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The University of Southampton
NEXUSS - Next Generation Unmanned Systems Science

Pierre Cauchy


My research is about combining Passive Acoustic Monitoring (PAM) techniques with ocean gliders (silent autonomous underwater vehicles), to develop new ways of observing the oceanic environment.

The long range, low cost, high-resolution and multidisciplinary capabilities of a glider, together with processing and transmitting of Passive Acoustic Monitoring (PAM) sensor data in real time, will revolutionise the way acoustic data are applied both scientifically and commercially. From oceanic ambient noise analysis, we are able to measure the sea surface wind speed and monitor storm events, to detect and classify whale sounds and fish choruses, to evaluate the anthropogenic contribution to the underwater soundscape.

These new abilities broaden the observation spectrum of the ocean gliders. From storm detection and wind speed measurement, we could quantify critically important air-sea fluxes. From marine mammal detection, we could follow a population, estimate its size, behaviour and location, and thus reduce harmful anthropogenic impacts and map cetacean behaviour patterns to oceanographic features of interest (blooms, krill swarms). We could provide a high-resolution soundscape of a region of interest, such as a marine protected area, or an offshore activities site, and monitor the activity and evolution of an ecosystem.

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