Calling in a 40-knot storm

2011/09/26 in Acoustic analysis, Lime Kiln State Park, Network news, Orcasound lab, southern resident

It’s really piping today in Haro Strait. The plot (above) from the NOAA buoy at Hein Bank (south Haro Strait) suggests the killer whales have been traveling this morning through a sea swept by winds that are steady at 25-30 knots (nautical miles per hour) and gusting to 41! I’d surmised that it wasn’t worth listening to the nearby hydrophones for killer whale calls and clicks, but my gut was telling me otherwise. Besides, the Beam Reach students weren’t going to be able to bring their boat out in such wind for research anyway…

5-day plot - Wind Speed, Wind Gust and Atmospheric Pressure at 46088

5-day weather in Haro Strait (Hein Bank)

Sure enough, when I checked email at 14:30 there were many notifications from Val’s automatic detection software — both at Lime Kiln and then at Orcasound.  The spectrograms and links to the recordings are appended.  Does anyone recognize any of the calls?

The SRKW calls (including S2/3/4/19/42) were auto-detected at Lime Kiln  from 1255-1313 and then at Orcasound (5 km to the north) from 1319-1345.  During that period the tidal currents (predicted at Kellett Bluff, about 2 km north of Orcasound) went from starting to flood to near max flood (peak was at 1430).

Kellett bluff currents

Kellett bluff currents (from Jeff Dairiki)

115 Detections

2011-09-26 12:55:13

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2011-09-26 12:59:09

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2011-09-26 13:45:26

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