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Static shift correction of MT data in Tohoku district using TEM soundings; TEM ho data wo mochiita Tohoku chiho MT ho data no statistic shift hosei

Abstract

There is a possibility that the wide-band MT observation data obtained in the central part of Tohoku district include the static shift effect. To grasp the static shift effect in the MT data, the TEM soundings were conducted at all the site where the MT data were measured. The TEM sounding system was developed for the shallow survey depth ranging from 5 m to 150 m. When showing the measured results on the histogram, it was found that the static shifts were concentrated in the vicinity of zero. About 70% of the data was below 0.2 decade. Only a slight static shift effect was observed. This means that the results obtained by the two-dimensional analysis are plausible. Especially, the static shift around plain was small. Therefore, the current results around the plain were trustful. On the other hand, the static shift in the mountainous area was rather large. Accordingly, the results around the mountainous area should be carefully treated. 7 refs., 10 figs.
Authors:
Kawakami, N; Kumekawa, Y; Miura, Y; Takasugi, S; [1]  Fujinawa, Y [2] 
  1. GERD Geothermal Energy Research and Development Co. Ltd., Tokyo (Japan)
  2. National Research Institute for Disaster Prevention, Tsukuba (Japan)
Publication Date:
May 27, 1997
Product Type:
Conference
Report Number:
CONF-9705167-
Reference Number:
SCA: 440700; 580000; PA: NEDO-97:912259; EDB-97:120329; SN: 97001846551
Resource Relation:
Conference: 96. SEGJ conference, Butsuri tansa gakkai dai 96 kai (1997 nendo shunki) gakujutsu koenkai, Tokyo (Japan), 27-29 May 1997; Other Information: PBD: 27 May 1997; Related Information: Is Part Of Proceeding of the 96th (spring, fiscal 1997) SEGJ Conference; PB: 502 p.; Butsuri tansa gakkai dai 96 kai (1997 nendo shunki) gakujutsu koenkai koen ronbunshu
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 58 GEOSCIENCES; ELECTROMAGNETIC SURVEYS; DATA ANALYSIS; CORRECTIONS; FREQUENCY RANGE; MEASURING INSTRUMENTS; DEPTH; TWO-DIMENSIONAL CALCULATIONS; MOUNTAINS
OSTI ID:
522660
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97770262; TRN: 97:912259
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97770262
Submitting Site:
NEDO
Size:
pp. 271-275
Announcement Date:

Citation Formats

Kawakami, N, Kumekawa, Y, Miura, Y, Takasugi, S, and Fujinawa, Y. Static shift correction of MT data in Tohoku district using TEM soundings; TEM ho data wo mochiita Tohoku chiho MT ho data no statistic shift hosei. Japan: N. p., 1997. Web.
Kawakami, N, Kumekawa, Y, Miura, Y, Takasugi, S, & Fujinawa, Y. Static shift correction of MT data in Tohoku district using TEM soundings; TEM ho data wo mochiita Tohoku chiho MT ho data no statistic shift hosei. Japan.
Kawakami, N, Kumekawa, Y, Miura, Y, Takasugi, S, and Fujinawa, Y. 1997. "Static shift correction of MT data in Tohoku district using TEM soundings; TEM ho data wo mochiita Tohoku chiho MT ho data no statistic shift hosei." Japan.
@misc{etde_522660,
title = {Static shift correction of MT data in Tohoku district using TEM soundings; TEM ho data wo mochiita Tohoku chiho MT ho data no statistic shift hosei}
author = {Kawakami, N, Kumekawa, Y, Miura, Y, Takasugi, S, and Fujinawa, Y}
abstractNote = {There is a possibility that the wide-band MT observation data obtained in the central part of Tohoku district include the static shift effect. To grasp the static shift effect in the MT data, the TEM soundings were conducted at all the site where the MT data were measured. The TEM sounding system was developed for the shallow survey depth ranging from 5 m to 150 m. When showing the measured results on the histogram, it was found that the static shifts were concentrated in the vicinity of zero. About 70% of the data was below 0.2 decade. Only a slight static shift effect was observed. This means that the results obtained by the two-dimensional analysis are plausible. Especially, the static shift around plain was small. Therefore, the current results around the plain were trustful. On the other hand, the static shift in the mountainous area was rather large. Accordingly, the results around the mountainous area should be carefully treated. 7 refs., 10 figs.}
place = {Japan}
year = {1997}
month = {May}
}