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dc.contributor.authorSwain, Christopher
dc.contributor.authorKirby, Jonathan
dc.date.accessioned2017-01-30T15:25:43Z
dc.date.available2017-01-30T15:25:43Z
dc.date.created2009-03-05T00:56:55Z
dc.date.issued2003
dc.identifier.citationSwain, Christopher and Kirby, Jonathan. 2003. The effect of 'noise' on estimates of the elastic thickness of the continental lithosphere by the coherence method. Geophysical Research Letters. 30 (11): pp. 1574-1578.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/46201
dc.identifier.doi10.1029/2003GL017070
dc.description.abstract

We model the lithosphere as a uniform elastic plate overlying an inviscid fluid and loaded with both surface and subsurface fractal loads to generate synthetic topography and gravity data. To simulate data having low (topographic) signal to (gravity) noise ratio we use an algebraically larger exponent for the subsurface load in the spectral synthesis fractal algorithm.The gravity power spectrum then decays less rapidly than that of topography, the spectra resembling those for central Australia. We find that the coherence method using multitaper spectral estimation yields significant underestimates of plate thickness for both low and normal signal-to-noise ratio data, unless the data window is larger than several times the true flexural wavelength. We quantify this bias for the parameters used here and apply it as a correction to an effective elastic thickness estimate for central Australia, obtaining a value of 115 25 km.

dc.publisherAmerican Geophysical Union
dc.subjectelastic thickness
dc.subjectlithosphere
dc.subjectrheology
dc.subjectmantle
dc.subjectcrust
dc.subjectContinental tectonics
dc.titleThe effect of ‘noise’ on estimates of the elastic thickness of the continental lithosphere by the coherence method
dc.typeJournal Article
dcterms.source.volume30
dcterms.source.number11
dcterms.source.startPage1574
dcterms.source.endPage1578
dcterms.source.issn00948276
dcterms.source.titleGeophysical Research Letters
curtin.note

Copyright © 2003 American Geophysical Union.

curtin.note

Publisher's Citation: Swain, C. J., and J. F. Kirby (2003), The effect of ‘noise’ on estimates of the elastic thickness of the continental lithosphere by the coherence method, Geophysical Research Letters, Vol. 30 (11), 1574, doi: 10.1029/2003GL017070.

curtin.accessStatusOpen access
curtin.facultyDepartment of Spatial Sciences
curtin.facultyFaculty of Science and Engineering
curtin.facultyThe Western Australian School of Mines


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