SM14C:
Understanding the Dynamic Loss of Earth's Radiation Belts I


Session ID#: 11090

Session Description:
The dynamic loss of Earth's radiation belts takes place over a wide range of spatial scales: from local wave-particle interactions to system-wide losses. Loss in the outer belt energetic electron and ring current populations often occurs on timescales as short as minutes to hours. The effects of such loss can be observed using conjunctions of space-based resources and low-altitude or ground assets, such as observations of  diffuse and pulsating aurora. This session solicits contributions that incorporate a variety of spatial and temporal ranges, including: the effects of wave-particle interactions, insights into mechanisms that produce sudden loss such as microbursts and magnetopause shadowing, and loss that occurs down to the inner reaches of the proton belt. We particularly encourage results utilizing measurements from the suite of Heliospheric satellites (e.g. Van Allen Probes, THEMIS, GOES) in conjunction with low-altitude and/or ground measurements (e.g. BARREL, POES, CubeSats, and ground-based imagers, riometers and magnetometers).
Primary Convener:  Allison N Jaynes, University of Iowa, Iowa City, United States
Conveners:  Binbin Ni, Wuhan University, Department of Space Physics, School of Electronic Information, Wuhan, China, Jacob Bortnik, University of California Los Angeles, Los Angeles, CA, United States and Mei-Ching Hannah Fok, NASA Goddard Space Flight Center, Greenbelt, MD, United States
Chairs:  Allison N Jaynes, University of Iowa, Iowa City, United States and Jacob Bortnik, University of California Los Angeles, Los Angeles, CA, United States
OSPA Liaison:  Allison N Jaynes, University of Iowa, Iowa City, United States
Index Terms:

2764 Plasma sheet [MAGNETOSPHERIC PHYSICS]
2774 Radiation belts [MAGNETOSPHERIC PHYSICS]
7859 Transport processes [SPACE PLASMA PHYSICS]
7867 Wave/particle interactions [SPACE PLASMA PHYSICS]

Abstracts Submitted to this Session:

