Experiences from air- and ship-borne gravity missions
21/09/2016 | 16:30 | Session 4: Global gravity field modelling
Author(s): Franz Barthelmes, Svetozar Petrovic, Christoph Förste, Biao Lu, Gunter Liebsch and Joachim Schwabe
Franz Barthelmes, Svetozar Petrovic, Christoph Förste, Biao Lu, Gunter Liebsch and Joachim Schwabe
In 2011 GFZ restarted its activities in gravimetry on moving platforms using a new Chekan-AM air/ship gravimeter. Since then various gravity missions have been carried out in order to:
- improve the German geoid together with the Federal Agency for Cartography and Geodesy (BKG). For this purpose, ship gravimetry campaigns have been realized on Lake Constance in 2012, in the regions of the Bay of Greifswald and the Stettin Lagoon (Baltic Sea) in 2013, and in the German Wadden Sea (North Sea) in 2015
- improve the geoid in the Baltic Sea region within the framework of the project “Finalising the Baltic Motorways of the Sea” (FAMOS). In this context two campaigns have been conducted in 2015 together with several European partners around the Baltic Sea under the project management of the Swedish Maritime Administration.
- test the power and limits of airborne gravimetry onboard the German High Altitude and LOng Range (HALO) research aircraft. An appropriate airborne campaign using this aircraft has been carried out in 2012 over Italy in the framework of the project GEOHALO which was a joint project of several universities and research institutions. The main purpose was to check the performance of the equipment on this aircraft, aiming at the plan to cover the gravity data gap over Antarctica.
The presentation gives an overview of these campaigns, summarizes our experiences, especially with respect to processing of the collected data, and shows results from these missions.