SA41C:
Geomagnetic Storms, Substorms, and Subauroral Polarization Streams: Toward a Synthesis of Observations, Theory, and Modeling in Magnetosphere-Ionosphere-Thermosphere (M-I-T) Coupling I

Submit an Abstract to this Session



Session ID#: 32171

Session Description:
Geomagnetic storms and substorms have dramatic consequences for the coupled Magnetosphere-Ionosphere-Thermosphere (M-I-T) system that test our system-level understanding. The Sub-Auroral Polarization Stream (SAPS) is one such consequence, understood as a latitudinally narrow band of enhanced poleward-directed (ionosphere) / radially directed (magnetosphere) electric field that has a width of one to several degrees and extends across many hours of magnetic local time towards the evening sector. SAPS are present in regions equatorward of the auroral electron precipitation boundary. We welcome presentations that address ionospheric and thermospheric dynamics resulting from M-I-T coupling with specific focus on the cross-domain connections to magnetospheric drivers. Experimental, theoretical and model-based estimates of the location, extent and intensity of currents, electric fields and composition and density structures are of interest. Interpreted simulation results of the coupled system are sought. We welcome comprehensive analyses of events selected in the CEDAR-GEM SAPS challenge.
Primary Convener:  Stanislav Y Sazykin, Rice University, Physics and Astronomy Department, Houston, TX, United States
Conveners:  Philip John Erickson, MIT Haystack Observatory, Westford, United States, J. Michael Ruohoniemi, Virginia Polytechnic Institute and State University, Blacksburg, United States and Simon G Shepherd, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States
Chairs:  Philip John Erickson, MIT Haystack Observatory, Westford, United States and Stanislav Y Sazykin, Rice University, Physics and Astronomy Department, Houston, TX, United States
OSPA Liaison:  Simon G Shepherd, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States

Cross-Listed:
  • SM - SPA-Magnetospheric Physics
Index Terms:

2411 Electric fields [IONOSPHERE]
2431 Ionosphere/magnetosphere interactions [IONOSPHERE]
2463 Plasma convection [IONOSPHERE]
2788 Magnetic storms and substorms [MAGNETOSPHERIC PHYSICS]

Abstracts Submitted to this Session:

SAPS and SAID: Differences and implications on modeling (Invited) (211123)
Phillip Charles Anderson, University of Texas at Dallas, W. B. Hanson Center for Space Sciences, Richardson, TX, United States and Russell G Landry, University of Texas at Dallas, Richardson, TX, United States
SAID/SAPS Revisited: A Causal Relation to the Substorm Current Wedge (214391)
Evgeny V Mishin, Kirtland Air Force Base, Kirtland AFB, NM, United States
Relation between the Sub-Auroral Polarization Stream and Energetic Particle Injection during Substorms (222279)
Zihan Wang1, Shasha Zou2, Jesper W Gjerloev3, John R Wygant4, J. Michael Ruohoniemi5 and Bharat Kunduri5, (1)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (2)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, United States, (3)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States, (4)University of Minnesota, School of Physics and Astronomy, Minneapolis, United States, (5)Virginia Polytechnic Institute and State University, Blacksburg, United States
Pathway and conversion of energy incident on auroral and sub-auroral ionosphere at substorm expansion onset (237293)
Yusuke Ebihara, Kyoto University, Research Institute for Sustainable Humanosphere, Kyoto, Japan and Takashi Tanaka, Kyushu University, Faculty of Science, Fukuoka, Japan
Observations and global numerical modelling of the St. Patrick's Day 2015 geomagnetic storm event (262189)
Matthias Foerster, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, German Research Centre for Geosciences, Potsdam, Germany, Boris E. Prokhorov, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany, Eelco Doornbos, Royal Netherlands Meteorological Institute, Aerospace Engineering, De Bilt, Netherlands, Elvira Astafyeva, IPGP - Institut de Physique du Globe de Paris, Paris, France and Irina Zakharenkova, Institut de Physique du Globe de Paris, Paris, France
Sub-Auroral Polarization Stream (SAPS) Events Under Non-storm Conditions (290845)
Stanislav Y Sazykin1, Anthea Coster2, Joseph Huba3, Robert W Spiro4, Joseph BH Baker5, Bharat Kunduri6, J. Michael Ruohoniemi6, Philip John Erickson7 and Richard Wolf1, (1)Rice University, Physics and Astronomy Department, Houston, TX, United States, (2)MIT Haystack Observatory, Westford, MA, United States, (3)US Naval Research Laboratory, Plasma Physics Division, Washington, DC, United States, (4)Rice Univ, Houston, TX, United States, (5)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (6)Virginia Polytechnic Institute and State University, Blacksburg, United States, (7)MIT Haystack Observatory, Westford, United States
Observations of subauroral ion drift (SAID) occurrence statistics and associated ionospheric conditions measured by the Defense Meteorological Satellite Program (DMSP) and Dynamics Explorer 2 (DE-2). (299165)
Russell Landry, Air Force Research Laboratory Albuquerque, Albuquerque, NM, United States and Phillip Charles Anderson, University of Texas at Dallas, W. B. Hanson Center for Space Sciences, Richardson, TX, United States

See more of: SPA-Aeronomy