Влияние собственного отклика измерительной системы на результаты измерений в методе переходных процессов

Translated title of the contribution: Influence of the intrinsic response of the measuring system to the TEM measurement results

M. Sharlov, N. Kozhevnikov

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

We discuss decrease in the decay rate of the TEM voltage response in cases when TEM soundings are performed using central loop arrays with small-size transmitter loops. We show that the cause of the slowly decaying central loop TEM voltage response is the intrinsic transient response of the measuring amplifier. This effect is the more noticeable the smaller the transmitter loop and/or the more resistive the ground. The effect is not observed when the receiver loop is located outside the transmitter loop. Inversion of the late time TEM response without regards to the intrinsic response of measuring unit results in appearance of nonexistent conductive ground layers and thus in misinterpretation of the TEM data. To reduce the intrinsic transient response of the measuring amplifier, the following may be useful: reduction of the latest measurement time, subtracting the intrinsic transient response from the total one, disconnection of the amplifier from the receiver loop during the current turnoff in the transmitter loop.

Translated title of the contributionInfluence of the intrinsic response of the measuring system to the TEM measurement results
Original languageRussian
Title of host publication15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages865-871
Number of pages7
ISBN (Electronic)9789462822825
DOIs
Publication statusPublished - 2019
Event15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019 - Gelendzhik, Russian Federation
Duration: 22 Apr 201926 Apr 2019

Publication series

Name15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019

Conference

Conference15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019
CountryRussian Federation
CityGelendzhik
Period22.04.201926.04.2019

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