477-7493 (2019)
Ozturk, DS; Zou, S; Ridley, AJ; Slavin, JA; Modeling study of the geospace system response to the solar wind dynamic pressure enhancement on 17 March 2015, Journal of Geophysical Research: Space Physics, 123, 4, 2974-2989 (2018)
Zou, Shasha; Ozturk, Dogacan; Varney, Roger; Reimer, Ashton; Effects of sudden commencement on the ionosphere: PFISR observations and global MHD simulation, Geophysical Research Letters, 44, 7, 3047-3058 (2017)
Ozturk, Dogacan Su; Zou, Shasha; Slavin, James A; IMF By effects on ground magnetometer response to increased solar wind dynamic pressure derived from global MHD simulations, Journal of Geophysical Research: Space Physics, 122, 5, 5028-5042 (2017)
Haiducek, John D; Welling, Daniel T; Ganushkina, Natalia Y; Morley, Steven K; Ozturk, Dogacan Su; SWMF global magnetosphere simulations of January 2005: Geomagnetic indices and cross‐polar cap potential, Space Weather, 15, 12, 1567-1587 (2017)
Tenishev, Valeriy; Öztürk, Doğacan Su; Combi, Michael R; Rubin, Martin; Waite, Jack Hunter; Perry, Mark; Effect of the Tiger Stripes on the water vapor distribution in Enceladus' exosphere; Journal of Geophysical Research: Planets, 119, 12, 2658-2667 (2014)
Menteş, Egemen; Öztürk, Doğacan Su; Bayar, Mertcan; Acar, Pınar; Nikbay, Melike; Reliability Based Design Optimization of Solar Array Structure for a Leo Nanosatellite (2013)

Dr. Mykhaylo (Mike) Shumko

Assistant Professor of Physics

msshumko@alaska.edu

701D Elvey Bldg

Special Interests/Research: Magnetosphere-Ionosphere Coupling & Auroral Dynamics, with a focus on relativistic particle precipitation from space into Earth’s atmosphere using satellites and all-sky imagers.

Learn more about Dr. Mykhaylo (Mike) Shumko

Peer Reviewed Publications:

· Shumko, M., et al. (2025). “On the spatial relationship between the aurora and relativistic electron precipitation during a storm-time substorm.” Geophysical Research Letters 52.17 (2025): e2025GL116477. (Paper featured on GRL Issue cover)
· Shumko, M. et al., (2025). A Localized Burst of Relativistic Electrons in Earth’s Plasma Sheet: Low-and High-Altitude Signatures During a Substorm. Journal of Geophysical Research: Space Physics (submitted).
· Sorathia, K. A., Shumko, M., et al. ”Direct radiation belt injections and their auroral counterparts.” Geophysical Research Letters 52.19 (2025): e2025GL117469.
· Gabrielse, C., et al., Shumko, M. (2025). The Relativistic Electron Magnetic Spectrometer (REMS) Instrument. Space Science Reviews, 221(5), 69.
· Raptis, Savvas, et al. Shumko, M. “Multimission Observations of Relativistic Electrons and High-speed Jets Linked to Shock-generated Transients.” The Astrophysical Journal Letters 981.1 (2025): L10.
· Zhang, X.-J. et al., Shumko, M. (2025). Relativistic and ultra-relativistic electron bursts in earth’s magnetotail observed by low-altitude satellites. Geophysical Research Letters, 52, e2024GL113280.
· He, J., Chen, L., Xia, Z., Shumko, M., & Blum, L. (2025). Association of relativistic electron microbursts duration with chorus wave properties. Geophysical Research Letters, 52, e2024GL113694.
· Elliott, S. S., et al., Shumko, M. (2024). A multi-platform statistical analysis of the azimuthal spatial extent of the microburst precipitation region. Journal of Geophysical Research: Space Physics, 129, e2024JA033208.
· Sorathia, K. A., Shumko, M., et al. (2024). Identifying the magnetospheric drivers of giant undulations: Global modeling of the evolving inner magnetosphere and its auroral manifestations. Geophysical Research Letters, 51, e2024GL110772. .
· Feinland, M., et al., Shumko, M. (2024). Lightning-induced relativistic electron precipitation from the inner radiation belt. Nat Commun 15, 8721. .
· Householder, I., et al., Shumko, M. (2024). Comparisons of Energetic Electron Observations between FIREBIRD-II CubeSats and POES/MetOp Satellites from 2018-2020 (accepted) AGU-JGR
· Kurien, L. et al., Shumko, M. (2024). Outer zone relativistic electron response to mesoscale periodic density structures in the solar wind: Van Allen probes measurements. Journal of Geophysical Research: Space Physics, 129, e2024JA032614. .
· Hasokawa, K, et al., Shumko, M. (2024). Variation of the Altitude of Auroral Emission during a Substorm Cycle: Stereoscopic optical observations during the LAMP Rocket Experiment. Journal of Geophysical Research: Space Physics 129.11.
· Nos´e, et al., Shumko, M. (2024). Field-aligned currents associated with pulsating auroral patches: Observation with magneto-impedance magnetometer (MIM) onboard loss through auroral microburst pul-
sations (LAMP) sounding rocket. Journal of Geophysical Research: Space Physics, 129, e2023JA032232.
· Wetzel, W., et al., Shumko, M. (2024). Properties of relativistic bouncing microbursts. Journal of Geophysical Research: Space Physics, 129, e2023JA032344.
· Shumko M., Miyoshi, Y., Blum, L. W., Halford, A. J., Breneman, A. W., Johnson, A. T., et al. (2023). Observation of an electron microburst with an inverse time-of-flight energy dispersion. Geophysical Research Letters, 50, e2023GL104804.

