Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland
Petermann Glacier drains about 4% of the Greenland ice sheet area, with at least 80% of its mass loss through basal melting of the floating ice shelf. Utilizing a high-resolution coupled ice-shelf-ocean model, we aim at understanding the ocean circulation in Nares Strait and the mechanism of oceanic...
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UiT Norges arktiske universitet
2017
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Online Access: | https://hdl.handle.net/10037/11894 |
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ftunivtroemsoe:oai:munin.uit.no:10037/11894 2023-05-15T16:21:14+02:00 Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland Bao, Weiyang 2017-05-15 https://hdl.handle.net/10037/11894 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway https://hdl.handle.net/10037/11894 openAccess Copyright 2017 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 FYS-3900 Master thesis Mastergradsoppgave 2017 ftunivtroemsoe 2021-06-25T17:55:34Z Petermann Glacier drains about 4% of the Greenland ice sheet area, with at least 80% of its mass loss through basal melting of the floating ice shelf. Utilizing a high-resolution coupled ice-shelf-ocean model, we aim at understanding the ocean circulation in Nares Strait and the mechanism of oceanic heat supply below the ice shelf as well as quantifying the basal mass loss. The numerical model is based on the Finite-Volume Community Ocean Model (FVCOM), taking advantage of its flexible spatial resolution that can follow the topography. A regional model domain has been set up, which spans the greater Nares Strait region and covers Petermann Fjord with 200-m horizontal resolution and includes the Petermann Glacier geometry. As a first step, we focus on the role of tides for transporting ocean water into the ice-shelf cavity. Tidal simulations are validated with available observations, demonstrating the capability of FVCOM in reproducing the tidal current pattern in Nares Strait. Lagrangian particle trajectories are computed to explore the water exchange in Petermann Fjord. It is found that tidal oscillations in Nares Strait lead to a residual circulation in the fjord and inside the ice-shelf cavity. These results suggest that tidal dynamics plays an important role in modulating regional circulation in Petermann Fjord and heat transport to Petermann Ice Shelf. Master Thesis glacier Greenland Ice Sheet Ice Shelf Nares strait Petermann Fjord Petermann glacier University of Tromsø: Munin Open Research Archive Greenland Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Petermann Fjord ENVELOPE(-61.500,-61.500,81.167,81.167) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 FYS-3900 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 FYS-3900 Bao, Weiyang Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 FYS-3900 |
description |
Petermann Glacier drains about 4% of the Greenland ice sheet area, with at least 80% of its mass loss through basal melting of the floating ice shelf. Utilizing a high-resolution coupled ice-shelf-ocean model, we aim at understanding the ocean circulation in Nares Strait and the mechanism of oceanic heat supply below the ice shelf as well as quantifying the basal mass loss. The numerical model is based on the Finite-Volume Community Ocean Model (FVCOM), taking advantage of its flexible spatial resolution that can follow the topography. A regional model domain has been set up, which spans the greater Nares Strait region and covers Petermann Fjord with 200-m horizontal resolution and includes the Petermann Glacier geometry. As a first step, we focus on the role of tides for transporting ocean water into the ice-shelf cavity. Tidal simulations are validated with available observations, demonstrating the capability of FVCOM in reproducing the tidal current pattern in Nares Strait. Lagrangian particle trajectories are computed to explore the water exchange in Petermann Fjord. It is found that tidal oscillations in Nares Strait lead to a residual circulation in the fjord and inside the ice-shelf cavity. These results suggest that tidal dynamics plays an important role in modulating regional circulation in Petermann Fjord and heat transport to Petermann Ice Shelf. |
format |
Master Thesis |
author |
Bao, Weiyang |
author_facet |
Bao, Weiyang |
author_sort |
Bao, Weiyang |
title |
Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland |
title_short |
Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland |
title_full |
Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland |
title_fullStr |
Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland |
title_full_unstemmed |
Modeling Ice-shelf Ocean Interaction at Petermann Glacier, Greenland |
title_sort |
modeling ice-shelf ocean interaction at petermann glacier, greenland |
publisher |
UiT Norges arktiske universitet |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/11894 |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) ENVELOPE(-61.500,-61.500,81.167,81.167) |
geographic |
Greenland Nares Petermann Fjord |
geographic_facet |
Greenland Nares Petermann Fjord |
genre |
glacier Greenland Ice Sheet Ice Shelf Nares strait Petermann Fjord Petermann glacier |
genre_facet |
glacier Greenland Ice Sheet Ice Shelf Nares strait Petermann Fjord Petermann glacier |
op_relation |
https://hdl.handle.net/10037/11894 |
op_rights |
openAccess Copyright 2017 The Author(s) |
_version_ |
1766009237451833344 |