Vanilla is a product of Lussumo:Documentation and Support.
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Providing an acoustic live stream of the Antarctic underwater soundscape is a formidable challange. After all, more than 15000 km lie between Antarctica and our institute in Germany. Underwater sound is recorded by means of two hydrophones by PALAOA, an autonomous, wind and solar powered observatory located on the Ekström ice shelf (Boebel et al., 2006). The data stream is transmitted via wireless LAN from PALAOA to the German Neumayer Base. From there, a permanent satellite link transmits the data to the AWI in Germany. A constant hiss pervading the signal is the natural, isotropic background noise made audible here through the use of ultra sensitive hydrophones. Additional broad band noise caused by wind, waves and currents adds to it on occasion. Due to the limited bandwith of the satellite link, jamming of the WLAN link due to storms, or energy shortage, the connection might temporarily be down or scrammed. In this case, please dial in later!