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Rapid and asymmetric response of the Earth's bow shock: multipoint observations

LIU Bing DUNLOP M W CAO Jinbin LAVRAUD B LI Liuyuan YANG Junying

LIU Bing, DUNLOP M W, CAO Jinbin, LAVRAUD B, LI Liuyuan, YANG Junying. Rapid and asymmetric response of the Earth's bow shock: multipoint observations[J]. 空间科学学报, 2017, 37(2): 129-139. doi: 10.11728/cjss2017.02.129
引用本文: LIU Bing, DUNLOP M W, CAO Jinbin, LAVRAUD B, LI Liuyuan, YANG Junying. Rapid and asymmetric response of the Earth's bow shock: multipoint observations[J]. 空间科学学报, 2017, 37(2): 129-139. doi: 10.11728/cjss2017.02.129
LIU Bing, DUNLOP M W, CAO Jinbin, LAVRAUD B, LI Liuyuan, YANG Junying. Rapid and asymmetric response of the Earth's bow shock: multipoint observations[J]. Journal of Space Science, 2017, 37(2): 129-139. doi: 10.11728/cjss2017.02.129
Citation: LIU Bing, DUNLOP M W, CAO Jinbin, LAVRAUD B, LI Liuyuan, YANG Junying. Rapid and asymmetric response of the Earth's bow shock: multipoint observations[J]. Journal of Space Science, 2017, 37(2): 129-139. doi: 10.11728/cjss2017.02.129

Rapid and asymmetric response of the Earth's bow shock: multipoint observations

doi: 10.11728/cjss2017.02.129
基金项目: 

Supported by STFC in-house research grant and by NSFC grants (D041003, 41431071)

详细信息
    作者简介:

    LIU Bing,E-mail:buaa bingliu@sina.com;DUNLOP M W,E-mail:malcolm.dunlop@stfc.ac.uk

  • 中图分类号: P353

Rapid and asymmetric response of the Earth's bow shock: multipoint observations

Funds: 

Supported by STFC in-house research grant and by NSFC grants (D041003, 41431071)

More Information
    Author Bio:

    LIU Bing,E-mail:buaa bingliu@sina.com;DUNLOP M W,E-mail:malcolm.dunlop@stfc.ac.uk

  • 摘要: We analyze observations of three bow shock crossings which occurred during 2007, using upstream data from STEREO A/B, ACE and WIND, combined with multi-point THEMIS and Cluster data, and TC-1 data located near noon. During the crossing of 7 May 2007, we find that following a rapid reduction in solar wind ram pressure and subsequent pressure pulse seen by ACE and WIND upstream, the bow shock responds asymmetrically from dawn to dusk. Cluster data on the dawn-side suggest the bow shock is significantly flared and responds rapidly to the pulse arrival, while TC-1 at noon, and THEMIS on the dusk-side, are well matched to the model bow shock, but show a delayed response. The crossings observed on 21 May and 2 June show contrasting response matching the model boundary for northward Interplanetary Magnetic Field (IMF). The IMF and solar wind plasma data suggest that the bow shock crossing at dawn-dusk side and subsolar point were mainly caused by large and smaller scale features of the solar wind ram pressure rise rather than the influence of IMF.

     

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  • 刊出日期:  2017-03-15

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