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Hayley Allison

Scientist


Biography

Hayley graduated from the University of Leicester in 2015 with a MPhys in Physics with Astrophysics. She then began a PhD in Applied Mathematics, hosted jointly by the University of Cambridge and the British Antarctic Survey, in the fall of 2015. During her PhD, Hayley received the Outstanding Student Paper Award from the American Geophysical Union (2017). She successfully defended her PhD thesis, “Understanding how low energy electrons control the variability of Earth’s electron radiation belts” in the summer of 2019, for which she was awarded the runner up Keith Runcorn Thesis Prize from the Royal Astronomical Society. Hayley now works as an Alexander von Humboldt postdoctoral research fellow at GFZ, Potsdam.

Research interests

  • Dynamics of radiation belt electrons
  • Energy transport in the Earth’s radiation belts
  • Wave-Particle Interactions

Publications

  1. Drozdov A. Y., H. J. Allison, A. A. Saikin, Q. Schiller, D. Wang, (2024), Distribution of Seed Electron Phase Space Density Minima in Earth’s Radiation Belts, Geophysical Research Letters, 51, e2023GL108028, doi:10.1029/2023GL108028
  2. Shprits Y. Y., I. Michaelis, D. Wang, H. Allison, R. Vasile, A. Runov, A. Drozdov, C. T. Russell, V. Kalegaev, A. Smirnov, (2023), MLT Dependence of Relativistic Electron Scattering Into the Drift Loss Cone: Measurements From ELFIN-L on Board Lomonosov Spacecraft, Geophysical Research Letters, 50, e2023GL103342, doi:10.1029/2023GL103342
  3. Shprits Y. Y., I. Michaelis, D. Wang, H. J. Allison, R. Vasile, A. Runov, A. Y. Drozdov, C. T. Russell, V. V. Kalegaev, A. Smirnov, (2023), MLT dependence of relativistic electron scattering into the drift loss cone: Measurements from ELFIN-L on board Lomonosov spacecraft, Authorea Preprints, doi:10.22541/essoar.167898506.66955560/v1
  4. Haas B., Y. Y. Shprits, H. J. Allison, M. Wutzig, D. Wang, (2023), A missing dusk-side loss process in the terrestrial electron ring current, Sci. Rep., 13, 970, doi:10.1038/s41598-023-28093-2
  5. Shprits Y. Y., H. J. Allison, D. Wang, A. Drozdov, M. Szabo-Roberts, I. Zhelavskaya, R. Vasile, (2022), A New Population of Ultra-Relativistic Electrons in the Outer Radiation Zone, J. Geophys. Res. [Space Physics], 127, e2021JA030214, doi:10.1029/2021JA030214, e2021JA030214 2021JA030214
  6. Smirnov A., Y. Y. Shprits, H. Allison, N. Aseev, A. Drozdov, P. Kollmann, D. Wang, A. Saikin, (2022), An Empirical Model of the Equatorial Electron Pitch Angle Distributions in Earth’s Outer Radiation Belt, Space Weather, 20, e2022SW003053, doi:10.1029/2022SW003053
  7. Smirnov A., Y. Shprits, H. Allison, N. Aseev, A. Drozdov, P. Kollmann, D. Wang, A. A. Saikin, (2022), Storm-Time Evolution of the Equatorial Electron Pitch Angle Distributions in Earth’s Outer Radiation Belt, Frontiers In Astronomy And Space Sciences, 9, doi:10.3389/fspas.2022.836811
  8. Lejosne S., H. J. Allison, L. W. Blum, A. Y. Drozdov, M. D. Hartinger, M. K. Hudson, A. N. Jaynes, L. Ozeke, E. Roussos, H. Zhao, (2022), Differentiating Between the Leading Processes for Electron Radiation Belt Acceleration, Frontiers In Astronomy And Space Sciences, 9, doi:10.3389/fspas.2022.896245
  9. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, M. E. Usanova, A. Saikin, D. Wang, (2022), Depletions of Multi-MeV Electrons and Their Association to Minima in Phase Space Density, Geophysical Research Letters, 49, e2021GL097620, doi:10.1029/2021GL097620, e2021GL097620 2021GL097620
