模拟记录地震图的数字化实现

摘要

This paper introduces SeisDig software and Matlab software to realize the digitization of simulated seismogram.The realization of the process is mainly three steps : scanning seismic simula-tion drawings, processing graphs after the graphics scanning and digitizing the graphs by SeisDig software.The main object of the digitalization is to record the waveform data of large earthquake e-vents during the recording period.After digitization the seismic waveforms were restored to a high degree.This digital method has been applied to seismogram No.660 (DK-1) of Chengdu Seismolog-ical Station in 2002, and has achieved good results.This is of great significance to the preservation of analog seismic data , and it is also convenient for comparative analysis of historical seismic events in the future earthquake research.%通过SeisDig软件与Matlab软件的结合,实现了对模拟记录地震图的数字化.实现的过程主要分3个步骤:扫描地震模拟图纸、图纸扫描后的图形处理、SeisDig软件对图纸的数字化.数字化的对象是模拟记录时期记录了重大地震事件的波形资料.经过数字化后的地震波形还原程度高,效果明显.此数字化方法在成都地震台2002年编号660号地震图(DK-1)进行了应用,取得了良好的效果.这对于模拟记录地震资料的保存意义重大,为今后地震研究时引用历史地震资料提供了便利.