Stefano Claudio Fabbri

Stefano Claudio Fabbri
Universität Bern | UniBe · Institute of Geological Sciences

PhD

About

34
Publications
7,022
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92
Citations
Introduction
Stefano Claudio Fabbri currently works at the Institute of Geological Sciences, Universität Bern. Stefano does research in Geomorphology and Geology. Their most recent publication is 'Combining amphibious geomorphology with subsurface geophysical and geological data: A neotectonic study at the front of the Alps (Bernese Alps, Switzerland)'.
Additional affiliations
October 2017 - December 2018
Universität Bern
Position
  • PostDoc Position
Education
August 2011 - September 2013
ETH Zurich
Field of study
  • Applied Geophysics
August 2011 - October 2017
ETH Zurich
Field of study
  • Applied Geophysics
September 2007 - August 2011
ETH Zurich
Field of study
  • Geology

Publications

Publications (34)
Article
Full-text available
The modern, over 250-m-deep basin of Lake Constance represents the underfilled northern part of an over 400-m-deep, glacially overdeepened trough, which reaches well into the Alps at its southern end. The overdeepening was formed by repeated glacial advance-retreat cycles of the Rhine Glacier throughout the Middle to Late Pleistocene. A seismic sur...
Article
Full-text available
Mass movements constitute major natural hazards in the Alpine realm. When triggered on slopes adjacent to lakes, these mass movements can generate tsunami-like waves that may cause additional damage along the shore. For hazard assessment, knowledge about the occurrence, the trigger and the geomechanical and hydrogeological mechanisms of these mass...
Conference Paper
Full-text available
Understanding past water-level changes are essential to human development. Changes in lake levels can result in the displacement of populations due to rising water levels, or be a limiting factor in the case of irrigation for agriculture or in terms of water resources. Lake-level fluctuations can be the consequence of outlet modification, human act...
Article
Full-text available
Lake sediments are increasingly used to reconstruct recurrence intervals of large earthquakes-a prerequisite for the establishment of accurate seismic hazard models-because they can record strong seismic shaking as mass-transport deposits (MTDs), turbidites or sediment deformations and often reach back several thousands of years. To derive quantita...
Article
Full-text available
The phase-velocity dispersion curve (DC) is an important characteristic of the propagation of surface waves in sedimentary environments. Although the procedure for DC estimation in onshore environments using ambient vibration recordings is well established, the DC estimation in offshore environments using Ocean Bottom Seismometers (OBS) array recor...
Article
Full-text available
Non-invasive techniques such as seismic investigations and high-resolution multibeam sonars immensely improved our understanding of the geomorphology and sediment regimes in both the lacustrine and the marine domain. However, only few studies provide quantifications of basin wide-sediment budgets in lakes. Here, we use the combination of high-resol...
Article
Full-text available
The frequency of debris flows is hypothesized to have increased in recent decades with enhanced rainstorm activity. Geological evidence to test the relationship between climate and debris flow activity for prehistoric times is scarce due to incomplete sediment records, complex stratigraphy, and insufficient age control, especially in Alpine environ...
Article
Full-text available
Probabilistic seismic hazard assessments are primarily based on instrumentally recorded and historically documented earthquakes. For the northern part of the European Alpine Arc, slow crustal deformation results in low earthquake recurrence rates and brings up the necessity to extend our perspective beyond the existing earthquake catalog. The overd...
Article
Full-text available
Pockmarks are crater-like depressions formed by upward fluid flow (gas and/or liquid) through the unconsolidated sediment column on the floor of oceans and lakes. While pockmarks are well described in the marine realm, they have essentially been overlooked in lacustrine settings, likely due to a lack in economic interest to apply high-resolution hy...
Article
Full-text available
The Eastern European Alps are characterized by slow active deformation with low-to moderate seismicity. Recurrence rates of severe earthquakes exceed the time span of historical documentation. Therefore, historical and instrumental earthquake records might be insufficient for seismic hazard assessment and high-quality paleoseismic data is required....
Article
Full-text available
Large lacustrine mass movements and delta collapses are increasingly being considered as potential tsunamigenic sources and therefore hazardous for the population and infrastructure along lakeshores. Although historical reports document tsunami events in several lakes in Switzerland, and although the propagation of lake tsunamis has been studied by...
Preprint
Full-text available