· Kandar H., Blum L., Shumko M., et al. (2023). The properties of MeV electron microbursts and their repetition periods compared to chorus waves. Geophysical Research Letters.
· Namekawa T., et al., Shumko M. (2023). Simultaneous Precipitation of Sub-Relativistic Electron Microburst and Pulsating Aurora Electrons. Geophysical Research Letters. .
· Meyer-Reed, C., Blum, L., and Shumko M. (2022). Pitch Angle Isotropy of Relativistic Electron Microbursts as Observed by SAMPEX/HILT: Statistical and Storm-time Properties. Journal of Geophysical Research: Space Physics, 128, e2022JA030926.
· Elliott S, et al., Shumko M (2022). Understanding the properties, wave drivers, and impacts of electron microburst precipitation: Current understanding and critical knowledge gaps. Front. Astron. Space Sci. 9:1062422. doi: 10.3389/fspas.2022.1062422
· Narock A, et al., Shumko M (2022). Supporting responsible machine learning in heliophysics. Front. Astron. Space Sci. 9:1064233. doi: 10.3389/fspas.2022.1064233
· Shumko M., et al. (2022). Proton aurora and relativistic electron microbursts scattered by electromagnetic ion cyclotron waves. Front. Astron. Space Sci. 9:975123. doi: 10.3389/fspas.2022.975123
· Shumko M., et al. (2022). AuroraX, PyAuroraX, and aurora-asi-lib: A user-friendly auroral all-sky imager analysis framework. Front. Astron. Space Sci. 9:100945. doi: 10.3389/fspas.2022.1009450
· Elliott, S., et al., Shumko M. (2022). Quantifying the size and duration of a microburst-producing chorus region on 5 December 2017. Geophysical Research Letters, 49, e2022GL099655.
· Shumko M., et al., (2021). Duration of individual relativistic electron microbursts: A probe into their scattering mechanism. Geophysical Research Letters, 48, e2021GL093879.
· Shumko M., et al., (2021). A strong correlation between relativistic electron microbursts and patchy aurora. Geophysical Research Letters, 48, e2021GL094696.
· Johnson, A. T., Shumko M., et al., (2021). The energy spectra of electron microbursts between 200 keV and 1 MeV. Journal of Geophysical Research: Space Physics, 126, e2021JA029709.
· Capannolo, L., et al., Shumko, M. (2021). Energetic electron precipitation observed by FIREBIRD-II potentially driven by EMIC waves: Location, extent, and energy range from a multievent analysis. Geophysical Research Letters, 48(5), e2020GL091564.
· Duderstadt, et al., Shumko, M. (2021). Estimating the impacts of radiation belt electrons on atmospheric chemistry using FIREBIRD II and Van Allen Probes observations. Journal of Geophysical Research: Atmospheres, 126(7), e2020JD033098.
· Shumko, M., et al., (2020). Statistical Properties of Electron Curtain Precipitation Estimated With AeroCube-6. Journal of Geophysical Research: Space Physics, 125(12), e2020JA028462.
· Shumko, M., et al., (2020). Electron microburst size distribution derived with AeroCube-6. Journal of Geophysical Research: Space Physics, 125(3), e2019JA027651.
· Johnson, A. T., Shumko, M., et al., (2020). The FIREBIRD-II CubeSat mission: Focused investigations of relativistic electron burst intensity, range, and dynamics. Review of Scientific Instruments, 91(3), 034503.
· Capannolo, L., et al., Shumko, M. (2019). Direct observation of subrelativistic electron precipitation potentially driven by EMIC waves.” Geophysical Research Letters 46.22.
· Shumko, M., et al., (2018). Evidence of microbursts observed near the equatorial plane in the outer
Van Allen radiation belt. Geophysical Research Letters, 45(16), 8044-8053.
· Shumko, M., et al., (2018). Microburst scale size derived from multiple bounces of a microburst simultaneously observed with the FIREBIRD-II CubeSats. Geophysical Research Letters, 45(17), 8811-8818.
· Breneman, et al., Shumko, M. (2017). Observations directly linking relativistic electron microbursts to whistler mode chorus: Van Allen Probes and FIREBIRD II. Geophysical Research Letters, 44(22), 11-265.
· Ull´an, M., et al., Shumko, M., (2014). Low-resistance strip sensors for beam-loss event protection. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 765, 252-257.

