Marine Geophysics and Hydroacoustics

Lake Constance (Germany)

Summary

Lake Constance is the largest lake in Germany with a lentgh of 60 km, a width of 10 km and a maximum water depth of 250 m. Present lake level is about 395 m above sea level. Lake topography has been extensively surveyed in the last couple of years within the frame of the Projekt  "Tiefenschärfe" of the German Research Institut for lake research in Langenargen. More

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In order to get a better unstanding of the internal structure of Lake Constance seismic surveys took place in May 2016 and November 2017. High resolution multichannel seismic data were acquired. Field work was conducted in cooperation with the suisse institute of Geology in Bern and the institute for lake reserach in Langenargen. A small reserach vessel was provided by the German institute with an ideal size for the survey purpose. First results image the subsurface of the lake to depth greater than 300 m. The acoustic basement of Lake Constance consist of a hard sediment layer with internal stratification and high amplitudes. The central basin is filled by thick disturbed sediments pointing to mass movement deposits covered by well stratified Holocence sediments on top. Along the steep basin walls are faults which form staircase-like structures pointing towards the lake center.

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Persons to contact: Katja Lindhorst  and  Sebastian Krastel

Partner Institutes:

 

scientific expeditions: May 2016 and November 2017