摘要
汶川地震的发生引发了新一轮对龙门山及邻区断裂特征研究的热潮.倾斜角总水平导数是近几年常用的一种高分辨率边界识别方法,欧拉反褶积法是一种自动估算场源体位置和深度的方法,本文联合以上两种方法对区域重、磁资料进行处理,根据处理结果在研究区内划分出14条断裂,并对断裂的位置、走向、深度等特征进行了详细的描述.本文的成果为研究区震后重建选址方面提供了基础性依据,且对汶川地震的研究有一定的推动作用.
The occurrence of Wenchuan earthquake caused a new upsurge of researching fault characteristics of the Longmen Shan and adjacent areas. Total horizontal derivate of tilt angle is a usually used boundary detection method in recent years with high-resolution, and the Euler deconvolution method is an automatic method for estimating the location and depth of the potential-field source body. In this paper, we combined these two approaches to invert regional gravity and magnetic data. According to the inversion results we got fourteen faults in the study area, and illuminated the characteristics of fault locations, trends, depths in detail based on the inversion results of gravity and magnetic anomalies. The research results of this paper provided a fundamental basis for reconstruction of the study area after the earthquake, and played an important role in promoting the research of the Wenchuan earthquake.
出处
《地球物理学进展》
CSCD
北大核心
2011年第3期916-921,共6页
Progress in Geophysics
基金
国家科技支撑计划项目"汶川地震断裂带科学钻探"(2008~2012)项目资助
关键词
四川盆地
倾斜角总水平导数
欧拉反褶积法
断裂
Sichuan Basin, Total horizontal derivate of tilt angle, Euler deconvolution, Fault
