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一、“土地电” 1.原理地下存在一种微弱的电流,我们叫它为自然电流或大地电流。地震前,这种电流的大小要发生变化,特别是大地震前,这种变化更加明显。“土地电”就是用微安表或毫伏表测定任意两点间自然电流和自然电位差的变化来预测、预报地震的。 2.装置在东西、南北两个方向相距数米到100米左右,各挖两个深1.5米以上的坑,分别埋入电极,将电极用导线焊接起来,并串连一个微安表或毫伏表,见图1。
First, the “land of electricity” 1. Principle There is a weak underground current, we call it natural or earth current. Before the earthquake, the magnitude of this current should change, especially before the earthquake. “Land electricity” is the use of micro-ampere meter or millivoltmeter to measure any point between the natural current and natural potential difference to predict and predict the earthquake. 2. Installation in the east-west, north-south two meters away from the direction of several meters to 100 meters, each dug two more than 1.5 meters deep pit, respectively, buried electrode, the electrode wire together, and in series with a microammeter or milliam Voltmeter, see Figure 1.