Conference
Experimental Design for Seismic Mass Movement Monitoring
| العنوان: | Experimental Design for Seismic Mass Movement Monitoring |
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| المؤلفون: | Strutz, Dominik, Kiers, Tjeerd, id_orcid:0 000-0002-8958-5361, Schmelzbach, Cédric, id_orcid:0 000-0003-1380-8714, Maurer, Hansruedi, Curtis, Andrew |
| المصدر: | EGUsphere |
| بيانات النشر: | Copernicus |
| سنة النشر: | 2024 |
| المجموعة: | ETH Zürich Research Collection |
| الوصف: | Mass movements are a significant natural hazard and are expected to increase in frequency as global temperatures rise and extreme weather events become more common. The close observation of mass movements can be essential to minimise their adverse effects on society. The efficient use of the available surveying equipment and resources is important when monitoring mass movements. This is because they are often located in inaccessible terrain, and observing them over months or years can be expensive. A deployment pattern and number of sensors (henceforth, the experimental design) can often be optimised to substantially decrease the uncertainty of scientific results that can be inferred from the observed data. We have developed a novel method to optimise the design of seismic node layouts and fibre-optic based Distributed Acoustic Sensor (DAS) cable pathways for monitoring seismic events. We use it to design surveys to focus on slope instability-induced seismicity. Our general Bayesian experimental design framework can take into account prior information on event locations, subsurface seismic velocity models, the nonlinearity of the physics governing seismic traveltimes, different models of attenuation, and the directional sensitivity of different sensor types (e.g. the inline sensitivity of fibre-optic cables). The introduction of a likelihood that a travel-time measurement will be made at a given station for a given seismic event allows us to account for the effect of attenuation on the observed data, and the angular dependence of one-component measurements such as DAS. We show that we can efficiently design seismic node installations, give quantitative recommendations for DAS cable layouts, and show the feasibility of optimising hybrid designs combining both measurement types. We benchmark the experimental design algorithms using an effectively exhaustive data set collected at the Cuolm da Vi slope instability (Swiss Alps, near Sedrun, in Central Switzerland). The data set includes recordings from over 1000 ... |
| نوع الوثيقة: | conference object |
| وصف الملف: | application/application/pdf |
| اللغة: | English |
| Relation: | http://hdl.handle.net/20.500.11850/714631 |
| DOI: | 10.3929/ethz-b-000714631 |
| الاتاحة: | https://hdl.handle.net/20.500.11850/714631 https://doi.org/10.3929/ethz-b-000714631 |
| Rights: | info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ ; Creative Commons Attribution 4.0 International |
| رقم الانضمام: | edsbas.6C8B46C8 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3929/ethz-b-000714631 |
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