论地层吸收衰减及地震仪器记录性能

摘要

如果希望能够测定深度1500米以下的或者将近一米的地表，这就需要地震测量仪器具备记录频率高于1000赫兹的信号，瞬时动态范围需要在120分贝左右。但是不管是传统的集中式数字地震仪，还是如今的二十四位遥测地震仪，都没有具备这一指标需求。本文对地层吸收衰减理论进行分析，并研究了地震仪的瞬时动态范围和仪器记录的最大频率。%If you want to be able to measure the depth of 1500 meters below,or nearly a metre of surface, which requires the earthquake measuring instrument with signal recording frequencies higher than 1000 Hz,instantaneous dynamic range at about 120 db.But whether it is the traditional centralized digital seismograph,and now twenty-four telemetry seismic instrument,do not have this requirement.This paper analyzes on the attenuation of formation absorption theory,the maximum frequency and the instantaneous dynamic range of seismic instrument and equipment records