Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs
This paper presents a series of 50 geomorphological maps of the seabed of northeastern Baffin Island fiords and cross-shelf troughs, in eastern Arctic Canada. The mapping was produced using swath bathymetry imagery from multiple bathymetry datasets. A total of 24 types of landform were systematicall...
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ftrepec:oai:RePEc:taf:tjomxx:v:15:y:2019:i:2:p:662-676 2023-05-15T14:55:16+02:00 Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs Etienne Brouard Patrick Lajeunesse http://hdl.handle.net/10.1080/17445647.2019.1647302 unknown http://hdl.handle.net/10.1080/17445647.2019.1647302 article ftrepec 2020-12-04T13:37:35Z This paper presents a series of 50 geomorphological maps of the seabed of northeastern Baffin Island fiords and cross-shelf troughs, in eastern Arctic Canada. The mapping was produced using swath bathymetry imagery from multiple bathymetry datasets. A total of 24 types of landform were systematically mapped (>55,000 landforms) and reflect processes linked to subglacial, ice-marginal or paraglacial to postglacial environments. The landforms record the transition of the seabed from being covered by a marine-terminating ice sheet to the establishment of postglacial conditions. The landform assemblages allow the distinction of ice-flows orientation and ice-stream pathways along fiords and cross-shelf troughs. The multiple moraines and grounding-zone wedges indicate that the ice margin stabilized during retreat and that the overall deglaciation occurred by steps. These maps provide a framework for future investigations in northeastern Baffin Island fiords and shelf and can also provide a template for future seabed geomorphological studies in Arctic Canada. Article in Journal/Newspaper Arctic Baffin Island Baffin Ice Sheet RePEc (Research Papers in Economics) Arctic Baffin Island Canada |
institution |
Open Polar |
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RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
This paper presents a series of 50 geomorphological maps of the seabed of northeastern Baffin Island fiords and cross-shelf troughs, in eastern Arctic Canada. The mapping was produced using swath bathymetry imagery from multiple bathymetry datasets. A total of 24 types of landform were systematically mapped (>55,000 landforms) and reflect processes linked to subglacial, ice-marginal or paraglacial to postglacial environments. The landforms record the transition of the seabed from being covered by a marine-terminating ice sheet to the establishment of postglacial conditions. The landform assemblages allow the distinction of ice-flows orientation and ice-stream pathways along fiords and cross-shelf troughs. The multiple moraines and grounding-zone wedges indicate that the ice margin stabilized during retreat and that the overall deglaciation occurred by steps. These maps provide a framework for future investigations in northeastern Baffin Island fiords and shelf and can also provide a template for future seabed geomorphological studies in Arctic Canada. |
format |
Article in Journal/Newspaper |
author |
Etienne Brouard Patrick Lajeunesse |
spellingShingle |
Etienne Brouard Patrick Lajeunesse Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs |
author_facet |
Etienne Brouard Patrick Lajeunesse |
author_sort |
Etienne Brouard |
title |
Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs |
title_short |
Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs |
title_full |
Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs |
title_fullStr |
Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs |
title_full_unstemmed |
Submarine geomorphology of the northeastern Baffin Island fiords and cross-shelf troughs |
title_sort |
submarine geomorphology of the northeastern baffin island fiords and cross-shelf troughs |
url |
http://hdl.handle.net/10.1080/17445647.2019.1647302 |
geographic |
Arctic Baffin Island Canada |
geographic_facet |
Arctic Baffin Island Canada |
genre |
Arctic Baffin Island Baffin Ice Sheet |
genre_facet |
Arctic Baffin Island Baffin Ice Sheet |
op_relation |
http://hdl.handle.net/10.1080/17445647.2019.1647302 |
_version_ |
1766327056105209856 |