SOTEM野外数据采集中的关键参数分析

doi:10.11720/wtyht.2024.1197

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Abstract

The grounded-source short-offset transient electromagnetic (SOTEM) method involves many parameters in field data acquisition. The selection of these parameters is closely associated with the signal quality and detection sensitivity of measured data. Based on the relevant provisions in the organization standard, Technical specification for grounded-source short-offset transient electromagnetic method (T/CGS 002—2021), issued by the Chinese Geophysical Society, numerical emulations, and practical cases, this study analyzed and expounded the selection criteria of critical parameters like transmitting source length, transmitting fundamental frequency, offset, device type, and observation component. The insights obtained in this study are significant for guiding the field construction of the SOTEM device and leveraging its detection performance.

Key words： SOTEM data acquisition offset device type transmitting fundamental frequency

Received: 04 May 2023 Published: 21 October 2024

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	Wei-Ying CHEN
	Guo-Qiang XUE
	Hai LI

Cite this article:

Wei-Ying CHEN,Guo-Qiang XUE,Hai LI. Analysis of critical parameters in the field acquisition of short-offset transient electromagnetic data[J]. Geophysical and Geochemical Exploration, 2024, 48(5): 1169-1175.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2024.1197 OR https://www.wutanyuhuatan.com/EN/Y2024/V48/I5/1169

Schematic diagram of the SOTEM method

Observation time range corresponding to the launch fundamental frequencyof V8 system

Measured SOTEM decay curves due to different base frequency

Measured SOTEM decay curves due to different offset

Schematic diagram for broadside configuration of SOTEM

Schematic diagram for inline configuration of SOTEM

Measured different components responses of SOTEM

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