2009
DOI: 10.1111/j.1365-2478.2008.00778.x
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Abstract: A B S T R A C TWe study the feasibility of the application of an indirect EM geothermometer, developed recently, to the temperature extrapolation in depth using magnetotelluric data collected in the seismically active northern Tien Shan faulted area (Bishkek Geodynamic Test Site, Kyrgyzstan) and Hengill geothermal zone (Iceland). The approach used is based on the artificial neural network technique, which does not imply the prior knowledge of the electrical conductivity mechanisms on the one hand and provides … Show more

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Cited by 20 publications
(10 citation statements)
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“…7. Well logs (solid lines) and estimated temperature profiles (lines with triangles) obtained using extrapolation on the lower half of the profile by the net trained on the correspondence between the electrical conductivity and temperature at the points belonging to the upper half of the profile (after (Spichak and Zakharova, 2009)). temperature estimations than those obtained using any interpolation or extrapolation of the temperature well logs.…”
Section: Discussionmentioning
confidence: 99%
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“…7. Well logs (solid lines) and estimated temperature profiles (lines with triangles) obtained using extrapolation on the lower half of the profile by the net trained on the correspondence between the electrical conductivity and temperature at the points belonging to the upper half of the profile (after (Spichak and Zakharova, 2009)). temperature estimations than those obtained using any interpolation or extrapolation of the temperature well logs.…”
Section: Discussionmentioning
confidence: 99%
“…Routine MATLAB based techniques used to this end often result in erroneous temperature values, while existing indirect geothermometers provide the temperature estimations only at some characteristic depths. On the contrary, the EM indirect geothermometer could be used for the temperature estimation at arbitrary pre-determined depth (Spichak and Zakharova, 2009;Spichak et al, 2010) constrained only by the deepness of the EM sounding technique used to this end. We will discuss below the results obtained for the northern Tien Shan area following the paper (Spichak and Zakharova, 2009).…”
Section: Em Temperature Extrapolation In Depthmentioning
confidence: 99%
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“…It was first proposed by Spichak et al (2007) and further developed in Spichak and Zakharova (2009a, 2009b, 2010. It was first proposed by Spichak et al (2007) and further developed in Spichak and Zakharova (2009a, 2009b, 2010.…”
Section: General Scheme Of the Electromagnetic Geothermometermentioning
confidence: 99%
“…Dependence of the average relative error ε of the EM temperature extrapolation in the Tien Shan area on the portion d of the temperature well logs used for the neuronet training (afterSpichak and Zakharova, 2009a).…”
mentioning
confidence: 99%