A5033635971- Geology and Paleoclimatology Research
- Geological formations and processes
- Landslides and related hazards
- Geological Formations and Processes Exploration
- earthquake and tectonic studies
- Geological Modeling and Analysis
- Seismic Imaging and Inversion Techniques
- Geological Studies and Exploration
- Marine and environmental studies
- Mediterranean and Iberian flora and fauna
- Plant Diversity and Evolution
- Isotope Analysis in Ecology
- Microbial Community Ecology and Physiology
- Radiomics and Machine Learning in Medical Imaging
- Geological and Geophysical Studies Worldwide
- Botany and Plant Ecology Studies
- Advanced X-ray Imaging Techniques
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Medical Imaging Techniques and Applications
Universität Innsbruck
2018-2024
Czech Academy of Sciences, Institute of Geology
2020
In slowly deforming tectonic settings (e.g., European Alps), large earthquakes occur too infrequently to be adequately represented in instrumental and historical records. This leads uncertainties inaccuracies of seismic hazard estimations. To extend the record, lacustrine paleoseismologists usually resort sedimentary archive lakes where can recorded as mass-transport deposits associated turbidites. The imprint shaking is generally more subtle poorly understood small (<2 km2) with...
Lake sediments are increasingly used to reconstruct recurrence intervals of large earthquakes - a prerequisite for the establishment accurate seismic hazard models because they can record strong shaking as mass-transport deposits (MTDs), turbidites or sediment deformations and often reach back several thousands years. To derive quantitative information on paleo-earthquake size, sedimentary imprints need be thoroughly calibrated with independent strength. A few calibration studies proposed...
Abstract In lakes, landslides can be studied in high resolution due to their accessibility and limited size. Here, we investigate mass-transport deposits glacigenic Wörthersee (Eastern European Alps) by integration of seismic, sediment core multibeam bathymetric data. Two outstanding landslide events were revealed: the first occurred Late Glacial, leading multiple up 15 m thickness; they consist sandy turbidites mudclast conglomerates, which are overlain a 2.5 thick megaturbidite. The...
Abstract Subaqueous paleoseismic studies used soft sediment deformation structures (SSDS) to discern the shaking strength of past earthquakes, as degree SSDS related Kelvin Helmholtz Instability evolves from disturbed lamination and folds intraclast breccia with higher peak ground accelerations (PGA). We lack comparative different types earthquakes seismogenic sources comprehend how these factors modulate earthquake‐induced deformation. Here, we compile records seven earthquake‐triggered 10...
Abstract Seismic hazard maps are crucial for earthquake mitigation and mostly rely on probabilistic seismic analysis (PSHA). However, the practise value of PSHA under debate because objective testing procedures scarce. We present a lacustrine turbidite record revealing 44 earthquakes over last ~ 14 ka use it to test curves in southern Austria. derive local intensities paleo-earthquakes by applying scaling relationships between sedimentary imprint intensity well-documented historical...
Abstract Glacigenic perialpine lakes can constitute continuous post-last glacial maximum (LGM) geological archives which allow reconstruction of both lake-specific sedimentological processes and the paleoenvironmental setting lakes. Lake Mondsee is one among several in Salzkammergut, Upper Austria, has been previously studied terms paleoclimate, paleolimnology (paleo)ecology. However, full extent environment Late Glacial to Holocene sediment deposition had remained unknown, it was not clear...
The Norian is the longest time interval of Triassic but almost devoid plant fossils in Europe. Seefeld flora thus gives important insights composition this interval. It composed mainly vegetative shoots and reproductive organs conifers (Brachyphyllum,Pagiophyllum,Elatocladus,Voltzia, Cheirolepidiaceae), also includes a few remains putatively assigned to cycadophytes (Taeniopteris) lycophytes (Lepacyclotes). Plant occur organic-rich calcareous laminites middle Formation Northern Calcareous...
&lt;p&gt;Catastrophic, pre-historic rockslides are generally well studied in terms of geological controls on slope instabilities, dating failure events and characterization the transported mass. Regarding their triggering mechanism, however, either changing climatic forces or strong seismic shaking discussed literature, since such mechanisms cannot be unambiguously inferred by directly studying mass scarp.&lt;/p&gt;&lt;p&gt;Here, we present two independent Holocene...
&lt;p&gt;Nano-scale volcanic ash particles (nanotephra) are produced during explosive eruptions. They can travel laterally above the tropopause for thousands of kilometers before returning to Earth&amp;#8217;s surface. Within a short time, they will aggregate, settle, and end up in sedimentary sinks, such as lakes oceans, might be used tephrochronological age marker. These ultra-distal tephra deposits highly diluted by geogenic or biogenic background sedimentation. Consequently,...
&lt;p&gt;In intraplate settings with moderate seismicity, recurrence intervals of strong earthquakes (M&lt;sub&gt;w &lt;/sub&gt;&gt;6) typically exceed the short time span instrumental and historical records. To assess seismic hazard in such regions, lake sediments are increasingly used as earthquake archives: they can record shaking mass transport deposits (MTDs), turbidites or sediment deformations, preserved over several thousands years. provide information on...
&lt;p&gt;Knowledge about the seismic history of a region provides foundation hazard assessment. In slowly deforming regions, such as Eastern European Alps, interseismic periods largest earthquake on fault segment typically exceed time covered by instrumental (~100 years) and historical (~1000 records, potentially leading to inaccurate analysis. To fill this knowledge gap, lacustrine sedimentary sequences are increasingly used. They can archive past earthquakes with local shaking...