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dc.contributor.authorMcCubbine, J.C.
dc.contributor.authorStagpoole, V.
dc.contributor.authorCaratori Tontini, F.
dc.contributor.authorFeatherstone, Will
dc.contributor.authorGarthwaite, M.C.
dc.contributor.authorBrown, N.J.
dc.contributor.authorAmos, M.J.
dc.contributor.authorFukuda, Y.
dc.contributor.authorKazama, T.
dc.contributor.authorTakiguchi, H.
dc.contributor.authorNishijima, J.
dc.date.accessioned2020-11-08T12:17:30Z
dc.date.available2020-11-08T12:17:30Z
dc.date.issued2020
dc.identifier.citationMcCubbine, J.C. and Stagpoole, V. and Caratori Tontini, F. and Featherstone, W.E. and Garthwaite, M.C. and Brown, N.J. and Amos, M.J. et al. 2020. Evaluating temporal stability of the New Zealand quasigeoid following the 2016 Kaikōura earthquake using satellite radar remote sensing. Geophysical Journal International. 220 (3): pp. 1917-1927.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/81640
dc.identifier.doi10.1093/gji/ggz536
dc.description.abstract

Quasigeoid models can be determined from surface gravity anomalies, so are sensitive to changes in the shape of the topography as well as changes in gravity. Here we present results of forward modelling gravity/quasigeoid changes from synthetic aperture radar data following the 2016 Mw 7.8 Kaikōura earthquake with land uplift of up to 10 m. We assess the impact of the topographic deformation on the reference surface of the New Zealand vertical datum in lieu of costly field gravity field measurements. The most significant modelled gravity and quasigeoid changes are-2.9 mGal and 5-7 mm, respectively. We compare our forward modelled gravity signal to terrestrial gravity observation data and show that differences between the data sets have a standard deviation of ±0.1 mGal. The largest modelled change in the quasigeoid is an order of magnitude smaller than the 57.7 mm estimated precision of the most recently computed NZGeoid model over the Kaikōura region. Modelled quasigeoid changes implied by this particular deformation event are not statistically significant with respect to estimated precision of the New Zealand quasigeoid model.

dc.languageEnglish
dc.publisherOXFORD UNIV PRESS
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectGeochemistry & Geophysics
dc.subjectGeopotential theory
dc.subjectTime variable gravity
dc.subjectNew Zealand
dc.subjectGEOID HEIGHTS
dc.subjectMODEL
dc.titleEvaluating temporal stability of the New Zealand quasigeoid following the 2016 Kaikōura earthquake using satellite radar remote sensing
dc.typeJournal Article
dcterms.source.volume220
dcterms.source.number3
dcterms.source.startPage1917
dcterms.source.endPage1927
dcterms.source.issn0956-540X
dcterms.source.titleGeophysical Journal International
dc.date.updated2020-11-08T12:17:26Z
curtin.note

This article has been accepted for publication in Geophysical Journal International ©: The Author(s) 2019. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidFeatherstone, Will [0000-0001-9644-4535]
curtin.contributor.researcheridFeatherstone, Will [B-7955-2010]
dcterms.source.eissn1365-246X
curtin.contributor.scopusauthoridFeatherstone, Will [7005963784]


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