Sur ce page vous trouverez une sélection de projets actuels menés par des collaborateurs du Service Sismologique Suisse (SED), ou bien dans lesquels ils ont joué un rôle important. Il ne s'agit pas d'une liste exhaustive, mais d'un choix de projets d'envergure. Les projets sont classés suivant leur principal champ de recherche.
The OPOSSUM project aims at the development and testing of accelerometers and acceleromter networks with the potential to outperform state of the art sensing technology. Accelerometers are powerful, highly versatile and cost-efficient tools used in a wide range of application with specific requirement in terms of frequency response and sensitivity. Accelerometers can record acceleration with frequencies of 1Hz to more than 1MHz. In seismology accelerometers are used in two subfields, among others:
Accelerometers can be deployed on concrete or steel, for example for structural health monitoring of buildings, dams, bridges or wind turbines; they can be deployed in deep boreholes, detecting micro-earthquakes during the reservoir creation of geothermal activity, oil and gas exploration and operations, or to monitor mining operation and the integrity of nuclear waste repositories etc. They can also be used as scientific instruments to better understand fluid-rock interaction or the initiation and propagation of catastrophic natural and induced earthquakes. The OPOSSUM project exploits theoretical and experimental advances in the field of opto-mechanics in the last decade as well as significant improvement on micro-fabrication and modelling of high-quality integrated photonics circuits (PIC) and ultra-high Q (UHQ) mechanical resonators. These two technological building blocks are at the core of a new generation ultra-sensitive accelerometers that are developed at the Centre Suisse d’Electronique et de Microtechnique (CSEM), with capabilities of exceeding the current generation of accelerometers in numerous ways. |
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Chef de projet au SED | Linus Villiger |
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Source de financement | SNF Bridge |
Durée | 2021 - 2025 |
Mots-clef | Ultra-sensitive seismic sensors; Optomechanics; High Q mechanical resonators; Integrated photonics; energy and exploration; structural health monitoring; Induced earthquakes |
Domaine de recherche | Seismic sensor development |
The Swiss Energy Strategy foresees CO2 capture and underground storage, possibly abroad, among the necessary measures to reach the net zero target by 2050. DemoUpCARMA, the partner project of DemoUpStorage, explores as one pathway to negative emissions the transport and storage of Swiss biogenic CO2 in Islandic basalt as well as this pathway’s potential for upscaling. Since a safe and permanent storage of the Swiss CO2 is an indispensable requirement, DemoUpStorage takes the lead in closely monitoring the injection and the dispersion of the Swiss CO2 in the Islandic underground at a site that has high potential for upscaling. For the injection, a novel technique is used, where the CO2 is dissolved in sea water instead of fresh water. The findings of DemoUpStorage will further advance the Swiss Roadmap for geological CO2 storage through knowledge acquisition and transfer, as well as capacity building. DemoUpStorage has the following objectives:
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Chef de projet au SED | Prof. Dr. Stefan Wiemer |
Membres du projet au SED | Dr. Alba Zappone, Dr. Anne Obermann, Dr. AntonioPio Rinaldi, Dr. Michèle Marti, Dr. Irina Dallo, Stefanie Zeller, Jonas Junker |
Source de financement | SFOE, FOEN |
Durée | 2022 - 2024 |
Mots-clef | CO2 storage, monitoring CO2 mineralization |
Domaine de recherche | CO2 storage |
Lien vers le site Internet du projet | |
Publications |
Stavropoulou E, Laloui L (2023). CO2 storage in basalts: the impact of mineralisation on the hydromechanical response of the material. Proceedings of the 9ICEG 9th International Congress on Environmental Geotechnics 25-28 June, 2023 | Chania, Greece. doi: 10.53243/ICEG2023-115 |
