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This report summarises the work carried out during cruise 0103 to fjords in Sogn og Fjordane and Møre og Romsdal in June and July 2001 in the project "Regional lanmdslide occurrences and possible postglacial earthquake activity in northwest Western Norway" (Phase B1). This project is a collaboration between NGU, Norsk Hydro ASA. The University of Bergen and the Sogn and Fjordane College, aiming to identify regional slide events and interpret triggering factors for such slides.
NGU, Norsk Hydro ASA, the University of Bergen and Sogn and Fjordane College collaborate on a project aiming to identify regional slide/mass-movement events and to interpret triggering factors for such slides (Regional landslide occur- rences and possible post-glacial earthquake activity in northwest Western Norway) Evidence for such slides have been searched for in five lakes in Nordfjord and Sunnmøre by penetration echosounding profiling and bathymetric mapping.
Five lakes in Ørsta, Volda and Nordfjordeid communes are mapped using a Knudsen 320 M/P 12 Khz echo-sounder. From the echo-sounding profiles there are made bathymetric maps for the lakes. The acoustic profiles are interpreted at NGU with regards to disturbances of the lake-sediments - like slides or tectonic shaking. Slides are registered in all lakes.
A project was begun in cooperation with NGU, Norsk Hydro, the University of Bergen and the Sogn & Fjordane College with the aim to study regional slide events and interpret triggering factors for such slides. The project involves intrpretation of pre-existing and new seismic reflection profiles and multi- beam-echosounder data and a large scale sampling program to analyse Quaternary fjord sediments.
Fives lakes in Ørsta, Volda and Nordfjordeid communes are mapped using a Knudsen 320 M/P 12 Khz echo-sounder. From the echo-sounding profiles there are made maps for the lakes. The acoustic profiles are interpreted at NGU with regard to disturbances of the lake-sediments - like slides or tectonic shaking. Slides are registered in all lakes.