Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/3703
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dc.contributor.authorPa’suya, M.F.-
dc.contributor.authorMd, Din, A.H.-
dc.contributor.authorAbbak, R.A.-
dc.contributor.authorHamden, M.H.-
dc.contributor.authorYazid, N.M.-
dc.contributor.authorAziz, M.A.C.-
dc.contributor.authorSamad, M.A.A.-
dc.date.accessioned2023-03-03T13:33:36Z-
dc.date.available2023-03-03T13:33:36Z-
dc.date.issued2022-
dc.identifier.issn0039-3169-
dc.identifier.urihttps://doi.org/10.1007/s11200-021-0769-2-
dc.identifier.urihttps://hdl.handle.net/20.500.13091/3703-
dc.description.abstractWe describe the development of a hybrid geoid model for Peninsular Malaysia, based on two approaches. The first approach is utilising an ordinary method fitting the gravimetric geoid to the geometric undulation derived from GNSS-levelling data; the second approach directly fits the gravimetric geoid to the reference mean sea level derived from the tide measurements of Port Klang tide gauge station. The hybrid geoid model fitted to Port Klang (PMHGG2020_PK) is produced by adding an offset of 0.446 m to the gravimetric geoid, based on the comparison at the tide gauge benchmark. To calculate the gravimetric geoid, a new model for Peninsular Malaysia (PMGG2020) has been developed based on Least-Squares Modification of Stokes’ Formula with Additive correction (LSMSA). Three different sources of gravity data which are terrestrial, airborne, and satellite altimetry-derived gravity anomaly (DTU17) have been combined to construct the geoid model. The height information has been extracted from the newly released global digital elevation model, TanDEM-X DEM. GO_CONS_GCF_2_SPW_R4 model derived from GOCE data provides long-wavelengths gravity field up to maximum degree and order 130. The gravity datasets are gridded by 3D Least-Squares Collocation method. The PMGG2020 model is consistent with the geometric geoid heights from 173 GNSS-levelling measurements, with a standard deviation of ±5.8 cm. Evaluation of the hybrid geoid model constructed from the first approach shows a significant improvement over the two existing hybrid geoid models. The accuracy of ±4.6 cm has been achieved after evaluating by 20 GNSS-levelling points, externally. Hybrid geoid model fitted to Port Klang has also been evaluated via 173 GNSS-levelling points, and the result shows that 71% of the total data exhibit height differences lower than 10 cm. The overall results indicate that the hybrid geoid model developed in this study can be valuable as an alternative to the current modern height system in Peninsular Malaysia for surveying and mapping. © 2022, Inst. Geophys. CAS, Prague.en_US
dc.description.sponsorshipPJIM&A/UPP-DPPD 1/2022; Deutsches Zentrum für Luft- und Raumfahrt, DLR: DEM_0THER1156; Universiti Teknologi MARA, UiTMen_US
dc.description.sponsorshipSpecial thanks to the Universiti Teknologi MARA (UiTM), Arau Campus for the financial funding through Internal Research Acculturation - Reference code: 600-UiTMPs (PJIM&A/UPP-DPPD 1/2022). We thank the Department of Survey and Mapping Malaysia (DSMM) for providing terrestrial and airborne gravity data and GNSS-levelling data over Peninsular Malaysia. The authors would also like to thank the German Aerospace Center (DLR) for providing the TanDEM-X DEM under the project —Towards 1 Centimetre Geoid Model at Southern Region Peninsular Malaysia using the New DEM Model- TanDEM-XII (Proposal ID: DEM_0THER1156). We would like to thank Dr. Jack McCubbine at Geoscience Australia for his constructive critique of this manuscript, Professor Dr. Lars Sjöberg for sharing all the valuable knowledge on geoid modelling using the LSMSA method and Dr. Saiful Aman Sulaiman for sharing his computed geoid model for verification.en_US
dc.language.isoenen_US
dc.publisherSpringer Science and Business Media B.V.en_US
dc.relation.ispartofStudia Geophysica et Geodaeticaen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectGNSS-levelling dataen_US
dc.subjectgravimetric geoiden_US
dc.subjecthybrid geoid modelen_US
dc.subjectLSMSAen_US
dc.subjectgeoiden_US
dc.subjectgeometryen_US
dc.subjectGNSSen_US
dc.subjectGOCEen_US
dc.subjectgravimetryen_US
dc.subjectlevelingen_US
dc.subjectsatellite altimetryen_US
dc.subjectTanDEM-Xen_US
dc.subjecttide gaugeen_US
dc.subjectMalaysiaen_US
dc.subjectWest Malaysiaen_US
dc.titleHybrid geoid model over peninsular Malaysia (PMHG2020) using two approachesen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s11200-021-0769-2-
dc.identifier.scopus2-s2.0-85142000282en_US
dc.departmentKTUNen_US
dc.identifier.volume66en_US
dc.identifier.issue3-4en_US
dc.identifier.startpage98en_US
dc.identifier.endpage123en_US
dc.institutionauthor-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanen_US
dc.authorscopusid56405506800-
dc.authorscopusid57204881639-
dc.authorscopusid26031920300-
dc.authorscopusid57203496287-
dc.authorscopusid55901260000-
dc.authorscopusid57213260217-
dc.authorscopusid57213692729-
dc.identifier.scopusqualityQ3-
item.openairetypeArticle-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextembargo_20300101-
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
crisitem.author.dept02.08. Department of Geomatic Engineering-
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
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