汶川8.0级地震前龙门山断裂带地倾斜面变化特征研究

英文篇名：RESEARCH ON SURFACE VARIATION CHARACTERISTICS OF GROUND TILT IN LONGMENSHAN FAULT ZONE BEFORE WENCHUAN Ms8.0 EARTHQUAKE
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：张创军 ; 邵辉成 ; 史春伟 ; 陈嘉选
英文作者：Zhang Chuangjun{1)} ; Shao Huicheng{2)} ; Shi Chunwei{1)} and Chen Jiaxuan{1)}1)Qianling Seismic station ; Earthquake Administration of Shanxi Province ; Xianyang 7133002)Earthquake Administration of Shanxi Province ; Xian 710068
中文关键词：汶川地震 ; 龙门山断裂带 ; 地倾斜 ; 面倾角 ; 面方位角
英文关键词：Wenchuan Ms8.0 earthquake ; Longmenshan fault zone ; crustal tilt ; surface inclination ; surface azimuth
出版日期：2011-06-15
机构：陕西省地震局乾陵地震台;陕西省地震局;
年：2011
期：S1
出版单位：大地测量与地球动力学

摘要

探讨汶川8.0级地震前龙门山断裂带区域地倾斜面的形变特征,分析表明震前区域地倾斜面在水平形变变化上呈现由龙门山断裂带两侧向中央挤压特征;垂直形变变化呈现龙门山断裂带西北侧的后山断裂持续抬升隆起,东南侧前山断裂的雅安等区域持续下沉特征;震源附近的汶川区域地倾斜面从2005年下半年至2006年出现了垂直和水平形变显著加速增大的趋势。
The deformation characteristic changes of the crustal tilt surface in Longmenshan fault zone before Wenchuan Ms8.0 earthquake is discussed.The analysis shows that before the earthquake in the horizontal deformation change tilt surface there appeared the compresional characteristics from the two sides to central part of the fault zone and in the vertical deformation change of the Houshan fault which is on the northwest side of the Longmenshan fault was continuously lifting and the Qianshan fault on the southeast side of the Longmenshan fault subsiding.The Wenchuan area near the seismic focus presented evidently accelerative and inccreasing of the vertical and horizontal deformation characteristics from late 2005 to 2006.

引文

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