摘要
Based on continuous GPS observations within China as well as global GPS tracking network, a calculation has been made of far-field coseismic displacements associated with the December, 2004 (Mw = 9.3) and March, 2005 (Mw = 8.7) earthquakes. The far-field coseismic displacements are associated with the 2004 shock range more than 6000―7000 km in both north-south and east-west dimensions, and depict an undulated wave pattern of contraction and extension. The coseismic displacements associ-ated with the 2005 event, however, are distributed near the epicentral region, and the event itself may be an aftershock of the 2004 earthquake.
Based on continuous GPS observations within China as well as global GPS tracking network, a calculation has been made of far-field coseismic displacements associated with the December, 2004 （Mw = 9.3） and March, 2005 （Mw = 8.7） earthquakes. The far-field coseismic displacements are associated with the 2004 shock range more than 6000--7000 km in both north-south and east-west dimensions, and depict an undulated wave pattern of contraction and extension. The coseismic displacements associated with the 2005 event, however, are distributed near the epicentral region, and the event itself may be an affershock of the 2004 earthquake.
关键词
远场同震位移
板块边界
耦合
逆掩断裂作用
GPS
far-field coseismic displacement, coupling of plate boundary, thrust faulting earthquake.
