基于Hyposat方法的辽宁地区地壳一维速度模型研究  

A One-Dimensional Crustal Velocity Model for Liaoning Based on the Hyposat Positioning Method

作　　者：王承伟[1] 王晓睿 李恩来[1] 王淑辉[1] 梁一婧[1] 

机构地区：[1]辽宁省地震局,辽宁沈阳110034 [2]大连地震台,辽宁大连116000

出　　处：《地震工程学报》2017年第A01期1-6,共6页China Earthquake Engineering Journal

摘　　要：合适的地壳速度模型可以帮助地震学家准确判断地震测定精度。目前辽宁台网使用的速度模型是利用华南地区天然地震和人工爆破资料获得的两层平均速度模型。对近年来发生在辽宁地区的较大地震震相进行了提取、拟合、折合走时等分析,使用Hyposat定位方法计算出更适合于辽宁地区地壳结构的一维速度模型。研究表明,新模型在地震定位中比华南模型的定位效果更好,其走时残差和震中差都要优于华南模型,更加符合辽宁地区地壳结构。A suitable crustal velocity model can help seismologists determine seismic accuracy. Atpresent,the speed model used in the Liaoning network is a two-layer, average velocity model ob-tained from data of natural earthquakes and artificial blasting in South China. However,for some networks outside of South China,the crustal velocity model is obviously different from the South China model. Therefore,it is necessary to study the velocity model that conforms to the crustal structure in this area. In this study, based on phase analysis of the strong earthquakes that oc-curred in Liaoning Province in recent years,a more suitable,one-dimensional velocity model for the crustal structure in Liaoning has been calculated using the Hyposat method. The results show that the new model is better than the South China model in seismic pepicentral differences are better than those of the South China model.

关 键 词：辽宁地区 速度模型 Hyposat定位方法 

分 类 号：P315.7[天文地球—地震学]