Attenuation of seismic waves, Dr. Nicola Tisato

Hosted by ARMA UToronto Student Chapter at the University of Toronto and supported by NSERC-Energi Simulation Industrial Research Chair program in fundamental rock physics and rock mechanics. Dr. Nicola Tisato is an experimental rock physicist who combines and proposes new methods to understand natural processes. Since 2016, he has been an assistant professor at the department of geological sciences of The University of Texas, where he is the principal investigator of the Rock Deformation Laboratory. In 2013, under the supervision of Dr. Burlini and Dr. Burg (ETH Zurich), Nicola received his Ph.D. concerning the attenuation of seismic waves in saturated rocks. Nicola has an M.Sc. from the University of Padova (supervisor Prof. Di Toro), and in 2014-2015 he was a post-doc at the University of Toronto (supervisor Prof. Grasselli). Abstract: Subsurface exploration relies on geophysical methods and the physical properties of rocks and saturating fluids. In the case of seismic tomography, the knowledge of rheology is pivotal to infer the structure and the content of subsurface domains. Nonetheless, geophysicists often treat geo‐material as elastic or nearly-elastic overlooking the role of frequency-dependent attenuation in absorbing seismic energy. I will introduce anelasticity in saturated rocks and magmas and how fluids can produce frequency-dependent attenuation and dispersion. Focusing on sandstones saturated with different portions of gas and liquids, I will present laboratory experiments performed to investigate wave‐induced‐gas‐exsolution‐dissolution and how these attenuation mechanisms could be modelled, revealing details of the subsurface. Let's Connect 🡆 Twitter -   / arma_utoronto   🡆 ARMA UToronto Website: https://arma.sa.utoronto.ca/ 🡆 Contact: armautoronto.studentchapter@gmail.com