摘要
用球体位错理论计算了三峡坝区和北京地区由汶川地震（Ms8．0）产生的同震位移、应变、重力和大地水准面变化。对比2004年苏门答腊地震，汶川地震在三峡坝区产生的位移约为前者的一半，应变为前者的2～3倍；在北京地区产生的形变总体比前者小1～2个量级。
The co-seismic displacements, strains, geoid and gravity changes caused by the Wenchuan Ms8.0 earthquake in Three Gorges and Beijing areas were calculated respectively. Compared with that caused by the Surmatra earthquake in 2004, in Three Gorges area the co-seismic displacements are about a half but the strains are about 2 -3 times. In Beijing area the deformations are smaller than those of the 2004 Sumatra earthquake by 1 -2 orders, totally. Thus, the possibility of strong induced earthquake is low in Three Gorges area, and is zero in Beijing area.
出处
《大地测量与地球动力学》
CSCD
北大核心
2008年第3期132-135,共4页
Journal of Geodesy and Geodynamics
关键词
汶川地震
位错理论
位移
应变
重力变化
the Wenchuan earthquake
dislocation theory
displacement
strain
gravity change
