Evidence of dense water overflow on the Ross Sea shelf-break
This paper presents the results of the analysis of hydrological data of a 5-day mesoscale experiment (53 CTD casts) conducted during the XIIIth Italian Expedition to Antarctica (1997–98 cruise) in the framework of the CLIMA (Climatic Longterm Interaction for the Mass balance in Antarctica) Project...
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2003
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Online Access: | https://www.openaccessrepository.it/record/162258 https://doi.org/10.1017/s0954102002000068 |
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ftopenaccessrep:oai:zenodo.org:162258 2024-05-12T07:54:48+00:00 Evidence of dense water overflow on the Ross Sea shelf-break BERGAMASCO, A. DEFENDI, V. ZAMBIANCHI, E. SPEZIE, G. 2003-02-25 https://www.openaccessrepository.it/record/162258 https://doi.org/10.1017/s0954102002000068 eng eng url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/162258 doi:10.1017/s0954102002000068 info:eu-repo/semantics/openAccess Geology Ecology Evolution Behavior and Systematics Oceanography info:eu-repo/semantics/article publication-article 2003 ftopenaccessrep https://doi.org/10.1017/s0954102002000068 2024-04-17T15:12:25Z This paper presents the results of the analysis of hydrological data of a 5-day mesoscale experiment (53 CTD casts) conducted during the XIIIth Italian Expedition to Antarctica (1997–98 cruise) in the framework of the CLIMA (Climatic Longterm Interaction for the Mass balance in Antarctica) Project of the Italian National Programme for Antarctic Research (PNRA). The experiment site was chosen for studying the dense water overflow in relation to the shelf-break in the central Ross Sea, after a large-scale synoptic survey, aimed to detect the general hydrological characteristics of the basin. A classical θ/S analysis was carried out for better understanding of the shelf-slope connection and the interactions between the water masses of this zone: the Circumpolar Deep Water (CDW) coming from the oceanic domain and the Ice Shelf Water (ISW) spreading from the Ross Ice Shelf (RIS) edge. Our results show the evidence of an overflow of dense water, originated on the continental shelf, on the shelf-break. This supercold water signal is found on the continental slope down to 1200 m depth. The shape of this tongue of modified ISW, whose thickness reaches up to 100 m, is very narrow, suggesting that the overflow occurs in very localized areas. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Shelf Ross Ice Shelf Ross Sea Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository Antarctic Ross Sea Ross Ice Shelf Antarctic Science 14 3 271 277 |
institution |
Open Polar |
collection |
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
op_collection_id |
ftopenaccessrep |
language |
English |
topic |
Geology Ecology Evolution Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology Evolution Behavior and Systematics Oceanography BERGAMASCO, A. DEFENDI, V. ZAMBIANCHI, E. SPEZIE, G. Evidence of dense water overflow on the Ross Sea shelf-break |
topic_facet |
Geology Ecology Evolution Behavior and Systematics Oceanography |
description |
This paper presents the results of the analysis of hydrological data of a 5-day mesoscale experiment (53 CTD casts) conducted during the XIIIth Italian Expedition to Antarctica (1997–98 cruise) in the framework of the CLIMA (Climatic Longterm Interaction for the Mass balance in Antarctica) Project of the Italian National Programme for Antarctic Research (PNRA). The experiment site was chosen for studying the dense water overflow in relation to the shelf-break in the central Ross Sea, after a large-scale synoptic survey, aimed to detect the general hydrological characteristics of the basin. A classical θ/S analysis was carried out for better understanding of the shelf-slope connection and the interactions between the water masses of this zone: the Circumpolar Deep Water (CDW) coming from the oceanic domain and the Ice Shelf Water (ISW) spreading from the Ross Ice Shelf (RIS) edge. Our results show the evidence of an overflow of dense water, originated on the continental shelf, on the shelf-break. This supercold water signal is found on the continental slope down to 1200 m depth. The shape of this tongue of modified ISW, whose thickness reaches up to 100 m, is very narrow, suggesting that the overflow occurs in very localized areas. |
format |
Article in Journal/Newspaper |
author |
BERGAMASCO, A. DEFENDI, V. ZAMBIANCHI, E. SPEZIE, G. |
author_facet |
BERGAMASCO, A. DEFENDI, V. ZAMBIANCHI, E. SPEZIE, G. |
author_sort |
BERGAMASCO, A. |
title |
Evidence of dense water overflow on the Ross Sea shelf-break |
title_short |
Evidence of dense water overflow on the Ross Sea shelf-break |
title_full |
Evidence of dense water overflow on the Ross Sea shelf-break |
title_fullStr |
Evidence of dense water overflow on the Ross Sea shelf-break |
title_full_unstemmed |
Evidence of dense water overflow on the Ross Sea shelf-break |
title_sort |
evidence of dense water overflow on the ross sea shelf-break |
publishDate |
2003 |
url |
https://www.openaccessrepository.it/record/162258 https://doi.org/10.1017/s0954102002000068 |
geographic |
Antarctic Ross Sea Ross Ice Shelf |
geographic_facet |
Antarctic Ross Sea Ross Ice Shelf |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ross Ice Shelf Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ross Ice Shelf Ross Sea |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/162258 doi:10.1017/s0954102002000068 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/s0954102002000068 |
container_title |
Antarctic Science |
container_volume |
14 |
container_issue |
3 |
container_start_page |
271 |
op_container_end_page |
277 |
_version_ |
1798852399653191680 |