Vertical Crustal Movement before and after the Great Wenchuan Earthquake Obtained from GPS Observations in the Regional Network
详细信息
- 责任者：Gu Guohua (Institute of Earthquake Science ; CEA ; Beijing 100036 ; China) ; Wang Wuxing
- 刊名：Earthquake
- 出版年：2011
- 卷期：31(3)
- 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 地震预测 ; earthquake prediction ; 全球定位系统 ; Global Positioning System ; 龙门山断裂带 ; Longmenshan Fault Zone
- 页码：p.1-8
- 图表：4 illus., 13 refs.
- 分类号：0500
- issnNo：ISSN1000-3274
- isbnNo：CN11-1893/P
摘要
In this paper, the accuracy of vertical displacements obtained from GPS observations is briefly discussed. Ground subsidence, the major contamination in vertical displacements, particularly, large ground subsidence caused by ground water withdraw in large amount, is analyzed. The results show that the subsidence area near the epicenter, detected by GPS observations before the earthquake, and the locked segment of the Longmenshan Fault shown by vertical displacements were closely related with the occurrence of the Wenchuan earthquake.