Ice furrow mapping in the Laptev Sea ...

• Main Authors: Kelz, Ingo, Niessen, Frank
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1998
• Subjects: ParaSound; ARK-IX/4; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Laptev Sea; Ice; laptev; permafrost; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.734154; https://doi.pangaea.de/10.1594/PANGAEA.734154

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 ...