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随着瞬变电磁法的研究逐渐转向高海拔山区等地形地质条件复杂地区进行深部勘探,地空瞬变电磁法得到了更多的关注.地空瞬变电磁法结合了地面瞬变电磁法和航空瞬变电磁法各自的特点,相比地面瞬变电磁法,能有效提高野外工作效率;相比航空瞬变电磁法,勘探深度更大、采集信号信噪比更高.近几年来,地空瞬变电磁法得到了较快的发展.本文回顾了地空瞬变电磁法的历史发展与现状,总结了地空瞬变电磁法研究的最新进展,并对地空瞬变电磁法的各种装置类型进行了相关评述和总结,指出目前地空瞬变电磁法的问题主要在于解释水平跟不上,大都仍采用基于地面瞬变电磁的数据解释方法.为了进一步丰富地空瞬变电磁勘查体系,从仪器装备、数据预处理和处理技术、正反演及数据解释等方面对地空瞬变电磁法的发展方向进行了总结.
With the research of transient electromagnetic method gradually turned to the deep exploration in areas with high topographic and mountainous conditions and other topographic and geological conditions, ground-based transient electromagnetic method has drawn more attention. The ground-based transient electromagnetic method combines the ground transient electromagnetic method Compared with the transient electromagnetic method, it can effectively improve the working efficiency in the field. Compared with the airborne transient electromagnetic method, the exploration depth is greater and the signal-to-noise ratio of the collected signal is higher. In recent years, Space transient electromagnetic method has been developed rapidly.This paper reviews the history and development of the earth-space transient electromagnetic method and summarizes the latest research progress of the ground-based transient electromagnetic method, The types and types of devices are reviewed and summarized. It is pointed out that the problem of ground-based transient electromagnetic method mainly lies in the level of explanation, and most data interpretation methods based on terrestrial transient electromagnetic are still used.In order to further enrich the ground-based transient electromagnetic prospecting System, summarizes the development direction of the air-ground TEM from aspects of equipment, data preprocessing and processing technology, forward and inversion and data interpretation.