High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume
During the second cruise of the AnSlope project, the hydrography and velocity fields within a descending gravity plume in the northwestern Ross Sea Shelf area were sampled at high resolution. The observations give insights into small-scale fluctuations of the three-dimensional velocity field in and...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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ftoceanrep:oai:oceanrep.geomar.de:694 2024-09-15T18:32:31+00:00 High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume Visbeck, Martin Thurnherr, A. M. 2009 text https://oceanrep.geomar.de/id/eprint/694/ https://oceanrep.geomar.de/id/eprint/694/1/1-s2.0-S0967064508003627-main.pdf https://doi.org/10.1016/j.dsr2.2008.10.029 en eng Elsevier https://oceanrep.geomar.de/id/eprint/694/1/1-s2.0-S0967064508003627-main.pdf Visbeck, M. and Thurnherr, A. M. (2009) High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume. Deep Sea Research Part II: Topical Studies in Oceanography, 56 (13-14). pp. 835-842. DOI 10.1016/j.dsr2.2008.10.029 <https://doi.org/10.1016/j.dsr2.2008.10.029>. doi:10.1016/j.dsr2.2008.10.029 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.1016/j.dsr2.2008.10.029 2024-09-04T05:04:40Z During the second cruise of the AnSlope project, the hydrography and velocity fields within a descending gravity plume in the northwestern Ross Sea Shelf area were sampled at high resolution. The observations give insights into small-scale fluctuations of the three-dimensional velocity field in and around the core of a strong gravity current, associated with peak velocities close to 2 m/s. There are two distinct layers of high acoustic backscatter (at 300 kHz) near the seabed associated with increased velocity variance and Richardson numbers near 0.25, suggesting that the high backscatter is caused by increased levels of turbulence resulting in increased acoustic Bragg scattering. (C) 2008 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Ross Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Deep Sea Research Part II: Topical Studies in Oceanography 56 13-14 835 842 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
During the second cruise of the AnSlope project, the hydrography and velocity fields within a descending gravity plume in the northwestern Ross Sea Shelf area were sampled at high resolution. The observations give insights into small-scale fluctuations of the three-dimensional velocity field in and around the core of a strong gravity current, associated with peak velocities close to 2 m/s. There are two distinct layers of high acoustic backscatter (at 300 kHz) near the seabed associated with increased velocity variance and Richardson numbers near 0.25, suggesting that the high backscatter is caused by increased levels of turbulence resulting in increased acoustic Bragg scattering. (C) 2008 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Visbeck, Martin Thurnherr, A. M. |
spellingShingle |
Visbeck, Martin Thurnherr, A. M. High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume |
author_facet |
Visbeck, Martin Thurnherr, A. M. |
author_sort |
Visbeck, Martin |
title |
High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume |
title_short |
High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume |
title_full |
High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume |
title_fullStr |
High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume |
title_full_unstemmed |
High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume |
title_sort |
high-resolution velocity and hydrographic observations of the drygalski trough gravity plume |
publisher |
Elsevier |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/694/ https://oceanrep.geomar.de/id/eprint/694/1/1-s2.0-S0967064508003627-main.pdf https://doi.org/10.1016/j.dsr2.2008.10.029 |
genre |
Ross Sea |
genre_facet |
Ross Sea |
op_relation |
https://oceanrep.geomar.de/id/eprint/694/1/1-s2.0-S0967064508003627-main.pdf Visbeck, M. and Thurnherr, A. M. (2009) High-resolution velocity and hydrographic observations of the Drygalski Trough gravity plume. Deep Sea Research Part II: Topical Studies in Oceanography, 56 (13-14). pp. 835-842. DOI 10.1016/j.dsr2.2008.10.029 <https://doi.org/10.1016/j.dsr2.2008.10.029>. doi:10.1016/j.dsr2.2008.10.029 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.dsr2.2008.10.029 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
56 |
container_issue |
13-14 |
container_start_page |
835 |
op_container_end_page |
842 |
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1810474254781644800 |