Scientists from the SED are exploring the potential of Earthquake Early Warning (EEW) in Central America. This is a multi-phase project funded by Swiss Agency for Development and Cooperation (SDC) at the Federal Department of Foreign Affairs (FDFA). In Phase 1 (2016-2017), SED worked with colleagues at INETER (a government agency in Nicaragua responsible for Natural Hazards, who operate the national seismic network), to build and implement a prototype EEW system in Nicaragua. In Phase 2 (2018-2020), this prototype system will be extended to other countries in Central America with the collaboration of local scientists, and we will explore how a public EEW could be implemented. The region suffers from large tsunamigenic earthquakes generated along the subduction zone, and also moderate crustal earthquakes that have in the recent past produced heavy damage, such as the M6.2 1972 earthquake that devastated Managua. The subduction zone events are often characterized by slow rupture velocity (most recently a M7.7 1992 earthquake - the first slow earthquake ever documented - and a M7.3 in 2014) Earthquake Early Warning (EEW) is a tool that can rapidly characterize on-going earthquakes, and potentially provide seconds to 10s of seconds notification of impending strong shaking in advance of its occurrence. EEW can play an important role as part of a seismic risk reduction program, which is critical in the Central American region that has such a high seismic hazard. Additionally, making a seismic network capable of operating and maintaining an EEW system requires the network to achieve the highest standards in network performance - including station quality, speed and reliability of data communications, and robustness of the seismic network hub that runs the EEW software. Optimal network performance is also critical for other applications such as tsunami warning, volcano monitoring, and enables downstream scientific studies, eg on local Earth structure. On 9 June 2016, just weeks after the first software was installed and before efforts to optimise had begun, a shallow M6.3 event occurred on the border with El Salvador that was detected by our system after 29s. Though far from the delay time required for operational EEW, this does demonstrate the promise of the existing infrastructure. With an ideal seismic network (all stations fully operational, recording strong motion and with minimal data delay) the existing network density can provide first EEW alerts within 8-12s for shallow on-shore earthquakes. This corresponds to a blind zone on the order of 20-30km around the epicenter where no advanced warning will be available. Outside the blind zone, for large earthquakes, this type of EEW can provide warning in advance of the strongest shaking for areas that will experience shaking of intensity VI on the Modified Mercalli Scale. Transfer of EEW capacity from SED to Central American Institutes is feasible because we all use the same basic software for seismic network monitoring - SeisComP3 - that the SED has used to develop EEW. SED use 2 standard algorithms to provide EEW - the Virtual Seismologist and the Finite Fault Detector. We use the EEW Display (EEWD) to deliver desktop alerts to early adopters and testers. EEW can work in Central America because the seismic networks are already relatively dense and data sharing is well-established and effective - necessary as earthquakes can have impacts beyond a single country. Currently, EEW alerts in the region are delayed or initially incorrect primarily because the seismic networks are relatively unreliable and not yet optimised for EEW. By adopting a long term strategy that focuses on enabling EEW, including adding additional strong motion stations, this will improve. The Phase 2 project objectives are to 1) review the performance of, and propose improvements to the seismic network in the region, in an effort to optimise their capacity for EEW; 2) to develop EEW algorithms tailored to the seismicity of Central America, with implementation in standard open source software, and transfer know-how and operation to local monitoring institutions; 3) head towards public EEW by engaging with potential key end-users, civil defence and governments, exploring technical means by which EEW can be provided to public and private users, and communicating with social scientists on what is the most effective EEW message provide to the public, and how to communicate this to the public. |
