Analysis of transient electromagnetic response characteristics under undulating terrain conditions

Xijin Song; Keming Huang

doi:10.1117/12.3019689

23 January 2024 Analysis of transient electromagnetic response characteristics under undulating terrain conditions

Xijin Song, Keming Huang

Proceedings Volume 12978, Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023); 129782A (2024) https://doi.org/10.1117/12.3019689
Event: 2023 4th International Conference on Geology, Mapping and Remote Sensing (ICGMRS 2023), 2023, wuhan, China

Abstract

Transient electromagnetic method for undulating terrain is a time-domain electromagnetic exploration method considering topographic effect. By studying the influence of topographic factors on the interpretation of electromagnetic data, qualitative concepts such as the form, scale and electrical parameters of ore bodies can be given as far as possible, which is the key to efficient exploration of mineral resources in terrain areas. In this paper, based on the three-dimensional forward modeling theory of time-domain electromagnetic method, the multi-physical field simulation software COMSOL is used to establish a profile measurement and exploration model. The transient electromagnetic response characteristics of different fluctuation degrees in flat and undulating terrain under different emission current intensities are studied respectively. The results show that the amplitude of electromagnetic response increases with the increase of emission current intensity under flat terrain conditions. In undulating terrain, the induced electromotive force amplitude at the barrier increases with the height of the barrier, but decreases with the depth of the graben.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xijin Song and Keming Huang "Analysis of transient electromagnetic response characteristics under undulating terrain conditions", Proc. SPIE 12978, Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023), 129782A (23 January 2024); https://doi.org/10.1117/12.3019689

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