测绘通报 ›› 2017, Vol. 0 ›› Issue (1): 30-34,57.doi: 10.13474/j.cnki.11-2246.2017.0007

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Analysis of the Impact of Prismatic Sub Block Motion from the 8 Magnitude Earthquake in Wenchuan Area

YUE Caiya1,2, DANG Yamin2, YANG Qiang2, HAN Xueli1,2   

  1. 1. Shandong University of Science and Technology, Qingdao 266590, China;
    2. Chinese Academy of Surveying and Mapping, Beijing 100830, China
  • Received:2016-03-16 Online:2017-01-25 Published:2017-02-06

Abstract: The crustal movement in the Sichuan Yunnan region is the most active around China, which is also the hot spot of the scholars' research. Based on the GNSS continuous observation data solution (time node for the Wenchuan earthquake) in 1998-2008 and 2008-2015, combined with the previous classification scheme of the Sichuan Yunnan region prismatic block,Euler vector of each block is calculated based on the Euler vector. In this region, grid interpolation is used to retrieve the characteristics of two periods of crustal movement, and to study the relative motion of adjacent blocks by selecting a point in the vicinity of the fault zone or the fault zone.The results showed that the Wenchuan earthquake did not cause the change of the whole movement characteristics, but the movement of some local blocks and the relative motion of the adjacent blocks.

Key words: Sichuan Yunnan region, Euler vector, grid interpolation, relative motion

CLC Number: