Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method
We compute a new gravimetric geoid model for Peninsular Malaysia (PMGG2020) based on the Royal Institute of Technology (KTH) method. The PMGG2020 was computed from 8474 terrestrial gravity points, satellite altimetry-derived gravity anomaly (DTU17), 24,855 airborne gravity data, and the TanDEM-X Dig...
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| Format: | Article |
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Springer Science and Business Media Deutschland GmbH
2021
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| _version_ | 1796856766363860992 |
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| author | Pa’suya, Muhammad Faiz Md. Din, Ami Hassan Mohd. Yusoff, Mohd. Yunus Abbak, Ramazan Alpay Hamden, Mohammad Hanif |
| author_facet | Pa’suya, Muhammad Faiz Md. Din, Ami Hassan Mohd. Yusoff, Mohd. Yunus Abbak, Ramazan Alpay Hamden, Mohammad Hanif |
| author_sort | Pa’suya, Muhammad Faiz |
| collection | ePrints |
| description | We compute a new gravimetric geoid model for Peninsular Malaysia (PMGG2020) based on the Royal Institute of Technology (KTH) method. The PMGG2020 was computed from 8474 terrestrial gravity points, satellite altimetry-derived gravity anomaly (DTU17), 24,855 airborne gravity data, and the TanDEM-X Digital Elevation Model. All the gravity datasets were combined and gridded onto a 1-min resolution using the 3D Least Square Collocation (LSC) method with EIGEN-6C4 as the reference field. GO_CONS_GCF_2_SPW_R4 was used to provide long wavelengths of gravity field up to 130 maximum degrees and order in the geoid computation. Based on an evaluation using 173 Global Navigation Satellite System (GNSS)-levelling points distributed over Peninsular Malaysia, the precision of the PMGG2020 was 0.058 m. It is almost identical to the accuracy of the official Peninsular Malaysia gravimetric geoid, WMG03A. Using airborne gravity, the precision of PMGG2020 showed a significant improvement of ~4 cm over the existing KTH-derived geoid model, PMSGM2014. These results highlight the significant effect of airborne gravity data on the accuracy of the geoid model. |
| first_indexed | 2024-03-05T18:48:00Z |
| format | Article |
| id | utm.eprints-30564 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T18:48:00Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media Deutschland GmbH |
| record_format | dspace |
| spelling | utm.eprints-305642022-02-28T13:26:41Z http://eprints.utm.my/30564/ Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method Pa’suya, Muhammad Faiz Md. Din, Ami Hassan Mohd. Yusoff, Mohd. Yunus Abbak, Ramazan Alpay Hamden, Mohammad Hanif NA Architecture We compute a new gravimetric geoid model for Peninsular Malaysia (PMGG2020) based on the Royal Institute of Technology (KTH) method. The PMGG2020 was computed from 8474 terrestrial gravity points, satellite altimetry-derived gravity anomaly (DTU17), 24,855 airborne gravity data, and the TanDEM-X Digital Elevation Model. All the gravity datasets were combined and gridded onto a 1-min resolution using the 3D Least Square Collocation (LSC) method with EIGEN-6C4 as the reference field. GO_CONS_GCF_2_SPW_R4 was used to provide long wavelengths of gravity field up to 130 maximum degrees and order in the geoid computation. Based on an evaluation using 173 Global Navigation Satellite System (GNSS)-levelling points distributed over Peninsular Malaysia, the precision of the PMGG2020 was 0.058 m. It is almost identical to the accuracy of the official Peninsular Malaysia gravimetric geoid, WMG03A. Using airborne gravity, the precision of PMGG2020 showed a significant improvement of ~4 cm over the existing KTH-derived geoid model, PMSGM2014. These results highlight the significant effect of airborne gravity data on the accuracy of the geoid model. Springer Science and Business Media Deutschland GmbH 2021-10 Article PeerReviewed Pa’suya, Muhammad Faiz and Md. Din, Ami Hassan and Mohd. Yusoff, Mohd. Yunus and Abbak, Ramazan Alpay and Hamden, Mohammad Hanif (2021) Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method. Arabian Journal of Geosciences, 14 (19). ISSN 1866-7511 http://dx.doi.org/10.1007/s12517-021-08247-0 DOI:10.1007/s12517-021-08247-0 |
| spellingShingle | NA Architecture Pa’suya, Muhammad Faiz Md. Din, Ami Hassan Mohd. Yusoff, Mohd. Yunus Abbak, Ramazan Alpay Hamden, Mohammad Hanif Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method |
| title | Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method |
| title_full | Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method |
| title_fullStr | Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method |
| title_full_unstemmed | Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method |
| title_short | Refinement of gravimetric geoid model by incorporating terrestrial, marine, and airborne gravity using KTH method |
| title_sort | refinement of gravimetric geoid model by incorporating terrestrial marine and airborne gravity using kth method |
| topic | NA Architecture |
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