Dr. Martin Truffer

Professor, Physics Academic Advisor

Department Chair

mtruffer2@alaska.edu | 907-474-5359

401 Elvey Bldg

Special Interests/Research: Glacier dynamics, subglacial processes, ice-ocean interaction, fast glacier flow, geophysical applications to glaciology, hot water drilling, numerical modeling, geophysical inverse methods.

Learn more about Dr. Martin Truffer

Selected Publications

Ochwat, N.E., T.A. Scambos, A.F. Banwell, R.S. Anderson, M.L. Maclennan, G. Picard, J.A. Shates, S. Marinsek, L. Margonari, M. Truffer, and E.C. Pettit. 2024. “Triggers of the 2022 Larsen B Multi-Year Landfast Sea Ice Breakout and Initial Glacier Response.” The Cryosphere 18 (4): 1709–31. .
Alley, K.E., R.B. Alley, A.D. Crawford, N. Ochwat, C.T. Wild, J. Marson, T. Snow, A. Muto, E.C. Pettit, S.F. Child, M. Truffer, G. Collao-Barrios and T.A. Scambos. 2024. “Evolution of Sub-Ice-Shelf Channels Reveals Changes in Ocean-Driven Melt in West Antarctica.” Journal of Glaciology, March, 1–15. .
Hock, R., and M. Truffer. 2024. “Glacier Hazards: Will They Change in the Future?” Arctic, Antarctic, and Alpine Research 56 (1): 2335991. .
Wild, Christian T., Samuel B. Kachuck, Adrian Luckman, Karen E. Alley, Meghan A. Sharp, Haylee Smith, Scott W. Tyler, et al. 2024. “Rift Propagation Signals the Last Act of the Thwaites Eastern Ice Shelf despite Low Basal Melt Rates.” Journal of Glaciology, September, 1–18. .
Tober, Brandon S., Michael S. Christoffersen, John W. Holt, Martin Truffer, and Christopher F. Larsen. 2024. “Thickness of Ruth Glacier, Alaska, and Depth of Its Great Gorge from Ice-Penetrating Radar and Mass Conservation.” Journal of Glaciology, October, 1–10. .
Polashenski, David, Martin Truffer, and William Henry Armstrong. 2024. “Reduced Basal Motion Responsible for 50 Years of Declining Ice Velocities on Athabasca Glacier.” Journal of Glaciology, October, 1–13. .
Tober, B. S., J. W. Holt, M. S. Christoffersen, M. Truffer, C. F. Larsen, D. J. Brinkerhoff, and S. A. Mooneyham. 2023. “Comprehensive Radar Mapping of Malaspina Glacier (Sít’ Tlein), Alaska—The World’s Largest Piedmont Glacier—Reveals Potential for Instability.” Journal of Geophysical Research: Earth Surface 128, no. 3 (March 2023): e2022JF006898.
Amundson, J. M., Truffer, M., & Zwinger, T. (2022). Tidewater glacier response to individual calving events. Journal of Glaciology, 1–10.
Khan, S. A., Bamber, J. L., Rignot, E., Helm, V., Aschwanden, A., Holland, D. M., Broeke, M., King, M., Noël, B., Truffer, M., Humbert, A., Colgan, W., Vijay, S., & Munneke, P. K. (2022). Greenland mass trends from airborne and satellite altimetry during 2011‐2020. Journal of Geophysical Research: Earth Surface, 1–20.
Armstrong, W. H., D, Polashenski, M. Truffer, G. Horne, J. B. Hanson, R. L. Hawley, A. M. Hengst, L. Vowels, B. Menounos, and W. Van Wychen. 2022. “Declining Basal Motion Dominates the Long‐Term Slowing of Athabasca Glacier, Canada.” Journal of Geophysical Research: Earth Surface 127 (10): e2021JF006439. .
