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Citations since 2017
11 Research Items
I am a geoscientist with a broad interest in investigating, quantifying and modelling subaqueous geomorphodynamic processes and assessing the related hazard. My current research focuses on estimating the hazard of tsunamis that are caused by earthquake-triggered sublacustrine and subaerial mass-movements.
November 2020 - present
- Lecturer and Senior Research Assistant
May 2012 - December 2012
Renard Centre of Marine Geology, University of Gent
- Scientific staff
Historical reports and recent studies have shown that tsunamis can also occur in lakes where they may cause large damages and casualties. Among the historical reports are many tsunamis in Swiss lakes that have been triggered both by subaerial and subaqueous mass movements (SAEMM and SAQMM). In this study, we present a simplified classification of l...
Although lake tsunamis constitute a rare peril, they have repeatedly occurred in peri-alpine lakes in the past. There are several documented historical examples of landslide-triggered tsunamis in Swiss lakes. However, fundamental information and workflows to rapidly quantify the lacustrine tsunami hazard for multiple lakes are missing so far. The f...
Historische Ereignisse haben gezeigt, dass Tsunamis nicht nur im marinen Bereich, sondern auch in Binnenseen auftreten können. Eine der Hauptursachen von See- Tsunamis sind subaquatische Massenbewegungen. In diesem Beitrag präsentieren wir einen Arbeitsablauf zur Abschätzung der Gefährdung durch Tsunamis durch Unterwasserhangrutschungen in perialpi...
Subaqueous landslides can induce potentially damaging tsunamis. Tsunamis are not restricted to the marine environment, but have also been documented on lakes in Switzerland and worldwide. For Lake Zurich (central Switzerland), previous work documented multiple, assumedly earthquake-triggered landslides. However, no information about past tsunamis i...
New high-resolution surveying techniques allow subaqueous geomorphology to be investigated in great detail. Such analyses are important as the morphologies are often indicative of past processes, including mass movements. For peri-alpine Lake Zurich, many mass-wasting events have occurred in the past millennia. While the ages of these events are kn...
The awareness of geohazards in the subaqueous environment has steadily increased in the past years and there is an increased need to assess these hazards in a quantitative sense. Prime examples are subaqueous landslides, which can be triggered by a number of processes including earthquakes or human activities, and which may impact offshore and onsh...
Subaqueous landslides and their consequences, such as tsunamis, can cause serious damage to offshore infrastructure and coastal communities. Stability analyses of submerged slopes are therefore crucial, yet complex steps for hazard assessment, as many geotechnical and morphological factors need to be considered. Typically, deterministic models with...
The limited availability of high-resolution continuous archives, insufficient chronological control, and complex hydro-climatic forcing mechanisms lead to many uncertainties in palaeo-hydrological reconstructions for the Western Mediterranean. In this study we present a newly recovered 19.63 m long core from Lake Sidi Ali in the North African Middl...
Sublacustrine landslide stratigraphy is considered useful for quantitative paleoseismology in low-seismicity settings. However, as the recharging of underwater slopes with sediments is one of the factors that governs the recurrence of slope failures, it is not clear if landslide deposits can provide continuous paleoseismic records in settings of fr...
The consequences of subaquatic slope failures both in the marine and the lacustrine realm can be very serious. For hazard assessments, stability analyses of submerged slopes are therefore crucial steps, yet very complex ones, as they require knowledge of several geotechnical and morphological factors. Traces of subaquatic mass movements are often u...
This article introduces a new high-resolution bathymetric dataset of Lake Zurich, which shows the morphology of the lake bottom in a yet unseen detail. With a Geographic Information System (GIS), traces of subaquatic gravitational mass movements were identified, mapped and classified according to geomorphic parameters. In the new Digital Depth Mode...
The enormous richness of glacial-geomorphic features in the basins of Lake Lucerne (Central Switzerland), such as four large transversal moraines, has been known for many decades (Heim, 1894a; Penck and Brückner, 1909; Hilbe et al., 2011). In this master thesis, the subaquatic glacigenic landforms in the central basins of the lake are mapped and in...
I am looking for a function in R that works similar as the "Interpolate shape" function in ArcGIS.
I know there is the "extract" function from the raster package, which can extract all (elevation) values from a raster within a polygon. The point is that I don't need the elevation values within a polygon, but only for the polygon vertices.
I need to do this for a large dataset of multipolygons, and I want to do it without using ArcGIS.
Thanks a lot,
The aim of this project is to understand trigger mechanisms, preconditions, processes and impacts of lake tsunamis.Consolt our webpage for additional information: www.http://tsunami.ethz.ch/en/home Scientifc questions will be addressed in interdisciplanery working packages: 1) Response: seismological and geotechnical characterization of slope instabilities under seismic shaking 2) Delta: characterization of sub-lacustrine slope failures (collapses) in deltas 3) Paleo: characterization and dating of historical and prehistorical tsunami deposits 4) Wave: investigation of sliding mechanisms and the associated tsunami generation and propagation based on numerical and hydrological models. 5) Hazard: contribution to a sustainable and practical oriented risk management for tsunamis in Swiss lakes.