Coseismic and Preseismic Displacements Observed by Fiducial Stations in China Caused by the 2011 Japan M9.0 Earthquake

详细信息   

• 责任者：Zhao Guoqiang (Institute of Earthquake Science ; CEA ; Beijing 100036 ; China) ; Li Peng
• 刊名：Earthquake
• 出版年：2012
• 卷期：32(2)
• 关键词：大震 ; great earthquakes ; 地震前兆 ; precursor ; 全球定位系统 ; Global Positioning System ; 日本 ; Japan
• 页码：p.129-134
• 图表：3 illus., 1 table, 12 refs.
• 分类号：0500
• issnNo：ISSN1000-3274
• isbnNo：CN11-1893/P

摘要

The authors calculated coseismic deformations at fiducial stations in China caused by the 2011 M9.0 Japan earthquake. The results show that there are obvious coseismic displacements at stations located in the east, especially Northeast China, and the coseismic displacements are in directly proportional to the epicentral distance. The coseismic displacement at the SUIY station is the largest, 3.3 cm. A phenomenon is found in the time series that the speed of horizontal movements at the fiducial stations with obvious coseismic displacement decreased before the earthquake, and this phenomenon might be one of the earthquake precursors.