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Chef de projet au SED | Dr. John Clinton |
Membres du projet au SED | Frédérick Massin, Roman Racine, Maren Böse |
Source de financement | Swiss Agency for Development and Cooperation (DEZA / SDC) |
Durée | Phase 3: Jan 2022 - March 2024; Phase 2: May 2018 - April 2021; Phase 1: January 2016 - January 2018 |
Mots-clef | Earthquake Early Warning, Seismic Networks, Nicaragua, Central America, INETER, DEZA/SDC |
Domaine de recherche | Earthquake Early Warning, Real-time monitoring, Network Seismology |
California, Oregon, and Washington are currently implementing a public earthquake early warning (EEW) system, called ShakeAlert. To detect earthquakes and to generate alerts, ShakeAlert feeds data from the seismic and geodetic networks operated along the US West Coast into two algorithms: the point-source EPIC (formerly known as ElarmS and Onsite), and the finite-source Finite-Fault Rupture Detector (FinDer) algorithm. Alert messages from EPIC and FinDer are aggregated into a single alert feed. ShakeAlert started in 2012 as a demonstration system for EEW and provided warnings of imminent strong ground shaking to a selected group of test users. At that stage, the Virtual Seismologist (VS; Cua and Heaton, 2009), implemented and tested by the SED, was part of the system. In 2013, California passed legislation to implement a public warning system. After the US Congress approved the funding in 2014, the transition to a public system started. A limited public roll-out of ShakeAlert started in California, Oregon, and Washington in the fall of 2018. About one year later the testing of public alerting on mobile devices (phones) was rolled out in California. Washington, and Oregon followed in 2021. Alerts can be received as Wireless Emergency Alerts (WEA) on mobile devices, as well as through apps (e.g. MyShake, QuakeAlertUSA, and ShakeReadySD), or through a ShakeAlert-powered earthquake alert feature that is integrated into the Android Operating System. The SED collaborates with the ShakeAlert team (US Geological Survey, Caltech, UC Berkeley, University of Washington, and University of Oregon) in the development, implementation, and testing of FinDer (Böse et al., 2012; Böse et al., 2015; Böse et al., 2018; Böse et al., 2023). |
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Chef de projet au SED | Dr. Maren Böse |
Membres du projet au SED | Dr. Frederick Massin, Dr. Savas Ceylan, Dr. John Clinton |
Source de financement | United States Geological Survey (USGS) |
Durée | Since 2012 |
Mots-clef | Earthquake early warning, real-time seismology |
Domaine de recherche | Earthquake Early Warning |
Lien vers le site Internet du projet | |
Publications |
Böse, M., J. Andrews, R. Hartog, and C. Felizardo (2023). Performance and Next Generation Development of the Finite-Fault Rupture De-tector (FinDer) within the United States West Coast ShakeAlert Warning System. Bull. Seismol. Soc. Am. 113 2, 648-663. doi: 10.1785/0120220183 Chung, A., M. Meier, J. Andrews, M. Böse, B. Crowell, J. McGuire, D. Smith (2020). ShakeAlert Earthquake Early Warning System Performance during the 2019 Ridgecrest Earthquake Sequence. Bull. Seismol. Soc. Am. 110 (4), 1904–1923. doi: 10.1785/0120200032 Böse, M., D.E. Smith, C. Felizardo, M.-A. Meier, T.H. Heaton, J.F. Clinton (2018). FinDer v.2: Improved Real-time Ground-Motion Predictions for M2-M9 with Seismic Finite-Source Characterization. Geophys. J. Int. 212, 725-742. Behr, Y., J. F. Clinton, P. Kästli, C. Cauzzi, and M.-A. Meier (2015). Anatomy of an Earthquake Early Warning (EEW) Alert : Predicting Time Delays for an End-to-End EEW System. Seismol. Res. Lett. 86 (3), 1-11. doi: 10.1785/0220140179 Meier, M.