パソコンによる波形のモニターおよび光ディスクヘの連続波形収録システム

Abstract

A new continous observation system of seismic wave has been developed. This systemproduces the digital data base of waveforms using a personal computer (16 bit) and an opticaldisk (800 Mbyte), in stead of the usual pen-writing system. Analogue waveforms from 7stations are digitized into 8 bit data with a sampling frequency of 61 Hz. These data arewritten in an optical disk every 15 minutes with some informations in the header. This kindof recording can be continued during 10 days without changing the optical disk. Waveformsare displayed on a screen for the purpose of real-time monitoring.