First live u/w sound transmission from Antarctica
Last updated: October 4, 2017 at 17:05 pm
December 2005 – Perennial Acoustic Observatory (PALAOA, Hawaiian word for “whale”), located on the Ekström ice shelf, Antarctica. Four hydrophones, operated by the Alfred Wegener Institute for Polar and Marine Research (AWI), almost continuously recorded underwater sounds below the ice shelf, including Weddell seals, crabeater seals, Ross seals, leopard seals, orcas (killer whales), blue whales, fin whales and minke whales. The hydrophones were located at the end of boreholes in 100-m thick floating ice. A compressed data stream was transmitted in real time via wireless LAN from PALAOA to the German Neumayer Base at 15 km distance. A satellite link then transmitted the stream to Germany.