Dotto, T. S., K. J. Heywood, R. A. Hall, T. A. Scambos, Y. Zheng, Y. Nakayama, S. Hyogo, et al. 2022. “Ocean Variability beneath Thwaites Eastern Ice Shelf Driven by the Pine Island Bay Gyre Strength.” Nature Communications 13 (1): 7840. .
Kneib, M., E. S. Miles, P. Buri, S. Fugger, M. McCarthy, T. E. Shaw, Z. Chuanxi, et al. 2022. “Sub-Seasonal Variability of Supraglacial Ice Cliff Melt Rates and Associated Processes from Time-Lapse Photogrammetry.” The Cryosphere, April. .
Cassotto, R. K., Burton, J. C., Amundson, J. M., Fahnestock, M. A., & Truffer, M. (2021). Granular decoherence precedes ice mélange failure and glacier calving at Jakobshavn Isbræ. Nature Geoscience, 14(6), 417–422.
MacGregor, J. A., Boisvert, L. N., Medley, B., Petty, A. A., Harbeck, J. P., Bell, R. E., Blair, J. B., Blanchard-Wrigglesworth, E., Buckley, E. M., Christoffersen, M. S., Cochran, J. R., Csathó, B. M., De Marco, E. L., Dominguez, R. A. T., Fahnestock, M. A., Farrell, S. L., Gogineni, S. P., Greenbaum, J. S., Hansen, C. M., … Yungel, J. K. (2021). The Scientific Legacy of NASA’s Operation IceBridge. Reviews of Geophysics, 59(2), 1–65.
Loso, M. G., Larsen, C. F., Tober, B. S., Christoffersen, M., Fahnestock, M., Holt, J. W., & Truffer, M. (2021). Quo vadis, Alsek? Climate-driven glacier retreat may change the course of a major river outlet in southern Alaska. Geomorphology, 384, 107701.
McNeil, C., Amundson, J., O’Neel, S., Motyka, R., Sass, L., Truffer, M., Zechmann, J., & Campbell, S. (2021). The Imminent Calving Retreat of Taku Glacier. Eos, 102, 1–10.
Cook, S. J., Christoffersen, P., Truffer, M., Chudley, T. R., & Abellán, A. (2021). Calving of a large Greenlandic tidewater glacier has complex links to meltwater plumes and mélange. Journal of Geophysical Research: Earth Surface, 1–16.
Hansen, K., Truffer, M., Aschwanden, A., Mankoff, K., Bevis, M., Humbert, A., Broeke, M. R., Noël, B., Bjørk, A., Colgan, W., Kjær, K. H., Adhikari, S., Barletta, V., & Khan, S. A. (2021). Estimating Ice Discharge at Greenland’s Three Largest Outlet Glaciers Using Local Bedrock Uplift. Geophysical Research Letters, 48(14), 1–10.
Wild, C., Alley, K., Muto, A., Truffer, M., Scambos, T., & Pettit, E. (2021). Weakening of the pinning point buttressing Thwaites Glacier, West Antarctica. Cryosphere, 1–28.
Aschwanden, A., Bartholomaus, T. C., Brinkerhoff, D. J., & Truffer, M. (2021). Brief communication: A roadmap towards credible projections of ice sheet contribution to sea level. The Cryosphere, 15(12), 5705–5715.
Alley, K. E., Wild, C. T., Luckman, A., Scambos, T. A., Truffer, M., Pettit, E. C., Muto, A., Wallin, B., Klinger, M., Sutterley, T., Child, S. F., Hulen, C., Lenaerts, J. T. M., Maclennan, M., Keenan, E., & Dunmire, D. (2021). Two decades of dynamic change and progressive destabilization on the Thwaites Eastern Ice Shelf. Cryosphere, 15(11), 5187–5203.
