摘要
利用冀鲁豫交界地区多期流动重力资料,研究了该区重力场在汶川8.0特大地震前后的动态变化,研究结果表明:在该强震孕震阶段,随着地震的临近,重力场在一定范围内出现了区域性的负值异常,最大值为43×10-8m s-2,震后整体恢复上升。
Gravity changes around the Wenchuan Ms8.0 strong earthquake are probed using the gravity data in many period of time from mobile gravimetric observation network which is located at junction area of Hebei, Shangdong and Henan province （Ji-Lu-Yu）. The results revealed that in the period of earthquke preparation in a definited area there was a negative gravity anomaly whose maximum value was 43×10^-8ms^-2, nearly before the earthquake occuring and then gravity should be restored up after the earthquke .
出处
《大地测量与地球动力学》
CSCD
北大核心
2009年第1期27-30,共4页
Journal of Geodesy and Geodynamics
基金
地震科学联合基金(A08086)
关键词
重力场变化
汶川8.0地震
冀鲁豫地区
重力资料
深部物质运移
gravity change
Wenchuan Ms8.0 strong earthquake
Ji-Lu-Yu area
gravity data
deep-seated materials movement
