ON THE OPTIMUM LOCATION AND ENVI-RONMENTAL CONDITIONS OF A GEORE-SISTIVITY OBSERVATION STATION
Li Zhengnan; Zhao Yulin(Institute of Geophysics, SSB, Beijing 100081, China)Zhang Dexin(Seismological Bureau of Shanxi Province, Taiyuan 030002, China)
篗ore than 100 georesistivity observation stations have been built in China since1966. However, even in the same area, some of the stations are of good capacity to re-flect seismicity, but the others are rather poor. It raises a problem: what types of loca-tions and environments of the stations are essential and effective for earthquake predic-tion? To solve this prob1em, the authors studied the relevant matters and proposedsome principles and measures to reduce the disturbance for the stations and to increasethe capacity of the stations to reflect the seismicity. The main contents discussing aboutthe location and environments of the georesistivity observation are as follows: the geo-logical structure, the geotectonic medium distribution beneath the observed area, thehydrologic condition of the medium, the morphological condition and theelectromagnetic interference, etc.. The authors hold that the above-mentioned aspectsare essential and effective measures for selecting and appraising the location and envi-ronments of a georesistivity observation station.