基于频率衰减补偿的微地震定位方法

摘要

This paper analyzes the relation between frequency attenuation of source wavelet and its propagation distance.Based on seismic wave frequency attenuation compensation,we propose a new micro-seismic location method.This method,which can avoid signal recognition and the pick-up of arrival time,indirectly obtains traveling time difference of the micro-seismic events from adjacent traces to achieve the location of micro-seismic events.We illustrate the basic principle and implementation approach in this paper and demonstrate the method is reasonable and effective through theoretical calculation and error analysis.%本文分析了不同频率的震源子波在传播过程中频率衰减与传播距离的关系,提出了地震波频率衰减补偿的微地震定位方法.该方法通过对地震波频率衰减的补偿,间接获取微地震事件的道间时差,避免了微地震事件的信号识别与走时拾取,实现了对微地震事件的定位.本文提出了方法的基本原理和计算方法,并通过理论计算和误差分析表明该方法是合理的和有效的.