Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns
In recent decades, the Arctic marine environment has undergone a rapid change as represented by the dramatic reduction in sea ice extent and volume. Despite the recent decline in the Arctic multiyear ice cover, the Arctic and sub-Arctic regions continue to remain seasonally ice-covered. The annual c...
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Online Access: | http://hdl.handle.net/1993/35966 |
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/35966 2023-06-18T03:38:46+02:00 Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns Petrusevich, Vladislav Ehn, Jens (Environment and Geography) Dmitrenko, Igor (Environment and Geography/CEOS) Barber, David (Environment and Geography) Lobb, David (Soil Science) Cottier, Finlo (Scottish Association for Marine Science) 2021-08-24T17:28:25Z application/pdf http://hdl.handle.net/1993/35966 eng eng http://hdl.handle.net/1993/35966 open access Oceanographic mooring time-series Diel vertical migration Zooplankton Acoustic backscatter Water dynamics Land-fast sea ice Polar night Moonlight Polynya-enhanced fjord circulation ADCP Internal waves Semidiurnal tides Tidal analysis Wavelet Freshwater discharge Remote sensing SAR imaging Hudson Bay Arctic Ocean doctoral thesis 2021 ftunivmanitoba 2023-06-04T17:40:33Z In recent decades, the Arctic marine environment has undergone a rapid change as represented by the dramatic reduction in sea ice extent and volume. Despite the recent decline in the Arctic multiyear ice cover, the Arctic and sub-Arctic regions continue to remain seasonally ice-covered. The annual cycle of growth and decay of the seasonal sea ice cover has far-reaching impacts on oceanographic conditions in the Arctic estuarine environments. Due to complicated and costly logistics associated with time-series observations in ice-infested waters, oceanographic moorings proved to be the most reliable and often the only possible method for studying temporal phenomena occurring over the annual cycle in Arctic marine environments. The broadscale goal for this study was to investigate how geophysical oceanographic processes characteristic of the Arctic and sub-Arctic estuarine environments (i.e. presence of seasonal snow and sea ice cover, estuarine and tidal water dynamics, atmospheric forcing and unique under-ice light regime) affect biological processes like zooplankton distribution and DVM throughout long-term mooring deployment. In this Ph.D. thesis, I present field observations relying on mooring observations conducted at three ice-covered locations, each presented in an individual chapter: (1) Young Sound (2014- 2014), which is a fjord in Southeast Greenland, (2) Belcher Islands (2013-2016) in the subarctic Southeastern Hudson Bay, and (3) Western Hudson Bay north of Churchill (2016-2017). From the acquired mooring records, we observed the influence of solar and lunar light and water dynamics on the vertical migration of zooplankton. At locations 1 and 3, we observed modifications or the complete disruption of DVM during highly energetic current and spring tide events. The mooring deployed at location 2 recorded oscillations of temperature and salinity throughout the whole water column, which we attributed to vertical displacement water parcels caused by internal tidal waves. The combination of winter ... Doctoral or Postdoctoral Thesis Arctic Arctic Ocean Belcher Islands Greenland Hudson Bay polar night Sea ice Subarctic Zooplankton MSpace at the University of Manitoba Arctic Arctic Ocean Hudson Bay Greenland Hudson Belcher ENVELOPE(-94.172,-94.172,57.936,57.936) Belcher Islands ENVELOPE(-79.250,-79.250,56.184,56.184) |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Oceanographic mooring time-series Diel vertical migration Zooplankton Acoustic backscatter Water dynamics Land-fast sea ice Polar night Moonlight Polynya-enhanced fjord circulation ADCP Internal waves Semidiurnal tides Tidal analysis Wavelet Freshwater discharge Remote sensing SAR imaging Hudson Bay Arctic Ocean |
spellingShingle |
