DAS

The fin whale is a key species in marine ecosystems and a sensitive indicator of ocean health. Yet monitoring its low-frequency calls at scale remains challenging. Distributed acoustic sensing (DAS) on subsea fiber cables can record thousands of …

New publication in JASA presenting a deep-learning pipeline for detecting fin whale calls using DAS data from the Arctic and Mediterranean.

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.