Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model
Abstract The existing bathymetry map of the Arctic is a compilation of ship soundings and digitized contours. Due to the presence of all‐year sea ice, costly operations and political restrictions, dense and full coverage of the Arctic is not possible, leaving huge gaps between the existing surveys....
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ftdoajarticles:oai:doaj.org/article:886582ade57d414bb664efba01d53de4 2023-05-15T14:33:29+02:00 Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model Adili Abulaitijiang Ole Baltazar Andersen David Sandwell 2019-08-01T00:00:00Z https://doi.org/10.1029/2018EA000502 https://doaj.org/article/886582ade57d414bb664efba01d53de4 EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2018EA000502 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2018EA000502 https://doaj.org/article/886582ade57d414bb664efba01d53de4 Earth and Space Science, Vol 6, Iss 8, Pp 1336-1347 (2019) Arctic bathymetry gravity anomalies Astronomy QB1-991 Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.1029/2018EA000502 2022-12-30T21:10:31Z Abstract The existing bathymetry map of the Arctic is a compilation of ship soundings and digitized contours. Due to the presence of all‐year sea ice, costly operations and political restrictions, dense and full coverage of the Arctic is not possible, leaving huge gaps between the existing surveys. In this paper, we make use of the existing Arctic bathymetry IBCAOv3 and invert Arctic bathymetry from the recent altimetric gravity model DTU17, whose accuracy is improved significantly with revised data processing strategy. The long and short wavelength components are preserved from IBCAOv3. The band‐pass‐filtering function proposed by Smith and Sandwell (1994, https://doi.org/10.1029/94JB00988) is adapted for the Arctic by reducing the cutoff wavelength. The predicted bathymetry is within 100 m on 85.8% of the grid nodes, when compared to the IBCAOv3. The consistency of the prediction is validated with two independent profiles from Healy cruises conducted in 2016 over the Chukchi Cap. A questionable valley in the IBCAOv3 is detected with gravity and at this spot, bathymetry predicted from gravity is consistent with independent multibeam soundings. The gravity‐inverted bathymetry could be combined with ship soundings for the next generation of Arctic bathymetry map. Article in Journal/Newspaper Arctic Arctic Ocean Chukchi Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Earth and Space Science 6 8 1336 1347 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic bathymetry gravity anomalies Astronomy QB1-991 Geology QE1-996.5 |
spellingShingle |
Arctic bathymetry gravity anomalies Astronomy QB1-991 Geology QE1-996.5 Adili Abulaitijiang Ole Baltazar Andersen David Sandwell Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
topic_facet |
Arctic bathymetry gravity anomalies Astronomy QB1-991 Geology QE1-996.5 |
description |
Abstract The existing bathymetry map of the Arctic is a compilation of ship soundings and digitized contours. Due to the presence of all‐year sea ice, costly operations and political restrictions, dense and full coverage of the Arctic is not possible, leaving huge gaps between the existing surveys. In this paper, we make use of the existing Arctic bathymetry IBCAOv3 and invert Arctic bathymetry from the recent altimetric gravity model DTU17, whose accuracy is improved significantly with revised data processing strategy. The long and short wavelength components are preserved from IBCAOv3. The band‐pass‐filtering function proposed by Smith and Sandwell (1994, https://doi.org/10.1029/94JB00988) is adapted for the Arctic by reducing the cutoff wavelength. The predicted bathymetry is within 100 m on 85.8% of the grid nodes, when compared to the IBCAOv3. The consistency of the prediction is validated with two independent profiles from Healy cruises conducted in 2016 over the Chukchi Cap. A questionable valley in the IBCAOv3 is detected with gravity and at this spot, bathymetry predicted from gravity is consistent with independent multibeam soundings. The gravity‐inverted bathymetry could be combined with ship soundings for the next generation of Arctic bathymetry map. |
format |
Article in Journal/Newspaper |
author |
Adili Abulaitijiang Ole Baltazar Andersen David Sandwell |
author_facet |
Adili Abulaitijiang Ole Baltazar Andersen David Sandwell |
author_sort |
Adili Abulaitijiang |
title |
Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
title_short |
Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
title_full |
Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
title_fullStr |
Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
title_full_unstemmed |
Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
title_sort |
improved arctic ocean bathymetry derived from dtu17 gravity model |
publisher |
American Geophysical Union (AGU) |
publishDate |
2019 |
url |
https://doi.org/10.1029/2018EA000502 https://doaj.org/article/886582ade57d414bb664efba01d53de4 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Chukchi Sea ice |
genre_facet |
Arctic Arctic Ocean Chukchi Sea ice |
op_source |
Earth and Space Science, Vol 6, Iss 8, Pp 1336-1347 (2019) |
op_relation |
https://doi.org/10.1029/2018EA000502 https://doaj.org/toc/2333-5084 2333-5084 doi:10.1029/2018EA000502 https://doaj.org/article/886582ade57d414bb664efba01d53de4 |
op_doi |
https://doi.org/10.1029/2018EA000502 |
container_title |
Earth and Space Science |
container_volume |
6 |
container_issue |
8 |
container_start_page |
1336 |
op_container_end_page |
1347 |
_version_ |
1766306717997465600 |