{"@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/1362825895713554688.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1190/geo2010-0368.1"}},{"identifier":{"@type":"URI","@value":"https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/76/6/I59/3223005/geo2010-0368.pdf"}}],"dc:title":[{"@value":"Window constrained inversion of gravity gradient tensor data using dike and contact models"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>ABSTRACT</jats:title>\n                  <jats:p>We have developed a constrained inversion technique for interpretation of gravity gradient tensor data. For dike and contact models striking in the y-direction, the measured gxz and gzz components can be jointly inverted for estimating the model parameters horizontal position, depth to the top, thickness, dip angle, and density contrast. For a given measurement point, the strike direction of the gravity gradient tensor caused by a quasi 2D structure can be estimated from the eigenvector corresponding to the smallest eigenvalue. Then, the measured components can be transformed into the strike coordinate system. It is assumed that the maximum of gzz is approximately located above the causative body. In the case of gridded data, all measurement points enclosed by a square window centered at the maximum of gzz are used to estimate the source parameters. The number of data points used for estimating source parameters is increased by increasing the size of the window. Solutions with the smallest data-fit error were selected as the most reliable solutions from any set of solutions. The gravity gradient tensor data are deconvolved using both dike and contact models within a set of square windows. Then, the model with the smallest data-fit error is chosen as the best model. We studied the effect of random noise and interfering sources using synthetic examples. The method is applied to a gravity gradient tensor data set from the Vredefort impact structure in South Africa. In this particular case, the dike model provides solutions with smaller data-fit errors than the contact model. This supports the idea that in the central dome area there is a predominance of vertical structures related to the formation of the transient crater and subsequent central uplift of the lower and middle crustal material.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825895713554688","@type":"Researcher","foaf:name":[{"@value":"Majid Beiki"}],"jpcoar:affiliationName":[{"@value":"Uppsala University 1 Formerly , Department of Earth Sciences, Uppsala, ; currently , North Ryde, NSW, . E-mail: majid.beiki@csiro.au ."},{"@value":"CSIRO Earth Science and Resource Engineering 1 Formerly , Department of Earth Sciences, Uppsala, ; currently , North Ryde, NSW, . E-mail: majid.beiki@csiro.au ."}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895713554689","@type":"Researcher","foaf:name":[{"@value":"Laust B. Pedersen"}],"jpcoar:affiliationName":[{"@value":"Uppsala University 2 , Department of Earth Sciences, Uppsala, . E-mail: laust.pedersen@geo.uu.se ."}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"19422156"},{"@type":"PISSN","@value":"00168033"}],"prism:publicationName":[{"@value":"Geophysics"}],"dc:publisher":[{"@value":"Society of Exploration Geophysicists"}],"prism:publicationDate":"2011-11-01","prism:volume":"76","prism:number":"6","prism:startingPage":"I59","prism:endingPage":"I72"},"reviewed":"false","url":[{"@id":"https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/76/6/I59/3223005/geo2010-0368.pdf"}],"createdAt":"2012-01-03","modifiedAt":"2025-12-11","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360848665278689920","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Inconsistent Structure and Motion of the Eastern Median Tectonic Line, Southwest Japan, during the Quaternary"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681471822848","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"重力勾配テンソルの固有ベクトルを用いた断層あるいは構造境界の傾斜角の推定"},{"@language":"en","@value":"Estimation of dip angle of fault or structural boundary by eigenvectors of gravity gradient tensors"},{"@language":"ja-Kana","@value":"ジュウリョク コウバイ テンソル ノ コユウ ベクトル オ モチイタ ダンソウ アルイハ コウゾウ キョウカイ ノ ケイシャカク ノ スイテイ"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588891962970624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Eigenvector of gravity gradient tensor for estimating fault dips considering fault type"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1190/geo2010-0368.1"},{"@type":"CROSSREF","@value":"10.1186/s40645-017-0130-0_references_DOI_J0eEFq002UTwYNDdtXp3b8Fgqht"},{"@type":"CROSSREF","@value":"10.3124/segj.68.277_references_DOI_J0eEFq002UTwYNDdtXp3b8Fgqht"},{"@type":"CROSSREF","@value":"10.5772/67964_references_DOI_J0eEFq002UTwYNDdtXp3b8Fgqht"}]}