Tidally-generated internal waves in Southeast Hudson Bay
The location of the amphidromic point of the M2 tide in Hudson Bay roughly coincides with Belcher Islands, a region where the surface mixed layer stays relatively fresh throughout summer and winter due to significant ice melt and river discharge. High-resolution satellite radar imagery for the ice-f...
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Language: | English |
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2020
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Online Access: | http://hdl.handle.net/1993/34786 https://doi.org/10.1016/j.csr.2018.08.002 |
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/34786 2023-06-18T03:39:41+02:00 Tidally-generated internal waves in Southeast Hudson Bay Petrusevich, Vladislav Dmitrenko, Igor Kozlov, Igor Kirillov, Sergey A. Kuzyk, Zou Zou A. Komarov, Alexander Heath, Joel Barber, David Ehn, Jens 2020-07-17T17:02:02Z application/pdf http://hdl.handle.net/1993/34786 https://doi.org/10.1016/j.csr.2018.08.002 eng eng Elsevier Ltd. Petrusevich, V. Y., Dmitrenko, I. A., Kozlov, I. E., Kirillov, S. A., Kuzyk, Z. Z. A., Komarov, A. S., Heath, J. P., Barber, D. G., Ehn, J. K., 2018. Tidally-generated internal waves in Southeast Hudson Bay. Cont. Shelf Res. 167, 65–76. https://doi.org/10.1016/j.csr.2018.08.002. http://hdl.handle.net/1993/34786 doi:10.1016/j.csr.2018.08.002 open access internal waves semidiurnal tides freshwater discharge water dynamics land-fast sea ice remote sensing SAR imaging Hudson Bay Arctic Ocean Technical Report 2020 ftunivmanitoba https://doi.org/10.1016/j.csr.2018.08.002 2023-06-04T17:37:46Z The location of the amphidromic point of the M2 tide in Hudson Bay roughly coincides with Belcher Islands, a region where the surface mixed layer stays relatively fresh throughout summer and winter due to significant ice melt and river discharge. High-resolution satellite radar imagery for the ice-free season revealed that the coastal region in the south-east Belcher Islands is a hot spot for short-period internal wave activity. For a first investigation of tidal dynamics in the region, we took advantage of the sea ice platform to deploy an ice-tethered mooring consisting of nine conductivity and temperature sensors and an acoustic Doppler current profiler. The mooring was deployed at 65m depth in January–March 2014 in a narrow channel between Broomfield and O′Leary islands located in the south-east tip of the Belcher Islands group in Hudson Bay (56°20′N, 79°30′W), northeast Canada. The surface mixed layer under the land-fast ice in this area stays relatively fresh through winter presumably because of significant winter river discharge in nearby James Bay. The mooring recorded oscillations of temperature and salinity throughout the whole water column, which were attributed to vertical displacement caused by internal tidal waves. The tidal harmonic analysis performed for the M2 tidal constituent showed the dominance of the baroclinic tide with maximum velocity amplitudes at the surface and decreasing with depth. Vertical displacements of water parcels derived from both temperature and salinity were statistically similar and displayed the maximum values of 11.9m at 35m (instrument depth). The combination of winter hydrographic data and summer satellite observations confirmed that the observed internal waves were generated by the interaction of strong tides, typical for Hudson Bay, with highly variable bottom topography southeast of the Belcher Islands archipelago. Natural Sciences and Engineering Research Council (NSERC), Canada, Discovery Grant program, the ArcticNet Network of Centres of Excellence, Canada, ... Report Arctic Arctic Ocean ArcticNet Belcher Islands Hudson Bay Sea ice James Bay MSpace at the University of Manitoba Arctic Arctic Ocean Belcher ENVELOPE(-94.172,-94.172,57.936,57.936) Belcher Islands ENVELOPE(-79.250,-79.250,56.184,56.184) Canada Hudson Hudson Bay Winter River ENVELOPE(-113.003,-113.003,64.501,64.501) Continental Shelf Research 167 65 76 |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
internal waves semidiurnal tides freshwater discharge water dynamics land-fast sea ice remote sensing SAR imaging Hudson Bay Arctic Ocean |
spellingShingle |
