{"@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/1390282679073067136.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.5110/jjseg.40.99"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"4762933"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/4762933"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I4762933"}},{"identifier":{"@type":"NAID","@value":"110003335024"}}],"dc:title":[{"@language":"en","@value":"Estimating Permeability Change and Specific Yield from Earthquake-induced Hydrological Changes: an Example from Kobe Earthquake."},{"@value":"地震時の地下水変動から推定される淡路島北部地域の水理特性"},{"@language":"ja-Kana","@value":"ジシンジ ノ チカスイ ヘンドウ カラ スイソク サレル アワジシマ ホクブ チイキ ノ スイリ トクセイ"}],"dcterms:alternative":[{"@language":"en","@value":"Earthquake-induced Hydrological Changes: an Example from Kobe Earthquake"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"The Dupuit-Ghyben-Herzberg model was applied to the Awajishima Island to explain hydrologic changes associated with the 1995 Hyogo-ken Nanbu (Kobe) Earthquake, and hydraulic properties (hydraulic conductivity, specific yield) were estimated using the available quantitative data. Results indicate that the hydraulic conductivity has increase at least 5 times over the pre-seismic value, and that the specific yield of the unconfined aquifer is at around 0.3 to 1.7% depending on the assumed recharge rate but regardless of the depth to the impermeable basement. Upward migration of deeper water due to salt-water intrusion may explain the change of chemical composition of discharged water. This analysis suggests the necessity of measuring the increase of the discharged water just after an earthquake to properly estimate the change in the hydraulic conductivity of the aquifer."},{"@value":"1995年兵庫県南部地震に伴って発生した淡路島北部における地下水変動データを用いて, 当該地域の水理特性 (透水係数の変化の割合, 比産出率 (Specific yield)) を推定した. ここでは, 淡路島北部を横断する断面を用い, Dupuit-Ghyben-Herzbergモデルと単純なDupuitモデルを組み合わせることによって現象を表現することを試みた. 計測された断層沿いの湧出量の経時変化と山地部における地下水位の低下を拘束条件として地震前後の透水係数の変化と比産出率を推定したところ, 透水係数は地震後に地震前の5倍以上に増加し, 比産出率は0.3から1.7%程度であるという結果が得られた. また, 本モデルの結果から, 地震前後の湧水の主成分の変化の原因の可能性として, 帯水層への塩水の浸入に伴う深層地下水の排出が考えられた. さらに, 地震直後の湧水量の増加は, 透水係数の増加の割合に非常に敏感であることから, 地震直後の湧水量の計測が重要であることが示された."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420845751153672576","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"70237072"},{"@type":"NRID","@value":"1000070237072"},{"@type":"NRID","@value":"9000404540537"},{"@type":"NRID","@value":"9000258269340"},{"@type":"NRID","@value":"9000018392920"},{"@type":"NRID","@value":"9000308368053"},{"@type":"NRID","@value":"9000409905672"},{"@type":"NRID","@value":"9000356667500"},{"@type":"NRID","@value":"9000263058882"},{"@type":"NRID","@value":"9000410907120"},{"@type":"NRID","@value":"9000415313576"},{"@type":"NRID","@value":"9000248220121"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/T_Tokunaga"}],"foaf:name":[{"@language":"en","@value":"TOKUNAGA Tomochika"},{"@language":"ja","@value":"徳永 朋祥"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Geosystem Engineering University of Tokyo"},{"@language":"ja","@value":"東京大学大学院工学系研究科"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"02867737"},{"@type":"EISSN","@value":"18840973"},{"@type":"NDL_BIB_ID","@value":"000000002410"},{"@type":"ISSN","@value":"02867737"},{"@type":"LISSN","@value":"02867737"},{"@type":"NCID","@value":"AN00026635"}],"prism:publicationName":[{"@language":"ja","@value":"応用地質"},{"@language":"en","@value":"Journal of the Japan Society of  Engineering Geology"},{"@language":"en","@value":"Journal of the Japan Society of Engineering Geology"},{"@language":"en","@value":"JJSEG"},{"@language":"en","@value":"Jour. Japan Soc. Eng. Geol."},{"@language":"ja","@value":"応用地質"}],"dc:publisher":[{"@language":"en","@value":"Japan Society of Engineering Geology"},{"@language":"ja","@value":"一般社団法人 日本応用地質学会"}],"prism:publicationDate":"1999","prism:volume":"40","prism:number":"2","prism:startingPage":"99","prism:endingPage":"106"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","url":[{"@id":"http://id.ndl.go.jp/bib/4762933"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I4762933"}],"availableAt":"1999","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Hyogo-ken%20Nanbu%20(Kobe)%20Earthquake","dc:title":"Hyogo-ken Nanbu (Kobe) Earthquake"},{"@id":"https://cir.nii.ac.jp/all?q=Awajishima%20ISland","dc:title":"Awajishima ISland"},{"@id":"https://cir.nii.ac.jp/all?q=hydraulic%20properties","dc:title":"hydraulic properties"},{"@id":"https://cir.nii.ac.jp/all?q=Dupuit-Ghyben-Herzberg%20model","dc:title":"Dupuit-Ghyben-Herzberg model"},{"@id":"https://cir.nii.ac.jp/all?q=%E5%85%B5%E5%BA%AB%E7%9C%8C%E5%8D%97%E9%83%A8%E5%9C%B0%E9%9C%87","dc:title":"兵庫県南部地震"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%B7%A1%E8%B7%AF%E5%B3%B6%E5%8C%97%E9%83%A8","dc:title":"淡路島北部"},{"@id":"https://cir.nii.ac.jp/all?q=%E6%B0%B4%E7%90%86%E7%89%B9%E6%80%A7","dc:title":"水理特性"},{"@id":"https://cir.nii.ac.jp/all?q=Dupuit-Ghyben-Herzberg%E3%83%A2%E3%83%87%E3%83%AB","dc:title":"Dupuit-Ghyben-Herzbergモデル"}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050025031477434368","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ground uplift related to permeability enhancement following the 2011 Tohoku earthquake in the Kanto Plain, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011145010675968","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"Permeability enhancement in the shallow crust as a cause of 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