Warming of Greenland Sea deep water induced by abyssal mixing
Greenland Sea, Deep Water, Mixing, Turbulence, ADCP, LADCP, Warming, Finescale, Shear, Strain, Density, Overturns, Ventilation. - In the absence of deep convection, the Greenland Sea Deep Water has experienced a slow but significant warming during the 1980s and 9́0s. Enhanced vertical mixing can exp...
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Staats- und Universitätsbibliothek [Host]
2004
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ftgbv:oai:gbv.de:opac-de-7:ppn:386913609 2023-05-15T16:25:42+02:00 Warming of Greenland Sea deep water induced by abyssal mixing Walter, Maren 2004 electronic Elektronische Ressource electronic resource remote Online-Ressource 134 p. = 7615 KB, text and images http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000008518 http://webdoc.sub.gwdg.de/ebook/diss/Bremen/2004/E-Diss851_mwalter_thesis.pdf eng eng Staats- und Universitätsbibliothek [Host] 2004 ftgbv 2016-11-06T23:14:28Z Greenland Sea, Deep Water, Mixing, Turbulence, ADCP, LADCP, Warming, Finescale, Shear, Strain, Density, Overturns, Ventilation. - In the absence of deep convection, the Greenland Sea Deep Water has experienced a slow but significant warming during the 1980s and 9́0s. Enhanced vertical mixing can explain the observed trends of several propertiesincluding anthropogenic tracers, but the necessary mixing ratesare at the higher end of those observed elsewhere in the ocean.In this work, the mixing is studied by means of the spatial distribution and strength of eddy diffusivities. These are calculated from energy dissipationrates, which in turn are estimated with two complementary methods.Thorpe scales provide a direct estimate of the dissipation from densityoverturns. The second method uses a spectral estimate of the finescale variances of velocity shear density strain as proxies for the energy content of the internal wave field, and the equlibrium energy dissipation rate. Both methods are applied on a data set obtained duringsummer 1998, comprising loweredADCP measurements of the velocity field in the central Greenland Sea and near the surrounding ridge systems, as well . @Bremen, Univ., Diss., 2004 Other/Unknown Material Greenland Greenland Sea Georg-August-Universität Göttingen: GOEDOC Greenland |
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collection |
Georg-August-Universität Göttingen: GOEDOC |
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ftgbv |
language |
English |
description |
Greenland Sea, Deep Water, Mixing, Turbulence, ADCP, LADCP, Warming, Finescale, Shear, Strain, Density, Overturns, Ventilation. - In the absence of deep convection, the Greenland Sea Deep Water has experienced a slow but significant warming during the 1980s and 9́0s. Enhanced vertical mixing can explain the observed trends of several propertiesincluding anthropogenic tracers, but the necessary mixing ratesare at the higher end of those observed elsewhere in the ocean.In this work, the mixing is studied by means of the spatial distribution and strength of eddy diffusivities. These are calculated from energy dissipationrates, which in turn are estimated with two complementary methods.Thorpe scales provide a direct estimate of the dissipation from densityoverturns. The second method uses a spectral estimate of the finescale variances of velocity shear density strain as proxies for the energy content of the internal wave field, and the equlibrium energy dissipation rate. Both methods are applied on a data set obtained duringsummer 1998, comprising loweredADCP measurements of the velocity field in the central Greenland Sea and near the surrounding ridge systems, as well . @Bremen, Univ., Diss., 2004 |
author2 |
Walter, Maren |
title |
Warming of Greenland Sea deep water induced by abyssal mixing |
spellingShingle |
Warming of Greenland Sea deep water induced by abyssal mixing |
title_short |
Warming of Greenland Sea deep water induced by abyssal mixing |
title_full |
Warming of Greenland Sea deep water induced by abyssal mixing |
title_fullStr |
Warming of Greenland Sea deep water induced by abyssal mixing |
title_full_unstemmed |
Warming of Greenland Sea deep water induced by abyssal mixing |
title_sort |
warming of greenland sea deep water induced by abyssal mixing |
publisher |
Staats- und Universitätsbibliothek [Host] |
publishDate |
2004 |
url |
http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000008518 http://webdoc.sub.gwdg.de/ebook/diss/Bremen/2004/E-Diss851_mwalter_thesis.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland Sea |
genre_facet |
Greenland Greenland Sea |
_version_ |
1766014525881974784 |