The Evolution of a Pitch-Angle "Bite-Out" Scattering Signature Caused by EMIC Wave Activity: A Case Study

被引：24

作者：

Bingley, L. ^{[1
]}

Angelopoulos, V ^{[1
]}

Sibeck, D. ^{[2
]}

Zhang, X. ^{[1
]}

Halford, A. ^{[3
]}

机构：

[1] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[3] Aerosp Corp, Chantilly, VA USA

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2019年 / 124卷 / 07期

关键词：

ION-CYCLOTRON WAVES; VAN ALLEN PROBES; RELATIVISTIC ELECTRON-PRECIPITATION; RADIATION BELT ELECTRONS; GEOMAGNETIC STORMS; DISTRIBUTIONS; ACCELERATION; PARTICLE; EVENT;

D O I：

10.1029/2018JA026292

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Electromagnetic ion cyclotron (EMIC) waves are understood to be one of the dominant drivers of relativistic electron loss from Earth's radiation belts. Theory predicts that the associated gyroresonant wave-particle interaction results in a distinct energy-dependent "bite-out" signature in the normalized flux distribution of electrons as they are scattered into the loss cone. We identify such signatures along with the responsible EMIC waves captured in situ by the Van Allen Probes on 15-16 February 2017. Using the cold plasma approximation, we predict the pitch-angle cutoffs for the scattering signature for the captured EMIC wave and find it in good agreement with the observed electron bite-out scattering signature. Employing the close conjunction between the Van Allen Probes and THEMIS during this time, we explore the temporal and spatial evolution of the scattering signature, as well as the surrounding wave activity, and find that the scattering signature formed during continued wave activity over a period less than a day. These results are consistent with wave-particle interaction theory and support the hypothesis that EMIC waves are an important mechanism for rapid relativistic electron loss from the radiation belts.

引用

页码：5042 / 5055

页数：14

共 56 条

[1] The Space Physics Environment Data Analysis System (SPEDAS) [J].

Angelopoulos, V. ;

Cruce, P. ;

Drozdov, A. ;

Grimes, E. W. ;

Hatzigeorgiu, N. ;

King, D. A. ;

Larson, D. ;

Lewis, J. W. ;

McTiernan, J. M. ;

Roberts, D. A. ;

Russell, C. L. ;

Hori, T. ;

Kasahara, Y. ;

Kumamoto, A. ;

Matsuoka, A. ;

Miyashita, Y. ;

Miyoshi, Y. ;

Shinohara, I. ;

Teramoto, M. ;

Faden, J. B. ;

Halford, A. J. ;

McCarthy, M. ;

Millan, R. M. ;

Sample, J. G. ;

Smith, D. M. ;

Woodger, L. A. ;

Masson, A. ;

Narock, A. A. ;

Asamura, K. ;

Chang, T. F. ;

Chiang, C. -Y. ;

Kazama, Y. ;

Keika, K. ;

Matsuda, S. ;

Segawa, T. ;

Seki, K. ;

Shoji, M. ;

Tam, S. W. Y. ;

Umemura, N. ;

Wang, B. -J. ;

Wang, S. -Y. ;

Redmon, R. ;

Rodriguez, J. V. ;

Singer, H. J. ;

Vandegriff, J. ;

Abe, S. ;

Nose, M. ;

Shinbori, A. ;

Tanaka, Y. -M. ;

UeNo, S. .

SPACE SCIENCE REVIEWS, 2019, 215 (01)

[2]

Angelopoulos V, 2008, SPACE SCI REV, V141, P453, DOI 10.1007/s11214-008-9378-4

[3] The THEMIS Fluxgate Magnetometer [J].

Auster, H. U. ;

Glassmeier, K. H. ;

Magnes, W. ;

Aydogar, O. ;

Baumjohann, W. ;

Constantinescu, D. ;

Fischer, D. ;

Fornacon, K. H. ;

Georgescu, E. ;

Harvey, P. ;

Hillenmaier, O. ;

Kroth, R. ;

Ludlam, M. ;

Narita, Y. ;

Nakamura, R. ;

Okrafka, K. ;

Plaschke, F. ;

Richter, I. ;

Schwarzl, H. ;

Stoll, B. ;

Valavanoglou, A. ;

Wiedemann, M. .

