{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360574095657447296.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jappgeo.2005.05.006"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0926985105000509?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0926985105000509?httpAccept=text/plain"}}],"dc:title":[{"@value":"Magnetotelluric resistivity modeling for 3D characterization of geothermal reservoirs in the Western side of Mt. Aso, SW Japan"}],"description":[{"notation":[{"@value":"Abstract   Geothermal reservoirs are usually located at a depth range of 2 to 5 km, so to efficiently utilize such resources an advanced prospecting method is needed to detect these deep geologic structures. This study aimed to three-dimensionally characterize geothermal reservoirs by a combination of Magnetotelluric (MT) survey, inversion analysis of apparent resistivity, and interpolation of the resistivity data obtained. The western side of Mt. Aso crater, southwest Japan, was chosen as the case study area. Three hot springs exist there and a fault is assumed to go in the direction connecting them. A MT survey was carried out at 26 sites and the data processed by a remote reference method to reduce artificial noises. Based on skewness and Mohr circle analyses of the impedance tensor, the local geologic structure at each site could be approximated as horizontally layered and therefore, a one-dimensional inversion analysis was applied to the MT raw data. The resultant resistivity column data were then interpolated by the three-dimensional optimization principle method. The resistivity distributions obtained clarified continuous conductors with especially low resistivity (less than 10 Ω·m) at the hot springs along the fault. Because the resistivity decreases largely with an abundance of clay minerals, the conductors could be considered to correspond with the cap rocks. Thus, two geothermal reservoirs, whose shapes were estimated to be pillar, were detected under the cap rocks in an elevation range of − 1000 to − 3000 m. By comparing the resistivity distributions with the temperature distributions based on fluid-flow calculations at a steady state using FEM, the validity of the location and dimension of the estimated reservoirs were confirmed."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380574095657447298","@type":"Researcher","foaf:name":[{"@value":"Hisafumi Asaue"}]},{"@id":"https://cir.nii.ac.jp/crid/1380574095657447296","@type":"Researcher","foaf:name":[{"@value":"Katsuaki Koike"}]},{"@id":"https://cir.nii.ac.jp/crid/1380574095657447299","@type":"Researcher","foaf:name":[{"@value":"Toru Yoshinaga"}]},{"@id":"https://cir.nii.ac.jp/crid/1380574095657447297","@type":"Researcher","foaf:name":[{"@value":"Shinichi Takakura"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"09269851"}],"prism:publicationName":[{"@value":"Journal of Applied Geophysics"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2006-04","prism:volume":"58","prism:number":"4","prism:startingPage":"296","prism:endingPage":"312"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0926985105000509?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0926985105000509?httpAccept=text/plain"}],"createdAt":"2005-08-09","modifiedAt":"2019-01-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050587981430736000","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Seismicity controlled by resistivity structure : the 2016 Kumamoto earthquakes, Kyushu Island, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1050866882756598272","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ability of the magnetotelluric method to image a deep conductor: Exploration of a supercritical geothermal system"},{"@value":"MT法を用いた深部低比抵抗体のイメージング能力について : 超臨界地熱資源探査の例"},{"@language":"ja-Kana","@value":"MTホウ オ モチイタ シンブ テイヒ テイコウタイ ノ イメージング ノウリョク ニ ツイテ : チョウリンカイ チネツ シゲン タンサ ノ レイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567181364897024","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Application of Magnetotelluric (MT) Resistivity to Imaging of Regional Three-Dimensional Geologic Structures and Groundwater Systems"}]},{"@id":"https://cir.nii.ac.jp/crid/1360853567481534464","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Detection of Near-Surface Permeable Zones Based on Spatial Correlation Between Radon Gas Concentration and DTM-Derived Lineament Density"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204230052352","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Current Research Status and Future of Electromagnetic Survey Methods towards Integrated Analysis with Seismic Methods"},{"@language":"ja","@value":"電磁気法探査（ＥＭ法探査）技術の現状と展望―地震探査との統合型解析に向けて―"},{"@language":"ja-Kana","@value":"デンジキホウ タンサ EMホウ タンサ ギジュツ ノ ゲンジョウ ト テンボウ ジシン タンサ トノ トウゴウガタ カイセキ ニ ムケテ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204303007488","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Current Topics in Surveys of Electrical Conductivity Structure with the Aid of the Magnetotelluric Method"},{"@language":"ja","@value":"MT法による電気伝導度構造研究の現状"},{"@language":"ja-Kana","@value":"MTホウ ニ ヨル デンキ デンドウド コウゾウ ケンキュウ ノ 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