{"@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/1363670320073896448.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1186/bf03352027"}},{"identifier":{"@type":"URI","@value":"https://link.springer.com/content/pdf/10.1186/BF03352027.pdf"}},{"identifier":{"@type":"URI","@value":"https://link.springer.com/article/10.1186/BF03352027/fulltext.html"}},{"identifier":{"@type":"URI","@value":"http://link.springer.com/content/pdf/10.1186/BF03352027"}}],"dc:title":[{"@value":"Detecting horizontal gradient of sound speed in ocean"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title>\n          <jats:p>We propose a new approach to monitor the horizontal gradient of sound speed in ocean for its correction on seafloor positioning using the GPS/acoustic technique. The new method requires five seafloor transponders to solve five parameters: <jats:italic>δx</jats:italic>, horizontal position of a transponder array; <jats:italic>δt</jats:italic>, a common delay in traveltimes due to the stratified component of sound speed; <jats:bold>∇</jats:bold>\n            <jats:sub>t</jats:sub>, the gradient of traveltime delays among the transponders associated with the sound speed gradient. We also numerically evaluate the geometrical strength of the five transponders’ layout and observation point to avoid possible trade-off among the parameters.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670320073896448","@type":"Researcher","foaf:name":[{"@value":"Motoyuki Kido"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"18805981"}],"prism:publicationName":[{"@value":"Earth, Planets and Space"}],"dc:publisher":[{"@value":"Springer Science and Business Media LLC"}],"prism:publicationDate":"2007-08","prism:volume":"59","prism:number":"8","prism:startingPage":"e33","prism:endingPage":"e36"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0/","https://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://link.springer.com/content/pdf/10.1186/BF03352027.pdf"},{"@id":"https://link.springer.com/article/10.1186/BF03352027/fulltext.html"},{"@id":"http://link.springer.com/content/pdf/10.1186/BF03352027"}],"createdAt":"2014-08-15","modifiedAt":"2021-09-02","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002214709321472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Progress in the Project for Development of GPS/Acoustic Technique Over the Last 4 Years"}]},{"@id":"https://cir.nii.ac.jp/crid/1360005518171998976","@type":"Article","resourceType":"学術雑誌論文(journal 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