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A Seismic Exploration over Kirishima Volcanoes with New Acquisition Systems
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, International Symposium on Recent Advances in Exploration Geophysics (RAEG 1995), Nov 1995, cp-423-00001
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Abstract
A seismic exploration has been conducted over Kirishima Volcanoes, southern Kyushu, Japan in November to December 1994. The exploration is designed both to estimate velocity structure with reaction method and to detect magma pockets beneath the volcanoes with reflections. The survey lines consists of 163 stations with independent recording systems and total length is about 60 kilometers. The recording system in this exploration is newly developed for overcoming poor conditions over volcanic area with steep topography. Specifications of this recording system are as follows; light weight, high resolution, low power consumption, large capacity and precise time base synchronization with GPS. This recorder with light-weight and high-performance enables us to conduct seismic explorations over any volcanic area. An outline of the exploration and some results of analysis will be presented.