This study investigates the sensitivity of Distributed Acoustic Sensing (DAS) to small-scale heterogeneities in the subsurface. Through numerical modeling and homogenization theory, we show that DAS strain measurements are highly sensitive to these heterogeneities, unlike traditional velocity measurements, which has implications for various applications.
We demonstrate a non-intrusive method for using Distributed Acoustic Sensing (DAS) on active telecom networks, enabling environmental monitoring without disrupting data traffic.
We model the seafloor strain from tsunamis to show that Distributed Acoustic Sensing (DAS) on fiber optic cables can be a viable tool for early-warning systems.
Exploiting fiber optic cable to scrutinize natural hazards
Outer-rise earthquakes occur in the oceanic plate just before it enters the subduction zone. We investigate this particular type of seismicity to understand its link to the subduction.
E-POST stands for Early-POSTseismic. The project aims at better understanding the transition between the coseismic (the rupture) and the processes immediately following (like afterslip). This is an ANR funded project led by M.Vergnolle.
Inferring the details of slip history on fault.