有珠山周辺に展開した準リアルタイムGPS観測システムについて(<特集>2000年有珠山噴火 (3))

概要

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The eruption of Usu volcano started on 31 March, 2000, caused remarkable crustal deformation. In order to monitor the on-going crustal deformation around the volcano, the Japan Meteorological Agency deployed a new quasi-real time GPS system. The system includes 19 GPS stations and one analysis center. Each station consists with a cellular-phone and an single frequency GPS receiver driven by solar batteries. All the data from each station were automatically transferred to the analysis center every 2 hours. The relative co-ordinates of all stations were immediately calculated and displayed on the screen at the center. Using this system, we could detect a crustal deformation indicating a gradual decay of the magma activity of the Usu 2000 eruption on a quasi-real time base.
特定非営利活動法人日本火山学会の論文
2002-11-29