ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION
In order to investigate meltwater events in the North Atlantic, a simple iceberg generation, drift, and melting routine was implemented in a high-resolution OGCM. Starting from the modelled last glacial state, every 25th day cylindrical model icebergs 300 meters high were released at 32 specific poi...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.536.8772 2023-05-15T16:29:05+02:00 ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION Karl Stattegger The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.8772 http://www.geo.uni-bremen.de/geomod/Sonst/Staff/csn/publi/schaefer-neth_stattegger_1999.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.8772 http://www.geo.uni-bremen.de/geomod/Sonst/Staff/csn/publi/schaefer-neth_stattegger_1999.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.geo.uni-bremen.de/geomod/Sonst/Staff/csn/publi/schaefer-neth_stattegger_1999.pdf text ftciteseerx 2016-01-08T10:51:26Z In order to investigate meltwater events in the North Atlantic, a simple iceberg generation, drift, and melting routine was implemented in a high-resolution OGCM. Starting from the modelled last glacial state, every 25th day cylindrical model icebergs 300 meters high were released at 32 specific points along the coasts. Icebergs launched at the Barents Shelf margin spread a light meltwater lid over the Norwegian and Greenland Seas, shutting down the deep convection and the anti-clockwise circulation in this area. Due to the constraining ocean circulation, the icebergs produce a tongue of relatively cold and fresh water extending eastward from Hudson Strait that must develop at this location, regardless of iceberg origin. From the total amount of freshwater inferred by the icebergs, the thickness of the deposited IRD could be calculated in dependance of iceberg sediment concentration. In this way, typical extent and thickness of Heinrich layers could be reproduced, running the model for 250 years of steady state with constant iceberg meltwater inflow. 1 Text Greenland Hudson Strait North Atlantic Unknown Greenland Hudson Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
In order to investigate meltwater events in the North Atlantic, a simple iceberg generation, drift, and melting routine was implemented in a high-resolution OGCM. Starting from the modelled last glacial state, every 25th day cylindrical model icebergs 300 meters high were released at 32 specific points along the coasts. Icebergs launched at the Barents Shelf margin spread a light meltwater lid over the Norwegian and Greenland Seas, shutting down the deep convection and the anti-clockwise circulation in this area. Due to the constraining ocean circulation, the icebergs produce a tongue of relatively cold and fresh water extending eastward from Hudson Strait that must develop at this location, regardless of iceberg origin. From the total amount of freshwater inferred by the icebergs, the thickness of the deposited IRD could be calculated in dependance of iceberg sediment concentration. In this way, typical extent and thickness of Heinrich layers could be reproduced, running the model for 250 years of steady state with constant iceberg meltwater inflow. 1 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Karl Stattegger |
spellingShingle |
Karl Stattegger ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION |
author_facet |
Karl Stattegger |
author_sort |
Karl Stattegger |
title |
ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION |
title_short |
ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION |
title_full |
ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION |
title_fullStr |
ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION |
title_full_unstemmed |
ICEBERGS IN THE NORTH ATLANTIC: MODELLING CIRCULATION CHANGES AND GLACIO-MARINE DEPOSITION |
title_sort |
icebergs in the north atlantic: modelling circulation changes and glacio-marine deposition |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.8772 http://www.geo.uni-bremen.de/geomod/Sonst/Staff/csn/publi/schaefer-neth_stattegger_1999.pdf |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) |
geographic |
Greenland Hudson Hudson Strait |
geographic_facet |
Greenland Hudson Hudson Strait |
genre |
Greenland Hudson Strait North Atlantic |
genre_facet |
Greenland Hudson Strait North Atlantic |
op_source |
http://www.geo.uni-bremen.de/geomod/Sonst/Staff/csn/publi/schaefer-neth_stattegger_1999.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.536.8772 http://www.geo.uni-bremen.de/geomod/Sonst/Staff/csn/publi/schaefer-neth_stattegger_1999.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766018775604264960 |