HR: 1330h
AN: G32A-0731    [PDF]
TI: KMS2002 Global Marine Gravity Field, Bathymetry And Mean Sea Surface
AU: * Andersen, O B
EM: oa@kms.dk
AF: National Survey (KMS), Rentemestervej 8, Copenhagen NV, 2400 Denmark
AB: During the last three years the KMS global marine gravity field has been improved in corporation with National Imaginary and Mapping Agency (NIMA). These improvements have resulted in a release of KMS99 and KMS2001 gravity fields. Especially, the KMS99 gravity field presented a significant improvement in comparisons with marine observations, as well as global coverage within the 82 degree parallels by adding the ERS-ERM data. The subsequent, KMS2001 only resulted in minor improved gravity field modelling. A new revised global high resolution marine gravity field KMS2002 is presented in this Combining this fine- tuning with careful edition of data are expected to improve the KMS2002 gravity field, in particularly coastal regions. Improved resolution and data coverage in particularly ice-covered regions are other improvements, which is currently under investigation. The KMS gravity field modelling approach uses the observed sea surface height anomalies relative to EGM96 and converts these into gravity using FFT techniques. For the KMS2002 focus has been on improved mapping of the intermediate wavelength (100-250 km) of the gravity field using the exact repeat mission data from the TOPEX/POSEIDON and ERS-2 satellite missions. The KMS2002 gravity field is accompanied with a high-resolution bathymetry model and a high resolution mean sea surface.
UR: http://research.kms.dk/GRAVITY
DE: 0920 Gravity methods
DE: 1200 GEODESY AND GRAVITY
DE: 1219 Local gravity anomalies and crustal structure
DE: 1234 Regional and global gravity anomalies and Earth structure
DE: 3010 Gravity
SC: Geodesy [G]
MN: 2003 Fall Meeting