internal waves semidiurnal tides freshwater discharge water dynamics land-fast sea ice remote sensing SAR imaging Hudson Bay Arctic Ocean Petrusevich, Vladislav Dmitrenko, Igor Kozlov, Igor Kirillov, Sergey A. Kuzyk, Zou Zou A. Komarov, Alexander Heath, Joel Barber, David Ehn, Jens Tidally-generated internal waves in Southeast Hudson Bay |
topic_facet |
internal waves semidiurnal tides freshwater discharge water dynamics land-fast sea ice remote sensing SAR imaging Hudson Bay Arctic Ocean |
description |
The location of the amphidromic point of the M2 tide in Hudson Bay roughly coincides with Belcher Islands, a region where the surface mixed layer stays relatively fresh throughout summer and winter due to significant ice melt and river discharge. High-resolution satellite radar imagery for the ice-free season revealed that the coastal region in the south-east Belcher Islands is a hot spot for short-period internal wave activity. For a first investigation of tidal dynamics in the region, we took advantage of the sea ice platform to deploy an ice-tethered mooring consisting of nine conductivity and temperature sensors and an acoustic Doppler current profiler. The mooring was deployed at 65m depth in January–March 2014 in a narrow channel between Broomfield and O′Leary islands located in the south-east tip of the Belcher Islands group in Hudson Bay (56°20′N, 79°30′W), northeast Canada. The surface mixed layer under the land-fast ice in this area stays relatively fresh through winter presumably because of significant winter river discharge in nearby James Bay. The mooring recorded oscillations of temperature and salinity throughout the whole water column, which were attributed to vertical displacement caused by internal tidal waves. The tidal harmonic analysis performed for the M2 tidal constituent showed the dominance of the baroclinic tide with maximum velocity amplitudes at the surface and decreasing with depth. Vertical displacements of water parcels derived from both temperature and salinity were statistically similar and displayed the maximum values of 11.9m at 35m (instrument depth). The combination of winter hydrographic data and summer satellite observations confirmed that the observed internal waves were generated by the interaction of strong tides, typical for Hudson Bay, with highly variable bottom topography southeast of the Belcher Islands archipelago. Natural Sciences and Engineering Research Council (NSERC), Canada, Discovery Grant program, the ArcticNet Network of Centres of Excellence, Canada, ... |
format |
Report |
author |
Petrusevich, Vladislav Dmitrenko, Igor Kozlov, Igor Kirillov, Sergey A. Kuzyk, Zou Zou A. Komarov, Alexander Heath, Joel Barber, David Ehn, Jens |
author_facet |
Petrusevich, Vladislav Dmitrenko, Igor Kozlov, Igor Kirillov, Sergey A. Kuzyk, Zou Zou A. Komarov, Alexander Heath, Joel Barber, David Ehn, Jens |
author_sort |
Petrusevich, Vladislav |
title |
Tidally-generated internal waves in Southeast Hudson Bay |
title_short |
Tidally-generated internal waves in Southeast Hudson Bay |
title_full |
Tidally-generated internal waves in Southeast Hudson Bay |
title_fullStr |
Tidally-generated internal waves in Southeast Hudson Bay |
title_full_unstemmed |
Tidally-generated internal waves in Southeast Hudson Bay |
title_sort |
tidally-generated internal waves in southeast hudson bay |
publisher |
Elsevier Ltd. |
publishDate |
2020 |
url |
http://hdl.handle.net/1993/34786 https://doi.org/10.1016/j.csr.2018.08.002 |
long_lat |
ENVELOPE(-94.172,-94.172,57.936,57.936) ENVELOPE(-79.250,-79.250,56.184,56.184) ENVELOPE(-113.003,-113.003,64.501,64.501) |
geographic |
Arctic Arctic Ocean Belcher Belcher Islands Canada Hudson Hudson Bay Winter River |
geographic_facet |
Arctic Arctic Ocean Belcher Belcher Islands Canada Hudson Hudson Bay Winter River |
genre |
Arctic Arctic Ocean ArcticNet Belcher Islands Hudson Bay Sea ice James Bay |
genre_facet |
Arctic Arctic Ocean ArcticNet Belcher Islands Hudson Bay Sea ice James Bay |
op_relation |
Petrusevich, V. Y., Dmitrenko, I. A., Kozlov, I. E., Kirillov, S. A., Kuzyk, Z. Z. A., Komarov, A. S., Heath, J. P., Barber, D. G., Ehn, J. K., 2018. Tidally-generated internal waves in Southeast Hudson Bay. Cont. Shelf Res. 167, 65–76. https://doi.org/10.1016/j.csr.2018.08.002. http://hdl.handle.net/1993/34786 doi:10.1016/j.csr.2018.08.002 |
op_rights |
open access |
op_doi |
https://doi.org/10.1016/j.csr.2018.08.002 |
container_title |
Continental Shelf Research |
container_volume |
167 |
container_start_page |
65 |
op_container_end_page |
76 |
_version_ |
1769004406602203136 |