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dc.contributor.authorO'Keefe, Yvetteen_US
dc.contributor.authorThiel, Daviden_US
dc.contributor.authorO'Keefe, Stevenen_US
dc.contributor.editorWilliam J Emeryen_US
dc.date.accessioned2017-05-03T12:23:34Z
dc.date.available2017-05-03T12:23:34Z
dc.date.issued2005en_US
dc.date.modified2009-11-30T05:25:11Z
dc.identifier.issn1545598Xen_US
dc.identifier.doi10.1109/LGRS.2004.843206en_AU
dc.identifier.urihttp://hdl.handle.net/10072/4307
dc.description.abstractAttempts to use discrete sferics for low frequency impedance mapping have relied on Fourier analysis to derive time independent frequency profiles of the earth. A one dimensional transmission line model of the earth above a perfectly conducting layer is used to demonstrate that the impedance is time dependent. Assuming a sferic type transient for the applied magnetic field, the electric field is changed significantly corresponding to the time of flight of the radiation in the lossy earth. In an attempt to maintain this timing information and its' link with the frequency components, the wavelet transform was implemented to analyse the data. The associated surface impedance may be approximated as the input impedance of the earth during excitation but reverts to the impedance of free space once the source field returns to zero.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.format.extent299899 bytes
dc.format.extent18354 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherInstitute of Electrical and Electronic Engineersen_US
dc.publisher.placeUSen_US
dc.publisher.urihttp://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=8859en_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom104en_US
dc.relation.ispartofpageto107en_US
dc.relation.ispartofissue2en_US
dc.relation.ispartofjournalIEEE Geoscience and Remote Sensing Lettersen_US
dc.relation.ispartofvolume2en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode260203en_US
dc.titleTime-Dependent Surface Impedance from Sfericsen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Engineeringen_US
gro.rights.copyrightCopyright 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_AU
gro.date.issued2005
gro.hasfulltextFull Text


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