Airborne gravimetry for geoid and GOCE

R. Forsberg*, A. V. Olesen, E. Nielsen, I. Einarsson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

DTU-Space has since 1996 carried out large area airborne surveys over both polar, tropical and temperate regions, especially for geoid determination and global geopotential models. Recently we have started flying two gravimeters (LCR and Chekan-AM) side by side for increased reliability and redundancy. Typical gravity results are at the 2 mGal rms level, translating into 5-10 cm accuracy in geoid. However, in rough mountainous areas results can be more noisy, mainly due to long-period mountain waves and turbulence. In the paper we outline results of surveys and recent geoid determinations in Antarctica and Tanzania based on DTU-Space aerogravity and GOCE. In both cases the airborne data validate GOCE to very high degrees, and confirms the synergy of airborne gravity and GOCE. For Antarctica, the deep interior Antarctic survey (continued in 2013 from a remote field camp), shows that it is possible efficiently to cover even the most remote regions on the planet with good aerogravity. With the recent termination of the GOCE mission, it is therefore timely to initiate a coordinated, preferably international, airborne gravity effort to cover the polar gap south of 83° S; such a survey can in principle logistically be done in a single season.

Original languageEnglish
Title of host publicationIGFS 2014 - Proceedings of the 3rd International Gravity Field Service, IGFS 2014
Volume144
PublisherSpringer
Publication date2014
Pages27-38
ISBN (Print)9783319398198
DOIs
Publication statusPublished - 2014
Event3rd International Gravity Field Service, IGFS 2014 - Shanghai, China
Duration: 30 Jun 20146 Jul 2014

Conference

Conference3rd International Gravity Field Service, IGFS 2014
Country/TerritoryChina
CityShanghai
Period30/06/201406/07/2014

Keywords

  • Airborne gravity
  • Geoid
  • GOCE
  • Gravimeter

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