A5026494752- Seismic Waves and Analysis
- Structural Health Monitoring Techniques
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Seismic Imaging and Inversion Techniques
- Seismic Performance and Analysis
- Noise Effects and Management
- Structural Engineering and Vibration Analysis
- Geophysical Methods and Applications
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Mechanics
- Hydraulic Fracturing and Reservoir Analysis
- Balkan and Eastern European Studies
- European Politics and Security
- Geophysics and Sensor Technology
- Global Socioeconomic and Political Dynamics
ETH Zurich
2022-2024
Board of the Swiss Federal Institutes of Technology
2024
Aarhus University
2020
Abstract Reliable site-specific amplification information can be retrieved using earthquake-based methods that involve the deployment of a permanent (or temporary) network seismic recording stations. Such an endeavour may need to operate for years, especially within regions high risk but low recurrence rates in activity. Hence, time- and cost-effective approaches ambient vibrations are gaining popularity. Among such techniques, canonical correlation approach (CC) collates measured empirical...
Deeply incised valleys or sedimentary basins often exhibit complex resonance patterns that diverge from the commonly assumed one-dimensional (1D) behaviour. In such cases, soil fundamental frequency f0 is not determined by local depth-to-bedrock; instead, constant across central portion of basin section, reflecting overall geometry and material properties infill. These 2D (or even 3D) regimes are challenging to identify generally overlooked in building codes. This study, funded Swiss Federal...
The significance of local site effects in seismic hazard assessment is well-recognised. However, nonlinear soil behaviour during high-strain conditions often neglected or oversimplified, even for large return periods. This study aims to estimate the impact nonlinearity and liquefaction on using multistep approach by Janusz et al. (2024), particular low-to-moderate seismicity areas, where not instrumentally observed hence particularly difficult assess. We focus sites Switzerland, strong...
Seismic hazard assessments in Switzerland rely on the Hazard Model 2015 developed by Swiss Seismological Service. The standards for seismic impacts new constructions or existing structures, as outlined official building code Switzerland, consider zones and local soil conditions. However, no updated currently exist ETH Zurich Paul Scherrer Institute (PSI) buildings. last site-specific studies are now outdated. Existing cantonal classification maps PSI deficient, relying primarily geological...
Abstract. Scientists from different disciplines at ETH Zurich are developing a dynamic, harmonised, and user-centred earthquake risk framework for Switzerland, relying on continuously evolving catalogue generated by the Swiss Seismological Service (SED) using national seismic networks. This uses all available information to assess various stages facilitates widespread dissemination communication of resulting information. Earthquake products services include operational (loss) forecasting...
Amplification factors are often estimated using empirical methods based on earthquake ground motion; however, especially in low-seismicity urban areas, recording a statistically representative number of high-quality signals may take years. Hence, the attempts to use ambient vibration instead have progressed. This includes development hybrid site-to-reference spectral ratio (SSRh) method that combines and recordings. We applied Lucerne area central Switzerland is characterized by...
SUMMARY Seismically triggered subaqueous mass movements in lakes may generate tsunamis that can cause significant damage on the shore. In this study, we assess seismic response and stability of slopes Swiss based recorded seismological data, historical geological information geotechnical surveys. We performed investigations at multiple locations Lake Lucerne using Ocean Bottom Seismometers (OBS). For these locations, derived ground-motion amplification functions from local regional...
SUMMARY The impact of non-linear soil behaviour on seismic hazard in low-to-moderate seismicity areas is often neglected; however, it may become relevant for long return periods. In this study, we used fully 1-D simulations to estimate the site-specific response low area, using city Lucerne Switzerland as an example. constitutive model considers development pore pressure excess and requires calibration complex models, including dilatancy parameters. absence laboratory measurements, mainly...
Abstract Reliable site-specific amplification information can be retrieved using earthquake-based methods, involving the deployment of seismic networks, which, however, may need to operate for years. Hence, time- and cost-effective approaches ambient vibrations are gaining popularity. Among such techniques, hybrid standard spectral ratio method (SSRh) uses simultaneous recordings translated into a prediction local response with limited number instrumented sites earthquake ground-motion data....
Switzerland experienced earthquakes mainly in the Basel area and within its Alpine region, with Canton Valais standing out as one of most active zones. The Rhone Valley, crossing entire canton, is characterized by sediment deposits a thickness reaching up to 800 meters. valley’s topography significant contrast seismic wave velocities between sediments surrounding rock, make it susceptible 2D/3D effects, leading site amplification phenomena. To develop local models that integrate...
Abstract. Scientists at ETH Zurich from different disciplines are developing a dynamic, harmonised and user-centred earthquake risk framework for Switzerland, relying on continuously evolving catalogue generated by the SED using national seismic networks. This uses all available information to assess various stages facilitates widespread dissemination communication of resulting information. Earthquake products services include Operational (Loss) Forecasting (OE[L]F), Early Warning (EEW),...
The study presented in this paper aims to investigate the prospects of using bender elements offshore industry for determining shear wave velocity fragmented, fragile and brittle clay samples cuttings. result from shows that laboratory-measured S-wave velocities intact Søvind Marl, a sedimentary stiff Palaeogene clay, general, are lower than those determined in-situ seismic cone penetration testing. reason may be unavoidable volume-constant distortion changes effective stress conditions...
Assessment of seismic risk should include estimation site response variability, especially in densely populated cities situated soft sedimentary basins. Earthquake recordings can be used to derive empirical amplification functions (EAF), e.g. based on spectral modelling or the standard ratio (SSR) method. However, due high background noise urban areas, a monitoring network take several years record statistically sufficient number events, particularly those that are low-to-moderate seismicity...
<p>Estimation of site effects is an essential part local seismic hazard and risk assessment, especially in densely populated urban areas. The goal this study to assess the response variability city Lucerne (Central Switzerland), located a basin filled with unconsolidated deposits. Even though it low-to-moderate seismicity area, long-term cannot be neglected, particular, because region was struck by strong earthquakes past (i.e. Mw 5.9 1601).</p><p>To...