-A., T. Heaton, and J. Clinton (2015). The Gutenberg Algorithm: Evolutionary Bayesian Magnitude Estimates for Earthquake Early Warning with a Filter Bank. Bull. Seismol. Soc. Am. 105 (5), 2774-2786. doi: 10.1785/0120150098 Böse, M., C. Felizardo, & T.H. Heaton (2015). Finite-Fault Rupture Detector (FinDer): Going Real-Time in Californian ShakeAlert Warning System. Seismol. Res. Lett. 86 (6), 1692-1704. Böse, M., R. Graves, D. Gill, S. Callaghan, and P. Maechling (2014). CyberShake-Derived Ground-Motion Prediction Models for the Los Angeles Region with Applica-tion to EEW. Geophys. J. Int. 198 (3), 1438-1457. Given, D.D., Cochran, E.S., Heaton, T., Hauksson, E., Allen, R., Hellweg, P., Vidale, J., and Bodin, P. (2014). Technical implementation plan for the ShakeAlert production system—An Earthquake Early Warning system for the West Coast of the United States. U.S. Geological Survey Open-File Report 2014–1097, 25. doi: 10.3133/ofr20141097 Böse, M., R. Allen, H. Brown, C. Cua, M. Fischer, E. Hauksson, T. Heaton, M. Hellweg, M. Liukis, D. Neu-hauser, P. Maechling, P. and CISN EEW Group (2013). CISN ShakeAlert – An Earthquake Early Warning Demonstration System for California. In: F. Wenzel and J. Zschau: Early Warning for Geological Disasters - Scientific Methods and Current Practice (ISBN: 978-3-642-12232-3). Springer Berlin Heidelberg New York: Böse, M., T.H. Heaton, & E. Hauksson (2012). Real-time Finite Fault Rupture Detector (FinDer) for Large Earthquakes. Geophys. J. Int. 191 (2), 803-812. Böse, M., T. Heaton and E. Hauksson (2012). Rapid estimation of earthquake source and ground-motion parameters for earthquake early warning using data from single three-component broadband or strong-motion sensor. Bull. Seismol. Soc. Am. 102 (2), 738-750. doi: 10.1785/0120110152 Böse, M. & T.H. Heaton (2010). Probabilistic Prediction of Rupture Length, Slip and Seismic Ground Motions for an Ongoing Rupture: implications for Early Warning for Large Earthquakes. Geophys. J. Int. 183 (2), 1014-1030. doi: 10.1111/j.1365-246X.2010.04774.x Cua, G. B., M. Fischer, T. H. Heaton, and S. Wiemer (2009). Real-time Performance of the Virtual Seismologist Earthquake Early Warning Algorithm in Southern California. Seismol. Res. Lett. 80 (5), 740-747. doi: 10.1785/gssrl.80.5.740 |
Présentations |
The project Earthquake Risk Model Basel-Stadt (ERM-BS) 2019 to 2023 aims at developing a site specific seismic hazard and risk framework for the Swiss canton of Basel-Stadt. It is a follow-up of the projects Microzonation (2003 - 2009) and Basel Erdbebenvorsorge (2013 - 2016) funded by the canton of Basel-Stadt in its effort to set an earthquake risk mitigation and crisis management strategy for the canton. This project makes a step forward by attempting to develop a 3D integrated geological-seismological model of Basel, which will explicitly account for the complex geological conditions at the surface and at depth. Ground motion amplification models will be developed and validated with earthquake recordings from the permanent and temporary seismic network in the region. |
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Chef de projet au SED | Prof. Donat Fäh |
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Membres du projet au SED | Afifa Imtiaz, Francesco Panzera |
Source de financement | Kanton Basel-Stadt |
Durée | 2019-2023 |
Mots-clef | 3D model, Basel city, ground motion amplification, seismic network, site effects, cantonal building database, seismic vulnerability, seismic risk |
Domaine de recherche | Engineering Seismology, Seismic Hazard & Risk |
The third phase of this project is split into 3 subtasks with the main goal to improve regional and local seismic hazard assessment in Switzerland; with particular focus to the sites of potential regions of nuclear repositories. These sub-projects are: Subproject 1 aims to improve models and develop methods for the prediction of strong ground motion in Switzerland at the surface and at depth. Two main approaches are investigated: ground motion prediction equations (GMPEs) and stochastic simulation models. Both approaches require calibration to the local seismicity and careful consideration of their extrapolation to large magnitude events which have, as yet, not been instrumentally recorded in Switzerland. In this context, we study the effect of source- and site-related parameters, as stress drop and kappa. Subproject 2 is focused on earthquake scenario modeling for Switzerland and exploration of the physical limits