海城地震地区地壳三维结构特征  

FEATURES OF THE THREE DIMENSIONAL CRUSTAL STRUCTURE OF THE HAICHENG SEISMIC AREA

作　　者：李荣安[1] 徐平[1] 焦明若[1] 王小风[2] 

机构地区：[1]辽宁省地震局 [2]地质矿产部地质力学研究所

出　　处：《地震地质》1997年第1期9-13,共5页Seismology and Geology

基　　金：国家自然科学基金

摘　　要：用一种新的地震波速图象研究方法和计算程序，处理了辽宁省地震台网观测资料，反演得到海城地震地区及其周围地壳三维速度结构，再次证实海城震区东西两侧的地壳结构有明显差异。The observational data from the seismic station network of Liaoning province were processed by using a new method of seismic velocity imaging and computer program. It gives new results of the three dimensional crustal structure of the Haicheng seismic area and neighboring regions. The analyses confirm again that the crustal structure on the borth sides of the Haicheng seismic area is rather different. The focuses of Haicheng earthquakes are located above a NWW trending low velocity body in the crust.

关 键 词：地震成象 地壳结构 海城地震区 地震 震源 

分 类 号：P315.2[天文地球—地震学] P315.63[天文地球—固体地球物理学]