Lea Bouffaut

This schematic shows how the Distributed Acoustic Sensing, called DAS, works. Laser pulse is sent from the shore station through a fibre optic cable by an interrogator (a), which has evenly spaced nodes on it, called defects (b). Underwater sounds cause the defects in the fibre to be slightly displaced, which delays the backscatter a signal back to the interrogator, which then interprets the time delay as a strain on the fibre.
Note: Licensed photo(Graphic: Marte Finsmyr, Lea Bouffaut/Newsflash).

12 July 2022

WHALE MEET AGAIN: How Scientists Track Ocean Giants Thanks To The Water Wide Web

Marine scientists have revealed how they can track whale movement through the oceans using spare...