on ground motion. Our modeling combines realistic rupture along irregular fault surfaces and wave propagation in complex heterogeneous media at high frequency, with focus on underground repositories. Moreover we investigate the plastic and non-linear behavior of soft sediments when subject to high-amplitude Mach waves, conducting CPT measurements to calibrate our numerical models. Subproject 3 focuses on numerical modeling the induced seismicity during tunnel excavation. Simulations will be performed using both thermo-hydro-mechanical coupled model and statistical model. We will adapt existing models for induced earthquakes to the conditions typically met in deep geological repositories. Available geomechanical faulting models will be used during the validation and calibration stage. Finally, the results will be used as input for Subproject 1 and 2. |
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Chef de projet au SED | Prof. Donat Fäh
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Membres du projet au SED | Miroslav Hallo, Paolo Bergamo, Antonio Rinaldi |
Source de financement | Swiss Federal Nuclear Safety Inspectorate - ENSI |
Durée | 2010-2014 (1st phase), 2014-2018 (2nd phase), 2018-2022 (3rd phase), 2022-2026 (4th phase) |
Mots-clef | Ground motion prediction equations, ground motion modelling, induced seismicity |
Domaine de recherche | Swiss Seismicity, Earthquake Hazard & Risk |
/ Produits |
D. Fäh, S. Wiemer, D. Roten, B. Edwards, V. Poggi, C. Cauzzi, J. Burjanek, M. Spada, R. Grolimund, M. Gisler, G. Schwarz-Zanetti, P. Kästli (2012). Expertengruppe Starkbeben. ENSI Erfahrungs- und Forschungsbericht 2011, 173-182. Eidgenösisches Nuklearsicherheitsinspektorat ENSI. PDF D. Fäh, S. Wiemer, B. Edwards, V. Poggi, D. Roten, R. Grolimund, M. Spada, J. Wössner (2013). Expertengruppe Starkbeben. ENSI Erfahrungs- und Forschungsbericht 2012, 173-181. Eidgenösisches Nuklearsicherheitsinspektorat ENSI. PDF D. Fäh, S. Wiemer, B. Edwards, V. Poggi, D. Roten, R. Grolimund, M. Spada, B. Schechinger, J. Woessner (2014). Expertengruppe Starkebeben. ENSI Erfahrungs- und Forschungsbericht 2013, 161-170. Eidgenösisches Nuklearsicherheitsinspektorat ENSI. PDF D. Fäh, S. Wiemer, B. Edwards, V. Poggi, D. Roten, R. Grolimund, M. Spada, B. Schechinger , T. Tormann, J. Woessner (2015). Earthquake Strong Motion Research. ENSI Erfahrungs- und Forschungsbericht 2014, 171-180. Eidgenösisches Nuklearsicherheitsinspektorat ENSI. PDF |
This working group gathers the researchers with competences in site characterization in order to discuss and improve the work performed in different projects, especially for sites with new permanent seismic stations. The available tools for processing, archiving and disseminating are shared within the group. The group is responsible for setting up and updating the SED database for site characterization. The group meets regularly to discuss new results and to review the work before it is published. |
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Chef de projet au SED | Prof. Donat Fäh |
Membres du projet au SED | Paolo Bergamo, Dario Chieppa, Franziska Glüer, Miroslav Hallo, Mauro Häusler, Afifa Imtiaz, Agostiny Lontsi, Francesco Panzera, Paulina Janusz, Anastasiia Shynkarenko |
Source de financement | Actual projects with site characterization work: Strong motion renewal project phase 2; Earthquake risk model for Switzerland; Earthquake risk model for Basel; 4D seismic response and slope failure; Lake Tsunamis: causes, consequences and hazard; and others) |
Durée | 2010 - present |
Mots-clef | Site characterization, strong motion stations, broadband stations, site response, site effects, site amplification |
Domaine de recherche | Earthquake Hazard & Risk, Engineering Seismology |
Lien vers le site Internet du projet | |
Publications |
