scholarly journals Simultaneous Estimation of the Gravity Field and Sea Surface Topography From Satellite Altimeter Data By Least-Squares Collocation

1991 ◽  
Vol 104 (2) ◽  
pp. 307-317 ◽  
Author(s):  
Per Knudsen
Keyword(s):  
Least Squares ◽  
Surface Topography ◽  
Gravity Field ◽  
Sea Surface ◽  
Altimeter Data ◽  
Simultaneous Estimation ◽  
Least Squares Collocation ◽  
Satellite Altimeter ◽  
Sea Surface Topography ◽  
Satellite Altimeter Data

scholarly journals Dynamic sea surface topography, gravity, and improved orbit accuracies from the direct evaluation of Seasat altimeter data

1990 ◽  
Vol 95 (C8) ◽  
pp. 13129 ◽  
Author(s):  
J. G. Marsh ◽  
C. J. Koblinsky ◽  
F. Lerch ◽  
S. M. Klosko ◽  
J. W. Robbins ◽  
...  
Keyword(s):  
Surface Topography ◽  
Sea Surface ◽  
Altimeter Data ◽  
Direct Evaluation ◽  
Sea Surface Topography

scholarly journals Evaluation of W0 in Canada using tide gauges and GOCE gravity field models

2012 ◽  
Vol 2 (4) ◽  
pp. 290-301 ◽  
Author(s):  
T. Hayden ◽  
E. Rangelova ◽  
M. G. Sideris ◽  
M. Véronneau
Keyword(s):  
Surface Topography ◽  
Gravity Field ◽  
Ocean Circulation ◽  
Sea Water ◽  
Tide Gauge ◽  
Sea Surface ◽  
The Arctic ◽  
Tide Gauges ◽  
Sea Surface Topography ◽  
Vertical Datum

AbstractThe existing Canadian Geodetic Vertical Datum of 1928 (CGVD28) does not meet the needs of the modern user in terms of accuracy and accessibility. As a result, Canada plans to implement a geoid-based and global navigation satellite system (GNSS)-accessible vertical datum by 2013. One of the primary concerns in realizing this new vertical datum is to determine a W0 value that will represent the potential of the zero height surface. The objective of this study is to evaluate W0 by averaging the potential of points on the mean sea water surface utilizing tide gauge recordings and gravity field and steady-state ocean circulation explorer (GOCE)-based global geopotential models. In order to assess the performance of the GOCE-based models for the computation of W0, the models are extended with the high resolution gravitational model EGM2008. Regional gravimetric geoid models are also used for the estimation of W0. Additionally, local sea surface topography models are utilized in order to validate the W0 results at the tide gauges. Excluding the Arctic coast, the W0 values obtained from both tide gauges and oceanic sea surface topography models are not statistically different from the International Earth Rotation and Reference Systems Service (IERS) 2010 global conventional value 62636856.00 m2/s2.

scholarly journals Jason continuity of services: continuing the Jason altimeter data records as Copernicus Sentinel-6

Ocean Science ◽  
2016 ◽  
Vol 12 (2) ◽  
pp. 471-479 ◽  
Author(s):  
Remko Scharroo ◽  
Hans Bonekamp ◽  
Christelle Ponsard ◽  
François Parisot ◽  
Axel von Engeln ◽  
...  
Keyword(s):  
Radio Occultation ◽  
Sea Surface ◽  
Altimeter Data ◽  
Climate Data ◽  
Satellite Altimeter ◽  
Data Services ◽  
Backward Compatibility ◽  
Data Record ◽  
Climate Data Record ◽  
Satellite Altimeter Data

Abstract. The Sentinel-6 mission is proposed as a multi-partner programme to continue the Jason satellite altimeter data services beyond the Jason-2 and Jason-3 missions. The Sentinel-6 mission programme consists of two identical satellites flying in sequence to prolong the climate data record of sea level accumulated by the TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 missions from 2020 to beyond 2030. The Sentinel-6 mission intends to maintain these services in a fully operational manner. A key feature is the simultaneous pulse-limited and synthetic aperture radar processing allowing direct and continuous comparisons of the sea surface height measurements based on these processing methods and providing backward compatibility. The Sentinel-6 mission will also include radio occultation user services.

scholarly journals The Role Of High Degree Potential Coefficients And Satellite Altimeter Data In Gravity Field Aproximation In The Malaysian Region

1988 ◽  
pp. 1-9
Author(s):  
Majid Kadir
Keyword(s):  
Gravity Anomaly ◽  
Gravity Field ◽  
Peninsular Malaysia ◽  
Gravity Models ◽  
Altimeter Data ◽  
Satellite Altimeter ◽  
Earth Gravity ◽  
Gravity Measurements ◽  
High Degree ◽  
Satellite Altimeter Data

Earth Gravity models (OSU81, OSU86E,and F) defined by a set of high degree potential coefficients were used to generate the geopotential geoid in the Malaysian region. In the very near future, land gravity measurements can be carried out where the station positioning in the survey will be by Global Positioning System (GPS) operating in differential mode. In areas with scarce height benchmark, especially in the remote areas of Peninsular Malaysia, the geopotential geoid can be utilized in conjunction with the satellite derived ellipsoidal heights to yield the orthometric heights of the gravity stations. Satellite altimeter data has the ability to provide high frequency gravity field information in the surrounding marine areas. The method of gravity anomaly recovery in the Tioman test area was based on the theory of least squares collocation. Gravity anomaly maps derived from satellite altimeter data can be used to scan large off-shore areas for detecting density contrasts within the oceanic's outer crust, and thus providing an indirect indication of potential hydrocarbon deposits.

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