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Titolo:
Simultaneous satellite and ground observations of transient events near the morningside magnetopause
Autore:
Kim, KH; Lin, N; Cattell, CA; Song, Y; Lee, DH; Engebretson, MJ; Kawano, H; Kokubun, S; Mukai, T; Tsuruda, K;
Indirizzi:
Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA Univ Minnesota Minneapolis MN USA 55455 Astron, Minneapolis, MN 55455 USA Kyung Hee Univ, Dept Astron & Space Sci, Yongin, Kyunggi, South Korea Kyung Hee Univ Yongin Kyunggi South Korea , Yongin, Kyunggi, South Korea Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA Univ Minnesota Minneapolis MN USA 55455 t Phys, Minneapolis, MN 55455 USA Augsburg Coll, Dept Phys, Minneapolis, MN 55454 USA Augsburg Coll Minneapolis MN USA 55454 pt Phys, Minneapolis, MN 55454 USA Kyushu Univ, Dept Earth & Planetary Sci, Fukuoka 812, Japan Kyushu Univ Fukuoka Japan 812 Earth & Planetary Sci, Fukuoka 812, Japan Nagoya Univ, Solar Terr Environm Lab, Toyokawa, Japan Nagoya Univ Toyokawa Japan iv, Solar Terr Environm Lab, Toyokawa, Japan Inst Space & Astronaut Sci, Sagamihara, Kanagawa 229, Japan Inst Space & Astronaut Sci Sagamihara Kanagawa Japan 229 agawa 229, Japan
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A4, volume: 106, anno: 2001,
pagine: 5743 - 5760
SICI:
0148-0227(20010401)106:A4<5743:SSAGOO>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLUX-TRANSFER EVENTS; WIND DYNAMIC PRESSURE; INTERPLANETARY MAGNETIC-FIELD; SOLAR-WIND; MAGNETOSPHERIC RESPONSE; EARTHS MAGNETOPAUSE; ISEE-1 SPACECRAFT; GEOTAIL SATELLITE; BOUNDARY WAVES; CONVECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Kim, KH Univ Minnesota, Sch Phys & Astron, 116 Church St SE, Minneapolis, MN 55455USA Univ Minnesota 116 Church St SE Minneapolis MN USA 55455 55455USA
Citazione:
K.H. Kim et al., "Simultaneous satellite and ground observations of transient events near the morningside magnetopause", J GEO R-S P, 106(A4), 2001, pp. 5743-5760

Abstract

We present observations of transient events on April 13, 1996, using simultaneous measurements in the solar wind, near the magnetopause, at geosynchronous orbit, and on the ground at high latitudes. On this day, Geotail passed outbound through the morningside magnetopause. When Geotail was in the magnetosphere, a clear bipolar perturbation in the magnetic field component normal to the nominal magnetopause and transient outbound (from the magnetosphere to the magnetosheath) /inbound (from the magnetosheath to the magnetosphere) magnetopause crossings were observed. When Geotail was in the magnetosheath, inbound/outbound crossings were observed. During the bipolar magnetic field signature, Geotail observed asymmetric bipolar (less inward/more outward) flow normal to the nominal magnetopause accompanied by sunward flow. Inward flow was observed when the total magnetic field of the event was enhanced, whereas outward flow was observed when the total magnetic fieldwas depressed. We observed that some of the transient outbound/inbound crossings show significantly different signatures in the plasma flow and magnetic field, that is, weak inward flow and enhanced magnetic field before theoutbound crossing and strong outward flow and decreased magnetic field after the inbound crossing. The field and flow variations during the transientoutbound/inbound crossings are qualitatively similar to those during the bipolar magnetic field signature. These observations suggest that the bipolar field signature and the transient magnetopause crossings would be similarphenomena on the magnetopause. We discuss whether the observed field and how variations during the transient events are caused by inward/outward magnetopause motion due to compression/expansion of the magnetosphere by comparing the data sets obtained from different regions of the solar wind-magnetosphere system.

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Documento generato il 09/07/20 alle ore 20:16:54