地震学报（英文版）2000，Vol.13Issue(3)：265-272,8.
Characteristics of coda Q-value in the mid-northern part of Ningxia
Characteristics of coda Q-value in the mid-northern part of Ningxia
摘要
Abstract
On the basis of previous studies, this paper, in studying the coda Q-value of near shocks, has proposed using the sampling depth to describe the effect of lapse time on the Q-value, and has investigated the dependence of coda wave of earthquakes on frequency and sampling depth. Analysis of digital seismograms recorded by the Yinchuan Telemetric Seismic Network, Ningxia, shows that not only the coda wave Q-value of shocks is strongly dependent on frequency but also its dependence on sampling depth cannot be neglected. In the commonly used formula that describes the dependence characteristics of coda Q-value of earthquakes, Q = Q0 f n, the parameter Q0 rises obviously while n drops when the sampling depth increases, and their changes can be fitted by linear relations. This paper has explained such a characteristic. Whether this characteristic exists universally needs to be verified by more study results because the genetic mechanism of coda wave of earthquakes is more complex.关键词
coda Q-value/digital record/frequency band/lapse time/sampling depthKey words
coda Q-value/digital record/frequency band/lapse time/sampling depth分类
天文与地球科学引用本文复制引用
..Characteristics of coda Q-value in the mid-northern part of Ningxia[J].地震学报（英文版）,2000,13(3):265-272,8.基金项目
Scientific and Technologcal Commission of Ningxia Autonomous Region. （）
