TY - GEN

T1 - Влияние собственного отклика измерительной системы на результаты измерений в методе переходных процессов

AU - Sharlov, M.

AU - Kozhevnikov, N.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85071362677&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/c47391af-e74f-3181-87d9-07b9aa5de373/

U2 - 10.3997/2214-4609.201901786

DO - 10.3997/2214-4609.201901786

M3 - статья в сборнике материалов конференции

AN - SCOPUS:85071362677

SN - 9789462822825

T3 - 15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019

SP - 865

EP - 871

BT - 15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019

PB - European Association of Geoscientists and Engineers, EAGE

T2 - 15th Conference and Exhibition Engineering and Mining Geophysics 2019, Gelendzhik 2019

Y2 - 22 April 2019 through 26 April 2019

ER -