Carr, C. G., Carmichael, J. D., Pettit, E. C., & Truffer, M. (2020). The influence of environmental microseismicity on detection and interpretation of small-magnitude events in a polar glacier setting. Journal of Glaciology, 1–17. https://doi.org/10.1017/jog.2020.48
Moon, T., Scambos, T., Abdalati, W., Ahlstrøm, A. P., Bindschadler, R., Gambill, J., Heimbach, P., Hock, R., Langley, K., Miller, I., & Truffer, M. (2020). Ending a Sea of Confusion: Insights and Opportunities in Sea-Level Change Communication. Environment, 62(5), 4–15.
Lundesgaard, Ø., Winsor, P., Truffer, M., Merrifield, M., Powell, B., Statscewich, H., … Smith, C. R. (2019). Hydrography and energetics of a cold subpolar fjord: Andvord Bay, western Antarctic Peninsula. Progress in Oceanography, 102224. 10.1016/j.pocean.2019.102224
Aschwanden, A., M.A. Fahnestock, M. Truffer, D. Brinkerhoff, R. Hock, C. Khroulev, R. Mottram, and S.A. Khan. (2019). Contribution of the Greenland Ice Sheet to sea level over the next millennium. Science Advances, 5(6), doi: 10.1126/sciadv.aav9396.
Cape, M.R., M. Vernet, E.C. Pettit, J. Wellner, M. Truffer, G. Akie, E. Domack, A. Leventer, C.R. Smith, and B.A. Huber. (2019). Circumpolar Deep Water Impacts Glacial Meltwater Export and Coastal Biogeochemical Cycling Along the West Antarctic Peninsula. Frontiers in Marine Science, 6(March), 1–23. doi:10.3389/fmars.2019.00144
Kienholz, C., J.M. Amundson, R. Motyka, R.H. Jackson, J.B. Mickett, D.A. Sutherland, J.D. Nash, D.S. Winters, W.P. Dryer, and M. Truffer. (2019). Tracking icebergs with time-lapse photography and sparse optical flow , LeConte Bay , Alaska , 2016 – 2017. J. Glaciol., 65, 195–211. doi:10.1017/jog.2018.105.
Moyer, A.N., P.W. Nienow, N. Gourmelen, A.J. Sole, M. Truffer, M.A. Fahnestock, and D.A. Slater. (2019). Spatio-temporal variations in seasonal ice tongue submarine melt rate at a tidewater glacier in southwest Greenland. J. Glaciol., 1–8. .
Wellner, J., Scambos, T., Domack, E., Vernet, M., Leventer, A., Balco, G., Brachfeld, S., Cape, M.R., Huber, B., Ishman, S., McCormick, M.L., Mosley-Thompson, E., Pettit, E., Smith, C.R., Truffer, M., Van Dover, C. and Yoo, K.-C. (2019). The Larsen Ice Shelf System, Antarctica (LARISSA): Polar Systems Bound Together, Changing Fast. GSA Today, 29(8), 4–10.https://doi.org/10.1130/gsatg382a.1
Zechmann, J.M., A.D. Booth, M. Truffer, A. Gusmeroli, J.M. Amundson, and C.F. Larsen (2018) Active seismic studies in valley glacier settings: strategies and limitations. J. Glaciol., 1–15. doi:10.1017/jog.2018.69
Cassotto, R., M. Fahnestock, J. Amundson, M. Truffer, M. Boettcher, S. De La Peña, and I. Howat. (2018) Non-linear glacier response to calving events, Jakobshavn Isbrae, Greenland. J. Glaciol., 1-16, doi:10.1017/jog.2018.90.
Kienholz, C., R. Hock, M. Truffer, P. Bieniek and R. Lader (2017). Mass Balance Evolution of Black Rapids Glacier, Alaska, 1980–2100, and Its Implications for Surge Recurrence. Frontiers in Earth Science, 5(July), 56.