The phase-velocity dispersion curve (DC) is an important characteristic of the propagation of surface waves in sedimentary environments. Although the procedure for DC estimation in onshore environments using ambient vibration recordings is well established, the DC estimation in offshore environments using arrays of Ocean Bottom Seismometers (OBS) p...
Conference Paper
Full-text available
Lake Iznik (NW Turkey), is bordered by the middle strand of the North Anatolian Fault (MNAF), whose seismic activity is debated because of its quiescence during the instrumental period. In contrast, significant historical activity is documented by several chronicles over the last two millennia. This study aims to get a new insight into its long-te...
Preprint
Full-text available
The frequency of debris flows is hypothesized to increase in recent decades with enhanced rainstorm activity. Geological evidence to test this tendency for prehistoric times is scarce due to incomplete sediment records, complex stratigraphy, and insufficient age control especially in Alpine environments. In lacustrine archives, the link between ons...
Article
Full-text available
Subaquatic mass movements are common in marine and lacustrine environments, but due to their barely predictable nature, direct observations of these processes are limited so that knowledge is only indirectly obtained by investigating the resulting mass-transport deposits (MTDs). Most research focuses on the most common frontally emergent slides, fa...
Article
Full-text available
The seismic activity of the middle strand of the North Anatolian Fault (MNAF), Northwestern Turkey, is debated because of its quiescence during the instrumental period, in contrast to a significant historical activity documented by several chronicles over the last two millennia. Here, we focus on Lake Iznik, bordered by the MNAF, to get a new insig...
Article
Full-text available
The record of past environmental conditions and changes archived in lacustrine sediments serves as an important element in paleoenvironmental and climate research. A main barrier in accessing these archives is the undisturbed recovery of long cores from deep lakes. In this study, we have developed and tested a new, environmentally friendly coring t...
Conference Paper
Full-text available
In intraplate settings with moderate seismicity, recurrence intervals of strong earthquakes (M w >6) typically exceed the short time span of instrumental and historical records. To assess the seismic hazard in such regions, lake sediments are increasingly used as earthquake archives: they can record strong seismic shaking as mass transport deposits...
Conference Paper
Full-text available
Catastrophic, prehistoric rockslides are generally well studied in terms of geological controls on slope instabilities, dating of failure events and characterization of the transported mass. Regarding their triggering mechanism, however, either changing climatic forces or strong seismic shaking are discussed in literature, since such mechanisms can...
Chapter
We report first-ever basin-wide geomorphologic characterization of a high-resolution bathymetry map in a steeply-incised valley-occupying intra-mountainous lake in the Eastern Alps. The resulting new geomorphologic map of Lake Hallstatt is then combined with high-resolution reflection seismic and sedimentary core analyses to document, characterize...
Article
To investigate the history of the Aare Glacier and its overdeepened valley, a high-resolution multibeam bathymetric dataset and a 2D multi-channel reflection seismic dataset were acquired on perialpine Lake Thun (Switzerland). The overdeepened basin was formed by a combination of tectonically predefined weak zones and glacial erosion during several...
Article
In the vicinity of Lake Thun at the front of the Bernese Alps (Switzerland), we performed a multidisciplinary neotectonic study combining onshore and offshore geological data and geophysical measurements in order to identify potentially active fault structures. Paleoseismic reconstructions on the northern margin of the Alps have documented several...
Conference Paper
Full-text available
Recently acquired high-resolution multibeam bathymetry, in combination with a 2D multichannel reflection seismic campaign on perialpine Lake Thun (Switzerland) reveals new insights into the diverse geometry of the lake basin and a so far unknown subaquatic moraine crest with unprecedented clarity. These new data will improve our comprehension conce...
Conference Paper
Full-text available
Perialpine Lake Thun is surrounded by steep mountains with impressive topography and constrained by a basin extending orthogonally to the general strike direction of the Alpine nappe front. The northeastern shoreline is predominantly shaped by the Drusberg-nappe and the Subalpine Molasse fronts, which are in stark contrast to the southwestern shore...
Article
Possibilities to sequester anthropogenic CO2 in deep geological formations are currently under investigation in Switzerland. A first-order appraisal of Switzerland’s potential for CO2 storage in the Swiss Molasse Basin identified a carbonate aquifer (Upper Muschelkalk) sealed by an evaporitic formation (Gipskeuper) as promising seal/aquifer pair. A...

