Integration of geospatial data for mapping variation of sediment thickness in the North Sea
International audience The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and geophysical grids showing EGM20...
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Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951/document https://hal.archives-ouvertes.fr/hal-02910951/file/25_14.pdf https://doi.org/10.7427/DDI.25.14 |
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ftccsdartic:oai:HAL:hal-02910951v1 |
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openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
North Sea Sediment Thickness Cartography Geology GMT [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
North Sea Sediment Thickness Cartography Geology GMT [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Lemenkova, Polina Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
topic_facet |
North Sea Sediment Thickness Cartography Geology GMT [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and geophysical grids showing EGM2008 geoid undulations and marine free-air gravity. The data have been processed using GMT. The data analysis revealed variations in the occurrence and distribution of sediment materials as well as its relationship with topography and regional geophysical settings, marine free-air gravity and geoid. Analysis of the topographic map was performed to describe the structural features of the seafloor. Ridges, large-scale sandbanks, shallow coastal areas and local depressions illustrate uneven bathymetry with northward increasing depths. The highest recorded value is 12,779.642 m located in the northern ares in the SW coast of Norway. Moderate values of sediment thickness (5,000-6,000 m) stretching in NW direction clearly correlate with the marine gravity anomaly isolines with values 10-20 mGal which points at the local relief forms in central basin of the North Sea. The subsidence of the outer shelf of the North Sea and increase of sediment thickness is notable in the central depressions and northern areas: Faroe Islands and Rockall Plateau. The sediment thickness shows the relationship with the topography increasing toward high latitudes. It is also associated with the isostatic sink of the submarine relief in the peripheral areas of the Arctic Ocean. Topographic compensation for the seafloor subsidence by increasing sediment thickness explains local dislocations connected with submarine geomorphology. This study also demonstrated that accurate GMT-based cartographic visualization of the oceanic seafloor using high-resolution multi-source raster grids is crucial to better understand spatial distribution of the marine sediments in the northern latitudes of the North Atlantic Ocean. |
author2 |
Ocean University of China (OUC) |
format |
Article in Journal/Newspaper |
author |
Lemenkova, Polina |
author_facet |
Lemenkova, Polina |
author_sort |
Lemenkova, Polina |
title |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_short |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_full |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_fullStr |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_full_unstemmed |
Integration of geospatial data for mapping variation of sediment thickness in the North Sea |
title_sort |
integration of geospatial data for mapping variation of sediment thickness in the north sea |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.archives-ouvertes.fr/hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951/document https://hal.archives-ouvertes.fr/hal-02910951/file/25_14.pdf https://doi.org/10.7427/DDI.25.14 |
long_lat |
ENVELOPE(43.000,43.000,73.500,73.500) ENVELOPE(-18.833,-18.833,56.333,56.333) |
geographic |
Arctic Arctic Ocean Central Basin Faroe Islands Norway Rockall Plateau |
geographic_facet |
Arctic Arctic Ocean Central Basin Faroe Islands Norway Rockall Plateau |
genre |
Arctic Arctic Ocean Faroe Islands North Atlantic |
genre_facet |
Arctic Arctic Ocean Faroe Islands North Atlantic |
op_source |
ISSN: 1842-614X Scientific Annals of the Danube Delta Institute https://hal.archives-ouvertes.fr/hal-02910951 Scientific Annals of the Danube Delta Institute, Danube Delta Technological Information Center, 2020, 25, pp.129-138. ⟨10.7427/DDI.25.14⟩ http://www.ddniscientificannals.ro/scientific-annals/26-volume-25/199-vol25_art14 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.7427/DDI.25.14 hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951/document https://hal.archives-ouvertes.fr/hal-02910951/file/25_14.pdf doi:10.7427/DDI.25.14 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.7427/DDI.25.14 |
_version_ |
1766349144716214272 |
spelling |
ftccsdartic:oai:HAL:hal-02910951v1 2023-05-15T15:18:58+02:00 Integration of geospatial data for mapping variation of sediment thickness in the North Sea Lemenkova, Polina Ocean University of China (OUC) 2020-08-03 https://hal.archives-ouvertes.fr/hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951/document https://hal.archives-ouvertes.fr/hal-02910951/file/25_14.pdf https://doi.org/10.7427/DDI.25.14 en eng HAL CCSD Danube Delta Technological Information Center info:eu-repo/semantics/altIdentifier/doi/10.7427/DDI.25.14 hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951 https://hal.archives-ouvertes.fr/hal-02910951/document https://hal.archives-ouvertes.fr/hal-02910951/file/25_14.pdf doi:10.7427/DDI.25.14 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess CC-BY-NC ISSN: 1842-614X Scientific Annals of the Danube Delta Institute https://hal.archives-ouvertes.fr/hal-02910951 Scientific Annals of the Danube Delta Institute, Danube Delta Technological Information Center, 2020, 25, pp.129-138. ⟨10.7427/DDI.25.14⟩ http://www.ddniscientificannals.ro/scientific-annals/26-volume-25/199-vol25_art14 North Sea Sediment Thickness Cartography Geology GMT [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.7427/DDI.25.14 2020-12-23T23:31:12Z International audience The study presents geospatial analysis of the seabed distribution of North Sea sediments. Data include thematic datasets with a high-resolution: GlobSed 5-arc-minute total sediment thickness grid combined with GEBCO regional bathymetric grid and geophysical grids showing EGM2008 geoid undulations and marine free-air gravity. The data have been processed using GMT. The data analysis revealed variations in the occurrence and distribution of sediment materials as well as its relationship with topography and regional geophysical settings, marine free-air gravity and geoid. Analysis of the topographic map was performed to describe the structural features of the seafloor. Ridges, large-scale sandbanks, shallow coastal areas and local depressions illustrate uneven bathymetry with northward increasing depths. The highest recorded value is 12,779.642 m located in the northern ares in the SW coast of Norway. Moderate values of sediment thickness (5,000-6,000 m) stretching in NW direction clearly correlate with the marine gravity anomaly isolines with values 10-20 mGal which points at the local relief forms in central basin of the North Sea. The subsidence of the outer shelf of the North Sea and increase of sediment thickness is notable in the central depressions and northern areas: Faroe Islands and Rockall Plateau. The sediment thickness shows the relationship with the topography increasing toward high latitudes. It is also associated with the isostatic sink of the submarine relief in the peripheral areas of the Arctic Ocean. Topographic compensation for the seafloor subsidence by increasing sediment thickness explains local dislocations connected with submarine geomorphology. This study also demonstrated that accurate GMT-based cartographic visualization of the oceanic seafloor using high-resolution multi-source raster grids is crucial to better understand spatial distribution of the marine sediments in the northern latitudes of the North Atlantic Ocean. Article in Journal/Newspaper Arctic Arctic Ocean Faroe Islands North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Arctic Ocean Central Basin ENVELOPE(43.000,43.000,73.500,73.500) Faroe Islands Norway Rockall Plateau ENVELOPE(-18.833,-18.833,56.333,56.333) |