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dc.contributor.authorAmos, Matthew
dc.contributor.authorFeatherstone, Will
dc.contributor.authorBrett, J.
dc.contributor.editorChristopher Jekeli
dc.contributor.editorLuisa Bastos
dc.contributor.editorJoana Fernandes
dc.identifier.citationAmos, Matthew and Featherstone, Will and Brett, J. 2005. Crossover Adjustment of New Zealand Marine Gravity Data, and Comparisons with Satellite Altimetry and Global Geopotential Models, in Christopher Jekeli, Luisa Bastos, Joana Fernandes (ed), GGSM 2004: IAG International Symposium, Aug 30 2004, pp. 266-271. Porto, Portugal: Springer.

This paper summarises the crossover adjustment of approximately 90,000-line-km of ship-track gravity observations around New Zealand. The adjustment reduced the standard deviation of the ~106 crossovers from ~2.0 mgal to ~0.3 mgal. These data were then used to assess four different grids of satellite-altimeter-derived gravity anomalies. The KMS02 altimeter grid was selected for use around New Zealand as it gave a better fit to the coastal ship-track data. Least-squares collocation was then used to 'drape' the altimetry onto the crossover-adjusted ship-tracks to counter the well-known problems with satellite altimeter data near the coast. The precision of this merged ship-altimeter gravity dataset is estimated to be 3.5 mgal.

dc.subjectcrossover adjustment
dc.subjectsatellite altimetry
dc.subjectgeopotential model
dc.subjectmarine gravimetry
dc.titleCrossover Adjustment of New Zealand Marine Gravity Data, and Comparisons with Satellite Altimetry and Global Geopotential Models
dc.typeConference Paper
dcterms.source.titleGravity, Geoid and Space Missions
dcterms.source.seriesGravity, Geoid and Space Missions
dcterms.source.conferenceGGSM 2004: IAG International Symposium
dcterms.source.conference-start-dateAug 30 2004
dcterms.source.conferencelocationPorto, Portugal
dcterms.source.placeBerlin, Heidelberg, New York

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curtin.accessStatusFulltext not available
curtin.facultyDepartment of Spatial Sciences
curtin.facultyFaculty of Science and Engineering
curtin.facultyWA School of Mines

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