THe NZGEOID09 model of New Zealand
The NZGeoid09 gravimetric quasigeoid model of New Zealand was computed through FFT-based Stokesian integration with a deterministically modified kernel and an iterative computation approach 13 that accounts for offsets among New Zealand's 13 different local vertical datums (LVDs). NZGeoid09 is...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Maney Publishing
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/3028 |
| _version_ | 1848744117531574272 |
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| author | Claessens, Sten Hirt, Christian Amos, Matthew Featherstone, Will Kirby, Jonathan |
| author_facet | Claessens, Sten Hirt, Christian Amos, Matthew Featherstone, Will Kirby, Jonathan |
| author_sort | Claessens, Sten |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The NZGeoid09 gravimetric quasigeoid model of New Zealand was computed through FFT-based Stokesian integration with a deterministically modified kernel and an iterative computation approach 13 that accounts for offsets among New Zealand's 13 different local vertical datums (LVDs). NZGeoid09 is an improvement over the previous NZGeoid05 due to use of the EGM2008 and DNSC08GRA models, and due to improvements to the data processing strategy. The integration parameters of degree of kernel modification L=40 and cap radius = 2.5 were determined empirically through a comparisonwith 1422 GPS/levelling observations, after the LVD offsets had been removed. The precision of NZGeoid09 was assessed using the same GPS/levelling dataset, yielding an overall standard deviation of 6.2 cm. NZGeoid09 performs better than NZGeoid05 and marginally better than EGM2008, but few data are available in the Southern Alps of New Zealand to give a better evaluation. |
| first_indexed | 2025-11-14T05:56:22Z |
| format | Journal Article |
| id | curtin-20.500.11937-3028 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T05:56:22Z |
| publishDate | 2011 |
| publisher | Maney Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-30282017-01-30T10:27:52Z THe NZGEOID09 model of New Zealand Claessens, Sten Hirt, Christian Amos, Matthew Featherstone, Will Kirby, Jonathan GPS heighting vertical datum unification Quasigeoid determination New Zealand The NZGeoid09 gravimetric quasigeoid model of New Zealand was computed through FFT-based Stokesian integration with a deterministically modified kernel and an iterative computation approach 13 that accounts for offsets among New Zealand's 13 different local vertical datums (LVDs). NZGeoid09 is an improvement over the previous NZGeoid05 due to use of the EGM2008 and DNSC08GRA models, and due to improvements to the data processing strategy. The integration parameters of degree of kernel modification L=40 and cap radius = 2.5 were determined empirically through a comparisonwith 1422 GPS/levelling observations, after the LVD offsets had been removed. The precision of NZGeoid09 was assessed using the same GPS/levelling dataset, yielding an overall standard deviation of 6.2 cm. NZGeoid09 performs better than NZGeoid05 and marginally better than EGM2008, but few data are available in the Southern Alps of New Zealand to give a better evaluation. 2011 Journal Article http://hdl.handle.net/20.500.11937/3028 Maney Publishing fulltext |
| spellingShingle | GPS heighting vertical datum unification Quasigeoid determination New Zealand Claessens, Sten Hirt, Christian Amos, Matthew Featherstone, Will Kirby, Jonathan THe NZGEOID09 model of New Zealand |
| title | THe NZGEOID09 model of New Zealand |
| title_full | THe NZGEOID09 model of New Zealand |
| title_fullStr | THe NZGEOID09 model of New Zealand |
| title_full_unstemmed | THe NZGEOID09 model of New Zealand |
| title_short | THe NZGEOID09 model of New Zealand |
| title_sort | nzgeoid09 model of new zealand |
| topic | GPS heighting vertical datum unification Quasigeoid determination New Zealand |
| url | http://hdl.handle.net/20.500.11937/3028 |