You need JavaScript to view this

Precise measurement of remanent magnetism of rocks under non-magnetic fields; Mujikaika deno ganseki zanryu jiki no seimitsu sokutei

Abstract

Various magnetic information data from solidification or deposition up to date are contained in rocks. For the analysis of remanent magnetism, in general, the stable thermal remanent magnetization and the secondary magnetization are separately evaluated using vector variations determined by the location changes of magnetic pole from ac demagnetization or thermal demagnetization. Especially, in geothermal fields, the remanent magnetism in rocks is complicated due to the predominant alteration. When the remanent magnetism of rocks can be precisely measured and the primary and secondary magnetization can be evaluated, important data can be obtained, which represent oriented core samples required for evaluating the geothermal reservoirs. A rock remanent magnetism measuring system using superconductive magnetic shield has been developed, to evaluate the location of magnetic pole. This system can distinguish the remanent magnetization in rocks, and can be applied to the remanent magnetism in rocks in which the location of dipole model is shifted from the center of core. Important basic data of orientation information in rocks can be provided. 6 figs.
Authors:
Oda, Y; Nakatsuka, K [1] 
  1. Tohoku University, Sendai (Japan)
Publication Date:
Oct 22, 1997
Product Type:
Conference
Report Number:
ETDE/JP-98751022; CONF-9710214-
Reference Number:
SCA: 150301; PA: JP-97:0G4581; EDB-98:072597; SN: 98001944517
Resource Relation:
Conference: 97. SEGJ conference, Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai, Sapporo (Japan), 22-24 Oct 1997; Other Information: PBD: 22 Oct 1997; Related Information: Is Part Of Proceeding of the 97th (Fall, Fiscal 1997) SEGJ Conference; PB: 371 p.; Butsuri tansa gakkai dai 97 kai (1997 nendo shuki) gakujutsu koenkai koen ronbunshu
Subject:
15 GEOTHERMAL ENERGY; MAGNETIC SHIELDING; SUPERCONDUCTING MAGNETS; ROCKS; MAGNETIC SUSCEPTIBILITY; DRILL CORES; MAGNETIZATION; GEOTHERMAL FIELDS; HYDROTHERMAL ALTERATION; MAGNETIC SURVEYS
OSTI ID:
622755
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE98751022; TRN: JN97G4581
Availability:
Available from Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, (Japan); OSTI as DE98751022
Submitting Site:
NEDO
Size:
pp. 309-312
Announcement Date:

Citation Formats

Oda, Y, and Nakatsuka, K. Precise measurement of remanent magnetism of rocks under non-magnetic fields; Mujikaika deno ganseki zanryu jiki no seimitsu sokutei. Japan: N. p., 1997. Web.
Oda, Y, & Nakatsuka, K. Precise measurement of remanent magnetism of rocks under non-magnetic fields; Mujikaika deno ganseki zanryu jiki no seimitsu sokutei. Japan.
Oda, Y, and Nakatsuka, K. 1997. "Precise measurement of remanent magnetism of rocks under non-magnetic fields; Mujikaika deno ganseki zanryu jiki no seimitsu sokutei." Japan.
@misc{etde_622755,
title = {Precise measurement of remanent magnetism of rocks under non-magnetic fields; Mujikaika deno ganseki zanryu jiki no seimitsu sokutei}
author = {Oda, Y, and Nakatsuka, K}
abstractNote = {Various magnetic information data from solidification or deposition up to date are contained in rocks. For the analysis of remanent magnetism, in general, the stable thermal remanent magnetization and the secondary magnetization are separately evaluated using vector variations determined by the location changes of magnetic pole from ac demagnetization or thermal demagnetization. Especially, in geothermal fields, the remanent magnetism in rocks is complicated due to the predominant alteration. When the remanent magnetism of rocks can be precisely measured and the primary and secondary magnetization can be evaluated, important data can be obtained, which represent oriented core samples required for evaluating the geothermal reservoirs. A rock remanent magnetism measuring system using superconductive magnetic shield has been developed, to evaluate the location of magnetic pole. This system can distinguish the remanent magnetization in rocks, and can be applied to the remanent magnetism in rocks in which the location of dipole model is shifted from the center of core. Important basic data of orientation information in rocks can be provided. 6 figs.}
place = {Japan}
year = {1997}
month = {Oct}
}