Geophysical Data Collection Using an Interactive Personal Computer System (Part 1) : Experimental Monitoring of Suwanosejima Volcano

DOI Web Site 3 Citations
  • IGUCHI Masato
    Sakurajima Volcanological Observatory, Disaster Prevention Research Institute, Kyoto University

Bibliographic Information

Other Title
  • パソコンを利用した遠隔火山観測システム
  • パソコンを利用した遠隔火山観測システム〔英文〕
  • パソコン オ リヨウシタ エンカク カザン カンソク システム エイブン

Search this article

Abstract

A computer-communication system has been developed in order to collect geophysical data from remote volcanoes via a public telephone network. The system is composed of a host personal computer at an observatory and several personal computers as terminals at remote stations. Each terminal acquires seismic, infrasonic, ground deformation or other pertinent geophysical data. Seismic and infrasonic events are recorded at a sampling rate of 100 Hz by a triggering algorithm. The absolute value of amplitude of seismic waves is averaged over one minute and the hourly numbers of minor events are counted. Ground deformation data are recorded at time intervals of 1-60 minutes. These data are stored in the terminals temporarily, and transmitted to the host computer upon command from either the host computer or terminals. Experimental monitoring has been conducted between Sakumjima Volcanological Observatory and several stations in the Satsunan and Kyushu Islands. The seismic and eruptive activities of Suwanosejima volcano have been monitored by this system since May 1989. At the volcano. earthquakes and air-shocks accompanied by explosive activity have been observed over the two periods, June 22-26 and September 16-November 6, 1989. B-type earthquakes occurred prior to the relatively prolonged eruptive activity from September to November. Intermittent occurences of volcanic tremors were also clearly recognized from the change in mean amplitudes of seismic waves.

Journal

Citations (3)*help

See more

Details 詳細情報について

Report a problem

Back to top