【摘要】 本文介绍了深井垂直天线与地表天线同步接收的多频道电磁波接收装置的原理和结构,以及1985年以来观测的初步结果及震前电磁波异常特征。更多还原

【Abstract】 We have manufactured a multichannel reception device-the vertical deep-well antenna, which can be used synchronously with the antenna on the surface. In this paper, the principle and the structure of the device are introduced, At the same time, the preliminary results from observations since 1985 and the anomalous characteristics of electromagnetic waves before the four moderate earthquakes (magnitude larger than 5) occurred within 300 km range around the abservational site at Wuliduo, Kunming, during the period of observation are presented as well.更多还原