A large number of seismic records are discovered for the first time in the historical materials about Wudalianchi volcanic group eruption in 1720~1721, which pr
Mechanism of the June 4, 2000 southern Sumatra, Indonesia, earthquake (MS=8.0) are estimated from teleseismic body waves recorded by long period seismograph stations of the global seismic network. Thi
A method is proposed to estimate average tectonic ambient shear stress value for a region. Thus the average stress values of 19 regions in western USA, and 43 regions (each region is 1010) in Chinese