在中国,自从1957年起,与各种地球物理方法(解决石油地貭任务)广泛发展的同时,比較年輕的大地电流法也得到了很大的发展。大地中存在大地电流,这在一百多年前就知道了。以往的观測表明,大地电流具有脉动性貭,它的大小和方向随时間而变化,并在地球表面很多地区同时出現。大地电流的产生、它的变化以及与地磁場的关系,还沒有搞得相当清楚,这是一个需要进一步研究的問題。 In China, the relatively young earth current method has also been greatly developed since 1957, in parallel with the extensive development of various geophysical methods (addressing the task of petroleum geology). There is earth current in the earth, which was known more than a hundred years ago. Past observations show that the earth current has a pulsating nature, its size and direction change over time and occur simultaneously in many parts of the Earth’s surface. The generation of earth current, its change and its relationship with the geomagnetic field have not been made quite clear. This is a problem that needs further study.