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Projects

Projects (5)
Project
We intend to trace the development of human-environment relations in the UNESCO World Heritage region Hallstatt-Dachstein from the beginnings of underground salt mining in the Hallstatt High Valley in 15th cent. BC until today. Our principal research objective is to investigate how certain types of extreme events (subaerial and subaquatic mass movements, extreme precipitation events) influenced the socioecological systems of the research area. Within this context special attention will be paid to (i) environmental stress caused through mass movements and extreme precipitation events, (ii) environmental stress caused through human impact, (iii) conditions influencing system stability, and (iv) societal response to environmental crisis. The discussion will be based on an integrated and highly resolved long term record of human-environment relations in the Hallstatt-Dachstein region. For this purpose the project will (a) establish an inventory of extreme events, (b) enhance the palaeoenvironmental records of the research area, and (c) investigate human land use dynamics with special attention to change. The research area provides an ideal case study for several reasons: (i) different types of sedimentary archives (lake sediments, bogs) from different altidudinal belts exist; (ii) preliminary studies have demonstrated the considerable potential of these records for palaeoenvironmental reconstructions; (iii) extreme events repeatedly disrupted, respectively altered the economic activities in the region by destroying the prehistoric Hallsttatt salt mines; (iv) due to the long standing salt mining tradition (15th cent BC to the present) and the early onset of tourism (18th cent. AD) the area represents a long term focus of intense human activity and must be considered as a heavily human-impacted environment, and (v) socioeconomic activity is well documented through archaeological research and historical records. The proposed project aims to add to a knowledge pool within the ÖAW’s Earth System Sciences research framework which will allow to assess how extreme events will influence social institutions and networks as well as the natural environment in the future.
Project
The Turkish city of Nicaea, close to Lake Iznik, 5 km north of the Middle strand of the North Anatolian Fault (MNAF), hosted on 325 AD, the first council of Christian, we didn't know where. In 2014, Pr. M. Şahin discovered a basilica in Lake Iznik. None of the 6 earthquakes identified since 2500 yrs is related to its destruction. We propose to date and identify the causes of its destruction. Archaeological excavations will date the operative phase of the basilica. Lacustrine sedimentological cores will be sampled in Iznik and Cerkesli lakes (20 km eastward), to establish the catalogue of past earthquakes, associated with trenches on the MNAF. Ground mechanical tests may show the possible liquefaction of the soil during an earthquake, leading to the basilica submersion. The causes of the lake level variations, with tectonic, hydrological or anthropic origin, will be discriminate thanks to the sedimentological, geochemical and DNA content of the lacustrine sedimentological cores.
Project
Lake Sils and Silvaplana are Alpine lakes are surrounded by a predominantly siliciclastic catchment with minor melanges of marbles. The lakes are located along the Engadine line, an oblique strike-slip fault in the Upper Engadine, in the eastern part of Switzerland. The goal of the project is to better understand depositional processes in the lakes and to investigate the geomorphological architecture of the 700 CE collapsed Isola Delta and associated mass-movement deposit at Lake Sils. Further we are looking for evidences for the occurrence of a lake tsunami that may be caused by the delta collapse.