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Ionospheric and geomagnetic disturbances caused by the 2008 Wenchuan earthquake: A revisit
Zhao, Biqiang1; Hao, Yongqiang2
2015-07-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
Volume120Issue:7Pages:5758-5777
SubtypeArticle
AbstractPrevious works have shown that coseismic ionospheric disturbances (CIDs) after the tsunamigenic 2011 Tohoku earthquake (Tohoku EQ, M(w)9.1) covered a vast area and were observed thousands of kilometers away from the epicenter. For the purpose of making a comprehensive comparison between powerful oceanic and inland EQs, we conduct a retrospective investigation of CIDs and geomagnetic responses to the 2008 Wenchuan EQ (M(w)7.9) using a combination of techniques, total electron content, HF Doppler, and ground magnetometer. It is the very first study to present CIDs recorded by different techniques at co-located sites and profiled with regard to changes of both ionospheric plasma and current (geomagnetic field) simultaneously. The integrated observation also shows that (1) in the Wenchuan case, most of the ionospheric and geomagnetic disturbances were observed within 1000km distance which is far less than the Tohoku case; (2) two groups of CIDs were found with maximum amplitudes in the direction of azimuth 150 degrees and 135 degrees, respectively; and (3) the geomagnetic changes were only registered by three magnetometers located to the east and southeast of the epicenter. All the facts indicate that the main directional lobe of Wenchuan EQ energy propagation is to southeast and perpendicular to the direction of the fault rupture, but this kind of directivity is not that distinct in the Tohoku case. We suggest that the different fault slip (inland or submarine) affecting the way of couplings of lithosphere with atmosphere may contribute to the discrepancies between the two events.
Department地磁与空间物理研究室
Keywordcoseismic ionospheric effects atmosphere-ionosphere coupling ionospheric disturbances
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/2015JA021035
Funding OrganizationNational Basic Research Program of China(2012CB957801 ; National Basic Research Program of China(2012CB957801 ; NSFC(41274155 ; NSFC(41274155 ; ISTCP(2014DFR21280) ; ISTCP(2014DFR21280) ; Young Talent Program of Chinese Academy of Science ; Young Talent Program of Chinese Academy of Science ; 2011CB811405) ; 2011CB811405) ; 41174138 ; 41174138 ; 41131066 ; 41131066 ; 41304126) ; 41304126) ; National Basic Research Program of China(2012CB957801 ; National Basic Research Program of China(2012CB957801 ; NSFC(41274155 ; NSFC(41274155 ; ISTCP(2014DFR21280) ; ISTCP(2014DFR21280) ; Young Talent Program of Chinese Academy of Science ; Young Talent Program of Chinese Academy of Science ; 2011CB811405) ; 2011CB811405) ; 41174138 ; 41174138 ; 41131066 ; 41131066 ; 41304126) ; 41304126)
WOS KeywordGRAVITY-WAVES ; TOHOKU EARTHQUAKE ; GPS DETECTION ; ALASKAN EARTHQUAKE ; SUMATRA EARTHQUAKE ; OKI EARTHQUAKE ; PACIFIC COAST ; PROPAGATION ; TSUNAMI ; DEPENDENCE
Indexed BySCI
Language英语
Funding OrganizationNational Basic Research Program of China(2012CB957801 ; National Basic Research Program of China(2012CB957801 ; NSFC(41274155 ; NSFC(41274155 ; ISTCP(2014DFR21280) ; ISTCP(2014DFR21280) ; Young Talent Program of Chinese Academy of Science ; Young Talent Program of Chinese Academy of Science ; 2011CB811405) ; 2011CB811405) ; 41174138 ; 41174138 ; 41131066 ; 41131066 ; 41304126) ; 41304126) ; National Basic Research Program of China(2012CB957801 ; National Basic Research Program of China(2012CB957801 ; NSFC(41274155 ; NSFC(41274155 ; ISTCP(2014DFR21280) ; ISTCP(2014DFR21280) ; Young Talent Program of Chinese Academy of Science ; Young Talent Program of Chinese Academy of Science ; 2011CB811405) ; 2011CB811405) ; 41174138 ; 41174138 ; 41131066 ; 41131066 ; 41304126) ; 41304126)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000360381400038
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/7882
Collection地磁与空间物理研究室
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Peking Univ, Dept Geophys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Biqiang,Hao, Yongqiang. Ionospheric and geomagnetic disturbances caused by the 2008 Wenchuan earthquake: A revisit[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(7):5758-5777.
APA Zhao, Biqiang,&Hao, Yongqiang.(2015).Ionospheric and geomagnetic disturbances caused by the 2008 Wenchuan earthquake: A revisit.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(7),5758-5777.
MLA Zhao, Biqiang,et al."Ionospheric and geomagnetic disturbances caused by the 2008 Wenchuan earthquake: A revisit".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.7(2015):5758-5777.
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