A multi-event and multi-station inverse method is presented in the paper to simultaneously estimate the seismic moments (Mo)and source comer frequencies (fc) of several Jiashi (Xinjiang, China) earthquakes, as well as the apparent Lg Q models for the paths from Jiashi to eight seismic stations (WMQ, AAK, TLG~ MAKZ, KUR, VOS, ZRN and CHK) in Central Asia. The resultant seismic moments correlate well with the M0 values obtained by Harvard University using the centroid moment tensor (CMT) inversion and the surface-wave magnitudes as well. After the correction by a typical value of average radiation coefficient for regional SV waves, the M0 values from Lg spectral inversion are still close to the corresponding values obtained from CMT inversion. The obtained apparent QoLg values (Lg Q at 1 Hz) are consistent with the tectonic features of corresponding propagation paths. The QoLg values are 351+87, 349+86 and 300i-_27 for the paths from Jiashi to AAK, TLG and MAKZ, respectively. They are smaller than QoLg values for the paths to KUR, VOS, ZRN and CHK, which are 553+72, 569&_58, 550+_57 and 603+65, respectively. These results agree with the condition that the paths to AAK, TLG and MAKZ mainly propagate through the mountainous Tianshan area where relatively strong seismic activities and large variations of topography are exhibited, while the paths to KUR, VOS, ZRN and CHK mainly propagate through the stable area of Kazak platform. The QoLg value for the path to WMQ is 462+56. This is also in agreement with the condition that the path to WMQ is basically along the border area between Tianshan Mountain and Tarim Basin, and along this path the variations of topography and crustal thickness are moderate in comparison with that along the path to MAKZ.
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