Oceanographic mooring time-series Diel vertical migration Zooplankton Acoustic backscatter Water dynamics Land-fast sea ice Polar night Moonlight Polynya-enhanced fjord circulation ADCP Internal waves Semidiurnal tides Tidal analysis Wavelet Freshwater discharge Remote sensing SAR imaging Hudson Bay Arctic Ocean Petrusevich, Vladislav Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns |
topic_facet |
Oceanographic mooring time-series Diel vertical migration Zooplankton Acoustic backscatter Water dynamics Land-fast sea ice Polar night Moonlight Polynya-enhanced fjord circulation ADCP Internal waves Semidiurnal tides Tidal analysis Wavelet Freshwater discharge Remote sensing SAR imaging Hudson Bay Arctic Ocean |
description |
In recent decades, the Arctic marine environment has undergone a rapid change as represented by the dramatic reduction in sea ice extent and volume. Despite the recent decline in the Arctic multiyear ice cover, the Arctic and sub-Arctic regions continue to remain seasonally ice-covered. The annual cycle of growth and decay of the seasonal sea ice cover has far-reaching impacts on oceanographic conditions in the Arctic estuarine environments. Due to complicated and costly logistics associated with time-series observations in ice-infested waters, oceanographic moorings proved to be the most reliable and often the only possible method for studying temporal phenomena occurring over the annual cycle in Arctic marine environments. The broadscale goal for this study was to investigate how geophysical oceanographic processes characteristic of the Arctic and sub-Arctic estuarine environments (i.e. presence of seasonal snow and sea ice cover, estuarine and tidal water dynamics, atmospheric forcing and unique under-ice light regime) affect biological processes like zooplankton distribution and DVM throughout long-term mooring deployment. In this Ph.D. thesis, I present field observations relying on mooring observations conducted at three ice-covered locations, each presented in an individual chapter: (1) Young Sound (2014- 2014), which is a fjord in Southeast Greenland, (2) Belcher Islands (2013-2016) in the subarctic Southeastern Hudson Bay, and (3) Western Hudson Bay north of Churchill (2016-2017). From the acquired mooring records, we observed the influence of solar and lunar light and water dynamics on the vertical migration of zooplankton. At locations 1 and 3, we observed modifications or the complete disruption of DVM during highly energetic current and spring tide events. The mooring deployed at location 2 recorded oscillations of temperature and salinity throughout the whole water column, which we attributed to vertical displacement water parcels caused by internal tidal waves. The combination of winter ... |
author2 |
Ehn, Jens (Environment and Geography) Dmitrenko, Igor (Environment and Geography/CEOS) Barber, David (Environment and Geography) Lobb, David (Soil Science) Cottier, Finlo (Scottish Association for Marine Science) |
format |
Doctoral or Postdoctoral Thesis |
author |
Petrusevich, Vladislav |
author_facet |
Petrusevich, Vladislav |
author_sort |
Petrusevich, Vladislav |
title |
Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns |
title_short |
Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns |
title_full |
Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns |
title_fullStr |
Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns |
title_full_unstemmed |
Mooring time-series observations of water dynamics in ice-covered Arctic estuarine systems: an analysis of vertical motion cycles/patterns |
title_sort |
mooring time-series observations of water dynamics in ice-covered arctic estuarine systems: an analysis of vertical motion cycles/patterns |
publishDate |
2021 |
url |
http://hdl.handle.net/1993/35966 |
long_lat |
ENVELOPE(-94.172,-94.172,57.936,57.936) ENVELOPE(-79.250,-79.250,56.184,56.184) |
geographic |
Arctic Arctic Ocean Hudson Bay Greenland Hudson Belcher Belcher Islands |
geographic_facet |
Arctic Arctic Ocean Hudson Bay Greenland Hudson Belcher Belcher Islands |
genre |
Arctic Arctic Ocean Belcher Islands Greenland Hudson Bay polar night Sea ice Subarctic Zooplankton |
genre_facet |
Arctic Arctic Ocean Belcher Islands Greenland Hudson Bay polar night Sea ice Subarctic Zooplankton |
op_relation |
http://hdl.handle.net/1993/35966 |
op_rights |
open access |
_version_ |
1769003637461221376 |