地震地磁观测与研究2017，Vol.38Issue(4)：15-20,6.DOI:10.3969/j.issn.1003-3246.2017.04.003
2017年8月8日四川九寨沟M7.0地震震源深度测定
Focal depth determination of Jiuzhaigou M 7.0 earthquake on Aug.8,2017, Sichuan Province
摘要
Abstract
An M 7.0 earthquake occurred on Aug.8,2017 in Jiuzhaigou County,Sichuan Province,which was followed by a series of aftershocks.The earthquake struck on the Sichuan side of the Sichuan-Gansu provincial boundary.Domestic and foreign scientific research institutions have obtained different results for the focal depth of the main shock.In this paper,PTD method is used to determine the focal depth.The result is 13 km by using data of Sichuan Seismic Network and Sichuan 2015 velocity model.Meanwhile,another result for the hypocenter depth is 12 km by using data of Gansu Seismic Network and Gansu 2015 velocity model.The reliability of the PTD results is proved by the close station after the installation of the mobile seismic station.In addition,the focal depths of aftershocks above M 3.0 are also calculated.All the seismic phase data is from the catalog database of China Earthquake Networks Center.关键词
震源深度/地壳速度模型/PTD方法Key words
focal depth/crust velocity model/PTD method引用本文复制引用
宋秀青..2017年8月8日四川九寨沟M7.0地震震源深度测定[J].地震地磁观测与研究,2017,38(4):15-20,6.基金项目
上海市地震局科技专项(项目编号:2017专2) （项目编号:2017专2）
中国地震局监测司专项(项目编号:17110402) （项目编号:17110402）
