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Gravity variation of western Sichuan and Wenchuan earthquake

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Authors:Zhu Yiqing; Su Qin; Liang Weifeng; Liu Fang
Author Affiliations:Primary:
China Earthquake Administration, Second Monitoring and Application Center, Xi'an, China
Other:
Earthquake Administration of Sichuan Province, China
Volume Title:Dadi Celiang yu Diqiu Dongli Xue Journal of Geodesy and Geodynamics
Source:Dadi Celiang yu Diqiu Dongli Xue = Journal of Geodesy and Geodynamics, 30(2), p.1-5. Publisher: Gai Kan Bianjibu, Wuhan, China. ISSN: 1671-5942
Publication Date:2010
Note:In Chinese with English summary. 10 refs.; illus.
Summary:On the basis of mobile gravity observation data from 1998 to 2008 in western Sichuan, spatial dynamic variation results of regional gravity field are obtained, the relations between the gravity variation features and Wenchuan Ms8.0 earthquake are systematically analysised. The results show: 1)gravity change is closely related to active fault tectonics, gravity measurement can reflect material migration accompanying active fault and crustal tectonic activity well. 2)The regional gravity variations in a wide range appeared during Wenchuan earthquake. The dynamic patterns of gravity field mirrored the evolution process of gravity field: quasi-homogeneous state-non-homogeneous state-earthquake occurence.
Subjects:Active faults; Annual variations; Crust; Earthquake prediction; Earthquakes; Faults; Gravity field; Movement; Neotectonics; Seismotectonics; Tectonics; Wenchuan earthquake 2008; Asia; China; Far East; Sichuan China; Wenchuan China
Coordinates:N311323 N311323 E1031948 E1031948
Record ID:807084-1
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute.
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