Bergamo., P., Hammer, C. and Fäh, D. (2021). Correspondence between Site Amplification and Topographical, Geological Parameters: Collation of Data from Swiss and Japanese Stations, and Neural Networks‐Based Prediction of Local Response. Bulletin of the Seismological Society of America 112 (2). Lien doi: 10.1785/0120210225 Michel, C., Fäh, D., Edwards, B., & Cauzzi, C. (2017). Site amplification at the city scale in Basel (Switzerland) from geophysical site characterization and spectral modelling of recorded earthquakes. Physics and Chemistry of the Earth, Parts A/B/C 98, 27-40. doi: 10.1016/j.pce.2016.07.005 Poggi, V., Burjanek, J., Michel, C., & Fäh, D. (2017). Seismic site-response characterization of high-velocity sites using advanced geophysical techniques: application to the NAGRA-Net. Geophysical Journal International 210(2), 645–659. doi: 10.1093/gji/ggx192 Michel, C., Edwards, B., Poggi, V., Burjanek, J., Roten, D., Cauzzi, C. and Fäh, D. (2014). Assessment of site effects in Alpine regions through systematic site characterization of seismic stations. Bulletin of the Seismological Society of America 104(6), 2809-2826. doi: 10.1785/0120140097 Burjánek, J., Edwards, B. and Fäh, D. (2014). Empirical evidence of local seismic effects at sites with pronounced topography: a systematic approach. Geophysical Journal International 197(1), 608-619. doi: 10.1093/gji/ggu014 Edwards, B., Michel, C., Poggi, V. and Fäh D. (2013). Determination of Site Amplification from Regional Seismicity: Application to the Swiss National Seismic Networks. Seismological Research Letters 84(4), 611-621. doi: 10.1785/0220120176 Hobiger, M., Bergamo, P., Imperatori, W., Panzera, F., Lontsi, M.S., Perron, V., Michel, C., Burjánek, J., Fäh, D. (2021). Site Characterization of Swiss Strong‐Motion Stations: The Benefit of Advanced Processing Algorithms. Bulletin of the Seismological Society of America 111 (4), 1713-1739. Lien doi: 10.1785/0120200316 Panzera, F., Alber, J., Imperatori, W., Bergamo, P., Fäh, D. (2022). Reconstructing a 3D model from geophysical data for local amplification modelling: The study case of the upper Rhone valley, Switzerland.. Soil Dynamics and Earthquake Engineering 155. Lien doi: 10.1016/j.soildyn.2022.107163 Glueer, F., Häusler, M., Gischig, V., Fäh, D. (2021). Coseismic Stability Assessment of a Damaged Underground Ammunition Storage Chamber Through Ambient Vibration Recordings and Numerical Modelling. Frontiers of Earth Science 9 (1159), 773155. Lien doi: 10.3389/feart.2021.773155 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. Geophysical Journal International 227 (3), 1857-1878. Lien doi: 10.1093/gji/ggab314 Lontsi, A.M., Shynkarenko, A., Kremer, K., Hobiger, M., Bergamo, P., Fabbri, S.C., Anselmetti, F.S. and Fäh, D. (2021). 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. Pure and Applied Geophysics. Lien doi: 10.1007/s00024-021-02923-8 Häusler, M., Michel, C., Burjánek, J., and Fäh, D. (2021). Monitoring the Preonzo rock slope instability using resonance mode analysis. J. Geophys. Res. Earth Surf. e2020JF005709. Lien doi: 10.1029/2020JF005709 Hallo, M., Imperatori, W., Panzera, F., Fäh, D. (2021). Joint multizonal transdimensional Bayesian inversion of surface wave dispersion and ellipticity curves for local near-surface imaging. Geophysical Journal International 226 (1), 627-659. doi: https://doi.org/10.1093/gji/ggab116 Bergamo, P., Hammer, C., and Fäh, D. (2021). On the Relation between Empirical Amplification and Proxies Measured at Swiss and Japanese Stations: Systematic Regression Analysis and Neural Network Prediction of Amplification. Bulletin of the Seismological Society of America 111 (1), 101-120. Lien doi: 10.1785/0120200228 Chieppa, D., Hobiger, M.& D. Fäh (2020). Ambient Vibration Analysis on Large Scale Arrays When Lateral Variations Occur in the Subsurface: A Study Case in Switzerland. Pure and Applied Geophysics 177, 4247–4269. Lien doi: 10.1007/s00024-020-02516-x Chieppa, D., Hobiger, M. & D. Fäh (2020). Ambient vibration analysis on seismic arrays to investigate the properties of the upper crust: an example from Herdern in Switzerland. Geophysical Journal International ggaa182. doi: 10.1093/gji/ggaa182 Häusler, M Michel, C. Burjanek, J. & D. Fäh (2019). Fracture Network Imaging on Rock Slope Instabilities Using Resonance Mode Analysis. Geophysical Research Letters Volume 46, Issue 12, 6497-6506. doi: 10.1029/2019GL083201 Kleinbrod, U., Burjanek, J., Fäh, D (2019). Ambient vibration classification of unstable rock slopes: A systematic approach. Engineering Geology Volume 249, 