JpGU-AGU Joint Meeting 2017

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[EE] Oral

P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM16] [EE] Physics of Inner Magnetosphere Coupling

Wed. May 24, 2017 9:00 AM - 10:30 AM A02 (Tokyo Bay Makuhari Hall)

convener:Danny Summers(Memorial University of Newfoundland), Jichun Zhang(University of New Hampshire Main Campus), Yusuke Ebihara(Research Institute for Sustainable Humanosphere, Kyoto University), Kunihiro Keika(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo ), Aleksandr Y Ukhorskiy(Johns Hopkins University Applied Physics Laboratory), Dae-Young Lee(Chungbuk Natl Univ), Yiqun Yu(Beihang University), Yoshizumi Miyoshi(Institute for Space-Earth Environmental Research, Nagoya University), Chairperson:Jichun Zhang(University of New Hampshire Main Campus)

9:00 AM - 9:15 AM

[PEM16-19] Recent progresses in understanding the contribution of EMIC waves to radiation belt electron scattering

★Invited papers

*Binbin Ni1, Xing Cao1, Danny Summers2, Song Fu1, Jacob Bortnik3, Xin Tao4, Yuri Shprits5 (1.Wuhan University, 2.Memorial University of Newfoundland, 3.University of California, Los Angeles, 4.University of Science and Technology of China, 5.German Research Centre For Geosciences)

Keywords:Earth's radiation belts, resonant wave-particle interactions, EMIC waves

Resonant wave-particle interactions are long thought as a fundamental cause driving the dynamic variability of Earth's electron radiation belts. In terms of violating one or more adiabatic invariants, magnetospheric waves have been regarded as a necessary agent to transfer energies between different populations of particles. This presentation focuses on some recent progresses in understanding the electron scattering effects of EMIC waves. While cyclotron resonant electron scattering by EMIC waves has been well studied and found to be a potentially crucial electron scattering mechanism, the recent investigation demonstrates that bounce resonant electron scattering may also be very important in a manner to resonate with near-equatorially mirroring electrons over a wide range of L-shells and energies. It is strongly suggested that bounce resonance scattering by EMIC waves should be incorporated into future modeling efforts of radiation belt electron dynamics.