SPACE SCIENCE REVIEWS, 2008, 141 (1-4) :235-264

[4] The Relativistic Electron-Proton Telescope (REPT) Instrument on Board the Radiation Belt Storm Probes (RBSP) Spacecraft: Characterization of Earth's Radiation Belt High-Energy Particle Populations [J].

Baker, D. N. ;

Kanekal, S. G. ;

Hoxie, V. C. ;

Batiste, S. ;

Bolton, M. ;

Li, X. ;

Elkington, S. R. ;

Monk, S. ;

Reukauf, R. ;

Steg, S. ;

Westfall, J. ;

Belting, C. ;

Bolton, B. ;

Braun, D. ;

Cervelli, B. ;

Hubbell, K. ;

Kien, M. ;

Knappmiller, S. ;

Wade, S. ;

Lamprecht, B. ;

Stevens, K. ;

Wallace, J. ;

Yehle, A. ;

Spence, H. E. ;

Friedel, R. .

SPACE SCIENCE REVIEWS, 2013, 179 (1-4) :337-381

[5] The Magnetic Electron Ion Spectrometer (MagEIS) Instruments Aboard the Radiation Belt Storm Probes (RBSP) Spacecraft [J].

Blake, J. B. ;

Carranza, P. A. ;

Claudepierre, S. G. ;

Clemmons, J. H. ;

Crain, W. R., Jr. ;

Dotan, Y. ;

Fennell, J. F. ;

Fuentes, F. H. ;

Galvan, R. M. ;

George, J. S. ;

Henderson, M. G. ;

Lalic, M. ;

Lin, A. Y. ;

Looper, M. D. ;

Mabry, D. J. ;

Mazur, J. E. ;

McCarthy, B. ;

Nguyen, C. Q. ;

O'Brien, T. P. ;

Perez, M. A. ;

Redding, M. T. ;

Roeder, J. L. ;

Salvaggio, D. J. ;

Sorensen, G. A. ;

Spence, H. E. ;

Yi, S. ;

Zakrzewski, M. P. .

SPACE SCIENCE REVIEWS, 2013, 179 (1-4) :383-421

[6] Observations of coincident EMIC wave activity and duskside energetic electron precipitation on 18-19 January 2013 [J].

Blum, L. W. ;

Halford, A. ;

Millan, R. ;

Bonnell, J. W. ;

Goldstein, J. ;

Usanova, M. ;

Engebretson, M. ;

Ohnsted, M. ;

Reeves, G. ;

Singer, H. ;

Clilverd, M. ;

Li, X. .

GEOPHYSICAL RESEARCH LETTERS, 2015, 42 (14) :5727-5735

[7] Ion observations from geosynchronous orbit as a proxy for ion cyclotron wave growth during storm times [J].

Blum, Lauren W. ;

MacDonald, Elizabeth A. ;

Gary, S. Peter ;

Thomsen, Michelle F. ;

Spence, Harlan E. .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2009, 114

[8] Scattering of Ultra-relativistic Electrons in the Van Allen Radiation Belts Accounting for Hot Plasma Effects [J].

Cao, Xing ;

Shprits, Yuri Y. ;

Ni, Binbin ;

Zhelavskaya, Irina S. .

SCIENTIFIC REPORTS, 2017, 7

[9] Bounce resonance scattering of radiation belt electrons by H+ band EMIC waves [J].

Cao, Xing ;

Ni, Binbin ;

Summers, Danny ;

Bortnik, Jacob ;

Tao, Xin ;

Shprits, Yuri Y. ;

Lou, Yuequn ;

Gu, Xudong ;

Fu, Song ;

Shi, Run ;

Xiang, Zheng ;

Wang, Qi .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2017, 122 (02) :1702-1713

[10] An improved dispersion relation for parallel propagating electromagnetic waves in warm plasmas: Application to electron scattering [J].

Chen, Lunjin ;

Thorne, Richard M. ;

Shprits, Yuri ;

Ni, Binbin .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2013, 118 (05) :2185-2195

← 1 2 3 4 5 6 →