%A"NONE" %D1989 %I; New Energy and Industrial Technology Development Organization, Tokyo (Japan) %2 %J[] %K15 GEOTHERMAL ENERGY, GEOTHERMAL EXPLORATION, GEOTHERMAL ENERGY, GEOCHEMICAL SURVEYS, GEOLOGIC FRACTURES, SOILS, VOLCANIC GASES, SAMPLING, PYROLYSIS, CHEMICAL ANALYSIS, CURIE POINT, MASS SPECTROMETERS, GEOTHERMAL SYSTEMS %PMedium: ED; Size: [166] pages %TReport on the survey of geothermal development at Okushiri Island, Hokkaido. Geochemical survey (Finger print method); Hokkaido Okushiritou chinetsu kaihatsu chosa chikagaku chosa (Finga print ho) hokokusho %XThe geochemical survey by the finger print method was carried out in the Okushiri Island area, Hokkaido, and places of fracture existence were extracted and districts of possible geothermal existence were estimated. The finger print method is a geochemical survey method of soil gas, and the soil gas was collected along the main roads and mountain streams at measuring intervals of 100-300m. The gas collector was buried 30cm deep from the ground surface for 17 days, and the soil gas that rose from deep underground was adsorbed/accumulated into activated carbon. The gas analysis was made by the high sensitivity Curie point pyrolysis/quadrupole mass spectrometer. As a result of the survey analysis, the existence of fracture zone was presumed in the district along the Shiromizusawa that is a branch of the Horonai River, district along the road of the Okushiri Island line and district 1.5km WSW from the 5.8K Pass. Further, out of all 12 specimens, 6 specimens of Type X were distributed in a group in the district 1km square in north, south, east and west with the top of Mt. Shokan almost as the center. The possible existence of geothermal reservoirs was presumed. (NEDO) %0Technical Report %NJP-NEDO-010019294;TRN: JN0240544 %1 %CJapan %Rhttps://doi.org/ TRN: JN0240544 NEDO %GJapanese