We are glad to announce that our next PhDTalks Seminar will be held on Tuesday 4^th July in Fassò Room (Building 4a), from 5:15 pm to 6:30 pm CET. 

PhDTalks is a series of seminars and discussions between PhD students. The events are aimed at providing a place to network and get in contact with many of the projects developed in our department. 

Speaker Jiayue Lin will talk about “Hazard and risk assessment in urban areas based on 3D Phisics-Based ground shaking scenarios”. 

At the end of each event a small refreshment funded by the department will be available. 

You can watch the event online by clicking here. 

Abstract:

With the growth of global urban population and the concentration of economic activities in cities, the analysis of the impact of devastating earthquakes plays a crucial role in disaster risk reduction in large urban areas. Earthquake ground motion models are a key component in the chain for seismic risk assessment, both within probabilistic and deterministic frameworks, providing estimates of the probability distribution of ground motion intensity measures as a function of explanatory variables, such as magnitude, distance, and site conditions. Standard empirical approaches, i.e. Ground Motion Prediction Equations (GMPEs), are routinely used in engineering practice but suffer from some intrinsic drawbacks, such as: (i) they are poorly calibrated in the near-source region of strong earthquakes; (ii) they cannot account for complex, site-specific, geological conditions; (iii) they do not provide a detailed and region-specific description of spatial variability of ground motion; (iv) they provide only peak values of ground motion without the full waveforms which may be used in dynamic analyses of structures. 3D physics-based numerical simulations (PBS) of seismic ground motion, which reflect the physics of the whole seismic wave propagation problem, from the seismic source, through the propagation path, up to the local site response, have emerged as a promising tool, complementary to GMPEs, for predicting earthquake ground motion and its spatial variability during realistic earthquakes. In this context, the main goal of this PhD thesis is to explore the use of 3D PBS (by the computer code SPEED, http://speed.mox.polimi.it/ ) in seismic risk assessment at urban scale, by coupling an advanced characterization of ground motion and of this spatial variability with state-of-the-art vulnerability and fragility models, with application to the case study of Thessaloniki in Northern Greece.

Speaker’s bio:

Jiayue Lin is a PhD student at Politecnico di Milano within the H2020-Marie-Curie Project, and she has been working on different aspects related to the incorporation of ground shaking scenarios from physics-based numerical simulations in seismic risk models, with application to the Thessaloniki case study. Jiayue is simply loving her life with respecting her inner voice, and at this present, she is missing Traditional Chinese Calligraphy very much, which is her habit that she enjoyed when she was in China.