FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology)
Within existing ice covers, we found fluid motion can also be driven by freezing-induced convection. Surface snow-slush and near-surface highly porous layers were found in the pack ice at Ice Station Weddell in the western Weddell Sea at end of summer and examined for physical and biological process...
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ftnipr:oai:nipr.repo.nii.ac.jp:00005303 2023-05-15T13:46:39+02:00 FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) Stephen F. ACKLEY Christian H. FRITSEN Victoria I. LYTLES Cornelius W. SULLIVAN 1996-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5303 http://id.nii.ac.jp/1291/00005303/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5303&item_no=1&attribute_id=18&file_no=1 en eng Proceeding CRREL Department of Biological Science, USC Antarctic CRC, University of Tasmania Department of Biological Science, USC:(Present address)Director, Office of Polar Programs National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5303 http://id.nii.ac.jp/1291/00005303/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 9, 45-59(1996-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5303&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1996 ftnipr 2023-02-18T20:11:55Z Within existing ice covers, we found fluid motion can also be driven by freezing-induced convection. Surface snow-slush and near-surface highly porous layers were found in the pack ice at Ice Station Weddell in the western Weddell Sea at end of summer and examined for physical and biological processes. Convective fluid motion, driven by brine rejection from the ice freezing from above as air temperatures dropped, replaced nutrient depleted waters in the layers with nutrient rich sea water from below. The upwelling nutrients fueled autumn blooms of algae in second-year ice in the near surface regions of the ice cover where sufficient light is also available. Both the timing and location of these blooms within the ice cover are unlike the bottom spring blooms of sea ice algae previously observed. Report Antarc* Antarctic ice algae Polar Biology Proceedings of the NIPR Symposium on Polar Biology Sea ice Weddell Sea National Institute of Polar Research Repository, Japan Antarctic Weddell Sea Weddell |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
Within existing ice covers, we found fluid motion can also be driven by freezing-induced convection. Surface snow-slush and near-surface highly porous layers were found in the pack ice at Ice Station Weddell in the western Weddell Sea at end of summer and examined for physical and biological processes. Convective fluid motion, driven by brine rejection from the ice freezing from above as air temperatures dropped, replaced nutrient depleted waters in the layers with nutrient rich sea water from below. The upwelling nutrients fueled autumn blooms of algae in second-year ice in the near surface regions of the ice cover where sufficient light is also available. Both the timing and location of these blooms within the ice cover are unlike the bottom spring blooms of sea ice algae previously observed. |
format |
Report |
author |
Stephen F. ACKLEY Christian H. FRITSEN Victoria I. LYTLES Cornelius W. SULLIVAN |
spellingShingle |
Stephen F. ACKLEY Christian H. FRITSEN Victoria I. LYTLES Cornelius W. SULLIVAN FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) |
author_facet |
Stephen F. ACKLEY Christian H. FRITSEN Victoria I. LYTLES Cornelius W. SULLIVAN |
author_sort |
Stephen F. ACKLEY |
title |
FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) |
title_short |
FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) |
title_full |
FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) |
title_fullStr |
FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) |
title_full_unstemmed |
FREEZING DRIVEN UPWELLING IN ANTARCTIC SEA ICE BIOLOGICAL SYSTEMS (17th Symposium on Polar Biology) |
title_sort |
freezing driven upwelling in antarctic sea ice biological systems (17th symposium on polar biology) |
publisher |
Proceeding |
publishDate |
1996 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5303 http://id.nii.ac.jp/1291/00005303/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5303&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic ice algae Polar Biology Proceedings of the NIPR Symposium on Polar Biology Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic ice algae Polar Biology Proceedings of the NIPR Symposium on Polar Biology Sea ice Weddell Sea |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5303 http://id.nii.ac.jp/1291/00005303/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 9, 45-59(1996-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5303&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766244924367306752 |