【摘要】 收集了1978～2003年位于渤海湾盆地及其邻近地区(大体位于东经112°～122°,北纬34°～44°之间)所记录到的的总计10534个地震或人工爆破事件的Pn、Pg以及P波到时数据,运用GT5准则,从中挑选出相对精确和可信度较高,且具有代表性的的10个地震事件,使用MessyGA算法,分别反演了这10个地震事件所对应的一维地壳P波速度模型.反演的局部地壳模型与已知结果对应较好,基本反映了震中区的地壳速度结构特征.该方法原理简单,计算方便,可用于确定局部和区域的地壳速度模型.更多还原

【Abstract】 We collect arrival-time data of Pn, Pg and P phases of 10534 earthquakes or artificial explosions occurred in Bohai Bay Basin and its adjacent area, between 1978 and 2003. Using the criteria of GT5, we choose 10 representative events, all of which have relatively high accuracy and confidence, and then inverse 1-D crustal P-wave velocity models with Messy GA, by using various events. Our results, especially the local crustal models, are in good accordance with the known results of others, and reflect the principle characters of crustal velocity structure beneath each epicenter on the whole. The theory of our method is very simple, and it is robust to find the local and regional crustal velocity model.更多还原