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Airborne laser and gravity project for the altimeter calibration site gavdos

Cocard Marc, Papafitsorou-Marti A., Geiger Alain, Clive Banks Andrew, Damianidis K., Drakopoulos Panos G., Exertier P., Forsberg Rene, Frantzis Xenofon, Gidskehaug A., Koutroulis Eftychios, Maratos A., Mavraeidopoulos Athanasios, Papadopoulos Athanasios, Pavlis Erricos C., Pesec P., Spyridakis Nektarios, Tziavos Ilias N., Vergos Georgios S.

Full record

Year 2002
Type of Item Conference Publication
Bibliographic Citation M. Cocard, A. Papafitsorou-Marti, H.G. Kahle, A. Geiger, A. Clive Banks, K. Damianidis, P.G. Drakopoulos, P. Exertier, R. Forsberg, X. Frantzis, A. Gidskehaug, E. Koutroulis, A. Maratos, A. Mavraeidopoulos, S.P. Mertikas, A.V. Olesen, F. Pantazoglou, A. Papadopoulos, E.C. Pavlis, P. Pesec, N. Spyridakis, I.N. Tziavos and G.S. Vergos, "Airborne Laser and Gravity Project for the Altimeter Calibration Site Gavdos", in 27th European Geophysical Society General Assembly, April 2002.
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The isle of Gavdos, situated south of the island of Crete, Greece, has been selected in the framework of the EU project GAVDOS to host absolute sea level monitoring and altimeter calibration facilities due to its offshore location under a crossover point of the Topex/Poseidon and Jason-1. Detailed regional geoid and sea surface topography (SST) models are required for referencing the satellite altimeter measurements over the calibration facility and for studying the regional sea current circulation. This objec- tive will be achieved by carrying out a regional airborne survey, combining gravimetric and laser profiling. We will derive a high resolution geoid from the gravimetric data thus allowing to separate the SST as measured by the laser profiler from the geoid. For both applications the quality of the trajectory of the airplane determined by DGPS and its attitude determined by a DGPS array and by INS are of utmost importance. Some initial airborne gravity measurements over the region were done in February 2001 as part of an EU CAATER project, showing a region with a rough gravity field and large geoid changes. Results from previous airborne laser campaigns over the Ionian and the Aegean Seas are presented and discussed in the light of an enhanced instrumentation, planned for the new campaign.