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Monitoring underwater sound at the Seattle Aquarium

Monitoring underwater sound at the Seattle Aquarium. Research proposal discussion Wednesday, July 19, 2006 Scott Veirs | scott@beamreach.org | (206) 251-5554. Goals for this meeting+. Discuss logistics of deploying a hydrophone system at the Seattle Aquarium

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Monitoring underwater sound at the Seattle Aquarium

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  1. Monitoring underwater sound at the Seattle Aquarium Research proposal discussion Wednesday, July 19, 2006 Scott Veirs | scott@beamreach.org | (206) 251-5554

  2. Goals for this meeting+ • Discuss logistics of deploying a hydrophone system at the Seattle Aquarium • Continue considering potential educational benefits (and funding opportunities) • Monitor and study ambient noise and biological (endangered orca) sound

  3. Outline • Puget Sound hydrophone network overview • History, precedents, and progress • Proposed nodes and funding status • Research results to date • The proposed Aquarium node • Components and constraints • Installation and maintenance • Potential educational benefits • Listening/learning station (pier end, Great Hall)? • Puget Soundscape concept

  4. Building a hydrophone network in the Pacific Northwest

  5. Extant and proposed nodes in Haro Strait • Collaboration with Val Veirs • (Colorado College/Orcasound with TWM/SeaSound) • 4+ phones, ~30m offshore, ~10m depth • Calibrated to measure sound pressure levels • 5+ year lifetimes • 18+ months (4/04-11/05)results San Juan Island Orcasound Lime Kiln Haro Strait Victoria

  6. Other precedents(and potential nodes) • OrcaLab, Hanson Island, BC (Paul Spong) • Race Rocks, southern Vancouver Island, BC • Vashon Hydrophone project, west side Vashon Island (Ann Stateler and Joe Olson) • Buoyed systems for Humpbacks • Whalesong Project, Hawai’i • Jupiter Foundation, Hawai’I and Alaska

  7. Proposed new nodes in Puget Sound and funding status • Seattle Aquarium • Port Townsend Marine Science Center • $25,000 from NOAA for initial implementation • Exploring funding from WDFW • Prospecting for streaming sponsor

  8. Proven monitoring system • Monitors continuously • Detects and records automatically • Computes statistical summaries • Localizes sound sources Hydrophones: ITC-4066 Bandwidth: 100Hz – 15kHz Digitizing rate: 44,100 sec-1 Averaging time: 2 seconds Reporting interval: 30 minutes

  9. 24 hours of ambient sound in Haro Strait 24 hrs Seal? ?? Orcas Ferry

  10. Day Night dB date 120 120 120 1/11 100 100 100 1/12 1/13 8 am 8 pm 8 am Winter ambient soundJan 11 – Jan 13, 2005 ~ 20 Large Commercial Ships Pass Each Day

  11. Summer ambient sound Jul 03 – Jul 06, 2004 Day Night dB date 120 7/3 100 120 7/4 100 120 7/5 100 120 7/6 100 8 am 8 pm 8 am Recreational boats dominate during day Commercial ships dominate at night

  12. Monthly pattern of ambient noise June 2004 – November 2005

  13. Diurnal pattern of ambient noise Non-summer is October-April | Summer is July-August

  14. Conclusions about ambient noisein Haro Strait • Overall SPL: minimum~95dB; average ~115dB. • Typical maximum SPL~130dB; maximum~144. • Ships are dominant source during winters and during summer nights (raising average ~20dB above minimum). • Boats make significant contribution during summer days (raise average by ~2dB during summer afternoons)

  15. The proposed node at the Seattle Aquarium USGS

  16. Components and costs • 2 hydrophones, single cable (+ protectors) • PC (or laptop), power, Internet access • Diver for installation (1 hour) and annual maintenance

  17. Sighting and potential benefits

  18. Puget Soundscape concept Explore via link at http://beamreach.org/051/

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