{"@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/1362262943833837952.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/2014jb010978"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2014JB010978"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2014JB010978"}}],"dc:title":[{"@value":"Stress‐induced spatiotemporal variations in anisotropic structures beneath Hakone volcano, Japan, detected by <i>S</i> wave splitting: A tool for volcanic activity monitoring"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Hakone volcano, located at the northern tip of the Izu‐Mariana volcanic arc, Japan, has a large caldera structure containing numerous volcanic hot springs. Earthquake swarms have occurred repeatedly within the caldera. The largest seismic swarm since the commencement of modern seismic observations (in 1968) occurred in 2001. We investigated the anisotropic structure of Hakone volcano based on <jats:italic>S</jats:italic> wave splitting analysis and found spatiotemporal changes in the splitting parameters accompanying the seismic swarm activity. Depth‐dependent anisotropic structures are clearly observed. A highly anisotropic layer with a thickness of ~1.5 km is located beneath the Koziri (KZR) and Kozukayama (KZY) stations. The anisotropic intensity in the region reaches a maximum of 6–7% at a depth of 1 km and decreases markedly to less than 1% at a depth of 2 km. The anisotropic intensity beneath Komagatake station (KOM) decreases gradually from a maximum of 6% at the surface to 0% at a depth of 5 km but is still greater than 2.5% at a depth of 3 km. At KZY, the anisotropic intensity along a travel path of which the back azimuth was the south decreased noticeably after the 2001 seismic swarm activity. During the swarm activity, tilt meters and GPS recorded the crustal deformation. The observed decrease in anisotropic intensity is presumed to be caused by the closing of microcracks by stress changes accompanying crustal deformation near the travel path.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420845751155148160","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"80416081"},{"@type":"NRID","@value":"1000080416081"},{"@type":"KAKEN_RESEARCHERS","@value":"40422456"},{"@type":"NRID","@value":"1000040422456"},{"@type":"NRID","@value":"9000254263278"},{"@type":"NRID","@value":"9000406318405"},{"@type":"NRID","@value":"9000394467381"},{"@type":"NRID","@value":"9000410950109"},{"@type":"NRID","@value":"9000387900865"},{"@type":"NRID","@value":"9000381499083"},{"@type":"NRID","@value":"9000301713857"},{"@type":"NRID","@value":"9000018462719"},{"@type":"NRID","@value":"9000258274908"},{"@type":"NRID","@value":"9000356569430"},{"@type":"NRID","@value":"9000397647110"},{"@type":"NRID","@value":"9000325470258"},{"@type":"NRID","@value":"9000345350357"},{"@type":"NRID","@value":"9000254740987"},{"@type":"NRID","@value":"9000258275056"},{"@type":"NRID","@value":"9000241490634"},{"@type":"NRID","@value":"9000006854406"},{"@type":"NRID","@value":"9000361682636"},{"@type":"NRID","@value":"9000375860102"},{"@type":"NRID","@value":"9000254263059"},{"@type":"NRID","@value":"9000376947740"},{"@type":"NRID","@value":"9000254720957"},{"@type":"NRID","@value":"9000333083198"},{"@type":"NRID","@value":"9000015996543"},{"@type":"NRID","@value":"9000001755233"},{"@type":"NRID","@value":"9000318561823"},{"@type":"NRID","@value":"9000001755344"},{"@type":"NRID","@value":"9000404489569"},{"@type":"NRID","@value":"9000006546624"},{"@type":"NRID","@value":"9000380980896"},{"@type":"NRID","@value":"9000241662370"},{"@type":"NRID","@value":"9000263038403"},{"@type":"NRID","@value":"9000413582435"},{"@type":"NRID","@value":"9000299521046"},{"@type":"NRID","@value":"9000410950093"},{"@type":"NRID","@value":"9000301720202"},{"@type":"NRID","@value":"9000408492538"},{"@type":"NRID","@value":"9000399766616"},{"@type":"NRID","@value":"9000001189882"},{"@type":"NRID","@value":"9000241825517"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/hryou"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0133240"}],"foaf:name":[{"@value":"Ryou Honda"}],"jpcoar:affiliationName":[{"@value":"Hot Springs Research Institute of Kanagawa Prefecture  Odawara Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943833837952","@type":"Researcher","foaf:name":[{"@value":"Yohei Yukutake"}],"jpcoar:affiliationName":[{"@value":"Hot Springs Research Institute of Kanagawa Prefecture  Odawara Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943833837955","@type":"Researcher","foaf:name":[{"@value":"Akio Yoshida"}],"jpcoar:affiliationName":[{"@value":"Center for Integrated Research and Education of Natural Hazards Shizuoka University  Shizuoka Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943833837953","@type":"Researcher","foaf:name":[{"@value":"Masatake Harada"}],"jpcoar:affiliationName":[{"@value":"Hot Springs Research Institute of Kanagawa Prefecture  Odawara Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943833837954","@type":"Researcher","foaf:name":[{"@value":"Kazuki Miyaoka"}],"jpcoar:affiliationName":[{"@value":"Hot Springs Research Institute of Kanagawa Prefecture  Odawara Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943833837956","@type":"Researcher","foaf:name":[{"@value":"Mikio Satomura"}],"jpcoar:affiliationName":[{"@value":"Hot Springs Research Institute of Kanagawa Prefecture  Odawara Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"21699313"},{"@type":"EISSN","@value":"21699356"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2014-09","prism:volume":"119","prism:number":"9","prism:startingPage":"7043","prism:endingPage":"7057"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2014JB010978"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2014JB010978"}],"createdAt":"2014-07-31","modifiedAt":"2023-09-02","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360290617623690880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic Constraint on the Fluid‐Bearing Systems Feeding Hakone Volcano, Central Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567179756104704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A magma‐hydrothermal system beneath Hakone volcano, central Japan, revealed by highly resolved velocity structures"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584340530835712","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Anisotropic seismic velocity variations in response to different orientations of tidal deformations"}]},{"@id":"https://cir.nii.ac.jp/crid/1361418518486045824","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Magma Reservoir and Magmatic Feeding System Beneath Hakone Volcano, Central Japan, Revealed by Highly Resolved Velocity Structure"}]},{"@id":"https://cir.nii.ac.jp/crid/1390574411905742848","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Fracture Structures in and Around Hakone Volcano Revealed by Dense Seismic Observations"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588892082785792","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Chronology of the 2015 eruption of Hakone volcano, Japan : geological background, mechanism of volcanic unrest and disaster mitigation measures during the crisis"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842036215936","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Precursory tilt changes associated with a phreatic eruption of the Hakone volcano and the corresponding source model"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317073003008","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Stress state in the upper crust around the source region of the 1891 Nobi earthquake through shear wave polarization anisotropy"}]},{"@id":"https://cir.nii.ac.jp/crid/2051996266842855808","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Determination of temporal changes in seismic velocity caused by volcanic activity in and around Hakone volcano, central Japan, using ambient seismic noise records"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/2014jb010978"},{"@type":"OPENAIRE","@value":"doi_dedup___::b5f9212556f80204aaf40b1ecee94955"},{"@type":"CROSSREF","@value":"10.1186/s40623-018-0844-2_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1186/s40623-015-0220-4_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1029/2020jb020341_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1002/2014jb011856_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1186/s40623-018-0887-4_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1093/gji/ggad386_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1186/s40645-016-0106-5_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.20965/jdr.2022.p0663_references_DOI_QqeQd7THCyAvSyryAJcgY3djgFm"},{"@type":"CROSSREF","@value":"10.1029/2020jb021236_references_DOI_2MD3OgVEGJHJJ3P8wdMYe5Z2Puo"}]}