{"@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/1361699996344010112.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2001jb000990"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001JB000990"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JB000990"}}],"dc:title":[{"@value":"Beyond magnetotelluric decomposition: Induction, current channeling, and magnetotelluric phases over 90°"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>This paper presents a method to examine strong current channeling affecting the magnetotelluric (MT) impedances, going beyond existing tensor decomposition schemes. The method allows recognition of elongated conductors in the crust and is also useful for a qualitative recognition of general three‐dimensional (3‐D) high‐conductivity anomalies. This has been tested with synthetic data from 3‐D and 2‐D anisotropic models. The current channeling analysis has been applied to MT data collected in the Andean subduction zone, where the Atacama megafault system close to the Pacific Ocean and oriented subparallel to the coast line is located. The analysis suggests the presence of vertical dike‐like conductors of limited lateral extent along the fault zone. Several MT sites distributed along the faults have impedance phases of the electric field tangential to the local azimuth far exceeding 90° at longer periods. We are able to explain this as being the result of strong current channeling producing magnetic distortion due to an electromagnetic coupling between the conductive ocean and the continental elongated conductors.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381699996344009984","@type":"Researcher","foaf:name":[{"@value":"Pamela Lezaeta"}],"jpcoar:affiliationName":[{"@value":"Fachrichtung Geophysik Freie Universität Berlin  Berlin Germany"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699996344009985","@type":"Researcher","foaf:name":[{"@value":"Volker Haak"}],"jpcoar:affiliationName":[{"@value":"GeoForschungsZentrum Potsdam  Potsdam Germany"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2003-06","prism:volume":"108","prism:number":"B6","prism:startingPage":"2305"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001JB000990"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JB000990"}],"createdAt":"2003-06-20","modifiedAt":"2023-10-14","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001338420421248","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Three-dimensional resistivity structure and magma plumbing system of the Kirishima volcanoes as inferred from broad-band magnetotelluric data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285707500072704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Three-dimensional resistivity modelling of a seismogenic area in an oblique subduction zone in the western Kurile arc: Constraints from anomalous magnetotelluric phases"}]},{"@id":"https://cir.nii.ac.jp/crid/2050307417117558784","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Validity of the dispersion relations in magnetotellurics : Part I—theory"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588891962949120","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Use of ssq rotational invariant of magnetotelluric impedances for estimating informative properties for galvanic distortion"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2001jb000990"},{"@type":"CROSSREF","@value":"10.1002/2013jb010682_references_DOI_JOiJXjgcIuj9SetWI768rRV97fz"},{"@type":"CROSSREF","@value":"10.1016/j.tecto.2013.05.020_references_DOI_JOiJXjgcIuj9SetWI768rRV97fz"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0665-8_references_DOI_JOiJXjgcIuj9SetWI768rRV97fz"},{"@type":"CROSSREF","@value":"10.1186/s40623-020-1133-4_references_DOI_JOiJXjgcIuj9SetWI768rRV97fz"}]}