Regional analysis of recent global geopotential models: A case study in Turkey

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dc.contributor.authorDemir, Selda
dc.contributor.authorAbbak, Ramazan Alpay
dc.date.accessioned2020-03-26T19:43:56Z
dc.date.available2020-03-26T19:43:56Z
dc.date.issued2017
dc.departmentSelçuk Üniversitesien_US
dc.description17th International Multidisciplinary Scientific GeoConference, SGEM 2017 -- 29 June 2017 through 5 July 2017 -- 130787en_US
dc.description.abstractGeoid is an equipotential surface of Earth’s gravity field, which partially coincides with the mean sea level and extended inside continents. In the gravimetric geoid determination; global geopotential models (GGMs), digital elevation models and terrestrial gravity observations are combined in a proposed technique (e.g. Remove-Compute-Restore). The external Earth's gravity field is represented by a GGM that consists of the globally and homogeneously distributed terrestrial and satellite gravity measurements. Currently, CHAMP, GRACE, and GOCE satellite missions have been used to determine the gravity field. Satellite-based GGMs that mainly represent the long wavelength components of the gravity field can be evaluated externally by using terrestrial data such as ground gravity, GPS-leveling, etc. Then, the standard deviation of the differences (e.g. NGGM minus NGPS-LEV) is considered as the accuracy of the model. In this study, geoid undulations derived from recently published GGMs are compared with equivalents obtained from GPS-leveling data, and the accuracies of selected GGMs are investigated in the territory of Turkey. Numerical results show that GGMs combining GRACE and GOCE data are more accurate than the others. © SGEM2017. All Rights Reserved.en_US
dc.identifier.doi10.5593/sgem2017/22/S09.068en_US
dc.identifier.endpage554en_US
dc.identifier.isbn9786197105001; 9786197105988; 9786197105995; 9786197408003; 9786197408010; 9786197408027; 9786197408034; 9786197408041; 9786197408058; 9786197408065; 9786197408072; 9786197408089; 9786197408096; 9786197408102; 9786197408119; 9786197408126; 9786197408133; 9786197408263
dc.identifier.issn1314-2704en_US
dc.identifier.issue22en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage549en_US
dc.identifier.urihttps://dx.doi.org/10.5593/sgem2017/22/S09.068
dc.identifier.urihttps://hdl.handle.net/20.500.12395/35788
dc.identifier.volume17en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInternational Multidisciplinary Scientific Geoconferenceen_US
dc.relation.ispartofInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEMen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectCHAMPen_US
dc.subjectGlobal geopotential modelen_US
dc.subjectGOCEen_US
dc.subjectGPS-leveling dataen_US
dc.subjectGRACEen_US
dc.titleRegional analysis of recent global geopotential models: A case study in Turkeyen_US
dc.typeConference Objecten_US

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