Hybrid precise gravimetric geoid model for Iran based on recent GRACE and SRTM data and the least squares modification of Stokes formula
2006 (English)In: J. Physics of Earth and Space, Vol. 32, no 1, 7-23 p.Article in journal (Refereed) Published
Since 1986, several gravimetric geoid models have been published in the Iran region. It was found thatthe standard deviation of fitting between these models versus GPS/levelling data in most cases was worsethan the currently available global geopotential models. A new hybrid gravimetric geoid model computed(IRG04) by using the least squares modification of Stokes formula based on the recent published GRACEbased global geopotential model, the high-resolution Shuttle SRTM global digital terrain model and anew Iranian gravity anomaly database. The absolute and relative accuracies of the new geoid model testedversus the GPS/levelling points and they are estimated about 0.27 m and 3.8 ppm, respectively.Additional comparison between the IRG04 and the recent published gravimetric geoid models shows thatthe relative accuracy of the IRG04 is almost 4 times better than the most recent published models in thisarea.
Place, publisher, year, edition, pages
2006. Vol. 32, no 1, 7-23 p.
Gravity database, Least-squares modification of Stokes function, Geoid determination, SRTM, GRACE, GPS/levelling, Iran
Earth and Related Environmental Sciences
IdentifiersURN: urn:nbn:se:kth:diva-6194OAI: oai:DiVA.org:kth-6194DiVA: diva2:10835
QC 201009062006-10-032006-10-032010-09-06Bibliographically approved