Open Until: 09/01/2021
The goal of this postdoc project is to use seismic noise records to study the spatio-temporal evolution of the crust in seismically active regions in Europe in order to 1) get a better understanding of the seismic cycle and in particular the role of fluid pressure change at depth and 2) to look for precursor changes in the medium that may occur before large magnitude (M>5) earthquakes.
Depending on the candidate interest, two main directions can be explored:
1) Using seismic noise correlations to monitor the temporal evolution of the crust in southern Europe including the western Alps, Greece, the Apennines (Italy) and Greece using a large dataset of 10 years of continuous records (2011-2021). Our goal is not only to measure the evolution of seismic wave velocities. We also want to develop new types of measurements to monitor changes of attenuation in the medium. A particular attention will be devoted to the physical interpretation of the results. Hence, the results will be carefully analyzed to distinguish changes of the medium coming from environemental factors, from changes that relates to seismicity and fault dynamics.
2) Automating the detection of low signal to noise ratio earthquakes and looking for diffuse tremor-like signals in the Gulf of Gorinth (Greece). Indeed, the rift of Corinth is one of the most active tectonic structure of the euromoediterranean area. The high extensional deformation rate (~15mm/year) of the Corinth Gulf is mainly accommodated by seismic swarms, and occasionally by mainshocks. Hence a few large magnitude earthquake (M>6) occur per century. Understanding the inter-play between swarms and large magnitude earthquakes is a key question. Here will attempt to use novel detection method look for either impulsive or diffuse (i.e earthquake or tremor like) signals in order to have a better knowledge of the dynamic of this region.
French is not required. Applicants whose first language is not French must have communication skills in written and spoken English
18 months full time. The position can start at anytime between October, 1 st 2021 and Jan. 15th 2022. It will remain open until filled. Salary follows French university standard and depends on the research experience since the PhD defense.
Laurent Stehly (ISTerre, Grenoble), in collaborations with the RISE project ([url=http://www.rise-eu.org/home/]http://www.rise-eu.org/home/[/url]) and with researchers at ISTerre working on monitoring and detection.
Applicants should send a cover letter, curriculum vitae and a statement of research interests to firstname.lastname@example.org