  10. Drozdov A. Y., L. W. Blum, M. Hartinger, H. Zhao, S. Lejosne, M. K. Hudson, H. J. Allison, L. Ozeke, A. N. Jaynes, (2022), Radial Transport Versus Local Acceleration: The Long-Standing Debate, Earth And Space Science, 9, e2022EA002216, doi:10.1029/2022EA002216, e2022EA002216 2022EA002216
  11. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, S. R. Elkington, N. A. Aseev, (2021), A Comparison of Radial Diffusion Coefficients in 1-D and 3-D Long-Term Radiation Belt Simulations, J. Geophys. Res. [Space Physics], 126, e2020JA028707, doi:10.1029/2020JA028707, e2020JA028707 2020JA028707
  12. Szabó-Roberts M., Y. Y. Shprits, H. J. Allison, R. Vasile, A. G. Smirnov, N. A. Aseev, A. Y. Drozdov, Y. Miyoshi, S. G. Claudepierre, S. Kasahara, S. Yokota, T. Mitani, T. Takashima, N. Higashio, T. Hori, K. Keika, S. Imajo, I. Shinohara, (2021), Preliminary Statistical Comparisons of Spin-Averaged Electron Data From Arase and Van Allen Probes Instruments, J. Geophys. Res. [Space Physics], 126, e2020JA028929, doi:10.1029/2020JA028929, e2020JA028929 2020JA028929
  13. Smirnov A. G., M. Berrendorf, Y. Y. Shprits, E. A. Kronberg, H. J. Allison, N. A. Aseev, I. S. Zhelavskaya, S. K. Morley, G. D. Reeves, M. R. Carver, F. Effenberger, (2020), Medium Energy Electron Flux in Earth’s Outer Radiation Belt (MERLIN): A Machine Learning Model, Space Weather, 18, e2020SW002532, doi:10.1029/2020SW002532, e2020SW002532 10.1029/2020SW002532
  14. Cervantes Villa S., Y. Y. Shprits, N. A. Aseev, H. J. Allison, (2020), Quantifying the Effects of EMIC Wave Scattering and Magnetopause Shadowing in the Outer Electron Radiation Belt by Means of Data Assimilation, J. Geophys. Res. [Space Physics], 125, e2020JA028208, doi:10.1029/2020JA028208, e2020JA028208 10.1029/2020JA028208
  15. Allison H. J., Y. Y. Shprits, (2020), Local heating of radiation belt electrons to ultra-relativistic energies, Nature Communications, 11, doi:10.1038/s41467-020-18053-z
  16. Drozdov A. Y., M. E. Usanova, M. K. Hudson, H. J. Allison, Y. Y. Shprits, (2020), The Role of Hiss, Chorus, and EMIC Waves in the Modeling of the Dynamics of the Multi-MeV Radiation Belt Electrons, J. Geophys. Res. [Space Physics], 125, e2020JA028282, doi:10.1029/2020JA028282, e2020JA028282 2020JA028282
  17. Watt C. E., H. J. Allison, N. P. Meredith, R. L. Thompson, S. N. Bentley, I. J. Rae, S. A. Glauert, R. B. Horne, (2019), Variability of Quasilinear Diffusion Coefficients for Plasmaspheric Hiss, J. Geophys. Res. [Space Physics], 124, 8488-8506, doi:10.1029/2018JA026401
  18. Stallard T., K. Baines, T. Bradley, L. Moore, J. O’Donoghue, S. Miller, M. Chowdhury, S. Badman, H. Allison, E. Roussos, (2019), Local-time averaged maps of H 3 + emission, temperature and ion winds, Philosophical Transactions Of The Royal Society A: Mathematical Physical And Engineering Sciences, 377, 20180405, doi:10.1098/rsta.2018.0405
  19. Allanson O., C. E. Watt, H. Ratcliffe, N. P. Meredith, H. J. Allison, S. N. Bentley, T. Bloch, S. A. Glauert, (2019), Particle-in-cell Experiments Examine Electron Diffusion by Whistler-mode Waves: 1. Benchmarking With a Cold Plasma, J. Geophys. Res. [Space Physics], 124, 8893-8912, doi:10.1029/2019JA027088
  1. Allison H. J., Y. Y. Shprits, (2020), Local heating of radiation belt electrons to ultra-relativistic energies, Nature Communications, 11, doi:10.1038/s41467-020-18053-z


