Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica
The Regional Ocean Modeling System (ROMS) is employed to create a three-dimensional numerical model of the summer circulation in the Prydz Bay region, Antarctica. Consistent with the currents measured using an underway acoustic Doppler current profiler during a Chinese cruise, the simulated current...
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Polar Research Institute of China - PRIC
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ftarcticportal:oai:generic.eprints.org:2782 2023-12-17T10:17:42+01:00 Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica Yuxin, Han Jiuxin, Shi Saisai, Hou Changhao, Xiao 2022-06 application/pdf http://library.arcticportal.org/2782/ http://library.arcticportal.org/2782/1/A2202003.pdf en eng Polar Research Institute of China - PRIC http://library.arcticportal.org/2782/1/A2202003.pdf Yuxin, Han and Jiuxin, Shi and Saisai, Hou and Changhao, Xiao (2022) Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica. Advances in Polar Science, 33 (2). pp. 135-144. Cryosphere Article PeerReviewed 2022 ftarcticportal 2023-11-22T23:54:40Z The Regional Ocean Modeling System (ROMS) is employed to create a three-dimensional numerical model of the summer circulation in the Prydz Bay region, Antarctica. Consistent with the currents measured using an underway acoustic Doppler current profiler during a Chinese cruise, the simulated current field illustrates the major features of the Prydz Bay circulation, including the Antarctic Slope Current (ASC) along the continental shelf break, the cyclonic Prydz Bay Gyre, and the Prydz Bay Eastern Coastal Current (PBECC). The effects of grounding icebergs D15 and B15 on the circulation in Prydz Bay are investigated via numerical simulations. The results indicate that these giant grounding icebergs substantially affect the flows into and within the bay, which may differ with the different grounding locations. As grounding iceberg D15 is located close to the southwestern part of the West Ice Shelf (WIS), it cuts off the coastal current along the outer edge of the WIS, and the ASC can only enter Prydz Bay from the west side of iceberg D15, whereupon it becomes a main source of the PBECC. Iceberg D15 also weakens the circulation in the bay in general. The relatively small iceberg B15 entered Prydz Bay from 2007 to 2009 and grounded on the southwestern section of the Four Ladies Bank. The numerical experiments indicate that iceberg B15 guides the ASC flowing into the bay around its west side and reduces the width of the inflow on the eastern side of the Prydz Bay Channel. The grounding of iceberg B15 has also led to adjustments of the circulation within the bay, among which the most significant is that the outflow along the western flank of Fram Bank has shifted to the west and become more intensive. Article in Journal/Newspaper Advances in Polar Science Antarc* Antarctic Antarctica Ice Shelf Iceberg* Polar Science Polar Science Prydz Bay West Ice Shelf Arctic Portal Library Antarctic The Antarctic Prydz Bay West Ice Shelf ENVELOPE(85.000,85.000,-67.000,-67.000) Four Ladies Bank ENVELOPE(77.500,77.500,-67.500,-67.500) Fram Bank ENVELOPE(70.000,70.000,-67.300,-67.300) |
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Open Polar |
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Arctic Portal Library |
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ftarcticportal |
language |
English |
topic |
Cryosphere |
spellingShingle |
Cryosphere Yuxin, Han Jiuxin, Shi Saisai, Hou Changhao, Xiao Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica |
topic_facet |
Cryosphere |
description |
The Regional Ocean Modeling System (ROMS) is employed to create a three-dimensional numerical model of the summer circulation in the Prydz Bay region, Antarctica. Consistent with the currents measured using an underway acoustic Doppler current profiler during a Chinese cruise, the simulated current field illustrates the major features of the Prydz Bay circulation, including the Antarctic Slope Current (ASC) along the continental shelf break, the cyclonic Prydz Bay Gyre, and the Prydz Bay Eastern Coastal Current (PBECC). The effects of grounding icebergs D15 and B15 on the circulation in Prydz Bay are investigated via numerical simulations. The results indicate that these giant grounding icebergs substantially affect the flows into and within the bay, which may differ with the different grounding locations. As grounding iceberg D15 is located close to the southwestern part of the West Ice Shelf (WIS), it cuts off the coastal current along the outer edge of the WIS, and the ASC can only enter Prydz Bay from the west side of iceberg D15, whereupon it becomes a main source of the PBECC. Iceberg D15 also weakens the circulation in the bay in general. The relatively small iceberg B15 entered Prydz Bay from 2007 to 2009 and grounded on the southwestern section of the Four Ladies Bank. The numerical experiments indicate that iceberg B15 guides the ASC flowing into the bay around its west side and reduces the width of the inflow on the eastern side of the Prydz Bay Channel. The grounding of iceberg B15 has also led to adjustments of the circulation within the bay, among which the most significant is that the outflow along the western flank of Fram Bank has shifted to the west and become more intensive. |
format |
Article in Journal/Newspaper |
author |
Yuxin, Han Jiuxin, Shi Saisai, Hou Changhao, Xiao |
author_facet |
Yuxin, Han Jiuxin, Shi Saisai, Hou Changhao, Xiao |
author_sort |
Yuxin, Han |
title |
Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica |
title_short |
Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica |
title_full |
Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica |
title_fullStr |
Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica |
title_full_unstemmed |
Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica |
title_sort |
numerical simulation of the dynamic effects of grounding icebergs on summer circulation in prydz bay, antarctica |
publisher |
Polar Research Institute of China - PRIC |
publishDate |
2022 |
url |
http://library.arcticportal.org/2782/ http://library.arcticportal.org/2782/1/A2202003.pdf |
long_lat |
ENVELOPE(85.000,85.000,-67.000,-67.000) ENVELOPE(77.500,77.500,-67.500,-67.500) ENVELOPE(70.000,70.000,-67.300,-67.300) |
geographic |
Antarctic The Antarctic Prydz Bay West Ice Shelf Four Ladies Bank Fram Bank |
geographic_facet |
Antarctic The Antarctic Prydz Bay West Ice Shelf Four Ladies Bank Fram Bank |
genre |
Advances in Polar Science Antarc* Antarctic Antarctica Ice Shelf Iceberg* Polar Science Polar Science Prydz Bay West Ice Shelf |
genre_facet |
Advances in Polar Science Antarc* Antarctic Antarctica Ice Shelf Iceberg* Polar Science Polar Science Prydz Bay West Ice Shelf |
op_relation |
http://library.arcticportal.org/2782/1/A2202003.pdf Yuxin, Han and Jiuxin, Shi and Saisai, Hou and Changhao, Xiao (2022) Numerical simulation of the dynamic effects of grounding icebergs on summer circulation in Prydz Bay, Antarctica. Advances in Polar Science, 33 (2). pp. 135-144. |
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1785584417339604992 |