{"@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/1362262943458089344.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.epsl.2017.08.004"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0012821X17304430?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0012821X17304430?httpAccept=text/plain"}}],"dc:title":[{"@value":"Structural variation of the oceanic Moho in the Pacific plate revealed by active-source seismic data"}],"description":[{"notation":[{"@value":"Abstract   The characteristics of the oceanic Moho are known to depend on various factors, such as seafloor spreading rate, crustal age, and accretionary processes at a ridge. However, the effect of local magmatic activities on the seismic signature of the Moho is poorly understood. Here an active-source reflection and refraction survey is used to investigate crustal structure and Moho characteristics along a >1000-km-long profile southeast of the Shatsky Rise in a Pacific Ocean basin formed from the Late Jurassic to Early Cretaceous and spanning the onset of Shatsky Rise volcanism. Although the seismic velocity structure estimated from the refraction data showed typical characteristics of the oceanic crust of the old Pacific plate, the appearance of the Moho reflections was spatially variable. We observed clear Moho reflections such as those to be expected where the spreading rate is fast to intermediate only at the southwestern end of the profile, whereas Moho reflections were diffuse, weak, or absent along other parts of the profile. The poor Moho reflections can be explained by the presence of a thick crust–mantle transition layer, which is temporally coincident with the formation of the Shatsky Rise. We inferred that the crust–mantle transition layer was formed by changes in on-axis accretion process or modification of the primary Moho by off-axis magmatism, induced by magmatic activity of the Shatsky Rise."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382262943458089345","@type":"Researcher","foaf:name":[{"@value":"Akane Ohira"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943458089344","@type":"Researcher","foaf:name":[{"@value":"Shuichi Kodaira"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943458089348","@type":"Researcher","foaf:name":[{"@value":"Yasuyuki Nakamura"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943458089346","@type":"Researcher","foaf:name":[{"@value":"Gou Fujie"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943458089347","@type":"Researcher","foaf:name":[{"@value":"Ryuta Arai"}]},{"@id":"https://cir.nii.ac.jp/crid/1382262943458089349","@type":"Researcher","foaf:name":[{"@value":"Seiichi Miura"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"0012821X"}],"prism:publicationName":[{"@value":"Earth and Planetary Science Letters"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2017-10","prism:volume":"476","prism:startingPage":"111","prism:endingPage":"121"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/","https://www.elsevier.com/legal/tdmrep-license"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0012821X17304430?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0012821X17304430?httpAccept=text/plain"}],"createdAt":"2017-09-02","modifiedAt":"2025-09-15","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050012570393904000","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Electrical conductivity of old oceanic mantle in the northwestern Pacific I: 1-D profiles suggesting differences in thermal structure not predictable from a plate cooling model"},{"@value":"Electrical conductivity of old oceanic mantle in the northwestern Pacific I: 1-D profiles suggesting differences in thermal structure not predictable by a plate cooling model"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233291788544","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic Structure of the Oceanic Crust Around Petit‐Spot Volcanoes in the Outer‐Rise Region of the Japan Trench"}]},{"@id":"https://cir.nii.ac.jp/crid/1360009142646703744","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Two-stages of plume tail volcanism formed Ojin Rise Seamounts adjoining Shatsky Rise"}]},{"@id":"https://cir.nii.ac.jp/crid/1360013168841154432","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Changes in elastic wave velocity during brittle deformation of gabbro and peridotite: Implications for oceanic Moho reflectivity"}]},{"@id":"https://cir.nii.ac.jp/crid/1360017282213262080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The nature of the <scp>Moho</scp> beneath fast‐spreading centers: Evidence from the <scp>Pacific</scp> plate and <scp>Oman</scp> ophiolite"}]},{"@id":"https://cir.nii.ac.jp/crid/1390289475878899584","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Crucial Scientific Issues in Earth Science Revealed Only by Mantle Drilling: Understanding the Current State of the Oceanic Plates of a Life-bearing Planet"},{"@language":"ja","@value":"マントル掘削でのみ解明される地球科学問題"},{"@value":"マントル掘削でのみ解明される地球科学問題 : 生命惑星海洋プレートの今を理解する"},{"@language":"ja-Kana","@value":"マントル クッサク デ ノミ カイメイ サレル チキュウ カガク モンダイ : セイメイ ワクセイ カイヨウ プレート ノ イマ オ リカイ スル"}]},{"@id":"https://cir.nii.ac.jp/crid/1390588445838842752","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"ワジ・フィズ地域におけるサマイル・オフィオライトの初のミュオグラフィ観測"},{"@language":"en","@value":"First Muography of Samail Ophiolite at Wadi Fizh"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714792001112704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Near-ridge-axis volcanism affected by hotspot : insights from effective elastic thickness and topography of the Ojin Rise Seamounts, east of Shatsky Rise in the northwest Pacific 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