A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada)
ABSTRACT Two composite sedimentary sequences sampled in the ice‐proximal (12CS) and ice‐distal (02CS) areas of Coronation Fjord (Baffin Island, Nunavut, Canada) were investigated in order to reconstruct the effect of climate variability on 600 years of changes in sediment transfer from the eastern P...
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crwiley:10.1002/jqs.3531 2024-06-23T07:50:31+00:00 A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) Rodríguez‐Cuicas, María‐Emilia Montero‐Serrano, Jean‐Carlos St‐Onge, Guillaume Normandeau, Alexandre Natural Sciences and Engineering Research Council of Canada ArcticNet 2023 http://dx.doi.org/10.1002/jqs.3531 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3531 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ Journal of Quaternary Science volume 38, issue 7, page 1062-1081 ISSN 0267-8179 1099-1417 journal-article 2023 crwiley https://doi.org/10.1002/jqs.3531 2024-05-31T08:15:38Z ABSTRACT Two composite sedimentary sequences sampled in the ice‐proximal (12CS) and ice‐distal (02CS) areas of Coronation Fjord (Baffin Island, Nunavut, Canada) were investigated in order to reconstruct the effect of climate variability on 600 years of changes in sediment transfer from the eastern Penny Ice Cap (PIC). Detrital proxies, and physical and sedimentological analyses revealed that glacial meltwater discharges led to frequent rapidly deposited layers (RDLs) in ice‐proximal settings. RDLs in ice‐distal settings involved the sudden release of a large quantity of sediment‐laden water during floods probably originating from adjacent fjords with large sandur deltas. Laminated sediments with ice‐rafted debris throughout the Little Ice Age interval in the ice‐proximal environment suggest that colder conditions promoted glacier growth, leading to successive episodes of turbid hyperpycnal meltwater plumes and iceberg calving in Coronation Fjord. Since 1850 ce , the accelerated Coronation retreat in response to modern warming has led to increased sedimentation rates, abrupt mineralogical and grain size proxy variations and more frequent RDLs. Similar trends between the detrital proxies of the ice‐proximal core and Atlantic Multidecadal Oscillation record and Arctic surface air temperature suggest high connectivity between atmospheric and sea surface temperature variations and PIC dynamics over the last 600 years. Article in Journal/Newspaper Arctic Baffin Island Baffin glacier* Ice cap Iceberg* Nunavut Penny Ice Cap Wiley Online Library Arctic Baffin Island Canada Nunavut Penny Ice Cap ENVELOPE(-66.214,-66.214,67.284,67.284) Journal of Quaternary Science 38 7 1062 1081 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
ABSTRACT Two composite sedimentary sequences sampled in the ice‐proximal (12CS) and ice‐distal (02CS) areas of Coronation Fjord (Baffin Island, Nunavut, Canada) were investigated in order to reconstruct the effect of climate variability on 600 years of changes in sediment transfer from the eastern Penny Ice Cap (PIC). Detrital proxies, and physical and sedimentological analyses revealed that glacial meltwater discharges led to frequent rapidly deposited layers (RDLs) in ice‐proximal settings. RDLs in ice‐distal settings involved the sudden release of a large quantity of sediment‐laden water during floods probably originating from adjacent fjords with large sandur deltas. Laminated sediments with ice‐rafted debris throughout the Little Ice Age interval in the ice‐proximal environment suggest that colder conditions promoted glacier growth, leading to successive episodes of turbid hyperpycnal meltwater plumes and iceberg calving in Coronation Fjord. Since 1850 ce , the accelerated Coronation retreat in response to modern warming has led to increased sedimentation rates, abrupt mineralogical and grain size proxy variations and more frequent RDLs. Similar trends between the detrital proxies of the ice‐proximal core and Atlantic Multidecadal Oscillation record and Arctic surface air temperature suggest high connectivity between atmospheric and sea surface temperature variations and PIC dynamics over the last 600 years. |
author2 |
Natural Sciences and Engineering Research Council of Canada ArcticNet |
format |
Article in Journal/Newspaper |
author |
Rodríguez‐Cuicas, María‐Emilia Montero‐Serrano, Jean‐Carlos St‐Onge, Guillaume Normandeau, Alexandre |
spellingShingle |
Rodríguez‐Cuicas, María‐Emilia Montero‐Serrano, Jean‐Carlos St‐Onge, Guillaume Normandeau, Alexandre A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) |
author_facet |
Rodríguez‐Cuicas, María‐Emilia Montero‐Serrano, Jean‐Carlos St‐Onge, Guillaume Normandeau, Alexandre |
author_sort |
Rodríguez‐Cuicas, María‐Emilia |
title |
A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) |
title_short |
A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) |
title_full |
A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) |
title_fullStr |
A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) |
title_full_unstemmed |
A 600‐year marine record associated with the dynamics of the eastern Penny Ice Cap (Baffin Island, Nunavut, Canada) |
title_sort |
600‐year marine record associated with the dynamics of the eastern penny ice cap (baffin island, nunavut, canada) |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/jqs.3531 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.3531 |
long_lat |
ENVELOPE(-66.214,-66.214,67.284,67.284) |
geographic |
Arctic Baffin Island Canada Nunavut Penny Ice Cap |
geographic_facet |
Arctic Baffin Island Canada Nunavut Penny Ice Cap |
genre |
Arctic Baffin Island Baffin glacier* Ice cap Iceberg* Nunavut Penny Ice Cap |
genre_facet |
Arctic Baffin Island Baffin glacier* Ice cap Iceberg* Nunavut Penny Ice Cap |
op_source |
Journal of Quaternary Science volume 38, issue 7, page 1062-1081 ISSN 0267-8179 1099-1417 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1002/jqs.3531 |
container_title |
Journal of Quaternary Science |
container_volume |
38 |
container_issue |
7 |
container_start_page |
1062 |
op_container_end_page |
1081 |
_version_ |
1802641417779019776 |