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Reconstructing the Younger Dryas ice dammed lake in the Baltic Basin: Bathymetry, area and volume

Jakobsson, Martin; Björck, Svante LU ; Alm, Goran; Andren, Thomas; Lindeberg, Greger and Svensson, Nils-Olof LU (2007) In Global and Planetary Change 57(3-4). p.355-370
Abstract
A digital 3D-reconstruction of the Baltic Ice Lake's (BIL) configuration during the termination of the Younger Dryas cold phase (ca. 11700 cal. yr BP) was compiled using a combined bathymetric-topographic Digital Terrain Model (DTM), Scandinavian ice sheet limits, Baltic Sea Holocene bottom sediment thickness information, and a paleoshoreline database maintained at the Lund University. The bathymetric-topographic DTM, assembled from publicly available data sets, has a resolution of 500 X 500 m on Lambert Azimuthal Equal Area projection allowing area and volume calculations of the BIL to be made with an unprecedented accuracy. When the damming Scandinavian ice sheet margin eventually retreated north of Mount Billingen, the high point in... (More)
A digital 3D-reconstruction of the Baltic Ice Lake's (BIL) configuration during the termination of the Younger Dryas cold phase (ca. 11700 cal. yr BP) was compiled using a combined bathymetric-topographic Digital Terrain Model (DTM), Scandinavian ice sheet limits, Baltic Sea Holocene bottom sediment thickness information, and a paleoshoreline database maintained at the Lund University. The bathymetric-topographic DTM, assembled from publicly available data sets, has a resolution of 500 X 500 m on Lambert Azimuthal Equal Area projection allowing area and volume calculations of the BIL to be made with an unprecedented accuracy. When the damming Scandinavian ice sheet margin eventually retreated north of Mount Billingen, the high point in terrain of Southern central Sweden bordering to lower terrain further to the north, the BIL was catastrophically drained resulting in a 25 m drop of the lake level. With our digital reconstruction, we estimate that approximately 7800 km(3) of water drained during this event and that the ice dammed lake area was reduced by ca. 18%. Building on previous results suggesting drainage over 1 to 2 years, our lake volume calculations imply that the freshwater flux to the contemporaneous sea in the west was between about 0.12 and 0.25 Sv. The BIL reconstruction provides new detailed information on the paleogeography in the area of southern Scandinavia, both before and after the drainage event, with implications for interpretations of geological records concerning the post-glacial environmental development. (c) 2007 Elsevier B.V All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Younger Dryas, paleobathymetry, ice dammed lakes, paleotopography, Baltic Sea, isostasy
in
Global and Planetary Change
volume
57
issue
3-4
pages
355 - 370
publisher
Elsevier
external identifiers
  • wos:000247411400012
  • scopus:34248589214
ISSN
1872-6364
DOI
10.1016/j.gloplacha.2007.01.006
language
English
LU publication?
yes
id
a5ebbd95-094c-4a82-b759-b9d7c1c9ad75 (old id 647758)
date added to LUP
2007-12-13 10:03:33
date last changed
2017-09-10 03:50:14
@article{a5ebbd95-094c-4a82-b759-b9d7c1c9ad75,
  abstract     = {A digital 3D-reconstruction of the Baltic Ice Lake's (BIL) configuration during the termination of the Younger Dryas cold phase (ca. 11700 cal. yr BP) was compiled using a combined bathymetric-topographic Digital Terrain Model (DTM), Scandinavian ice sheet limits, Baltic Sea Holocene bottom sediment thickness information, and a paleoshoreline database maintained at the Lund University. The bathymetric-topographic DTM, assembled from publicly available data sets, has a resolution of 500 X 500 m on Lambert Azimuthal Equal Area projection allowing area and volume calculations of the BIL to be made with an unprecedented accuracy. When the damming Scandinavian ice sheet margin eventually retreated north of Mount Billingen, the high point in terrain of Southern central Sweden bordering to lower terrain further to the north, the BIL was catastrophically drained resulting in a 25 m drop of the lake level. With our digital reconstruction, we estimate that approximately 7800 km(3) of water drained during this event and that the ice dammed lake area was reduced by ca. 18%. Building on previous results suggesting drainage over 1 to 2 years, our lake volume calculations imply that the freshwater flux to the contemporaneous sea in the west was between about 0.12 and 0.25 Sv. The BIL reconstruction provides new detailed information on the paleogeography in the area of southern Scandinavia, both before and after the drainage event, with implications for interpretations of geological records concerning the post-glacial environmental development. (c) 2007 Elsevier B.V All rights reserved.},
  author       = {Jakobsson, Martin and Björck, Svante and Alm, Goran and Andren, Thomas and Lindeberg, Greger and Svensson, Nils-Olof},
  issn         = {1872-6364},
  keyword      = {Younger Dryas,paleobathymetry,ice dammed lakes,paleotopography,Baltic Sea,isostasy},
  language     = {eng},
  number       = {3-4},
  pages        = {355--370},
  publisher    = {Elsevier},
  series       = {Global and Planetary Change},
  title        = {Reconstructing the Younger Dryas ice dammed lake in the Baltic Basin: Bathymetry, area and volume},
  url          = {http://dx.doi.org/10.1016/j.gloplacha.2007.01.006},
  volume       = {57},
  year         = {2007},
}