caa a22 4500 445839325 CHVBK 20180317145339.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s00015-011-0083-z doi (NATIONALLICENCE)springer-10.1007/s00015-011-0083-z Subaqueous morphology of Lake Lucerne (Central Switzerland): implications for mass movements and glacial history [Elektronische Daten] [Michael Hilbe, Flavio Anselmetti, Raymond Eilertsen, Louise Hansen, Walter Wildi] Bathymetric data available for Swiss lakes have typically only low to moderate resolution and variable quality, making them insufficient for detailed underwater geomorphological studies. This article presents results of a new bathymetric survey in perialpine Lake Lucerne using modern hydrographic equipment. A digital terrain model (DTM) of the lake floor (raster dataset with 1m cell size) covering the Chrüztrichter and Vitznau basins documents signatures of major Holocene mass movements and relics from the glacial history of the lake. Combining the bathymetry data with reflection seismic profiles and an existing event chronology allows investigating the morphology in its geological context. Subaqueous sediment slide scars with sharp headwalls cover large areas on moderately inclined slopes. The particularly large Weggis slide complex, correlated with an historical earthquake (ad 1601), features a ~9km long and 4-7m high headwall and covers an area of several square kilometers. Large debris cones of prehistoric rockfalls and the deposits of recent rockfall events imaged on the almost flat basin plain document mass-movement activity on steep slopes above the lake. Six transverse moraines, visible as subaqueous ridges, as lake-floor lineaments, or only imaged on reflection seismic profiles, indicate a complex glacial-inherited morphology. As many of the documented features result from potentially catastrophic events, high-resolution bathymetry can significantly improve natural hazard assessment for lakeshore communities by extending classical hazard maps to the subaqueous domain. Swiss Geological Society, 2011 Swath bathymetry nationallicence Perialpine lakes nationallicence Natural hazards nationallicence Subaqueous moraines nationallicence Soft-sediment deformation nationallicence Hilbe Michael Department of Surface Waters, Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland aut Anselmetti Flavio Department of Surface Waters, Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland aut Eilertsen Raymond Geological Survey of Norway (NGU), 9296, Tromsø, Norway aut Hansen Louise Geological Survey of Norway (NGU), 7491, Trondheim, Norway aut Wildi Walter Institut F.-A. Forel, Université de Genève, 1290, Versoix, Switzerland aut Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104/3(2011-12-01), 425-443 1661-8726 104:3<425 2011 104 15 https://doi.org/10.1007/s00015-011-0083-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00015-011-0083-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hilbe Michael Department of Surface Waters, Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Anselmetti Flavio Department of Surface Waters, Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland aut NATIONALLICENCE 700 1- Eilertsen Raymond Geological Survey of Norway (NGU), 9296, Tromsø, Norway aut NATIONALLICENCE 700 1- Hansen Louise Geological Survey of Norway (NGU), 7491, Trondheim, Norway aut NATIONALLICENCE 700 1- Wildi Walter Institut F.-A. Forel, Université de Genève, 1290, Versoix, Switzerland aut NATIONALLICENCE 773 0- Swiss Journal of Geosciences SP Birkhäuser Verlag Basel 104/3(2011-12-01), 425-443 1661-8726 104:3<425 2011 104 15 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 314561846 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer