[1]YANG Guo-hua,HAN Yue-ping,YANG Bo.Discussion about the Evolvement Characteristics and the Mechanism of the Crustal Horizontal Movement and Deformation Field in Sichuan-Yunnan Area[J].Journal of Seismological Research,2009,32(03):275-282.
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Discussion about the Evolvement Characteristics and the Mechanism of the Crustal Horizontal Movement and Deformation Field in Sichuan-Yunnan Area
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
32
Number of periods:
2009 03
Page number:
275-282
Column:
Public date:
2009-03-23
- Title:
- Discussion about the Evolvement Characteristics and the Mechanism of the Crustal Horizontal Movement and Deformation Field in Sichuan-Yunnan Area
- Keywords:
- Sichuan-Yunnan area; crustal horizontal activity; Indonesia earthquake; evolvement characteristics; mechanism analysis
- CLC:
- P542+.1
- DOI:
- -
- Abstract:
- Sichuan-Yunnan is the most prominent area in China for its ctrustal movement and deformation,so it becomes an indispensable aspect to realize its basic characteristic and dynamic change among a lot of research subjects in geology.Through processing and analyzing almost all the GPS data in this area in recent years,we obtain the background movement field relative to the data with no rotation based on 3 time period data from 1999 to 2004,and make it as the basic restriction to get respectively the departure displacement field of different period by using the data in 2005 and in 2007.Integrating the data in movement field and displacement field and using continuous strain model,we analyze the main characteristics of horizontal deformation field,and acquire results as follows:The main deformation region in Sichuan-Yunnan area is located in the east boundary of Sichuan-Yunnan Rhombic Block.The Block and the west region to it obviously revolved clockwise.The Indonesia earthquake on 26th December,2004 coseismicly affected Sichuan-Yunnan Area,and resulted in a departure displacement in SSW direction in the southern part and in NW direction in the northern part of Sichuan-Yunnan area.The Indonesia earthquake probably touched off the Wenchuan earthquake.
- References:
- -
- Similar References:
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Last Update:
2009-03-23