Quantifying the Role of Different Magnetospheric Plasma Waves in Diffuse Auroral Precipitation (Invited) (84823)
Richard M Thorne1, Binbin Ni2, Wen Li1, Xiaojia Zhang3 and Jacob Bortnik1, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)Wuhan University, Wuhan, China, (3)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Los Angeles, ARRAY(0x106ce904), United States
Wide energy electron precipitations and their impact on the middle atmosphere associated with the pulsating aurora (Invited) (61116)
Yoshizumi Miyoshi1, Shin-ichiro Oyama2, Shinji Saito3, Esa S Turunen4, Satoshi Kurita3, Antti Kero5, Pekka T Verronen6, Ryuho Kataoka7, Yusuke Ebihara8, Craig Kletzing9, Geoffrey D Reeves10, Ondrej Santolik11, Mark A. Clilverd12, Craig J Rodger13 and Fuminori Tsuchiya14, (1)STEL, Nagoya University, Nagoya, Japan, (2)ISEE, Nagoya University, Nagoya, Japan, (3)Nagoya University, Nagoya, Japan, (4)University of Oulu, Sodankyla Geophysical Observatory, Oulu, Finland, (5)Sodankyla Geophysical Observatory, Sodankyla, Finland, (6)Finnish Meteorological Institute, Helsinki, Finland, (7)NIPR National Institute of Polar Research, Tokyo, Japan, (8)Kyoto University, Research Institute for Sustainable Humanosphere, Kyoto, Japan, (9)University of Iowa, Iowa City, IA, United States, (10)Los Alamos National Laboratory, Los Alamos, NM, United States, (11)Institute of Atmospheric Physics ACSR, Praha 4, Czech Republic, (12)British Antarctic Survey, Cambridge, United Kingdom, (13)University of Otago, Department of Physics, Dunedin, New Zealand, (14)Tohoku University, Sendai, Japan
Conjugate In-situ and Incoherent Scatter Radar Observations of Radiation Belt Loss Mechanisms. (71045)
Stephen Roland Kaeppler1, Allison N Jaynes2, Ennio R Sanchez3, Michael J Nicolls3, Roger H Varney4 and Robert Andrew Marshall5, (1)SRI International, Menlo Park, United States, (2)University of Iowa, Iowa City, United States, (3)SRI International Menlo Park, Menlo Park, CA, United States, (4)University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (5)Stanford University, Stanford, United States
Quantifying Energetic Particle Precipitation using the Array for Broadband Observations of VLF/ELF Emissions (ABOVE) (85296)
Christopher M Cully, University of Calgary, Calgary, AB, Canada
The Impenetrable Barrier Revisited – Anthroprogenic Effects on Earth’s Radiation Belts (76627)
John C Foster, MIT Haystack Observatory, Westford, MA, United States, Daniel N Baker, University of Colorado at Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, Philip John Erickson, MIT Haystack Observatory, Westford, United States, Jay Albert, Air Force Research Laboratory Albuquerque, Albuquerque, NM, United States, J. F. Fennell, Aerospace Corporation, Los Angeles, CA, United States, Evgeny V Mishin, Air Force Research Labratory, Kirtland AFB, NM, United States, Michael J Starks, AFRL/RVBX, Kirtland Afb, NM, United States, Allison N Jaynes, University of Iowa, Iowa City, United States, Xinlin Li, Univ Colorado at Boulder, Boulder, CO, United States, Shrikanth G Kanekal, NASA Goddard Space Flight Center, Greenbelt, MD, United States and Craig Kletzing, University of Iowa, Iowa City, IA, United States
BARREL Observations of Relativistic Electron Precipitation (Invited) (61013)
Robyn M Millan, Dartmouth College, Department of Physics and Astronomy, Hanover, NH, United States, Zan Li, Dartmouth College, Hanover, NH, United States and Leslie A Woodger, Dartmouth College, Physics & Astronomy, Hanover, NH, United States
Quantifying Energy-Time Dispersion of Relativistic Electron Microbursts to Constrain Their Generation Mechanism: Coordinated Studies Using FIREBIRD, Van Allen Probes, and BARREL (84275)
Harlan E. Spence, University of New Hampshire Main Campus, Space Science Center, Durham, NH, United States, J Bernard Blake, Aerospace Corporation Los Angeles, Los Angeles, CA, United States, Alexander B Crew, Organization Not Listed, Washington, DC, United States, J. F. Fennell, Aerospace Corporation, Los Angeles, CA, United States, David M Klumpar, Montana State University - Bozeman, Space Science and Engineering Laboratory, Department of Physics, Bozeman, United States, Brian Larsen, The New Mexico Consortium, Los Alamos, NM, United States, Robyn M Millan, Dartmouth College, Department of Physics and Astronomy, Hanover, NH, United States, Yoshizumi Miyoshi, ISEE, Nagoya University, Nagoya, Japan, Thomas Paul O'Brien III, Aerospace Corporation Chantilly, Chantilly, VA, United States, Geoffrey D Reeves, Los Alamos National Laboratory, Los Alamos, NM, United States and Sonya S Smith, University of New Hampshire Main Campus, Durham, NH, United States
Electron Radiation Belt Dropouts in the Absence of Geomagnetic Storms (84397)
Steven Morley1, Michael G Henderson2, John T Steinberg2, Drew L Turner3 and Wen Li4, (1)Los Alamos National Laboratory, Space Science and Applications, Los Alamos, United States, (2)Los Alamos National Laboratory, Los Alamos, NM, United States, (3)The Aerospace Corporation, El Segundo, CA, United States, (4)University of California Los Angeles, Los Angeles, CA, United States
Experimental observations of electron precipitation driven by EMIC waves (Invited) (64541)
Craig J Rodger1, Aaron Hendry2, Mark A. Clilverd3, Craig Kletzing4, Mark J. Engebretson5, Geoffrey D Reeves6, James B Brundell2,7 and Marc Lessard8, (1)University of Otago, Department of Physics, Dunedin, New Zealand, (2)University of Otago, Dunedin, New Zealand, (3)British Antarctic Survey, Cambridge, United Kingdom, (4)University of Iowa, Iowa City, IA, United States, (5)Augsburg University, Physics, Minneapolis, United States, (6)Los Alamos National Laboratory, Los Alamos, NM, United States, (7)University of Otago, Physics, Dunedin, New Zealand, (8)University of New Hampshire Main Campus, Durham, NH, United States
Direct Evidence of EMIC-Driven Electron Loss in Space: Evaluation of an Electron Dropout Event (75498)
Xiaojia Zhang1, Wen Li1, Qianli Ma2, Richard M Thorne1 and Vassilis Angelopoulos3, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)Boston University, Boston, MA, United States, (3)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences and Institute of Geophysics and Planetary Physics, Los Angeles, CA, United States

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