Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model
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 p...
Published in: | Earth and Space Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/111a3c5d-316b-4912-baec-69eeb54f8c4d https://doi.org/10.1029/2018EA000502 https://backend.orbit.dtu.dk/ws/files/194349823/Abulaitijiang_et_al_2019_Earth_and_Space_Science.pdf |
id |
ftdtupubl:oai:pure.atira.dk:publications/111a3c5d-316b-4912-baec-69eeb54f8c4d |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/111a3c5d-316b-4912-baec-69eeb54f8c4d 2024-09-09T19:14:40+00:00 Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model Abulaitijiang, Adili Andersen, Ole Baltazar Sandwell, David 2019 application/pdf https://orbit.dtu.dk/en/publications/111a3c5d-316b-4912-baec-69eeb54f8c4d https://doi.org/10.1029/2018EA000502 https://backend.orbit.dtu.dk/ws/files/194349823/Abulaitijiang_et_al_2019_Earth_and_Space_Science.pdf eng eng https://orbit.dtu.dk/en/publications/111a3c5d-316b-4912-baec-69eeb54f8c4d info:eu-repo/semantics/openAccess Abulaitijiang , A , Andersen , O B & Sandwell , D 2019 , ' Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model ' , Earth and Space Science , vol. 6 , no. 8 , pp. 1336-1347 . https://doi.org/10.1029/2018EA000502 article 2019 ftdtupubl https://doi.org/10.1029/2018EA000502 2024-06-18T14:48:45Z 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 Arctic Ocean Chukchi Sea ice Technical University of Denmark: DTU Orbit Arctic Arctic Ocean Earth and Space Science 6 8 1336 1347 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
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 |
Abulaitijiang, Adili Andersen, Ole Baltazar Sandwell, David |
spellingShingle |
Abulaitijiang, Adili Andersen, Ole Baltazar Sandwell, David Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model |
author_facet |
Abulaitijiang, Adili Andersen, Ole Baltazar Sandwell, David |
author_sort |
Abulaitijiang, Adili |
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 |
publishDate |
2019 |
url |
https://orbit.dtu.dk/en/publications/111a3c5d-316b-4912-baec-69eeb54f8c4d https://doi.org/10.1029/2018EA000502 https://backend.orbit.dtu.dk/ws/files/194349823/Abulaitijiang_et_al_2019_Earth_and_Space_Science.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Chukchi Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Chukchi Sea ice |
op_source |
Abulaitijiang , A , Andersen , O B & Sandwell , D 2019 , ' Improved Arctic Ocean Bathymetry Derived From DTU17 Gravity Model ' , Earth and Space Science , vol. 6 , no. 8 , pp. 1336-1347 . https://doi.org/10.1029/2018EA000502 |
op_relation |
https://orbit.dtu.dk/en/publications/111a3c5d-316b-4912-baec-69eeb54f8c4d |
op_rights |
info:eu-repo/semantics/openAccess |
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_ |
1809754924663177216 |