Glacier Bay National Park Raw Audio Data

Glacier Bay National Park is conducting underwater passive acoustic monitoring to characterize the underwater sound environment including weather generated sounds, biologics, and vessel noise, for the purpose of basic science as well as management applications. The data are collected using a calibrated ITC type 8215A broadband omnidirectional hydrophone with a nominal sensitivity -174 dB re 1 volt per 1 micropascal (Gavial ITC Inc., Santa Barbara, CA, USA) mounted on an anchoring tripod 1 m above the seafloor (30.2 m depth). A 5-mile cable runs from the hydrophone back to a computer at Park headquarters where automated samples are collected and real-time audio is broadcast on a speaker.