Distributed Fiber Optic Sensing (DFOS) is revolutionizing seismology thanks to dense measurements at an unprecedented scale. In this talk, I will describe the main principles behind the technology, as well as multiple scientific and practical questions that we could answer with fiber-optic sensing: vehicle tracking in urban environments, microearthquake location and fault plane reconstruction, an inversion approach to jointly resolve subsurface and structural parameters, and finally – a recent experiment in which we deployed a joint fiber-accelerometer in an abandoned well near the Kinneret, targeting local undetected earthquakes.
