冀北地区震相到时数据提取

A synthetically practice of picking of the arrival times in the north of Hebei Province

中国地震台网中心提供的区域震相到时多用于地震定位,到时数据有限。为提取更多可用到时数据,选取2001年10月—2002年12月首都圈107个数字化地震台记录的3 018个区域地震波形资料,采用中国地震局提供的波形处理软件ISDP,拾取22 547个Pg波和22 547个Sg波到时数据,为获得研究区高分辨地震成像结果和精度定位提供基础资料。

The arrival time data of regional seismic phases offered by Earthquake Network Center of Earthquake Administration of Beijing Municipality are often used to locate earthquakes efficiently. However, the center only can offer a limited number of arrival time data for users. We picked arrival time data available as many as possible from seismic wave-forms of 3 018 events recorded by the 107 seismic stations from October 2001 to December 2002, and finally we extracted 22 547 Pg and 22 547 Sg wave arrivals by using the software ISDP provided by China Earthquake Administration. This work is of great significance for offering fundamental data to gain a high-resolution seismic image under the region and to locate earthquakes accurately.