Brinkerhoff, D., M. Truffer, and A. Aschwanden (2017). Sediment transport drives tidewater glacier periodicity. Nat. Comms, 8(1), 90. (doi.org/10.1038/s41467-017-00095-5)
Voytenko, D., T.H. Dixon, D.M. Holland, R. Cassotto, I.M. Howat, M.A. Fahnestock, M. Truffer and S. De La Pena (2017). Acquisition of a 3 min, two-dimensional glacier velocity field with terrestrial radar interferometry. J. Glaciol., 1–8.
Habermann, M., M. Truffer, and D. Maxwell (2017). Error sources in basal yield stress inversions for Jakobshavn Isbrae, Greenland, derived from residual patterns of misfit to observations. J. Glaciol., 63(242). doi:10.1017/jog.2017.61.
Motyka RJ, Cassotto R, Truffer M, Kjeldsen KK, Van As D, Korsgaard NJ, Fahnestock M, Howat I, Langen PL, Mortensen J, Lennert K and Rysgaard S (2017). Asynchronous behavior of outlet glaciers feeding Godthåbsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland. J. Glaciol. 63(238), 288-308.
Brinkerhoff, D.J., Aschwanden, A., and Truffer, M. (2016). Bayesian Inference of Subglacial Topography Using Mass Conservation. Frontiers in Earth Science, 4, 1–27. doi:10.3389/feart.2016.00008
Smith, JA, Andersen TJ, Shortt M, Gaffney AM, Truffer M, Stanton TP, Bindschadler R, Dutrieux P, Jenkins A, Hillenbrand C-D, Ehrmann W, Corr HFJ, Farley N, Crowhurst S and Vaughan DG (2016) Sub-ice-shelf sediments record history of twentieth-century retreat of Pine Island Glacier. Nature (doi:10.1038/nature20136).
Kienholz, C., R. Hock, M. Truffer, A. A. Arendt, and S. Arko (2016), Geodetic mass balance of surge-type Black Rapids Glacier, Alaska, 1980–2001–2010, including role of rockslide deposition and earthquake displacement, J. Geophys. Res. Earth Surf., 121, 2358–2380, doi:10.1002/2016JF003883.
Christianson, K, Bushuk M, Dutrieux P, Parizek BR, Joughin IR, Alley RB, Shean DE, Abrahamsen EP, Anandakrishnan S, Heywood KJ, Kim T-W, Lee SH, Nicholls K, Stanton T, Truffer M, Webber BGM, Jenkins A, Jacobs S, Bindschadler R, Holland DM (2016), Sensitivity of Pine Island Glacier to observed ocean forcing, Geophys. Res. Lett., 43, 10,817–10,825, doi:10.1002/2016GL070500.
Brinkerhoff D, Meyer C, Bueler E, Truffer M, and Bartholomaus T (2016) Inversion of a glacier hydrology model. Ann. Glaciol., 57(72), doi: 10.1017/aog.2016.
Herreid S and Truffer M (2016) Automated detection of unstable glacier flow and a spectrum of speedup behavior in the Alaska Range. J. Geophys. Res. 121(1), 64-81 (doi:10.1002/2015JF003502)
Aschwanden A, Fahnestock MA and Truffer M (2016) Complex Greenland outlet glacier flow captured. Nat. Comm. 7 (doi:10.1038/ncomms10524)
Pilloud MA, Megyesi MS, Truffer M and Congram D (2016) The taphonomy of human remains in a glacial environment. For. Sc. Int. 261 (doi:10.1016/j.forsciint.2016.01.027)
Truffer M and Motyka MJ (2016) Where glaciers meet water: Subaqueous melt and its relevance to glaciers in various settings. Rev. Geophys. 54(1), 220-239 (doi:1002/2015RG000494).
2015

