{"@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/1363670320654849280.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.pepi.2005.09.005"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0031920105002190?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0031920105002190?httpAccept=text/plain"}}],"dc:title":[{"@value":"Palaeointensities of the Auckland geomagnetic excursions by the LTD-DHT Shaw method"}],"description":[{"notation":[{"@value":"Abstract   We report new palaeointensity results concerning the Auckland geomagnetic excursions using the double heating technique of the Shaw method with low temperature demagnetisation (LTD-DHT Shaw method). The excursional palaeodirections recorded in six volcanoes of the Auckland volcanic field, New Zealand, have been classified into three groups: north-down (ND), west-up (WU) and south-up (SU) directions. In the present study, five to six consistent palaeointensities have been obtained from each of five volcanoes recording the Auckland geomagnetic excursions. The Wiri (27 ka), Crater Hill and Puketutu volcanoes (ND group) yielded mean palaeointensities of 10.6 ± 1.2 (1σ), 11.8 ± 2.8 and 11.1 ± 0.4 μT, respectively. The Hampton Park volcano (55 ka; WU group) gave 9.5 ± 1.2 μT while the McLennan Hills volcano (SU group) gave 2.5 ± 0.5 μT. It is notable that consistent palaeointensities have been obtained from the three different volcanoes which have almost the same palaeodirections (ND group), possibly supporting the reliability of the palaeointensity data. These five palaeointensities for the Auckland geomagnetic excursions correspond to virtual dipole moments (VDMs) of 0.6–2.1 × 1022 A m2, whereas three mean palaeointensities obtained from the Auckland volcanoes having non-excursional palaeodirections are 13.1–40.0 μT giving stronger VDMs of 2.1–6.9 × 1022 A m2. These results suggest that the dipole component of the geomagnetic field reduced to about 2 × 1022 A m2 or less during the Auckland geomagnetic excursions."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670320654849283","@type":"Researcher","foaf:name":[{"@value":"Nobutatsu Mochizuki"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320654849281","@type":"Researcher","foaf:name":[{"@value":"Hideo Tsunakawa"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320654849284","@type":"Researcher","foaf:name":[{"@value":"Hidetoshi Shibuya"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320654849280","@type":"Researcher","foaf:name":[{"@value":"John Cassidy"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320654849282","@type":"Researcher","foaf:name":[{"@value":"Ian E.M. Smith"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00319201"}],"prism:publicationName":[{"@value":"Physics of the Earth and Planetary Interiors"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2006-02","prism:volume":"154","prism:number":"2","prism:startingPage":"168","prism:endingPage":"179"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0031920105002190?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0031920105002190?httpAccept=text/plain"}],"createdAt":"2005-12-02","modifiedAt":"2019-01-20","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004232425618560","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Instantaneous record of the geomagnetic field direction of various facies from pyroclastic flow deposits: Tests for consistency in paleomagnetic directions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232425672704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Low absolute paleointensity during Late Miocene Noma excursion of the Earth’s magnetic field"}]},{"@id":"https://cir.nii.ac.jp/crid/1360290617725146112","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Construction of new archaeointensity reference curve for East Asia from 200 CE to 1100 CE"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182379019264","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Multi-level consistency tests in paleointensity determinations from the welded tuffs of the Aso pyroclastic-flow deposits"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567183240663040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Paleointensity variation across the Matuyama-Brunhes polarity transition: Observations from lavas at Punaruu Valley, Tahiti"}]},{"@id":"https://cir.nii.ac.jp/crid/1360576118689031936","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A tephra-based approach to calibrating relative geomagnetic paleointensity stacks to absolute values"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580229796028800","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Absolute Paleointensity Experiments on Aged Thermoremanent Magnetization: Assessment of Reliability of the Tsunakawa‐Shaw and Other Methods With Implications for “Fragile” Curvature"}]},{"@id":"https://cir.nii.ac.jp/crid/1881146593090218880","@type":"Dataset","relationType":["isSupplementTo","documents"],"jpcoar:relatedTitle":[{"@value":"Palaeointensities of the Auckland geomagnetic excursions by the LTD-DHT Shaw method (Dataset)"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791989630336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Archeointensity estimates of a tenth-century kiln : first application of the Tsunakawa–Shaw paleointensity method to archeological relics"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1016/j.pepi.2005.09.005"},{"@type":"OPENAIRE","@value":"doi_dedup___::425355ecfcfc8622b37e538d3f026765"},{"@type":"CROSSREF","@value":"10.1186/s40623-018-0841-5_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1016/j.pepi.2020.106596_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1029/2010jb008093_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1016/j.pepi.2018.12.006_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1016/j.pepi.2014.08.001_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1016/j.epsl.2021.117119_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1029/2022gc010391_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"},{"@type":"CROSSREF","@value":"10.1016/j.pepi.2013.05.001_references_DOI_WO8sYPodqiQ8ROaVKo1WxSEny63"}]}