TY  - JOUR
PY  - 2005//
TI  - Characteristics of Foreshock and Its Identification
JO  - Acta seismologica sinica. English edition
A1  - Wang, Li-Yu
A1  - Chen, Peter Y.
A1  - Wu, Zheng-Lai
A1  - Bai, TX
SP  - 180
EP  - 188
VL  - 18
IS  - 2
N2  - In the paper, we analyze 117 moderate-strong earthquakes occurred in Chinese mainland (Msub-s greater than or equal 5.5 in the east and M sub-s greater than or equal 6.0 in the west) since 1970, among them, 11 earthquakes (about 9%) have direct foreshocks and 63 earthquakes (about 51%) have generalized foreshocks. The predominant time interval between foreshock and main earthquake is no more than 30 days with a spatial distance less than 50 km and a magnitude difference over 1. From the digital seismic data in Liaoning Province, we know that direct foreshock had an obvious shear-stress background before the M sub-s=5.6 and M sub-s=5.1 Xiuyan earthquakes occurred on Nov. 29, 1999 and Jan.15, 2000.     <p>Language: en</p>
LA  - en
SN  - 1000-9116
UR  - http://dx.doi.org/
ID  - ref1
ER  -