地震地球化学観測のためのパーソナルコンピューターを用いた温泉ガス自動観測システムの開発

概要

論文の詳細を見る
Mineral spring gas compositions at several sites in central Japan have been monitored with gas chromatography for more than ten years in order to find pre-seismic anomalies. These measurements proved that a gas chromatograph is the most suit able apparatus for the in situ observation because it is durable and easily handled. In this study, a computer-based system for this observation has been developed. This system includes several instruments such as a gas inlet apparatus, a digital integrator and meteorological sensors. They are directly controlled by a personal computer which has enough expansion capacity and compatibility with our laboratory's one. The analytical results of gas compositions and the meteorological data are recorded on floppy disks and transmitted to our laboratory. A simple BASIC program executes these many functions of the computer, and it can be easily drawn up and revised if necessary. The data at a site showed that atmospheric pressure and temperature affect the result of gas analysis, but calculation of concentration ratio between each component in sample gas makes to correct the meteorological effect possible. In view of cost and reliability, this monitoring system is applicable widely for continuous on-site measurements in seismo-geochemistry.
日本地球化学会の論文
1991-03-20