Dr. Renate Wackerbauer

Professor, Physics Academic Advisor

rawackerbauer@alaska.edu | 907-474-6108

106 Reichardt Bldg

Special Interests/Research: Complex temporal and spatiotemporal dynamics, Stochastic dynamical systems, Nonlinear time series analysis and Modeling of biological systems: coupled (biological) oscillators/circadian rhythms/neuron dynamics

Learn more about Dr. Renate Wackerbauer

Selected Publications

S Awender, R Wackerbauer, and G Breed, Combining generalized modeling and specific modeling in the analysis of ecological networks, CHAOS 33, 033130 (2023)
S Awender, R Wackerbauer, and G Breed, Stability of generalized ecological-network models, CHAOS 31, 023106 (2021)
O. Steinbock, R Wackerbauer, and D. Horvath, Nonlinear chemical dynamics and its interdisciplinary impact: dedicated to Ken Showalter on the occasion of his 70th birthday, Chaos 29, 080401, 2019
V Kaminker (PhD student) and R Wackerbauer, Alternating activity patterns and a chimeralike state in a network of globally coupled excitable Morris-Lecar neurons, Chaos 29, 053121, 2019.
H Hartle (UG student) and R Wackerbauer, Transient chaos and system-intrinsic switching of spacetime patterns in two synaptically coupled layers of Morris-Lecar neurons, Phys. Rev. E 96, 032223, 2017.
J Lafranceschina and R Wackerbauer, Impact of weak excitatory synapses on chaotic transients in a diffusively coupled Morris-Lecar neuronal network, Chaos 25, 013119, 2015
K Keplinger and R Wackerbauer, Transient spatiotemporal chaos in the Morris-Lecar neuronal ring network, Chaos 24, 013126, 2014.
M Mueller-Stoffels and R Wackerbauer, Albedo parameterization and reversibility of sea ice decay, Nonlinear Processes in Geophysics 19, 81-94 (2012).
D Stahlke (graduate student) and R Wackerbauer, Length scale of interaction in spatiotemporal chaos, Phys. Rev. E 83, 046204 (2011).
M Mueller-Stoffels (graduate student) and R Wackerbauer, Regular network model for the sea ice-albedo feedback in the Arctic, Chaos 21, 013111 (2011).
D Stahlke (graduate student) and R Wackerbauer, Transient spatiotemporal chaos is extensive in three reaction-diffusion networks, Phys. Rev. E 80, 056211 (2009).
R Wackerbauer, Master stability analysis in transient spatiotemporal chaos, Phys. Rev. E 76, 056207 (2007).
R Wackerbauer and S Kobayashi (undergraduate student), Noise can delay and advance the collapse of spatiotemporal chaos, Phys. Rev. E 75, 066209 (2007).
S Yonker (graduate student) and R Wackerbauer, Nonlocal coupling can prevent the collapse of spatiotemporal chaos, Phys. Rev. E 73, 026218 (2006).