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FY 1998 report on the verification survey of geothermal survey technology, etc./Development of the reservoir fluctuation survey method (Summary). Theme 2. Development of the gravity survey method; 1998 nendo chinetsu tansa gijutsu nado kensho chosa choryuso hendo tansaho kaihatsu hokokusho (yoyaku). 2. Juryoku tansaho kaihatsu

Abstract

As to the construction of a network system for gravity measurement, the continued observation of groundwater level was carried out as a 24-hour observation by setting water-level gauges at 10 wells. At one of the wells (No. 5), the 24-hour continued measurement was conducted for gravity as well as groundwater level. At the 9 wells except No. 5 well, the traveling measurement of gravity was made. In relation to the gravity measurement, the periodic measurement of three times a year was conducted at 138 measuring points. And at the same time, the elevation at measuring point was asked by a combination of GPS measuring and level measuring. Concerning the borehole gravity meter, the existing gravity calculation program was revised, and the model calculation of borehole gravity values was made. In the analysis/evaluation, as to the gravity fluctuation analysis, relations were studied between the groundwater level fluctuation and gravity fluctuation. Also conducted were study of effects of the unsaturated zone density fluctuation on gravity and selection of a measuring method of the soil water content saturation degree. In regard to the study of the precise gravity measuring method, the vertical gravity gradient was measured, and the correction method was studied. Further,  More>>
Authors:
"NONE"
Publication Date:
Mar 01, 1999
Product Type:
Technical Report
Report Number:
JP-NEDO-010014661
Resource Relation:
Other Information: PBD: Mar 1999
Subject:
15 GEOTHERMAL ENERGY; GEOTHERMAL EXPLORATION; RESERVOIR ROCK; GRAVITY SURVEYS; GROUND WATER; WATER TABLES; GRAVITY LOGGING; GLOBAL ASPECTS; POSITIONING; GROUND LEVEL; SOILS; TIDE; WATER SATURATION; CORRELATIONS
OSTI ID:
20132040
Research Organizations:
New Energy and Industrial Technology Development Organization, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
TRN: JN0041416
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20132040
Submitting Site:
NEDO
Size:
241 pages
Announcement Date:

Citation Formats

FY 1998 report on the verification survey of geothermal survey technology, etc./Development of the reservoir fluctuation survey method (Summary). Theme 2. Development of the gravity survey method; 1998 nendo chinetsu tansa gijutsu nado kensho chosa choryuso hendo tansaho kaihatsu hokokusho (yoyaku). 2. Juryoku tansaho kaihatsu. Japan: N. p., 1999. Web.
FY 1998 report on the verification survey of geothermal survey technology, etc./Development of the reservoir fluctuation survey method (Summary). Theme 2. Development of the gravity survey method; 1998 nendo chinetsu tansa gijutsu nado kensho chosa choryuso hendo tansaho kaihatsu hokokusho (yoyaku). 2. Juryoku tansaho kaihatsu. Japan.
1999. "FY 1998 report on the verification survey of geothermal survey technology, etc./Development of the reservoir fluctuation survey method (Summary). Theme 2. Development of the gravity survey method; 1998 nendo chinetsu tansa gijutsu nado kensho chosa choryuso hendo tansaho kaihatsu hokokusho (yoyaku). 2. Juryoku tansaho kaihatsu." Japan.
@misc{etde_20132040,
title = {FY 1998 report on the verification survey of geothermal survey technology, etc./Development of the reservoir fluctuation survey method (Summary). Theme 2. Development of the gravity survey method; 1998 nendo chinetsu tansa gijutsu nado kensho chosa choryuso hendo tansaho kaihatsu hokokusho (yoyaku). 2. Juryoku tansaho kaihatsu}
abstractNote = {As to the construction of a network system for gravity measurement, the continued observation of groundwater level was carried out as a 24-hour observation by setting water-level gauges at 10 wells. At one of the wells (No. 5), the 24-hour continued measurement was conducted for gravity as well as groundwater level. At the 9 wells except No. 5 well, the traveling measurement of gravity was made. In relation to the gravity measurement, the periodic measurement of three times a year was conducted at 138 measuring points. And at the same time, the elevation at measuring point was asked by a combination of GPS measuring and level measuring. Concerning the borehole gravity meter, the existing gravity calculation program was revised, and the model calculation of borehole gravity values was made. In the analysis/evaluation, as to the gravity fluctuation analysis, relations were studied between the groundwater level fluctuation and gravity fluctuation. Also conducted were study of effects of the unsaturated zone density fluctuation on gravity and selection of a measuring method of the soil water content saturation degree. In regard to the study of the precise gravity measuring method, the vertical gravity gradient was measured, and the correction method was studied. Further, the development was made of tidal models which are adaptable to the Yanaizu-Nishiyama area. (NEDO)}
place = {Japan}
year = {1999}
month = {Mar}
}