INVERSION OF GRAVITY GRADIENTS FOR DETERMINATION OF GRAVITY ANOMALY IN THE POLAR GAPS
2010 (English)In: ACTA GEOD GEOPHYS HUNG, ISSN 1217-8977, Vol. 45, no 4, 440-451 p.Article in journal (Refereed) Published
The Polar Regions are not covered by satellite gravity gradiometry data if the orbital inclination of the satellite is not equal to 90 degrees. This paper investigates the feasibility of determining gravity anomaly (at sea level) by inversion of satellite gravity gradiometry data in these regions. Inversion of each element of tensor of gravitation as well as their joint inversion are investigated. Numerical studies show that gravity anomaly can be recovered with an error of 3 mGal in the north polar gap and 5 mGal in south polar gaps in the presence of 1 mE white noise in the satellite data. These errors can be reduced to 1 mGal and 3 mGal, respectively, by removing the regularization bias from the recovered gravity anomalies.
Place, publisher, year, edition, pages
2010. Vol. 45, no 4, 440-451 p.
bias-correction, gravity gradient inversion, polar gap, regularization, satellite gravity gradiometry
Social and Economic Geography
IdentifiersURN: urn:nbn:se:kth:diva-27701DOI: 10.1556/AGeod.45.2010.4.4ISI: 000284626500004ScopusID: 2-s2.0-78649647831OAI: oai:DiVA.org:kth-27701DiVA: diva2:379811
QC 201012202010-12-202010-12-202010-12-20Bibliographically approved