Tsunami; Wave modeling; Tsunami deposit; Hazard assessment; Earthquakes; Slope stability; Delta sedimentation; Site response
Shynkarenko Anastasiia, Kremer Katrina, Stegmann Sylvia, Bergamo Paolo, Lontsi Agostiny Marrios, Roesner Alexander, Hammerschmidt Steffen, Kopf Achim, Fäh Donat (2022), Geotechnical characterization and stability analysis of subaqueous slopes in Lake Lucerne (Switzerland), in Natural Hazards
Lontsi Agostiny Marrios, Shynkarenko Anastasiia, Kremer Katrina, Hobiger Manuel, Bergamo Paolo, Fabbri Stefano C., Anselmetti Flavio S., Fäh Donat (2022), A Robust Workflow for Acquiring and Preprocessing Ambient Vibration Data from Small Aperture Ocean Bottom Seismometer Arrays to Extract Scholte and Love Waves Phase-Velocity Dispersion Curves, in Pure and Applied Geophysics
, 179(1), 105-123.
Shynkarenko A, Lontsi A M, Kremer K, Bergamo P, Hobiger M, Hallo M, Fäh D (2021), Investigating the subsurface in a shallow water environment using array and single-station ambient vibration techniques, in Geophysical Journal International
, 227(3), 1857-1878.
Nigg Valentin, Bacigaluppi Paola, Vetsch David F., Vogel Hendrik, Kremer Katrina, Anselmetti Flavio S. (2021), Shallow‐Water Tsunami Deposits: Evidence From Sediment Cores and Numerical Wave Propagation of the 1601 CE Lake Lucerne Event, in Geochemistry, Geophysics, Geosystems
, 22(12), e2021GC009.
Fabbri Stefano C., Haas Isabel, Kremer Katrina, Motta Danae, Girardclos Stéphanie, Anselmetti Flavio S. (2021), Subaqueous geomorphology and delta dynamics of Lake Brienz (Switzerland): implications for the sediment budget in the alpine realm, in Swiss Journal of Geosciences
, 114(1), 22-22.
Nigg Valentin, Wohlwend Stephan, Hilbe Michael, Bellwald Benjamin, Fabbri Stefano C., de Souza Gregory F., Donau Florian, Grischott Reto, Strasser Michael, Anselmetti Flavio S. (2021), A tsunamigenic delta collapse and its associated tsunami deposits in and around Lake Sils, Switzerland, in Natural Hazards
Kremer Katrina, Anselmetti Flavio S., Evers Frederic M., Goff James, Nigg Valentin (2021), Freshwater (paleo)tsunamis – a review, in Earth-Science Reviews
, 212, 103447-103447.
Strupler Michael, Evers Frederic M., Kremer Katrina, Cauzzi Carlo, Bacigaluppi Paola, Vetsch David F., Boes Robert M., Fäh Donat, Anselmetti Flavio S., Wiemer Stefan (2020), A Simplified Classification of the Relative Tsunami Potential in Swiss Perialpine Lakes Caused by Subaqueous and Subaerial Mass-Movements, in Frontiers in Earth Science
, 8, 1-14.
Strupler Michael, Anselmetti Flavio S., Hilbe Michael, Kremer Katrina, Wiemer Stefan (2020), A workflow for the rapid assessment of the landslide-tsunami hazard in peri-alpine lakes, in Geological Society, London, Special Publications
, 500(1), 81-95.
StruplerMchael, BacigaluppiPaola, KremerKatrina, Vetsch David, AnselmettiFlavio, BoesRobert, Wiemer Stefan (2020), Abschätzung der Gefährdung durch Tsunamis in perialpinen Seen infolge Unterwasserhangrutschungen, in Wasser Energie Luft
, 112, 11-16.
Evers Frederic M., Fuchs Helge, Vetsch David, Boes Robert M. (2018), SUBMARINE MASS FAILURE: WAVE GENERATION BY GRANULAR SLIDES, in Coastal Engineering Proceedings
, 1(36), 47-47.
LontsiA., Garcia-JerezA., VillegasJ.C.M., Sánchez-SesmaF.J., MolkenthinC., OhrnbergerM., KrügerF., WangR., FaehD., A generalized theory for full microtremor horizontal-to-vertical [H/V (z, f)] spectral ratio interpretation in offshore and onshore environments, in Geophysical Journal International
This Sinergia proposal aims at unraveling the trigger mechanisms, preconditions, processes and impacts of lake tsunamis, a so far underexplored natural hazard. General tsunami research has traditionally focused on the large ocean megatsunamis, however, historic chronicles document clearly that waves of similar heights also occur on lakes potentially causing widespread coastal damage and even casualties. With a detailed historic database and its extensive previous limnogeologic and paleoseismic research, Central Switzerland offers an outstanding field laboratory to assess the relevant lake-tsunami processes. Results are anticipated to be applicable to other lake districts, and as added bonus, the gained knowledge of underlying processes will contribute to a better general understanding of mass-movement induced tsunami waves in the marine realm.The goals of this project are to understand governing mechanisms of genesis and propagation of tsunamis in lakes by using these continental basins as analogues for their larger marine counterparts. Through a multidisciplinary approach involving limnogeologists, seismologists, geotechnical specialists, hydraulic engineers and hazard specialists from three Swiss and one German research groups, we will develop the key concepts and factors relevant for causes and controls of these tsunamis. Extensive field surveys and field tests using state-of-the-art and newly developed instruments (e.g. ocean bottom seismometers; cone penetration test devices) will investigate how geotechnical, sedimentological and pore-pressure related variability react to dynamic seismic loading and eventually define development of weak layers so that stratigraphic slope-sediment successions fail. The available and to-be-developed instruments stem from a cooperation with a research group from one of the leading German marine technologic research centers (Marum, Bremen). Previous studies in lakes documented a highly variable distribution of susceptibility of lake slopes towards failure. This project will quantify the threshold conditions on lateral lake slopes, which usually fail coseismically. In addition, we also include and discern delta slopes, which are known to have failed spontaneously, likely induced by rapid loading of river-derived particles or redistributing sediment flows. Transient bathymetry of modern delta sedimentation will be surveyed in quasi-4D in order to quantify how delta slopes recharge eventually causing overloading.All knowledge gained on slope instabilities will be used as input parameters into numerical models of tsunami-wave propagation and inundation. Existing numeric codes will be modified and improved to better simulate wave propagation in these confined deep basins. Moreover, hydraulic models in the laboratory will yield novel insights into wave development and controls. Combining numeric and hydraulic models by iterative comparison of the results will form a highly innovative approach. Data obtained in the various work packages will be compared and validated by the analysis of coastal tsunami layers that were deposited in near-shore depressions. New lake-sediment-tailored methodologies will be developed to identify these tsunami deposits, eventually leading to a tsunami-event stratigraphy of the postglacial epoch (~15'000 yrs). All results will eventually be fed into the development of the first holistic framework for probabilistic tsunami hazard assessment. The results from process understanding, different modeling methods and data developed in the project will provide the baseline for assessing the risks for people, lifelines and structures along lakeshores and coasts. This process will define the needs and benefits of potential mitigation strategies.