| 利用濮阳地震集中区丛集地震P波走时差观测地壳介质的微动态变化 |
| |
| 引用本文： | 李霞,周龙泉,张志慧,山长仑,李亚军.利用濮阳地震集中区丛集地震P波走时差观测地壳介质的微动态变化[J].大地测量与地球动力学,2012,32(Z1):45-48. |
| |
| 作者姓名： | 李霞 周龙泉 张志慧 山长仑 李亚军 |
| |
| 作者单位： | 1. 山东省地震局,济南,250014
2. 中国地震台网中心,北京,100045 |
| |
| 基金项目： | 2012年度国家科技支撑计划项目(2012BAK19B04);山东省地震局合同制项目(2011Y10) |
| |
| 摘 要： | 基于地震波及震相到时数据,经地震精定位及震中位置归一处理,给出了冀鲁豫交界地区地壳介质的微动态变化过程.结果显示,该区中等地震前部分台站记录丛集地震P波走时差滑动平均值出现中短期负异常,即地壳介质速度升高,显示出不同方位地壳介质承压状态存在差异.
|
| 关 键 词： | 丛集地震 濮阳地震集中区 地壳介质 P波走时差 射线追踪 |
MONITORING MICRO-DYNAMIC CHANGE OF CRUSTAL MEDIUM BY USING P-WAVE TRAVEL-TIME DIFFERENCE OF CLUSTERED EARTHQUAKE IN PUYANG AREA |
| |
| Li Xia
,
Zhou Longquan
,
Zhang Zhihui
,
Shan Changlun
,
Li Yajun.MONITORING MICRO-DYNAMIC CHANGE OF CRUSTAL MEDIUM BY USING P-WAVE TRAVEL-TIME DIFFERENCE OF CLUSTERED EARTHQUAKE IN PUYANG AREA[J].Journal of Geodesy and Geodynamics,2012,32(Z1):45-48. |
| |
| Authors: | Li Xia Zhou Longquan Zhang Zhihui Shan Changlun Li Yajun |
| |
| Affiliation: | 1) 1)Earthquake Administration of Shandong Province,Jinan 2500142)China Earthquake Networks Center,Beijing 100036 |
| |
| Abstract: | On the basis of seismic waveform and phase arrival time data,by accurately locating and normalizing the position of clustered earthquakes,the crustal medium micro-dynamic change in the placebonder on Ji-Lu-Yu 3 provinces were given.The results show that the moving averages of P-wave travel-time appears negalively anomalous in medium and short terms before moderate earthquakes,i.e.the travel-velocity of crustal media raised.It means that the artesian conditions of crustal medium in different directions can be different from each other. |
| |
| Keywords: | clustered earthquake Puyang earthquake concentrating area crustal medium P-wave travel-time difference ray tracing |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