Google Scholar 

Conference presentations

  1. ALLISON H., Y. SHPRITS, D. WANG, M. WUTZIG, R. HORNE, S. GLAUERT, A. DROZDOV, (2022), Passing the Alfven Layer by Means of Chorus Acceleration, (invited), AOGS 2022
  2. Allison H., Y. Shprits, M. Wutzig, D. Wang, A. Drozdov, (2021), Passing the Alfven Layer by Means of Chorus Acceleration, AGU 2021 Fall Meeting, SM23B-01
  3. Drozdov A., H. Allison, Y. Shprits, N. Aseev, (2020), A Comparison of Radial Diffusion Coefficients in 1-D and 3-D Long-Term Radiation Belt Simulations, EGU General Assembly 2020, EGU General Assembly Conference Abstracts, 17757
  1. ALLISON H., Y. SHPRITS, D. WANG, M. WUTZIG, R. HORNE, S. GLAUERT, A. DROZDOV, (2022), Passing the Alfven Layer by Means of Chorus Acceleration, (invited), AOGS 2022
  1. Turner D. L., G. Clark, W. Li, S. Ukhorskiy, L. Blum, I. J. Cohen, P. Kollmann, B. Marshall, G. Berland, A. Y. Drozdov, W. Dunn, G. Hospodarsky, R. Kraft, X. Li, M. Looper, B. Mauk, Q. N{‘e}non, T. P. O’Brien, E. Roussos, H. T. Smith, K. Sorathia, P. Williams, X. Wu, O. Agapitov, J. Albert, H. Allison, D. Baker, J. B. Blake, J. Bortnik, A. Breneman, S. Bourdarie, S. Claudepierre, G. DiBraccio, S. Elkington, J. Fennell, M. Fok, D. Gershman, S. Glauert, J. Halekas, D. Hartley, R. Horne, M. Hudson, A. Kellerman, C. Kletzing, B. Kurth, L. Lanzerotti, Q. Ma, D. Malaspina, A. Masters, N. Meredith, Y. Miyoshi, Y. Omura, V. Pinto, G. Reeves, J. Ripoll, C. Rodger, T. Sarris, R. Selesnick, Y. Shprits, A. Sicard, H. Spence, W. Tu, M. Usanova, E. Woodfield, J. Wygant, H. Zhao, (2023), Cross-scale physics and the acceleration of particles in collisionless plasmas throughout the Heliosphere and beyond: III. Radiation belts, Bulletin Of The American Astronomical Society, 400, doi:10.3847/25c2cfeb.7637306e
  2. Shprits Y., H. Allison, A. Drozdov, D. Wang, (2023), The controlling effect of the cold plasma density over the acceleration and loss of ultra‑relativistic electrons, EGU General Assembly 2023, EGU General Assembly Conference Abstracts, EGU-3482, doi:10.5194/egusphere-egu23-3482
  3. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, M. E. Usanova, A. Saikin, D. Wang, (2023), Minima in Phase Space Density, GEM Summer Workshop 2023, June 11-16, 2023
  4. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, M. E. Usanova, D. Wang, Q. Shiller, A. Saikin, A. Jaynes, D. Kondrashov, (2023), Loss and Acceleration of multi-MeV Electrons and Their Corresponding Dynamic of Phase Space Density Profiles, (invited), Isradynamics 2023, Dead Sea, Israel
  5. DROZDOV A., M. USANOVA, M. HUDSON, H. ALLISON, Y. SHPRITS, D. WANG, (2022), The Role of Hiss, Chorus and EMIC Waves in the Modeling of the Dynamics of the Multi-MeV Radiation Belt Electrons, AOGS 2022
  6. Smirnov A., Y. Shprits, H. Allison, N. Aseev, A. Drozdov, P. Kollmann, D. Wang, A. Saikin, (2022), Equatorial electron pitch angle distributions in Earth’s outer radiation belt: Storm-time evolution and empirical modeling, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, doi:10.5194/egusphere-egu22-7732
  7. Drozdov A., M. Usanova, M. Hudson, H. Allison, Y. Shprits, (2022), The role of hiss, chorus and EMIC waves in the modeling of the dynamics of the multi-MeV radiation belt electrons, 44rd COSPAR Scientific Assembly, 16 July – 24 July, 2022, Athens, Greece
