地震地磁观测与研究
地震地磁觀測與研究
지진지자관측여연구
Seismological and Geomagnetic Observation and Research
2015年
4期
14-18
,共5页
詹小艳%薛莹莹%江昊琳%王恒知%王俊%朱元清
詹小豔%薛瑩瑩%江昊琳%王恆知%王俊%硃元清
첨소염%설형형%강호림%왕항지%왕준%주원청
重定位%网格搜索%序列地震%视速度
重定位%網格搜索%序列地震%視速度
중정위%망격수색%서렬지진%시속도
relocation%grid search%sequence of earthquakes%apparent velocity
截至2014年3月18日00时,新疆地震台网共记录于田MS 7.3地震M≥3余震57次,2—3级余震147次.主震位置较为精确,可以采用基于初至波视速度的主事件定位技术,对余震序列进行重新定位.通过对震源区附近进行网格搜索,对序列地震中具有6个以上P波初至的M≥ 2事件重新定位,获得182个高精度结果,为研究此次地震的发震构造提供参考.
截至2014年3月18日00時,新疆地震檯網共記錄于田MS 7.3地震M≥3餘震57次,2—3級餘震147次.主震位置較為精確,可以採用基于初至波視速度的主事件定位技術,對餘震序列進行重新定位.通過對震源區附近進行網格搜索,對序列地震中具有6箇以上P波初至的M≥ 2事件重新定位,穫得182箇高精度結果,為研究此次地震的髮震構造提供參攷.
절지2014년3월18일00시,신강지진태망공기록우전MS 7.3지진M≥3여진57차,2—3급여진147차.주진위치교위정학,가이채용기우초지파시속도적주사건정위기술,대여진서렬진행중신정위.통과대진원구부근진행망격수색,대서렬지진중구유6개이상P파초지적M≥ 2사건중신정위,획득182개고정도결과,위연구차차지진적발진구조제공삼고.
As of March 18, 2014, Xinjiang Seismic Network recorded the aftershocks of magnitude 3 or more in the Yutian MS 7.3 earthquake were 57 times, the aftershocks of magnitude 2 to 3 were 147 times. Because the accurate position of main shock has obtained, so we can use the main event of primary wave velocity based on positioning technology, to reorientation of the aftershock sequence. In this article, with the grid search method in the focal region, the sequence of earthquake M 2 or more and more than 6 initial P wave first arrivals are repositioned. The 182 results with high accuracy are obtained. The results can provide a reference for the study of seismogenic tectonics of the earthquake.