The THEMIS Mission (Hardcover, 2009 ed.)

J.L. Burch*V. Angelopoulos Originally published in the journal Space Science Reviews, Volume 141, Nos 1-4, 1-3. DOI: 10.1007/s11214-008-9474-5 (c) Springer Science+Business Media B.V. 2008 The Earth, like all the other planets, is continuously bombarded by the solar wind, which is variable on many time scales owing to its connection to the activity of the Sun. But the Earth is unique among planets because its atmosphere, magnetic eld, and rotation rates are each signi cant, though not dominant, players in the formation of its magnetosphere and its reaction to solar-wind inputs. An intriguing fact is that no matter what the time scale of solar-wind variations, the Earth's response has a de nite pattern lasting a few hours. Known as a magnetospheric substorm, the response involves a build-up, a crash, and a recovery. The build-up (known as the growth phase) occurs because of an interlinking of the geom- netic eld and the solar-wind magnetic eld known as magnetic reconnection, which leads to storage of increasing amounts of magnetic energy and stress in the tail of the mag- tosphere and lasts about a half hour. The crash (known as the expansion phase) occurs when the increased magnetic energy and stresses are impulsively relieved, the current system that supports the stretched out magnetic tail is diverted into the ionosphere, and bright, dynamic displays of the aurora appear in the upper atmosphere. The expansion and subsequent rec- ery phases result from a second magnetic reconnection event that decouples the solar-wind and geomagnetic elds.

General

Imprint:	Springer-Verlag New York
Country of origin:	United States
Release date:	May 2009
First published:	2010
Editors:	James L. Burch • Vassilis Angelopoulos
Dimensions:	235 x 155 x 28mm (L x W x T)
Format:	Hardcover
Pages:	583
Edition:	2009 ed.
ISBN-13:	978-0-387-89819-3
Categories:	Books > Earth & environment > Earth sciences > General Books > Professional & Technical > Transport technology > Aerospace & aviation technology > General Books > Professional & Technical > Other technologies > Space science > Astronautics
LSN:	0-387-89819-0
Barcode:	9780387898193

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