中国科学D辑(英文版)
中國科學D輯(英文版)
중국과학D집(영문판)
SCIENCE IN CHINA（SCIENTIA SINICA）
2003年
6期
529-539
,共11页
丛连理%胡家富%傅竹武%温一波%康国发%吴小平
叢連理%鬍傢富%傅竹武%溫一波%康國髮%吳小平
총련리%호가부%부죽무%온일파%강국발%오소평
Chinese continent%Lg coda%Q%stack spectral ratio method%back-projection technique
785 traces of vertical components from shallow earthquakes recorded by 10 CDSN (Chinese Digital Seismographic Network) stations and 5 GSN (Global Seismographic Network) stations were collected to study the attenuation characteristics of Lg coda in the Chinese continent and its adjacent regions. The records were processed first using the stack spectral ratio method to obtain the average values of Q0 (Q at 1Hz) and η, the frequency dependence, of Lg coda in the ellipses corresponding to the paths. The back-projection technique was then employed to obtain the tomographic maps of Q0 and η values, and the distribution of their errors. Results indicate that in the studied area Q0 varies between 200 and 500. The lowest value of Q0 exists in the Yunnan-Tibetan region, while the highest value of Q0 occurs in the southern edge of Siberian platform.η varies between 0.3 and 0.8. For most part of the studied area η varies inversely with Q0.
