SM23C:
Understanding Earth’s Ring Current: Measurements, Theory, and Modeling I


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Session ID#: 61080

Session Description:
Understanding the formation and the decay of Earth'€™s ring-current is one of the most important topics in magnetospheric physics. It is known that Earth's ring-current formation, mostly due to the ion dynamics, has a profound impact on Earth's magnetic field and on the dynamics of trapped radiation.  As the ions are injected into, and drift, through the Earth'€™s inner magnetosphere they interact with the intrinsic and induced electric and magnetic fields. Wave-particle interactions are then an important component of the ring current dynamics. Other processes, such as charge exchange, diffusion, etc., are also important in the lifetime of the ring-current, which effects are more important in different regions of the magnetosphere are still outstanding questions. This session seeks observational contributions using data from current missions such as Van Allen Probes, Arase (ERG), MMS, THEMIS, Cluster, etc., and new results on theory and modeling of ring current processes.
Primary Convener:  A. Rualdo Soto Chavez, Syntek Technologies, Inc, Fairfax, VA, United States
Conveners:  Jerry Wayne Manweiler, Fundamental Technologies, LLC, Lawrence, KS, United States and Kunihiro Keika, University of Tokyo, Graduate School of Science, Bunkyo-ku, Japan
Primary Liaison:  A. Rualdo Soto Chavez, Syntek Technologies, Inc, Fairfax, VA, United States
Chairs:  A. Rualdo Soto Chavez, Princeton University, Princeton, NJ, United States and Jerry Wayne Manweiler, Fundamental Technologies, LLC, Lawrence, KS, United States
OSPA Liaison:  Kunihiro Keika, University of Tokyo, Graduate School of Science, Bunkyo-ku, Japan
Index Terms:

2720 Energetic particles: trapped [MAGNETOSPHERIC PHYSICS]
2772 Plasma waves and instabilities [MAGNETOSPHERIC PHYSICS]
2778 Ring current [MAGNETOSPHERIC PHYSICS]
2788 Magnetic storms and substorms [MAGNETOSPHERIC PHYSICS]

Abstracts Submitted to this Session:

The Big Picture: Imaging the Ring Current with TWINS (Invited) (381029)
Jerry Goldstein1, Kristie LLera2, David J McComas3, Jillian A Redfern4 and Philip W Valek1, (1)Southwest Research Institute, San Antonio, United States, (2)University of Texas at San Antonio, San Antonio, TX, United States, (3)Princeton University, Department of Astrophysical Sciences, Princeton, NJ, United States, (4)Southwest Research Institute, Boulder, CO, United States
Cusp and Nightside Auroral Sources of O+ in the Plasma Sheet and Ring Current (395413)
Lynn M Kistler1,2, Christopher Mouikis3, Kazushi Asamura4, Shoichiro Yokota5, Satoshi Kasahara6, Yoshizumi Miyoshi7, Ayako Matsuoka5, Iku Shinohara4, Kunihiro Keika8, Steven M Petrinec9 and Ian J Cohen10, (1)University of New Hampshire, Durham, United States, (2)Nagoya University, Nagoya, Japan, (3)Univ New Hampshire, Durham, United States, (4)ISAS, JAXA, Sagamihara, Japan, (5)ISAS/JAXA, Sagamihara, Japan, (6)The University of Tokyo, Graduate School of Science, Tokyo, Japan, (7)Nagoya University, Institute for Space-Earth Environmental Research, Nagoya, Japan, (8)University of Tokyo, Graduate School of Science, Bunkyo-ku, Japan, (9)Lockheed Martin ATC, Belmont, CA, United States, (10)Johns Hopkins University Applied Physics Laboratory, Laurel, United States
Statistical Study of Selective Transport of Energetic Oxygen Ions During Magnetic Storms Observed by Van Allen Probes in 2013-2017 (427769)
Kenji Mitani, Nagoya-university, Institute for Space-Earth Environmental Research, Nagoya city, Japan, Kanako Seki, The University of Tokyo, Research Center for Advanced Science and Technology, Tokyo, Japan, Kunihiro Keika, University of Tokyo, Graduate School of Science, Bunkyo-ku, Japan, Matina Gkioulidou, JHU/APL, Laurel, United States, Louis J Lanzerotti, New Jersey Inst Tech, Newark, United States, Donald G Mitchell, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Craig Kletzing, University of Iowa, Physics and Astronomy, Iowa City, United States, Akimasa Yoshikawa, Kyushu University, Department of Earth and Planetary Sciences, Fukuoka, Japan and Yuki Obana, Osaka Electro-Communicat. Univ, Osaka, Japan
Oxygen ion dynamics in Earth’s ring current: Van Allen Probes observations (358735)
Chao Yue, University of California Los Angeles, Los Angeles, United States, Jacob Bortnik, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, Wen Li, Boston University, Boston, MA, United States, Qianli Ma, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, Chih-Ping Wang, University of California Los Angeles, Los Angeles, CA, United States, Richard M Thorne, UCLA, Los Angeles, CA, United States and Larry R Lyons, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States
On the Accumulation of Ionospheric O+ Ions in the Plasma Sheet and Inner Magnetosphere: When, Where, How? (437705)
Matina Gkioulidou1, Shinichi Ohtani2, Donald G Mitchell1 and Louis J Lanzerotti3, (1)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (2)Johns Hopkins University Applied Physics Laboratory, Laurel, United States, (3)New Jersey Inst Tech, Newark, United States
Assessing the role of heavy ions in the dynamics of the near-Earth environment (Invited) (384422)
Raluca Ilie, University of Illinois at Urbana Champaign, Electrical and Computer Engineering, Urbana, United States, Mei-Yun Lin, University of California Berkeley, Berkeley, United States, Muhammad Fraz Bashir, University of California Los Angeles, Department of Earth, Planetary, and Space Science, Los Angeles, CA, United States and Yu Huang, CAS Chinese Academy of Sciences, Institute of Atmospheric Physics, Beijng, China

See more of: SPA-Magnetospheric Physics