SM008
Current State of Knowledge of the Earth’s Ring-Current

Session ID#: 83887

Session Description:
Formation and decay of Earth's ring-current is a critical topic in magnetospheric physics. Reacting to external forcing from variability in Space Weather, Earth's ring-current has profound impacts on Earth's magnetosphere and on dynamics of trapped radiation. As ions/electrons are injected into the inner magnetosphere, they become energized, and drift forming the Ring Current. Coupling between anisotropic plasma and waves (EMIC, chorus, etc.) comprise critical aspects of development/decay of the Ring Current. Other processes, such as ionospheric coupling, charge exchange, and diffusion play key roles in the lifetimes of Ring Current particles. Which effects critically drive the dynamics varies significantly between regions and represent key outstanding questions especially in transition regions where coupled systems and non-linear dynamics play important roles. This session seeks observational and theoretical contributions using data from current missions: Van Allen Probes, Arase (ERG), MMS, THEMIS, Cluster, coupled with new results derived from modeling of ring current processes.
Index Terms:

7807 Charged particle motion and acceleration [SPACE PLASMA PHYSICS]
7839 Nonlinear phenomena [SPACE PLASMA PHYSICS]
7859 Transport processes [SPACE PLASMA PHYSICS]
7867 Wave/particle interactions [SPACE PLASMA PHYSICS]

Primary Convener:  Jerry Wayne Manweiler, Fundamental Technologies, LLC, Lawrence, KS, United States
Conveners:  A. Rualdo Soto-chavez, Syntek Technologies, Inc, Fairfax, VA, United States and Kunihiro Keika, The University of Tokyo, Tokyo, Japan
Primary Liaison:  Jerry Wayne Manweiler, Fundamental Technologies, LLC, Lawrence, KS, United States
 
Quantifying the effect of magnetic field line curvature scattering on the Rapid Loss of ring current ions (489461)
Wondwossen Wubie Eshetu1, Weichao Tu2, Vania K Jordanova2 and Misa Cowee2, (1)West Virginia University, Department of Physics and Astronomy, Morgantown, NH, United States, (2)Los Alamos National Laboratory, Los Alamos, NM, United States
 
The role of field line curvature (FLC) scattering on ring current dynamics and ionospheric electrodynamics (492649)
Yiqun Yu1, Xingbin Tian1 and Vania K Jordanova2, (1)Beihang University, Beijing, China, (2)Los Alamos National Laboratory, Los Alamos, NM, United States
 
Constituent parts of the Earth's ring current (Invited) (494533)
Natalia Y Ganushkina, University of Michigan Ann Arbor, Ann Arbor, MI, United States and Michael Warren Liemohn, University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States
 
Cross-Scale Physics: MMS, TWINS, and Van Allen Probes Observations of Substorm Dipolarization (496740)
Jerry Goldstein1, Philip W Valek2, David J McComas3, Jillian A Redfern4, Harlan E. Spence5, Ruth M Skoug6, Brian Larsen6, Reeves Geoffrey6 and Rumi Nakamura7, (1)Southwest Research Institute, San Antonio, TX, United States, (2)Southwest Research Inst, San Antonio, TX, United States, (3)Princeton University, Department of Astrophysical Sciences, Princeton, NJ, United States, (4)Southwest Research Institute, Boulder, CO, United States, (5)University of New Hampshire, Durham, NH, United States, (6)Los Alamos National Laboratory, Los Alamos, NM, United States, (7)Space Reserach Institute, Austrian Academy of Sciences, Graz, Austria
 
Meridional Distribution of Middle-energy Protons And Pressure-Driven Currents in the Nightside Inner Magnetosphere: Arase Observations (498261)
Shun Imajo1, Masahito Nose2, Satoshi Kasahara3, Shoichiro Yokota4, Ayako Matsuoka5, Kunihiro Keika6, Tomoaki Hori7, Mariko Teramoto8, Kazuhiro Yamamoto9, Satoshi Oimatsu9, Reiko Nomura10, Akiko Fujimoto11, Iku Shinohara12 and Yoshizumi Miyoshi7, (1)Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan, (2)Nagoya Univeristy, Institute for Space-Earth Environmental Research, Nagoya, Japan, (3)University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan, (4)Osaka University, Osaka, Japan, (5)ISAS/JAXA, Sagamihara, Japan, (6)The University of Tokyo, Tokyo, Japan, (7)Nagoya University, ISEE, Nagoya, Japan, (8)Kyushu Institute of Technology, Tobata, Japan, (9)Kyoto University, Kyoto, Japan, (10)Technical University of Braunschweig, Braunschweig, Germany, (11)Kyushu Institute of Technology, Department of Artificial Intelligence, Izuka, Japan, (12)JAXA, ISAS, Sagamihara Kanagawa, Japan
 
Investigating Sources of the Storm-time Ring Current (Invited) (510883)
Lynn M Kistler and Christopher Mouikis, Univ New Hampshire, Durham, NH, United States
 
