Spontaneous hot flow anomalies at quasi-parallel shocks: 1. Observations

doi:10.1002/jgra.50376

CORC > 北京大学 > 地球与空间科学学院

	Spontaneous hot flow anomalies at quasi-parallel shocks: 1. Observations
	Zhang, H. ; Sibeck, D. G. ; Zong, Q.G. ; Omidi, N. ; Turner, D. ; Clausen, L. B. N.
刊名	journal of geophysical research space physics
	2013
关键词	hot flow anomaly quasi-parallel shocks foreshock EARTHS BOW SHOCK GLOBAL HYBRID SIMULATION FORESHOCK CAVITIES DIAMAGNETIC CAVITIES SOLAR-WIND MAGNETOPAUSE INSTRUMENT UPSTREAM
DOI	10.1002/jgra.50376
英文摘要	We present Time History of Events and Macroscale Interactions during Substorms (THEMIS) observations of a Spontaneous Hot Flow Anomaly (SHFA) upstream from the prenoon bow shock at 0431 UT on 12 August 2007. Although the SHFA exhibited the greatly heated and deflected solar wind plasmas used to identify hot flow anomalies (HFAs), it did not result from the standard mechanism invoked for the formation of HFAs, namely the interaction of an interplanetary magnetic field (IMF) discontinuity with the bow shock. We employ THEMIS A, B, C, and D observations to describe the evolution of the event from a proto-SHFA exhibiting regions of depressed magnetic field strength and density but little evidence for plasma heating or flow deflection, to a well-developed SHFA further downstream. These observations show that SHFA can be generated without the presence of an IMF discontinuity and are therefore a new category of HFAs.; Astronomy & Astrophysics; SCI(E); 8; ARTICLE; 6; 3357-3363; 118
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/222719]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhang, H.,Sibeck, D. G.,Zong, Q.G.,et al. Spontaneous hot flow anomalies at quasi-parallel shocks: 1. Observations[J]. journal of geophysical research space physics,2013.
APA	Zhang, H.,Sibeck, D. G.,Zong, Q.G.,Omidi, N.,Turner, D.,&Clausen, L. B. N..(2013).Spontaneous hot flow anomalies at quasi-parallel shocks: 1. Observations.journal of geophysical research space physics.
MLA	Zhang, H.,et al."Spontaneous hot flow anomalies at quasi-parallel shocks: 1. Observations".journal of geophysical research space physics (2013).