Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay
The freshwater budget of Hudson Bay is governed by complex interactions between terrestrial, marine, and atmospheric systems. Inuit in Sanikiluaq have observed rapid freezing of flaw leads and polynyas around the Belcher Islands (southeast Hudson Bay) and have been seeking answers about what is cont...
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/32997 2023-06-18T03:40:00+02:00 Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay Eastwood, Rosemary Ann Kuzyk, Zou Zou (Geological Sciences) Barber, David (Environment & Geography) Ehn, Jens (Environment & Geography) MacDonald, Rob (Environment & Geography) Heath, Joel 2018-04-09T21:22:43Z application/pdf http://hdl.handle.net/1993/32997 eng eng http://hdl.handle.net/1993/32997 open access Hudson Bay freshwater-marine coupling master thesis 2018 ftunivmanitoba 2023-06-04T17:42:53Z The freshwater budget of Hudson Bay is governed by complex interactions between terrestrial, marine, and atmospheric systems. Inuit in Sanikiluaq have observed rapid freezing of flaw leads and polynyas around the Belcher Islands (southeast Hudson Bay) and have been seeking answers about what is contributing to this change. This study provides the first winter oceanographic observations of spatial and temporal distribution of freshwater in this region, using tandem measurements of salinity and δ18O from water and ice core samples to decipher freshwater sources (river water, sea-ice melt). River water and sea-ice melt contribute to the fresh surface mixed layer mainly present along the eastside of the islands, and is likely preventing downward mobility of dense briny waters that is locally made and advected in. In addition, the river water inventory increases as winter progresses, an unexpected result since the natural cadence of river runoff is low during the winter months. May 2018 Master Thesis Belcher Islands Hudson Bay ice core inuit Sanikiluaq Sea ice MSpace at the University of Manitoba Belcher ENVELOPE(-94.172,-94.172,57.936,57.936) Belcher Islands ENVELOPE(-79.250,-79.250,56.184,56.184) Hudson Hudson Bay Sanikiluaq ENVELOPE(-79.226,-79.226,56.541,56.541) |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Hudson Bay freshwater-marine coupling |
spellingShingle |
Hudson Bay freshwater-marine coupling Eastwood, Rosemary Ann Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay |
topic_facet |
Hudson Bay freshwater-marine coupling |
description |
The freshwater budget of Hudson Bay is governed by complex interactions between terrestrial, marine, and atmospheric systems. Inuit in Sanikiluaq have observed rapid freezing of flaw leads and polynyas around the Belcher Islands (southeast Hudson Bay) and have been seeking answers about what is contributing to this change. This study provides the first winter oceanographic observations of spatial and temporal distribution of freshwater in this region, using tandem measurements of salinity and δ18O from water and ice core samples to decipher freshwater sources (river water, sea-ice melt). River water and sea-ice melt contribute to the fresh surface mixed layer mainly present along the eastside of the islands, and is likely preventing downward mobility of dense briny waters that is locally made and advected in. In addition, the river water inventory increases as winter progresses, an unexpected result since the natural cadence of river runoff is low during the winter months. May 2018 |
author2 |
Kuzyk, Zou Zou (Geological Sciences) Barber, David (Environment & Geography) Ehn, Jens (Environment & Geography) MacDonald, Rob (Environment & Geography) Heath, Joel |
format |
Master Thesis |
author |
Eastwood, Rosemary Ann |
author_facet |
Eastwood, Rosemary Ann |
author_sort |
Eastwood, Rosemary Ann |
title |
Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay |
title_short |
Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay |
title_full |
Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay |
title_fullStr |
Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay |
title_full_unstemmed |
Physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the Belcher Islands, southeast Hudson Bay |
title_sort |
physical properties and isotopic characteristics of the winter water column and landfast sea-ice surrounding the belcher islands, southeast hudson bay |
publishDate |
2018 |
url |
http://hdl.handle.net/1993/32997 |
long_lat |
ENVELOPE(-94.172,-94.172,57.936,57.936) ENVELOPE(-79.250,-79.250,56.184,56.184) ENVELOPE(-79.226,-79.226,56.541,56.541) |
geographic |
Belcher Belcher Islands Hudson Hudson Bay Sanikiluaq |
geographic_facet |
Belcher Belcher Islands Hudson Hudson Bay Sanikiluaq |
genre |
Belcher Islands Hudson Bay ice core inuit Sanikiluaq Sea ice |
genre_facet |
Belcher Islands Hudson Bay ice core inuit Sanikiluaq Sea ice |
op_relation |
http://hdl.handle.net/1993/32997 |
op_rights |
open access |
_version_ |
1769004792752898048 |