Statistical properties of molecular ions in the ring current observed by the Arase (ERG) satellite (513451)
Kanako Seki1, Kunihiro Keika2, Satoshi Kasahara1, Shoichiro Yokota3, Tomoaki Hori4, Kazushi Asamura5, Nana Higashio1, Masayoshi Takada1, Yasunobu Ogawa6, Ayako Matsuoka5, Mariko Teramoto7, Yoshizumi Miyoshi4 and Iku Shinohara5, (1)University of Tokyo, Department of Earth and Planetary Science, Bunkyo-ku, Japan, (2)The University of Tokyo, Tokyo, Japan, (3)Osaka University, Osaka, Japan, (4)Nagoya University, ISEE, Nagoya, Japan, (5)ISAS/JAXA, Sagamihara, Japan, (6)NIPR National Institute of Polar Research, Tokyo, Japan, (7)Kyushu Institute of Technology, Tobata, Japan
 
Comparison of electromagnetic ion cyclotron (EMIC) wave distributions between the magnetic equator and higher magnetic latitudes using the Van Allen Probes and ERG satellite (513718)
Chae Woo Jun1, Yoshizumi Miyoshi1, Chao Yue2, Jacob Bortnik2, Larry R Lyons2, Toshi Nishimura3, Craig Kletzing4, Yoshiya Kasahara5, Yasumasa Kasaba6, Shoya Matsuda5, Masafumi Shoji1, Fuminori Tsuchiya6, Atsushi Kumamoto6, Ayako Matsuoka7 and Iku Shinohara7, (1)Nagoya University, ISEE, Nagoya, Japan, (2)University of California Los Angeles, Los Angeles, CA, United States, (3)Boston University, Boston, MA, United States, (4)University of Iowa, Iowa City, IA, United States, (5)Kanazawa University, Kanazawa, Japan, (6)Tohoku University, Sendai, Japan, (7)ISAS/JAXA, Sagamihara, Japan
 
Statistical analysis for trunk structure of ring current ions using Arase ion observations (514015)
Ryosuke Fujii1, Yoshizumi Miyoshi2, Masafumi Shoji2, Kazushi Asamura3, Lynn M Kistler4, Vania K Jordanova5, Tomoaki Hori2, Shoichiro Yokota3, Satoshi Kasahara3, Kunihiro Keika6, Ayako Matsuoka3 and Iku Shinohara7, (1)Nagoya University, Nagoya, Japan, (2)Nagoya University, ISEE, Nagoya, Japan, (3)ISAS/JAXA, Sagamihara, Japan, (4)Univ New Hampshire, Durham, NH, United States, (5)Los Alamos National Laboratory, Los Alamos, NM, United States, (6)The University of Tokyo, Tokyo, Japan, (7)JAXA, ISAS, Sagamihara Kanagawa, Japan
 
Perpendicular heating of cold ions and fast magnetosonic waves in the inner magnetosphere observed by Arase (ERG) satellite (533943)
Kazushi Asamura1, Yoshizumi Miyoshi2, Masafumi Shoji2, Ryosuke Fujii3, Yasumasa Kasaba4, Yoshiya Kasahara5 and Ayako Matsuoka1, (1)ISAS/JAXA, Sagamihara, Japan, (2)Nagoya University, ISEE, Nagoya, Japan, (3)Nagoya University, Nagoya, Japan, (4)Tohoku University, Sendai, Japan, (5)Kanazawa University, Kanazawa, Japan
 
Impact of Loss Processes on Modeling the Ring Current (555843)
Miles Engel, Vania K Jordanova, Steven Morley and Michael G Henderson, Los Alamos National Laboratory, Los Alamos, NM, United States
 
The Evolution of Plasma Sheet Injections into the Ring Current Region (581719)
William D Cramer, University of New Hampshire Main Campus, Durham, NH, United States, Joachim Raeder, University of New Hampshire, Institute for the Study of Earth, Oceans, and Space, Durham, NH, United States, Frank Toffoletto, Rice University, Physics and Astronomy Department, Houston, TX, United States and Christine Gabrielse, University of California Los Angeles, Los Angeles, CA, United States
 
How small changes in the magnetopause current help trap the ring current population (623872)
Raluca Ilie, University of Illinois at Urbana Champaign, Electrical and Computer Engineering, Urbana, IL, United States, Jianghuai Liu, University of Illinois at Urbana-Champaign, Electrical and Computer Engineering, Urbana, United States, Lunjin Chen Dr., University of Texas at Dallas, Richardson, TX, United States, Hui Zhu, University of California Los Angeles, EPSS, Los Angeles, CA, United States, Gabor Toth, University of Michigan, Ann Arbor, MI, United States, Muhammad Fraz Bashir, University of Illinois at Urbana Champaign, Urbana, IL, United States and Michael Warren Liemohn, University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States
 
The impact of storm-time ion composition changes in the near-earth plasma sheet on ring current pressure development (625692)
Christopher Mouikis1, Lynn M Kistler2, Mei-Ching Hannah Fok3, Cristian Ferradas4, Sam Bingham1, Harlan E. Spence5, Stephen A Fuselier6, Geoffrey D Reeves7 and Matina Gkioulidou8, (1)University of New Hampshire Main Campus, Durham, NH, United States, (2)Univ New Hampshire, Durham, NH, United States, (3)NASA Goddard Space Flight Center, Heliophysics Division, Greenbelt, MD, United States, (4)New Mexico Consortium, Los Alamos, NM, United States, (5)University of New Hampshire, Durham, NH, United States, (6)Southwest Research Institute, San Antonio, TX, United States, (7)Los Alamos National Laboratory, Los Alamos, NM, United States, (8)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
See more of: SPA-Magnetospheric Physics
<< Previous Session Proposal | Next Session Proposal >>