The effect of salinity on density in the Leeuwin Current System
Climatological temperature and salinity fields are used to calculate the salinity contribution to density and dynamic height fields in the Leeuwin Current System (LCS). While the temperature gradient is primarily linear, with warmest water to the north, the salinity fields are spatially inhomogenous...
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Monterey, California. Naval Postgraduate School
1996
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ftnavalpschool:oai:calhoun.nps.edu:10945/26513 2024-06-09T07:39:06+00:00 The effect of salinity on density in the Leeuwin Current System Huang, Ming-Jer Batteen, Mary L. Naval Postgraduate School Physical Oceanography Bourke, Robert H. 1996-06 60 p.: ill. application/pdf https://hdl.handle.net/10945/26513 en_US eng Monterey, California. Naval Postgraduate School NPS-OC-96-001 https://hdl.handle.net/10945/26513 Primitive equation model Leeuwin Current System salinity density dynamic height eddies currents Ocean currents Indian Ocean Thesis 1996 ftnavalpschool 2024-05-15T00:41:33Z Climatological temperature and salinity fields are used to calculate the salinity contribution to density and dynamic height fields in the Leeuwin Current System (LCS). While the temperature gradient is primarily linear, with warmest water to the north, the salinity fields are spatially inhomogenous. A comparison of density fields, calculated with constant and variable salinity, shows that, off Western Australia, the density field is primarily determined by temperature. Off Southern Australia, the density field is dependent on warm and salty (subtropical) and fresh and cold (sub-Antarctic) water masses. While the dynamic height fields, calculated with constant and variable salinity, show similar flow patterns off Western Australia, different flow patterns are found off Southern Australia. In addition to the analysis of climatological fields, a primitive equation ocean model is used to investigate the role of salinity in the formation of currents and eddies in the LCS. Two identical ocean models, one with a climatological salinity field and the other with no horizontal salinity gradients, are run and compared with each other. Despite the model runs being initialized with similar temperature distributions, there are relatively large temperature and density differences in the Southern Australian region, due to the advection of water masses by the Leeuwin Current. Based on the climatological analyses and the results of the model experiments, it is concluded that, descriptively and dynamically, both temperature and salinity are essential to accurately characterize the large-scale circulation of the LCS Approved for public release; distribution is unlimited. Republic of China Navy author. Lieutenant Commander, Republic of China Navy This thesis was prepared in conjunction with research sponsored in part by the National Science Foundation, 4201 Wilson Boulevard, Arlington, VA 22230. http://archive.org/details/theeffectofsalin1094526513 Thesis Antarc* Antarctic Naval Postgraduate School: Calhoun Antarctic Arlington ENVELOPE(-139.171,-139.171,64.024,64.024) Indian |
institution |
Open Polar |
collection |
Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
English |
topic |
Primitive equation model Leeuwin Current System salinity density dynamic height eddies currents Ocean currents Indian Ocean |
spellingShingle |
Primitive equation model Leeuwin Current System salinity density dynamic height eddies currents Ocean currents Indian Ocean Huang, Ming-Jer The effect of salinity on density in the Leeuwin Current System |
topic_facet |
Primitive equation model Leeuwin Current System salinity density dynamic height eddies currents Ocean currents Indian Ocean |
description |
Climatological temperature and salinity fields are used to calculate the salinity contribution to density and dynamic height fields in the Leeuwin Current System (LCS). While the temperature gradient is primarily linear, with warmest water to the north, the salinity fields are spatially inhomogenous. A comparison of density fields, calculated with constant and variable salinity, shows that, off Western Australia, the density field is primarily determined by temperature. Off Southern Australia, the density field is dependent on warm and salty (subtropical) and fresh and cold (sub-Antarctic) water masses. While the dynamic height fields, calculated with constant and variable salinity, show similar flow patterns off Western Australia, different flow patterns are found off Southern Australia. In addition to the analysis of climatological fields, a primitive equation ocean model is used to investigate the role of salinity in the formation of currents and eddies in the LCS. Two identical ocean models, one with a climatological salinity field and the other with no horizontal salinity gradients, are run and compared with each other. Despite the model runs being initialized with similar temperature distributions, there are relatively large temperature and density differences in the Southern Australian region, due to the advection of water masses by the Leeuwin Current. Based on the climatological analyses and the results of the model experiments, it is concluded that, descriptively and dynamically, both temperature and salinity are essential to accurately characterize the large-scale circulation of the LCS Approved for public release; distribution is unlimited. Republic of China Navy author. Lieutenant Commander, Republic of China Navy This thesis was prepared in conjunction with research sponsored in part by the National Science Foundation, 4201 Wilson Boulevard, Arlington, VA 22230. http://archive.org/details/theeffectofsalin1094526513 |
author2 |
Batteen, Mary L. Naval Postgraduate School Physical Oceanography Bourke, Robert H. |
format |
Thesis |
author |
Huang, Ming-Jer |
author_facet |
Huang, Ming-Jer |
author_sort |
Huang, Ming-Jer |
title |
The effect of salinity on density in the Leeuwin Current System |
title_short |
The effect of salinity on density in the Leeuwin Current System |
title_full |
The effect of salinity on density in the Leeuwin Current System |
title_fullStr |
The effect of salinity on density in the Leeuwin Current System |
title_full_unstemmed |
The effect of salinity on density in the Leeuwin Current System |
title_sort |
effect of salinity on density in the leeuwin current system |
publisher |
Monterey, California. Naval Postgraduate School |
publishDate |
1996 |
url |
https://hdl.handle.net/10945/26513 |
long_lat |
ENVELOPE(-139.171,-139.171,64.024,64.024) |
geographic |
Antarctic Arlington Indian |
geographic_facet |
Antarctic Arlington Indian |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
NPS-OC-96-001 https://hdl.handle.net/10945/26513 |
_version_ |
1801377295293743104 |