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Titolo:
Pulsed boundary layers observed during a Geotail magnetopause skimming orbit
Autore:
Kim, KH; Lin, N; Cattell, CA; Song, Y; Wygant, JR; Lee, DH; 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 449701, Kyunggi, South Korea Kyung Hee Univ Yongin Kyunggi South Korea 449701 01, Kyunggi, South Korea Kyushu Univ, Dept Earth & Planetary Sci, Fukuoka 812, Japan Kyushu Univ Fukuoka Japan 812 Earth & Planetary Sci, Fukuoka 812, Japan Inst Space & Astronaut Sci, Sagamihara, Kanagawa 229, Japan Inst Space & Astronaut Sci Sagamihara Kanagawa Japan 229 agawa 229, Japan Nagoya Univ, Solar Terr Environm Lab, Toyokawa, Japan Nagoya Univ Toyokawa Japan iv, Solar Terr Environm Lab, Toyokawa, Japan
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
fascicolo: A2, volume: 106, anno: 2001,
pagine: 1917 - 1929
SICI:
0148-0227(20010201)106:A2<1917:PBLODA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLUX-TRANSFER EVENTS; INTERPLANETARY MAGNETIC-FIELD; AMPTE-IRM OBSERVATIONS; DAYSIDE MAGNETOPAUSE; ISEE-1 SPACECRAFT; MAGNETOSPHERE; PLASMA; RECONNECTION; CONVECTION; TRANSIENT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
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., "Pulsed boundary layers observed during a Geotail magnetopause skimming orbit", J GEO R-S P, 106(A2), 2001, pp. 1917-1929

Abstract

On January 8, 1996, the Geotail satellite skimmed along the dayside magnetopause from the dawnside to the duskside and observed a series of quasiperiodically recurring pulsed boundary layers in the prenoon (similar to 0900-1000 LT) and the postnoon (similar to 1400-1500 LT) sectors. For both intervals the interplanetary magnetic field observed by the Wind satellite upstream of the bow shock was inferred to be southward from an estimated convection time between Wind and Geotail. During the pulsed events, Geotail observed bipolar signatures in the magnetic field component normal to the nominal magnetopause. In the prenoon sector the bipolar variation had the inward-then-outward polarity, while in the postnoon sector the polarity was opposite(i.e., outward-then-inward). The plasma flows normal to the nominal magnetopause showed bipolar signatures with the inward-then-outward polarity in the prenoon and postnoon sectors. They were accompanied by sunward flows forthe lower-density pulsed events and by tailward flows for the higher-density pulsed events. We have interpreted the sunward flow as the local plasma response to a tailward moving flux tube. This may imply that the sunward plasma flow near the magnetopause does not always reflect the direction of the motion of the flux tube. On the basis of these observations, we suggest that the observed pulsed boundary layers are attributed to the passage of a train of flux transfer events propagating tailward.

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Documento generato il 26/11/20 alle ore 10:40:19