Adélie Land Bottom Water ...
The general circulation and time evolution of wintertime water masses in the Adélie Depression is described from hydrographic observations taken during the Mertz Polynya Experiment in July-September 1999. Sea-ice growth was estimated and found to vary from 4.8±1.7,4.1± 1.5,8.4±1.7 cm day−1 respectiv...
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| Format: | Thesis |
| Language: | unknown |
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University Of Tasmania
2023
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| Online Access: | https://dx.doi.org/10.25959/23225648.v1 https://figshare.utas.edu.au/articles/thesis/Ad_lie_Land_Bottom_Water/23225648/1 |
| Summary: | The general circulation and time evolution of wintertime water masses in the Adélie Depression is described from hydrographic observations taken during the Mertz Polynya Experiment in July-September 1999. Sea-ice growth was estimated and found to vary from 4.8±1.7,4.1± 1.5,8.4±1.7 cm day−1 respectively over a three week period. The average growth rate of sea-ice in the Mertz Glacier polynya is 5.8 cm day−1. Near the Mertz Glacier polynya the ocean heat flux is between 15±6 and 43±11 W m−2, with an average of 30 W m−2 and the latent heat budget is between 125±45 to 254±52 W m−2, with an average of 174 W m−2. These estimates agree with ship-based measurements of sea-ice observed during the experiment. It is concluded that during winter the Mertz polynya is primarily a latent heat polynya. The seasonal evolution of dense shelf waters in the Adélie Depression is described from time series of salinity and temperature from moored hydrographic instruments. Velocity measurements in the Adélie Sill define the total ... |
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