摘要
基于宽频带倾斜仪数据,利用震源扫描算法(SSA)对地震进行定位,结果表明:在3个台站的情况下,对于网外地震,速度取均匀球壳模型,其定位精度随地震距台网距离增加而降低,在地震距最近台站为837 km时,经向误差为-1.11°,纬向误差为2.73°。同时,发现2008年12月—2009年4月期间黄梅台、宁陕台的宽频带倾斜仪时间系统可能存在故障。
On the basis of the broadband tiltmeter data, the rithm （SSA）. The results show that under the condition of three earthquakes are located with source-scanning algo- seismic stations, for outside network earthquakes, with uniform spherical shell model, the location precision decreased with the increasing distance from the network, and in the nearest station is 878 km, the longitude error is - 1. 11° and the latitude error is 2.73°. At the same time, we found that there may be problems in the time system of Huangmei station and Ningshan station in Decem- ber 2008 to April 2009.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第A02期1-4,34,共5页
Journal of Geodesy and Geodynamics
基金
中国地震局地震研究所所长基金(IS201116020)
关键词
宽频带
倾斜仪
地震定位
定位精度
震源扫描算法(SSA)
broadband
tihmeter
earthquake location
positioning accuracy
Source-Scanning Algorithm （SSA）
