Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system
The Young Sound/Tyrolerfjord system is a 90 km long and 2–7 km wide sill fjord in northeast Greenland, with a mean depth of 100 m. Observations of the bottom topography are presented from different sections of the fjord system, which has a total volume of 40 km3 and a surface area of 390 km2. Hydrog...
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Danish Polar Center/Museum Tusculanum Press
2007
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ftsbaarhusojs:oai:ojs.tidsskrift.dk:article/142639 2024-01-28T10:06:12+01:00 Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system Bendtsen, Jørgen Gustafsson, Karin E. Rysggard, Søren Vang, Torben 2007-01-01 application/pdf https://tidsskrift.dk/meddrgroenland_biosci/article/view/142639 eng eng Danish Polar Center/Museum Tusculanum Press https://tidsskrift.dk/meddrgroenland_biosci/article/view/142639/186320 https://tidsskrift.dk/meddrgroenland_biosci/article/view/142639 Meddelelser om Grønland. Bioscience; Vol. 58 (2007): Meddelelser om Grønland. Bioscience; 46-59 Meddelelser om Grønland. Bioscience; Årg. 58 (2007): Meddelelser om Grønland. Bioscience; 46-59 0106-1054 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2007 ftsbaarhusojs 2024-01-03T23:59:24Z The Young Sound/Tyrolerfjord system is a 90 km long and 2–7 km wide sill fjord in northeast Greenland, with a mean depth of 100 m. Observations of the bottom topography are presented from different sections of the fjord system, which has a total volume of 40 km3 and a surface area of 390 km2. Hydrographic observations from the summer period show the large influence from the freshwater discharge on the mixed layer depth in the fjord, which, during summer, is less than 5 m, with surface salinity increasing from values below 10 in the inner part of Young Sound to about 30 above the sill in the outer part of the fjord. The deep and intermediate water in the fjord is characterized by a temperature of -1.7 °C and a salinity of 33.1, corresponding to σt < 26.5. The maximum tidal amplitude is 0.8 m and 0.4 m during flood and neap tide, respectively, and is dominated by the lunar semi-diurnalM2 tidal constituent. New model simulations show the evolution of the mixed layer during the summer season. A sensitivity study based on this model is presented, showing that the mixed layer thickness will decrease by about 20% if the runoff is increased by a factor of two, and the implications for the hydrographic conditions in relation to a global warming scenario are discussed. Article in Journal/Newspaper Greenland Aarhus University: OJS at The State and University Library Greenland Tyrolerfjord ENVELOPE(-21.883,-21.883,74.517,74.517) |
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Open Polar |
collection |
Aarhus University: OJS at The State and University Library |
op_collection_id |
ftsbaarhusojs |
language |
English |
description |
The Young Sound/Tyrolerfjord system is a 90 km long and 2–7 km wide sill fjord in northeast Greenland, with a mean depth of 100 m. Observations of the bottom topography are presented from different sections of the fjord system, which has a total volume of 40 km3 and a surface area of 390 km2. Hydrographic observations from the summer period show the large influence from the freshwater discharge on the mixed layer depth in the fjord, which, during summer, is less than 5 m, with surface salinity increasing from values below 10 in the inner part of Young Sound to about 30 above the sill in the outer part of the fjord. The deep and intermediate water in the fjord is characterized by a temperature of -1.7 °C and a salinity of 33.1, corresponding to σt < 26.5. The maximum tidal amplitude is 0.8 m and 0.4 m during flood and neap tide, respectively, and is dominated by the lunar semi-diurnalM2 tidal constituent. New model simulations show the evolution of the mixed layer during the summer season. A sensitivity study based on this model is presented, showing that the mixed layer thickness will decrease by about 20% if the runoff is increased by a factor of two, and the implications for the hydrographic conditions in relation to a global warming scenario are discussed. |
format |
Article in Journal/Newspaper |
author |
Bendtsen, Jørgen Gustafsson, Karin E. Rysggard, Søren Vang, Torben |
spellingShingle |
Bendtsen, Jørgen Gustafsson, Karin E. Rysggard, Søren Vang, Torben Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system |
author_facet |
Bendtsen, Jørgen Gustafsson, Karin E. Rysggard, Søren Vang, Torben |
author_sort |
Bendtsen, Jørgen |
title |
Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system |
title_short |
Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system |
title_full |
Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system |
title_fullStr |
Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system |
title_full_unstemmed |
Physical conditions, dynamics and model simulations during the ice-free period of the Young Sound/Tyrolerfjord system |
title_sort |
physical conditions, dynamics and model simulations during the ice-free period of the young sound/tyrolerfjord system |
publisher |
Danish Polar Center/Museum Tusculanum Press |
publishDate |
2007 |
url |
https://tidsskrift.dk/meddrgroenland_biosci/article/view/142639 |
long_lat |
ENVELOPE(-21.883,-21.883,74.517,74.517) |
geographic |
Greenland Tyrolerfjord |
geographic_facet |
Greenland Tyrolerfjord |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Meddelelser om Grønland. Bioscience; Vol. 58 (2007): Meddelelser om Grønland. Bioscience; 46-59 Meddelelser om Grønland. Bioscience; Årg. 58 (2007): Meddelelser om Grønland. Bioscience; 46-59 0106-1054 |
op_relation |
https://tidsskrift.dk/meddrgroenland_biosci/article/view/142639/186320 https://tidsskrift.dk/meddrgroenland_biosci/article/view/142639 |
_version_ |
1789332932774592512 |