|Table of Contents|

Analysis and Monitoring of Crustal Deformation in Wenchuan Earthquake(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2010年第02期
Page:
205-210
Research Field:
地球信息科学
Publishing date:

Info

Title:
Analysis and Monitoring of Crustal Deformation in Wenchuan Earthquake
Author(s):
BAI Gui-xia1;  CHENG Chuan-lu2;  GUO Chun-xi2;  WANG Xiao-rui2;  MA Xin-ying2
(1.Shaanxi Bureau of Surveying and Mapping, Xi'an 710054, Shaanxi, China; 2.Geodetic DataProcessing Center, State Bureau of Surveying and Mapping, Xi'an 710054, Shaanxi, China)
Keywords:
Longmen Mountain fault zone;  Wenchuan Earthquake;  crustal deformation monitoring;  reference frame
PACS:
P227
DOI:
-
Abstract:
Analysis and monitoring of crustal deformation are of significance to study the influence of Wenchuan Earthquake to the topographical change of seismical region and Qinghai-Tibet Plate. Observation data of crustal deformation before and after Wenchuan Earthquake in related monitoring stations were collected. Based on uniform model, the data of monitoring of crustal deformation before and after Wenchuan Earthquake were calculated to ITRF2005 reference frame and 2008.363 epochs(May 12, 2008). The result showed that the geodetic datum of epicenter area was damaged seriously; the deformation of monitoring stations had been deformed and dislocated with horizontal displacement of 243 cm, settlement of 68 cm and uplift amount of 36 cm. In addition, deformation monitoring of Wenchuan Earthquake was discussed. The result showed that the west block of “Yingxiuzhen-Beichuan-Qingchuan” fault zone had moved to the southeast and had taken on an uplift trend; the east block had moved to the northwest and had taken on a downward trend; the north block had moved to the northeast, the south block had moved to the southwest, both sides of blocks formed a clear extruded shape. The results laid a solid foundation for revealing the mechanism of Wenchuan Earthquake and the movement of Longmen Mountain fault zone.

References:

[1] 彭建兵,马润勇,范 文,等.汶川大震的科学思考[J].地球科学与环境学报,2009,31(1):1-29.
[2] 安其美,丁立丰,王海忠,等.龙门山断裂带的性质与活动性研究[J].大地测量与地球动力学,2004,24(2):115-119.
[3] 焦 青,杨选辉,许丽卿,等.汶川8.0级地震前后龙门山断裂活动特征浅析[J].大地测量与地球动力学,2008,28(4):7-11.
[4] 刘健新,赵国辉.“5·12”汶川地震典型桥梁震害分析[J].建筑科学与工程学报,2009,26(2):92-97.
[5] 朱元祥,李航飞,孙东晓.“5·12”汶川地震后陕西宝鸡陈仓区建筑物震害调查与分析[J].建筑科学与工程学报,2009,26(2):116-120.
[6] 郭婷婷,徐锡伟,于贵华,等.川西地区农村民居建筑物震害调查与分析[J].建筑科学与工程学报,2009,26(3):59-64.
[7] 程传录,王文利,郭春喜,等.2000国家大地坐标系下三角网平差技术研究[J].地球科学与环境学报,2009,31(4):432-436.
[8] 郭春喜,王 斌,程传录,等.珠穆朗玛峰高程测量[J].地球科学与环境学报,2009,31(1):106-110.
[9] 陈俊勇,杨元喜,王 敏,等.2000国家大地控制网的构建和它的技术进步[J].测绘学报,2007,36(1):1-8.
[10] 党亚民,陈俊勇.国际大地测量参考框架技术进展[J].测绘学报,2008,33(1):33-36.
[11] 党亚民.GPS和地球动力学进展[J].测绘科学,2004,29(2):77-79.
[12] 程传录,郭春喜,路 军,等.基于跟踪站模式下的GPS 技术应用[J].测绘科学,2003,28(3):57-58.
[13] 陈俊勇,郭春喜,程传录,等.利用GPS技术测定珠峰高程变化及其北坡地壳形变的初步分析[J].武汉大学学报:信息科学版,2007,32(1):1-5.
[14] 程传录,郭春喜,王小瑞.关于国家高精度GPS(B级)网成果的使用问题[J].测绘科学,2005,30(5):31-32.

Memo

Memo:
-
Last Update: 2010-06-20