198-217. Maranò, S., Hobiger, M., Bergamo, P. & D. Fäh (2017). Analysis of Rayleigh waves with circular wavefront: a maximum likelihood approach. Geophysical Journal International 210, 3, 1570–1580. doi: https://doi.org/10.1093/gji/ggx225 Burjánek, J., Gischig, V., Moore, J.R. and Fäh, D. (2018). Ambient vibration characterization and monitoring of a rock slope close to collapse. Geophys. J. Int. 212, 297–310. Lien doi: 10.1093/gji/ggx424 Maranò, S., Hobiger, M. & D. Fäh (2017). Retrieval of Rayleigh Wave Ellipticity from Ambient Vibration Recordings. Geophys. J. Int.. Lien doi: 10.1093/gji/ggx014 Kleinbrod, U., Burjánek, J., Fäh, D. (2017). On the seismic response of instable rock slopes based on ambient vibration recordings. Earth. Planets and Space 69: 126. doi: 10.1186/s40623-017-0712-5 Kleinbrod, U., Huggentobler, M., Burjánek, J., Aman, F., Fäh, D. (2017). A comparative study on seismic response of two unstable rock slopes within same tectonic setting but different activity level. Geophys. J. Int. 211, 3, 1428-1448. Lien doi: 10.1093/gji/ggx376 Panzera, F., Bergamo, P. & Fäh, D. (2020). Reference soil condition for intensity prediction equations derived from seismological and geophysical data at seismic stations. Journal of Seismology 25 (1). Lien doi: 10.1007/s10950-020-09962-z |
Centres de population situés à quelques centaines de mètres peuvent être affectés de manière très différente par le même tremblement de terre. La cause est la réponse sismique locale, ou amplification du site, qui est déterminée par le type de sol (ex. sédiment meuble ou roche) mais aussi par la géométrie du sous-sol (une vaste plaine ou un bassin sédimentaire). Dans cette perspective, les vallées alpines sont des milieux géologiques particuliers, car l'épaisseur des dépôts sédimentaires augmente de quelques mètres au bord du fond de vallée à plusieurs centaines de mètres en son centre; cette condition détermine des effets particuliers de réponse aux tremblements de terre. De plus, les vallées ne sont pas secondaires du point de vue du risque, car elles peuvent être densément peuplées et abriter des infrastructures critiques pour le transport à travers des Alpes. |
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Chef de projet au SED | Donat Fäh |
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Membres du projet au SED | Paolo Bergamo, Dario Chieppa |
Source de financement | OFEV (Office fédéral de l'environnement) |
Durée | 2021 - 2024 |
Mots-clef | Earthquake site response, alpine valleys, building codes |
Domaine de recherche | Sismologie de l’ingénieur |
Publications |
Arbeitsgruppe Erdbeben der Normenkommission SIA 261 (2019). Aktualisierung der Erdbebeneinwirkungen der Norm SIA 261:2014 . Bericht z.H. der Normkommission SIA 261 und der Kommission für technische Normen (KTN) Referenz/Aktenzeichen: S041-0132. In: Bundesamt für Umwelt BAFU Abteilung Gefahrenprävention, 26.03.2019. BAFU (2020). Erdbebenrisikomanagement - Massnahmen des Bundes. Bericht an den Bundesrat. Standbericht und Planung für den Zeitraum 2021 bis 2024. Bundesamt für Umwelt, Dezember 2020. |
This is the 1st subproject of the “ENSI – SED-Erdbebenforschung zu Schweizer Kernanlagen” project. This subproject aims to improve source-scaling and attenuation models and to develop methods for the prediction of strong ground motion in Switzerland both at the surface as well as at depth. Two main approaches are investigated: ground motion prediction equations (GMPEs) and stochastic simulation models. Both approaches require adaptions to the local seismicity and careful consideration of their calibration to Swiss conditions. The Fourier spectral and stochastic models correspond to the current state of research and have some advantages over the empirical attenuation relationships, as it is possible to adjust the model to specific local site conditions. The complete understanding in terms of physical parameterization of such models is crucial in order to decouple different effects, which allow building robust predictive models that scale appropriately to large magnitude events. In this regard, variability in source parameter such as stress drop and corner frequency is crucial. Similarly, variability