Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys
Data from two surveys by multi-beam sonar and two by marine/terrestrial LiDAR are used to evaluate the geomorphology of the seafloor in littoral areas of the Canadian Arctic Channels, near King William Island, Nunavut. Submarine terrains show well-preserved glacial landforms (drumlins, mega-scale gl...
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crcansciencepubl:10.1139/cjes-2018-0312 2023-12-17T10:23:37+01:00 Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys Shaw, John Potter, D. Patrick Wu, Yongsheng 2020 http://dx.doi.org/10.1139/cjes-2018-0312 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjes-2018-0312 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjes-2018-0312 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 57, issue 1, page 123-132 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2020 crcansciencepubl https://doi.org/10.1139/cjes-2018-0312 2023-11-19T13:38:26Z Data from two surveys by multi-beam sonar and two by marine/terrestrial LiDAR are used to evaluate the geomorphology of the seafloor in littoral areas of the Canadian Arctic Channels, near King William Island, Nunavut. Submarine terrains show well-preserved glacial landforms (drumlins, mega-scale glacial lineations, iceberg-turbated terrain, recessional moraines, and glaciofluvial landforms) with only slight modification by modern processes (wave action and sea-ice activity). At Gjoa Haven the seafloor is imprinted by fields of pits 2 m wide and 0.15 m deep. They may result from gas hydrate dissolution triggered by falling relative sea levels. The Arctic Archipelago displays what might be termed inverted terrains: marine terrains, chiefly beach ridge complexes, exist above modern sea level and well-preserved glacial terrains are present below modern sea level. This is the inverse of the submerging regimes of Atlantic Canada, where glacial terrains exist on land, but below sea level they have been effaced and modified by marine processes down to the lowstand depth. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Gjoa Haven Iceberg* King William Island Nunavut Sea ice Canadian Science Publishing (via Crossref) Arctic Nunavut Canadian Arctic Archipelago Canada King William Island ENVELOPE(-97.418,-97.418,69.168,69.168) William Island ENVELOPE(-130.703,-130.703,54.035,54.035) Gjoa Haven ENVELOPE(-95.882,-95.882,68.626,68.626) Canadian Journal of Earth Sciences 57 1 123 132 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Shaw, John Potter, D. Patrick Wu, Yongsheng Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys |
topic_facet |
General Earth and Planetary Sciences |
description |
Data from two surveys by multi-beam sonar and two by marine/terrestrial LiDAR are used to evaluate the geomorphology of the seafloor in littoral areas of the Canadian Arctic Channels, near King William Island, Nunavut. Submarine terrains show well-preserved glacial landforms (drumlins, mega-scale glacial lineations, iceberg-turbated terrain, recessional moraines, and glaciofluvial landforms) with only slight modification by modern processes (wave action and sea-ice activity). At Gjoa Haven the seafloor is imprinted by fields of pits 2 m wide and 0.15 m deep. They may result from gas hydrate dissolution triggered by falling relative sea levels. The Arctic Archipelago displays what might be termed inverted terrains: marine terrains, chiefly beach ridge complexes, exist above modern sea level and well-preserved glacial terrains are present below modern sea level. This is the inverse of the submerging regimes of Atlantic Canada, where glacial terrains exist on land, but below sea level they have been effaced and modified by marine processes down to the lowstand depth. |
format |
Article in Journal/Newspaper |
author |
Shaw, John Potter, D. Patrick Wu, Yongsheng |
author_facet |
Shaw, John Potter, D. Patrick Wu, Yongsheng |
author_sort |
Shaw, John |
title |
Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys |
title_short |
Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys |
title_full |
Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys |
title_fullStr |
Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys |
title_full_unstemmed |
Geomorphic diversity and complexity of the inner shelf, Canadian Arctic Archipelago, based on LiDAR and multibeam sonar surveys |
title_sort |
geomorphic diversity and complexity of the inner shelf, canadian arctic archipelago, based on lidar and multibeam sonar surveys |
publisher |
Canadian Science Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1139/cjes-2018-0312 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjes-2018-0312 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjes-2018-0312 |
long_lat |
ENVELOPE(-97.418,-97.418,69.168,69.168) ENVELOPE(-130.703,-130.703,54.035,54.035) ENVELOPE(-95.882,-95.882,68.626,68.626) |
geographic |
Arctic Nunavut Canadian Arctic Archipelago Canada King William Island William Island Gjoa Haven |
geographic_facet |
Arctic Nunavut Canadian Arctic Archipelago Canada King William Island William Island Gjoa Haven |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Gjoa Haven Iceberg* King William Island Nunavut Sea ice |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Gjoa Haven Iceberg* King William Island Nunavut Sea ice |
op_source |
Canadian Journal of Earth Sciences volume 57, issue 1, page 123-132 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjes-2018-0312 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
57 |
container_issue |
1 |
container_start_page |
123 |
op_container_end_page |
132 |
_version_ |
1785559244892798976 |