摘要
三叉口地区在1989年巴塘6.7级地震和2001年雅江6.0级地震前的重力场变化显示该地区的地应力呈聚集状态,能量的释放较少;在震后重力场变化显示该地区的地应力呈释放状态,有较大的能量释放。
The gravity field changes before both the M6.7 Batang Earthquake in 1989 and the M6.0 Yajiang Earthquake in 2001 show an accumlated stress status and the stress energy released from seismic events is less during this period.But the energy released from seismic events is big after the M6.7 Batang Earthquake in 1989 and the M6.0 Yajiang Earthquake in 2001.
引文
[1]龙思胜,赵珠.鲜水河、龙门山和安宁河三大断裂交汇地区震源应力场特征[J].地震学报,2000,(5).
[2]地震重力测量规范[M].北京:地震出版社,1997.
[3]黄胜睦,董瑞英.川滇藏邻区巴塘—丽江地震块体强震活动特征的初步探讨[J].地震研究,1999,22(1).