Ice furrow mapping in the Laptev Sea
During the "Polarstern"-expeditions ARK-IX/4 (1993) and ARK-XI/1 (1995), organised by the Alfred Wegener Institute (AWI), acoustic subbottom profiles (Parasound) have been collected in the Laptev Sea Shelf, Siberia. These data have been interpreted as an indicator of ice scours frequency a...
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1998
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.734154 2023-05-15T16:37:44+02:00 Ice furrow mapping in the Laptev Sea Kelz, Ingo Niessen, Frank MEDIAN LATITUDE: 68.020315 * MEDIAN LONGITUDE: 122.117492 * SOUTH-BOUND LATITUDE: 44.512000 * WEST-BOUND LONGITUDE: 97.266000 * NORTH-BOUND LATITUDE: 81.500000 * EAST-BOUND LONGITUDE: 149.638000 * DATE/TIME START: 1993-08-29T00:00:00 * DATE/TIME END: 1995-09-08T16:42:00 1998-02-25 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.734154 https://doi.org/10.1594/PANGAEA.734154 en eng PANGAEA Kelz, Ingo (1998): Sedimentechotypen und Oberflächenstrukturen in der äußeren Laptevsee. Diploma Thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, Geographische Institute, 91 pp, hdl:10013/epic.34182.d001 https://doi.pangaea.de/10.1594/PANGAEA.734154 https://doi.org/10.1594/PANGAEA.734154 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven ARK-IX/4 AWI_Paleo LaptevSea Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI ParaSound Polarstern PS PS27 Dataset 1998 ftpangaea https://doi.org/10.1594/PANGAEA.734154 2023-01-20T07:31:39Z During the "Polarstern"-expeditions ARK-IX/4 (1993) and ARK-XI/1 (1995), organised by the Alfred Wegener Institute (AWI), acoustic subbottom profiles (Parasound) have been collected in the Laptev Sea Shelf, Siberia. These data have been interpreted as an indicator of ice scours frequency and off-shore permafrost patterns. An additional acoustic profile data-base was available by the results of the expedition of the Federal Institute for Geosciences and Natural Resources (BGR) of the year 1994. The area of the expedition was located closer to the shelf, therefore supports a better understanding of ice scours frequency in shallower marine environments. The data-file consists of a 2930 km Parasound-traverse and has been subdivided into 586 working profiles. They are characterised by their location, number of ice scours, interpreted patterns of reflection and their extension and morphology. The data have been evaluated statistically and graphically and were presented in a map. Different patterns of sea floor reflection were established by different environments, outer influences (e.g. size of the icebergs, direction of the drift of icebergs) and the climatic history of the region. In the north-westerly region of the Laptev Sea at the continental slope of Severnaya Zemlya the sea floor in shallower depths has been ploughed intensely by recent icebergs. In some regions (40-60m), as an effect of intensely ploughing, the sea floor is hardly defined in acoustic profiles come along with relocation of marine deposits. Glacial diamiet deposits prevented the development of deep scours. Up to 355m deeper scours result from lower sea levels. The marginal north-easterly region of the Laptev Sea is characterised exclusively by this type of scour. Morphology and depth of these scours can be compared with those of the westerly Vilkitsky-Street so that similar conditions of development may be expected. Both, the north-easterly Laptev Sea and the Vilkitsky-Street, are not dominated by patterns ofrecent icebergs. In contrary the ... Dataset Ice laptev Laptev Sea permafrost Severnaya Zemlya Siberia PANGAEA - Data Publisher for Earth & Environmental Science Laptev Sea Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(97.266000,149.638000,81.500000,44.512000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-IX/4 AWI_Paleo LaptevSea Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI ParaSound Polarstern PS PS27 |
spellingShingle |
