Abstract's details

Assessment of marine gravity models of the Mediterranean

Sean Bruinsma (CNES, France)

CoAuthors

Franck Reinquin (CNES, France); Philippe Schaeffer (CLS, France)

Event: 2022 Ocean Surface Topography Science Team Meeting

Session: The Geoid, Mean Sea Surfaces and Mean Dynamic Topography

Presentation type: Type Oral

Marine gravity data collected with gravimeters on ships, while not available for large parts of the Mediterranean, is used in the assessment of altimeter-inferred gravity anomalies, such as the known DTU and UCSD models as well as our first model of the Mediterranean. The marine gravity data we used was compiled and calibrated for the GEOMED2 project. The aim of that project, which started in 2014, was the calculation of high-resolution geoids of the Mediterranean using different methodologies. One interesting and surprising result of the project was that the ship gravity data, even the data from the sixties and seventies after calibration, is more accurate than DTU15 or UCSD v24 and is therefore suitable for model assessment.
In this analysis, we compared the different altimeter-inferred gravity anomaly models between themselves, and to the ship gravity anomaly data.
 

Oral presentation show times:

Room Start Date End Date
Sala Pasinetti Thu, Nov 03 2022,11:00 Thu, Nov 03 2022,11:15
Sean Bruinsma
CNES
France
sean.bruinsma@cnes.fr