A precise gravimetric geoid model in a mountainous area with scarce gravity data: a case study in central Turkey

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dc.contributor.authorAbbak, Ramazan Alpay
dc.contributor.authorSjoberg, Lars E.
dc.contributor.authorEllmann, Artu
dc.contributor.authorÜstün, Aydın
dc.date.accessioned2020-03-26T18:23:37Z
dc.date.available2020-03-26T18:23:37Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractIn mountainous regions with scarce gravity data, gravimetric geoid determination is a difficult task that needs special attention to obtain reliable results satisfying the demands, e.g., of engineering applications. The present study investigates a procedure for combining a suitable global geopotential model and available terrestrial data in order to obtain a precise regional geoid model for Konya Closed Basin (KCB). The KCB is located in the central part of Turkey, where a very limited amount of terrestrial gravity data is available. Various data sources, such as the Turkish digital elevation model with 3 '' x 3 '' resolution, a recently published satellite-only global geopotential model from the Gravity Recovery and Climate Experiment satellite (GRACE) and the ground gravity observations, are combined in the least-squares sense by the modified Stokes' formula. The new gravimetric geoid model is compared with Global Positioning System (GPS)/levelling at the control points, resulting in the Root Mean Square Error (RMS) differences of +/- 6.4 cm and 1.7 ppm in the absolute and relative senses, respectively. This regional geoid model appears to he more accurate than the Earth Gravitational Model 2008, which is the best global model over the target area, with the RMS differences of +/- 8.6 cm and 1.8 ppm in the absolute and relative senses, respectively. These results show that the accuracy of a regional gravimetric model can be augmented by the combination of a global geopotential model and local terrestrial data in mountainous areas even though the quality and resolution of the primary terrestrial data are not satisfactory to the geoid modelling procedure.en_US
dc.description.sponsorshipResearch Fund of Selcuk University of TurkeySelcuk University [09-101-009]; Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Estonian Archimedes Foundationen_US
dc.description.sponsorshipThis work is funded by The Research Fund of Selcuk University of Turkey under grant 09-101-009. The first author was supported by the two research grants from The Scientific and Technological Research Council of Turkey (TUBITAK) and The Estonian Archimedes Foundation, during this study.en_US
dc.identifier.doi10.1007/s11200-011-9001-0en_US
dc.identifier.endpage927en_US
dc.identifier.issn0039-3169en_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage909en_US
dc.identifier.urihttps://dx.doi.org/10.1007/s11200-011-9001-0
dc.identifier.urihttps://hdl.handle.net/20.500.12395/27691
dc.identifier.volume56en_US
dc.identifier.wosWOS:000311588500001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSPRINGERen_US
dc.relation.ispartofSTUDIA GEOPHYSICA ET GEODAETICAen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectgeoiden_US
dc.subjectKTH methoden_US
dc.subjectKonya Closed Basinen_US
dc.subjectleast-squares modificationen_US
dc.subjectStokes' formulaen_US
dc.titleA precise gravimetric geoid model in a mountainous area with scarce gravity data: a case study in central Turkeyen_US
dc.typeArticleen_US

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