气候变化领域集成服务门户(CCPortal): Evolution of a Foreshock Bubble in the Midtail Foreshock and Impact on the Magnetopause: 3-D Global Hybrid Simulation

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DOI	10.1029/2020GL089844
	Evolution of a Foreshock Bubble in the Midtail Foreshock and Impact on the Magnetopause: 3-D Global Hybrid Simulation
	Wang C.-P.; Wang X.; Liu T.Z.; Lin Y.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Foreshock transients have been observed in the midtail foreshock. How a foreshock transient evolves in nightside foreshock and how it may impact the midtail bow shock, magnetosheath, and magnetopause has not been simulated. In this study, we present three-dimensional global hybrid simulation results of a foreshock bubble (FB) driven by an interplanetary magnetic field (IMF) rotational discontinuity. As the FB propagates in the nightside foreshock, its spatial size grows to >10 RE, and its density and dynamic pressure perturbations are enhanced by >50% of the solar wind values. As the FB interacts with the nightside bow shock, the bow shock is temporarily eroded, and the corresponding dynamic pressure perturbations in the magnetosheath penetrate deep to the magnetopause, causing localized distortion of the magnetopause shape. As the FB moves tailward, it continuously generates new perturbations in the magnetosheath and magnetopause following FB's propagation. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Magnetopause; Plasma shock waves; Bow shocks; Dynamic pressures; Hybrid simulation; Interplanetary magnetic fields; Magnetosheaths; Spatial size; Earthquakes; foreshock; magnetic field; magnetopause; perturbation; simulation; solar wind
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169390
作者单位	Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, United States; Physics Department, Auburn University, Auburn, AL, United States; Cooperative Programs for the Advancement of Earth System Science, University Corporation for Atmospheric Research, Boulder, CO, United States; Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States
推荐引用方式 GB/T 7714	Wang C.-P.,Wang X.,Liu T.Z.,et al. Evolution of a Foreshock Bubble in the Midtail Foreshock and Impact on the Magnetopause: 3-D Global Hybrid Simulation[J],2020,47(22).
APA	Wang C.-P.,Wang X.,Liu T.Z.,&Lin Y..(2020).Evolution of a Foreshock Bubble in the Midtail Foreshock and Impact on the Magnetopause: 3-D Global Hybrid Simulation.Geophysical Research Letters,47(22).
MLA	Wang C.-P.,et al."Evolution of a Foreshock Bubble in the Midtail Foreshock and Impact on the Magnetopause: 3-D Global Hybrid Simulation".Geophysical Research Letters 47.22(2020).