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(abstract) Altimeter Calibration and Geophysical Monitoring from Collocated Measurements at the Harvest Oil Platform

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dc.contributor.author Haines, B. J. en_US
dc.contributor.author Christensen, E. J. en_US
dc.contributor.author Norman, R. A. en_US
dc.contributor.author Parke, M. E. en_US
dc.contributor.author Born, G. H. en_US
dc.contributor.author Gill, S. K. en_US
dc.date.accessioned 2004-09-30T22:25:40Z
dc.date.available 2004-09-30T22:25:40Z
dc.date.issued 1996-07-23 en_US
dc.identifier.citation Brisbane, Australia en_US
dc.identifier.clearanceno 96-1065 en_US
dc.identifier.uri http://hdl.handle.net/2014/26049
dc.description.abstract Prior to the launch of TOPEX/ Poseidon in August 1992, NASA established its primary in situ verification site on the Harvest oil platform located in the Pacific Ocean off the coast of central California. Data from a suite of geodetic and oceanographic instruments attached to the platform have been combined to yield a precise record of absolute sea level simce the beginning of the mission. Critical to the computation of this geocentric sea level record is the precise determination of the platform geodetic height and the vertical velocity in the global terrestrial reference frame.We compare estimates of the platform height and vertical velocity from global positioning system (GPS) data alone and from a combination of GPS and satellite laser ranging (SLR) information. Current estimates suggest the platform is subsiding at a rate of about 8 mm per year. This height information is combined with in situ tide gauge measurements of sea level relative to a platform reference mark in order to produce a continuous record of the local geocentric sea height. en_US
dc.format.extent 142523 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject.other Pacific Ocean geodetics oceanographic geocentric sea level absolute sea level GPS en_US
dc.title (abstract) Altimeter Calibration and Geophysical Monitoring from Collocated Measurements at the Harvest Oil Platform en_US


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