Acoustic Report from the Bering Sea

Jeff NystuenApplied Physics Lab

• Sound summaries from the PAL deployed at Site 2 during the summer of 2004

• Acoustic measurements of wind and rain• Detection of ships• Probable detection of marine mammals

Key for summary figures

• Top figure– Geophysical interpretation of sound

• Wind speed– black line – buoy wind

– Blue line – PAL wind

• Rainfall rate

Key for summary figures

• Bottom Figure - Sound levels at 2, 8 and 20 kHz- Detection of ships (red and orange)- Detection of rain (blue triangles)- Detection of peak between 300 Hz and 3 kHz

(Possible whale call (black triangle)

- Transient sounds detected (black x and +)