  8. Shprits Y., H. Allison, A. Drozdov, D. Wang, N. Aseev, M. Usanova, (2022), A new population of energetic particles discovered by the REPT instrument on board the Van Allen Probes satellites, 44rd COSPAR Scientific Assembly, 16 July – 24 July, 2022, Athens, Greece
  9. ALLISON H., Y. SHPRITS, D. WANG, M. WUTZIG, R. HORNE, S. GLAUERT, A. DROZDOV, (2022), Passing the Alfven Layer by Means of Chorus Acceleration, (invited), AOGS 2022
  10. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, M. E. Usanova, A. Saikin, D. Wang, (2022), Depletions of Multi-MeV Electrons and Their Association to Minima in Phase Space Density, GEM Summer Workshop 2022, June 19-26, 2022
  11. Wang D., Y. Y. Shprits, O. V. Agapitov, A. Drozdov, H. J. Allison, T. Lepage, Y. Miyoshi, Y. Kasahara, B. Haas, J. D. Menietti, A. Saikin, Y. Hao, I. Shinohara, A. Matsuoka, A. Kumamoto, S. Matsuda, F. Tsuchiya, S. Nakamura, (2022), The Distribution and the Effect of Chorus Waves in the Earth’s and the Jupiter’s Radiation Belts, AGU 2022 Fall Meeting, SM56B-01
  12. Shprits Y., H. J. Allison, D. Wang, A. Drozdov, (2022), The controlling effect of the cold plasma density over theacceleration and loss of ultra-relativistic electrons, AGU 2022 Fall Meeting, SM13A-09
  13. Allison H., Y. Shprits, M. Wutzig, D. Wang, A. Drozdov, (2021), Passing the Alfven Layer by Means of Chorus Acceleration, AGU 2021 Fall Meeting, SM23B-01
  14. SHPRITS Y., H. ALLISON, A. DROZDOV, D. WANG, N. ASEEV, I. ZHELAVSKAYA, M. USANOVA, (2021), Acceleration and Loss of Ultra-relativistic Electrons in the Earth Van Allen Radiation Belts, (invited), AOGS 2021
  15. Allison H., M. Hudson, A. Jaynes, S. Lejosne, L. Ozeke, (2021), Panel discussion: Radial Transport vs. Local Acceleration: The Long-standing Debate, Virtual GEM Summer Workshop 2021, July 25-30, 2021
  16. Castillo Tibocha A. M., Y. Shprits, N. Aseev, H. Allison, A. Smirnov, A. Drozdov, (2021), Can we intercalibrate satellite measurements by means of data assimilation? An attempt on LEO satellites, AGU 2021 Fall Meeting, SA12A-03
  17. Shprits Y., H. Allison, A. Drozdov, D. Wang, N. Aseev, I. Zhelavskaya, M. Usanova, (2021), Controlling Effect of the Cold Plasma Density on Acceleration and Loss of Electrons at Ultra-Relativistic Energies, AGU 2021 Fall Meeting, SM12A-02
  18. Smirnov A., Y. Shprits, H. Allison, N. Aseev, A. Drozdov, P. Kollmann, (2021), Storm-time evolution and empirical modelling of the equatorial electron pitch angle distributions in Earth’s outer radiation belt, AGU 2021 Fall Meeting, SM15B-1958
  19. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, M. E. Usanova, A. Saikin, D. Wang, M. Szabo-Roberts, (2021), Observations of multi-MeV electron flux depletion and their relation to the minima in phase space density, AGU 2021 Fall Meeting
  20. Smirnov A., E. Kronberg, F. Effenberger, G. Reeves, S. Morley, Y. Shprits, N. Aseev, I. Zhelavskaya, M. Carver, H. Allison, M. Berrendorf, (2021), Medium energy electron flux in Earth’s outer radiation belt (MERLIN): a machine learning model from GPS data, 43rd COSPAR Scientific Assembly, 1086
