Abstract
As a type of widely used geophysical exploration equipment, artificial-source electromagnetic instruments are effectively used for resource and energy exploration due to their simple operation, deep-detecting depth, and higher resolution in the field, compared to natural-source electromagnetic instruments. However, after years of development, the current work is in a significant period. Due to the exploration requirement gradually shifting from shallow-surface to deep, traditional electromagnetic instruments are facing severe challenges. Over the course of the elaborate study by geophysicists in China, electromagnetic instruments have made innovative breakthroughs during recent years. The application in the deep exploration of artificial-source electromagnetic instruments has been further extended. By taking the time–frequency electromagnetic instrument, the low-temperature transient electromagnetic instrument, the surface electromagnetic prospecting instrument, and the wide-field electromagnetic instrument as examples, the purpose of this paper is to give a systematic introduction to the technical indicators and field applications. Then, an overview of the situation and progress of the instrument is given to help the readers understand the research directions. Finally, we offer the developing trends of the deep exploration artificial-source electromagnetic instrument.
Published Version
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