{"@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/1363670318677614208.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/90jb02637"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F90JB02637"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/90JB02637"}}],"dc:title":[{"@value":"Tidal responses and earthquake‐related changes in the water level of deep wells"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Monitoring of the water level has been continued in 100‐m‐deep and 500‐m‐deep wells in the southern Kanto District, Japan, to examine the relationship between changes in the well water level and earthquake occurrence. By using a Bayesian approach, the observed data were decomposed into four components: tidal response, barometric response, trend (drift), and irregular (noise) components. Loading effects of the ocean tide on aquifer dilatation were evaluated by using Schwiderski's ocean tide models and the harmonic constants compiled by the International Hydrographic Bureau. Well‐aquifer properties were examined based on the tidal and barometric responses of the water level. Coseismic water level steps were detected in both wells for two earthquakes during the observation period from April 1985 to December 1989. By calibrating the strain sensitivity of the well water levels based on the tidal responses, strain changes equivalent to the coseismic steps in the water levels were estimated. The coseismic strain changes obtained for the deeper well can be explained reasonably by earthquake fault models in a viscoelastic half‐space. However, those observed in the shallower well were too large and in the wrong direction to be explained by the earthquake fault models.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670318677614209","@type":"Researcher","foaf:name":[{"@value":"George Igarashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670318677614208","@type":"Researcher","foaf:name":[{"@value":"Hiroshi Wakita"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1991-03-10","prism:volume":"96","prism:number":"B3","prism:startingPage":"4269","prism:endingPage":"4278"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F90JB02637"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/90JB02637"}],"createdAt":"2008-02-06","modifiedAt":"2023-09-22","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390001204237106048","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Coseismic and Postseismic Groundwater Pressure Changes"},{"@value":"地震時および地震後の地下水圧変化"},{"@language":"ja-Kana","@value":"ジシンジ オヨビ ジシン ゴ ノ チカ スイアツ ヘンカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204553576576","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Preface"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206238676736","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Studies on deep groundwater changes for detecting the precursors of anticipated large earthquakes off Miyagi Prefecture:"},{"@language":"ja","@value":"宮城県沖大地震の前兆を捉えるための深層地下水変動研究："},{"@value":"宮城県沖大地震の前兆を捉えるための深層地下水変動研究:2008年2月～2009年12月の観測結果"},{"@language":"ja-Kana","@value":"ミヤギケンオキ ダイジシン ノ ゼンチョウ オ トラエル タメ ノ シンソウ チカスイ ヘンドウ ケンキュウ 2008ネン 2ガツ 2009ネン 12ガツ ノ カンソク ケッカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206512716928","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Changes in groundwater level associated with the 2003 Tokachi-oki earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679529728128","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Long range gas-geochemical anomalies of a remote earthquake recorded simultaneously at distant monitoring stations in India"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680172225152","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"1999 年台湾集集地震の震源域周辺の扇状地における地震時の井戸水位増加と強震動との関係について"},{"@language":"en","@value":"Relation between the strong ground motion and coseismic well water level rises during the 1999 Chi-Chi, Taiwan, earthquake in the alluvial fan near the hypocentral region."},{"@language":"ja-Kana","@value":"1999ネン タイワンシュウシュウ ジシン ノ シンゲンイキ シュウヘン ノ センジョウチ ニ オケル ジシンジ ノ イド スイイ ゾウカ ト キョウシンドウ ト ノ カンケイ ニ ツイテ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317024403968","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Coseismic changes in groundwater level during the 2018 Hokkaido Eastern Iburi earthquake"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/90jb02637"},{"@type":"CROSSREF","@value":"10.5575/geosoc.117.451_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"},{"@type":"CROSSREF","@value":"10.2343/geochemj.42.1_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"},{"@type":"CROSSREF","@value":"10.9795/bullgsj.67.1_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"},{"@type":"CROSSREF","@value":"10.5026/jgeography.2012ap03_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"},{"@type":"CROSSREF","@value":"10.2343/geochemj.1.0109_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"},{"@type":"CROSSREF","@value":"10.1186/bf03353071_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"},{"@type":"CROSSREF","@value":"10.1186/s40623-020-01152-y_references_DOI_QKvhLZvcQXs6r9PeCCgKeT2NvUW"}]}