in site-related attenuation parameter kappa (local intrinsic and scattering attenuation) is also need to be well understood. Developed stochastic and duration models from Japanese data allow the review of the Swiss model for large magnitudes in the different distance ranges and at various rock sites which have, as yet, not been instrumentally recorded in Switzerland. The local weak-to-moderate seismicity is used to calibrate the predictive models. The long-term goal is to develop an improved stochastic simulation model for Switzerland allowing existing uncertainties to be rigorously evaluated and reduced. In future, such models will also allow an assessment of ground motion caused by induced seismicity due to the activation of existing fractures and/or the generation of new fractures. Moreover, we developed, validated, and applied a physics-based stochastic model to characterize high-frequency ground motion at depth in the Fourier domain. The goal of it is to be able to predict future ground motions at deep geological disposals. |
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Chef de projet au SED | Prof. Donat Fäh |
Membres du projet au SED | Miroslav Hallo, Paolo Bergamo |
Source de financement | Swiss Federal Nuclear Safety Inspectorate - ENSI |
Durée | 2014-2026 |
Mots-clef | Ground motion prediction equations, Fourier spectral models, stochastic ground motion models, ground motion duration models. |
Domaine de recherche | Earthquake Hazard & Risk, Engineering Seismology |
Publications |
Hallo, M., Bergamo, P., and Fäh, D. (2022). Stochastic model to characterize high-frequency ground motion at depth validated by KiK-net vertical array data. Bulletin of the Seismological Society of America (under review).. Bard, P.-Y., Bora, S. S., Hollender, F., Laurendeau, A., and Traversa, P. (2020). Are the standard VS-Kappa host-to-harget adjustments the only way to get consistent hard-rock ground motion prediction?. Pure and Applied Geophysics 177, 2049–2068. doi: 10.1007/s00024-019-02173-9 Edwards, B., and Fäh, D. (2017). Prediction of earthquake ground motion at rock sites in Japan: evaluation of empirical and stochastic approaches for the PEGASOS Refinement Project. Geophysical Journal International 211(2), 766-783. doi: 10.1093/gji/ggx328 Pilz, M., and Fäh, D. (2017). The contribution of scattering to near-surface attenuation. Journal of Seismology 21 (4), 837–855. doi: 10.1007/s10950-017-9638-4 Edwards, B., Cauzzi, C., Danciu, L., and Fäh, D. (2016). Region-specific assessment, adjustment, and weighting of ground-motion prediction models: Application to the 2015 Swiss seismic-hazard maps. Bulletin of the Seismological Society of America 106 (4), 1840-1857. doi: 10.1785/0120150367 Edwards, B., Ktenidou, O.-J., Cotton, F., Abrahamson, N., Van Houtte, C. and Fäh, D. (2015). Epistemic uncertainty and limitations of the Kappa0 model for near-surface attenuation at hard rock sites. Geophysical Journal International 202 (3), 1627-1645. doi: 10.1093/gji/ggv222 Edwards, B. & Fäh, D. (2014). Ground motion prediction equations. Link doi: 10.3929/ethz-a-010232326 Edwards, B. and Fäh D. (2013). A Stochastic Ground‐Motion Model for Switzerland. Bulletin of the Seismological Society of America 103, 78-98. doi: 10.1785/0120110331 Edwards, B., Michel, C., Poggi, V. and Fäh, D. (2013). Determination of Site Amplification from Regional Seismicity: Application to the Swiss National Seismic Networks. Seism. Res. Lett. 84(4), 611-621. doi: 10.1785/0220120176 Poggi, V., Edwards, B. and Fäh, D (2013). Reference S-wave velocity profile and attenuation models for ground-motion prediction equations: application to Japan. Bulletin of the Seismological Society of America 103(5), 2645-2656. doi: 10.1785/0120120362 Poggi, V., Edwards, B. and Fäh, D. (2012). Characterizing the vertical to horizontal ratio of ground-motion at soft sediment sites. Bulletin of the Seismological Society of America 102(6), 2741-2756. doi: 10.1785/0120120039 Poggi, V., Edwards, B. and Fäh, D. (2011). Derivation of a Reference Shear-Wave Velocity Model from Empirical Site Amplification. Bulletin of the Seismological Society of America 101(1), 258-274. doi: 10.1785/0120100060 |