ARK-IX/4 AWI_Paleo LaptevSea Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI ParaSound Polarstern PS PS27 Kelz, Ingo Niessen, Frank Ice furrow mapping in the Laptev Sea |
topic_facet |
ARK-IX/4 AWI_Paleo LaptevSea Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI ParaSound Polarstern PS PS27 |
description |
During the "Polarstern"-expeditions ARK-IX/4 (1993) and ARK-XI/1 (1995), organised by the Alfred Wegener Institute (AWI), acoustic subbottom profiles (Parasound) have been collected in the Laptev Sea Shelf, Siberia. These data have been interpreted as an indicator of ice scours frequency and off-shore permafrost patterns. An additional acoustic profile data-base was available by the results of the expedition of the Federal Institute for Geosciences and Natural Resources (BGR) of the year 1994. The area of the expedition was located closer to the shelf, therefore supports a better understanding of ice scours frequency in shallower marine environments. The data-file consists of a 2930 km Parasound-traverse and has been subdivided into 586 working profiles. They are characterised by their location, number of ice scours, interpreted patterns of reflection and their extension and morphology. The data have been evaluated statistically and graphically and were presented in a map. Different patterns of sea floor reflection were established by different environments, outer influences (e.g. size of the icebergs, direction of the drift of icebergs) and the climatic history of the region. In the north-westerly region of the Laptev Sea at the continental slope of Severnaya Zemlya the sea floor in shallower depths has been ploughed intensely by recent icebergs. In some regions (40-60m), as an effect of intensely ploughing, the sea floor is hardly defined in acoustic profiles come along with relocation of marine deposits. Glacial diamiet deposits prevented the development of deep scours. Up to 355m deeper scours result from lower sea levels. The marginal north-easterly region of the Laptev Sea is characterised exclusively by this type of scour. Morphology and depth of these scours can be compared with those of the westerly Vilkitsky-Street so that similar conditions of development may be expected. Both, the north-easterly Laptev Sea and the Vilkitsky-Street, are not dominated by patterns ofrecent icebergs. In contrary the ... |
format |
Dataset |
author |
Kelz, Ingo Niessen, Frank |
author_facet |
Kelz, Ingo Niessen, Frank |
author_sort |
Kelz, Ingo |
title |
Ice furrow mapping in the Laptev Sea |
title_short |
Ice furrow mapping in the Laptev Sea |
title_full |
Ice furrow mapping in the Laptev Sea |
title_fullStr |
Ice furrow mapping in the Laptev Sea |
title_full_unstemmed |
Ice furrow mapping in the Laptev Sea |
title_sort |
ice furrow mapping in the laptev sea |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.734154 https://doi.org/10.1594/PANGAEA.734154 |
op_coverage |
MEDIAN LATITUDE: 68.020315 * MEDIAN LONGITUDE: 122.117492 * SOUTH-BOUND LATITUDE: 44.512000 * WEST-BOUND LONGITUDE: 97.266000 * NORTH-BOUND LATITUDE: 81.500000 * EAST-BOUND LONGITUDE: 149.638000 * DATE/TIME START: 1993-08-29T00:00:00 * DATE/TIME END: 1995-09-08T16:42:00 |
long_lat |
ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(97.266000,149.638000,81.500000,44.512000) |
geographic |
Laptev Sea Severnaya Zemlya |
geographic_facet |
Laptev Sea Severnaya Zemlya |
genre |
Ice laptev Laptev Sea permafrost Severnaya Zemlya Siberia |
genre_facet |
Ice laptev Laptev Sea permafrost Severnaya Zemlya Siberia |
op_source |
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven |
op_relation |
Kelz, Ingo (1998): Sedimentechotypen und Oberflächenstrukturen in der äußeren Laptevsee. Diploma Thesis, Rheinische Friedrich-Wilhelms-Universität Bonn, Geographische Institute, 91 pp, hdl:10013/epic.34182.d001 https://doi.pangaea.de/10.1594/PANGAEA.734154 https://doi.org/10.1594/PANGAEA.734154 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.734154 |
_version_ |
1766028033762787328 |