大地测量与地球动力学2011，Vol.31Issue(5)：26-29,4.
汶川地震震前龙门山以西地壳垂直隆升机理分析
MECHANISM ANALYSIS OF VERTICAL UPLIFT OF CRUST IN THE WEST OF LONGMENSHAN BEFORE WENCHUAN Ms8.0 EARTHQUAKE
摘要
Abstract
The mechanism of the vertical uplift of crust in the west of Longmenshan before Wenchuan Ms8. 0 earthquake has been debated through constructing the 2-D FEM model for the profile across Longmenshan fault, which is based on the velocity field that had calculated from the GPS observations and the result of seismic tomography obtained by Wu Jiangping et al. In addition, the effect of crustal inhomogeneity on the vertical uplift has been discussed as well. We concluded that the existence of the low velocity anomaly in the low cust below the front of Longmenshan fault play a key role, and vertical uplift is likely caused by both the curst shorten of the westen Longmenshan and the differential uplift between Chuanxi pletau and Sichuan basin.关键词
地壳隆升/低速体/黏弹性有限元/GPS速度/川西高原Key words
crust uplift/low velocity body/viscoelastic Finite Element Method (FEM) :GPS velocity/Chuanxi plateau分类
天文与地球科学引用本文复制引用
蒋锋云,王庆良,朱良玉,张晓亮,王双绪..汶川地震震前龙门山以西地壳垂直隆升机理分析[J].大地测量与地球动力学,2011,31(5):26-29,4.基金项目
中国地震局监测预报司“南北地震带北段大震危险性强化跟踪研究” （）