  21. Wang D., Y. Shprits, A. Drozdov, N. Aseev, I. Zhelavskaya, A. Castillo, H. Allison, S. Cervantes Villa, F. Effenberger, (2021), Simulations of the Relativistic Radiation Belt Electrons Using the VERB-3D Code, EGU General Assembly 2021, EGU General Assembly Conference Abstracts, EGU21-3802
  22. Shprits Y., H. Allison, A. Drozdov, D. Wang, N. Aseev, I. Zhelavskaya, M. Usanova, (2021), Acceleration and Loss of Ultra-relativistic Electrons in the Earth Van Allen Radiation Belts, EGU General Assembly 2021, EGU General Assembly Conference Abstracts, EGU21-3120
  23. Smirnov A., Y. Shprits, H. Allison, N. Aseev, A. Drozdov, P. Kollmann, (2021), Equatorial electron pitch angle distributions in Earth’s radiation belts and ring current: Van Allen Probes observations, 43rd COSPAR Scientific Assembly, Sydney, Australia, 28 Jan – 04 Feb 2021
  24. Shprits Y., A. Drozdov, H. Allison, N. Aseev, (2021), Unusual behavior of the ultra-relativistic electron radiation belts revealed by Van Allen Probes observations, 43rd COSPAR Scientific Assembly, Sydney, Australia, 28 Jan – 04 Feb 2021
  25. Drozdov A., Y. Shprits, N. Aseev, M. Usanova, F. Effenberger, H. Allison, A. Saikin, I. Zhelavskaya, (2021), Depletion of multi-MeV electrons and its relation to the minima in phase space density, 43rd COSPAR Scientific Assembly, Sydney, Australia, 28 Jan – 04 Feb 2021
  26. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, S. R. Elkington, N. A. Aseev, (2021), 3-D VERB code simulations with different DLL, Virtual GEM Summer Workshop 2021, July 25-30, 2021
  27. Drozdov A. Y., H. J. Allison, Y. Y. Shprits, S. R. Elkington, N. A. Aseev, (2021), 1-D and 3-D VERB code simulations with different DLL, Virtual GEM Summer Workshop 2021, July 25-30, 2021
  28. Drozdov A., H. Allison, Y. Shprits, M. Usanova, A. Saikin, (2021), Minima in phase space density and how they relate to the multi-MeV electron radiation belt depletions, (invited), Iceaa-ieee Apwc-usnc URSI RSM 2021, August 9-13, 2021
  29. Drozdov A. Y., M. E. Usanova, M. Hudson, H. J. Allison, Y. Y. Shprits, (2020), The role of hiss, chorus and EMIC waves in the modeling of the dynamics of the multi-MeV radiation belt electrons, Virtual GEM Summer Workshop 2020, July 20-23, 2020
  30. Shprits Y., H. Allison, A. Drozdov, D. Wang, N. Aseev, I. Zhelavskaya, M. Usanova, (2020), Acceleration and Loss of Ultra-relativistic Electrons in the Earth Van Allen Radiation Belts, AGU 2020 Fall Meeting
  31. Szabo-Roberts M., Y. Shprits, H. Allison, A. Smirnov, N. Aseev, R. Vasile, Y. Miyoshi, T. Mitani, N. Higashio, S. Kasahara, (2020), Statistical Comparisons of Spin-Averaged Electron Flux from ARASE and Van Allen Probes Instruments, (poster), AGU 2020 Fall Meeting
  32. Wutzig M., Y. Shprits, N. Aseev, I. Michaelis, H. Allison, R. Vasile, (2020), Using the VERB-4D code for forecasting Earth’s radiation belt and ring current electron dynamics, (invited), AGU 2020 Fall Meeting
  33. Drozdov A., Y. Shprits, N. Aseev, M. Usanova, H. Allison, A. Saikin, I. Zhelavskaya, (2020), Minima in phase space density and how they relate to the multi-MeV electron radiation belt depletions, AGU 2020 Fall Meeting
  34. Drozdov A., H. Allison, Y. Shprits, N. Aseev, (2020), A Comparison of Radial Diffusion Coefficients in 1-D and 3-D Long-Term Radiation Belt Simulations, EGU General Assembly 2020, EGU General Assembly Conference Abstracts, 17757