Study on dynamic change of gravity field in China continent

作者：Zhu Yi-Qing^*; Liang Wei-Feng; Zhan, F. Benjamin; Liu Fang; Xu Yun-Ma; Guo Shu-Song; Liu Lian

来源：Acta Geophysica Sinica, 2012, 55(3): 804-813.

DOI：10.6038/j.issn.0001-5733.2012.03.010

• China Continent
• Geodesy
• Gravity
• Tectonics
• Seismology

This paper reports preliminary results about gravity field changes in mainland China from 1998 to 2008 based on information derived from absolute and relative gravity observation data at stations of the Crustal Movement Observation Network of China (CMONOC). These results suggest that; (1) there existed significant inhomogeneity in the spatial-temporal distribution of gravity changes in China and partition phenomenon; (2) significant gravity changes appear to be concentrated in regions with active faults and associated with the preparation of large earthquakes; (3) the majority of large earthquakes (>= M(s)6. 8) in mainland China occurred in areas that exhibited significant differences of gravity changes of 90 X 10(-8)m . s(-2) or greater, and these earthquakes typically ruptured around the time when the trend of gravity change in the region showed signs of reversal.

• 单位
  中国地震局; 武汉大学