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MT2-D inversion analysis in Kakkonda geothermal field; Kakkonda chinetsu chiiki ni okeru MT ho nijigen kaiseki

Abstract

Data, collected from an MT method-assisted survey conducted in the Kakkonda geothermal region in 1987, was re-examined, and a new structure was found. The review was carried out by use of a 2D analysis in the TM mode. According to the 1D analysis of 1987 and the geological data gathered then, it is estimated that the resistivity structure of this region runs in the northwest-southeast direction. A northeast-southwest traverse line was set for this analysis, orthogonal to the strike, and the impedance at each observation spot was caused to rotate to this direction across the whole range of frequency. Furthermore, in 1994-95, surveys were conducted using arrayed CSMT/MT methods. All these sum up to indicate that a high-resistivity region extends northwest in the southwestern part of the Kakkonda river but that there exists a low-resistivity region of several 10 Ohm m centering about the B traverse line. The high-resistivity region deep in the ground being the target of excavation in the Kakkonda region, to collect knowledge about this high-resistivity is important, and here the effectiveness of the 2d analysis has been verified. 5 refs., 11 figs.
Authors:
Yamane, K; Takasugi, S; [1]  Miyazaki, S; [2]  Uchida, T [3] 
  1. Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan)
  2. Japan Metals and Chemicals Co. Ltd., Tokyo (Japan)
  3. New Energy and Industrial Technology Development Organization, Tokyo, (Japan)
Publication Date:
May 01, 1996
Product Type:
Conference
Report Number:
CONF-9605233-
Reference Number:
SCA: 150301; PA: NEDO-96:913491; EDB-96:170142; SN: 96001687098
Resource Relation:
Conference: 94. SEGJ (The Society of Exploration Geophysicists of Japan) Conference, Butsuri tansa gakkai dai 94 kai (1996 nendo shunki) gakujutsu koenkai, Tokyo (Japan), 15-17 May 1996; Other Information: PBD: May 1996; Related Information: Is Part Of Proceedings of the 94th SEGJ (The Society of Exploration Geophysicists of Japan) Conference; PB: 475 p.; Butsuri tansa gakkai dai 94 kai (1996 nendo shunki) gakujutsu koenkai koen ronbunshu
Subject:
15 GEOTHERMAL ENERGY; KAKKONDA GEOTHERMAL FIELD; GEOLOGIC STRUCTURES; MAGNETOTELLURIC SURVEYS; TWO-DIMENSIONAL CALCULATIONS; ELECTRIC CONDUCTIVITY; ELECTRIC IMPEDANCE; FREQUENCY RANGE; ROCK DRILLING
OSTI ID:
395528
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97709027; TRN: 96:913491
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97709027
Submitting Site:
NEDO
Size:
pp. 276-280
Announcement Date:
Dec 02, 1996

Citation Formats

Yamane, K, Takasugi, S, Miyazaki, S, and Uchida, T. MT2-D inversion analysis in Kakkonda geothermal field; Kakkonda chinetsu chiiki ni okeru MT ho nijigen kaiseki. Japan: N. p., 1996. Web.
Yamane, K, Takasugi, S, Miyazaki, S, & Uchida, T. MT2-D inversion analysis in Kakkonda geothermal field; Kakkonda chinetsu chiiki ni okeru MT ho nijigen kaiseki. Japan.
Yamane, K, Takasugi, S, Miyazaki, S, and Uchida, T. 1996. "MT2-D inversion analysis in Kakkonda geothermal field; Kakkonda chinetsu chiiki ni okeru MT ho nijigen kaiseki." Japan.
@misc{etde_395528,
title = {MT2-D inversion analysis in Kakkonda geothermal field; Kakkonda chinetsu chiiki ni okeru MT ho nijigen kaiseki}
author = {Yamane, K, Takasugi, S, Miyazaki, S, and Uchida, T}
abstractNote = {Data, collected from an MT method-assisted survey conducted in the Kakkonda geothermal region in 1987, was re-examined, and a new structure was found. The review was carried out by use of a 2D analysis in the TM mode. According to the 1D analysis of 1987 and the geological data gathered then, it is estimated that the resistivity structure of this region runs in the northwest-southeast direction. A northeast-southwest traverse line was set for this analysis, orthogonal to the strike, and the impedance at each observation spot was caused to rotate to this direction across the whole range of frequency. Furthermore, in 1994-95, surveys were conducted using arrayed CSMT/MT methods. All these sum up to indicate that a high-resistivity region extends northwest in the southwestern part of the Kakkonda river but that there exists a low-resistivity region of several 10 Ohm m centering about the B traverse line. The high-resistivity region deep in the ground being the target of excavation in the Kakkonda region, to collect knowledge about this high-resistivity is important, and here the effectiveness of the 2d analysis has been verified. 5 refs., 11 figs.}
place = {Japan}
year = {1996}
month = {May}
}