The VLAD Buoy and Ambient Noise Ambient Noise

The VLAD Buoy and Ambient Noise • • • Ambient Noise in the Ocean Characteristics of Merchant Noise VLAD Basics Approaching the Data Lessons Learned…the hard way.

Arverson and Vendittis: Modern Ship Noise (J. Accoust Soc Am)

Pulled from the VLAD 77 Series Technical Manual

VLAD Acoustic Uplink Data Map

20 July 2006 Buoy drops and Wind Speed (m/s) Buoy B: IVO Hoe Trapeze 02: 55 Z, ubar = 2. 5 m/s Buoy C: IVO Azalea Galaxy 15: 18 Z, ubar = 0. 8 m/s

22 July 2006 Buoy drops and Wind Speed (m/s) Buoy G: IVO Theotokos 19: 07 Z, ubar = 8. 6 m/s Buoy J: IVO Theotokos 02: 55 Z, ubar = 7. 5 m/s

Buoy B: IVO Hoe Trapeze - Rng: Spd: 16 kts, 149 T (SE) RV Point Sur – 12 nm, 10 kts, 239 T (WSW)

Buoy B: IVO Hoe Trapeze - Rng: Spd: 16 kts, 149 T (SE) RV Point Sur – 12 nm, 10 kts, 239 T (WSW) 197 Hz, 208 Hz, 214 Hz, 227 Hz, 300 Hz

Arverson and Vendittis: Modern Ship Noise (J. Accoust Soc Am)

Buoy B: IVO Hoe Trapeze - Rng: Spd: 16 kts, 149 T (SE) RV Point Sur – 12 nm, 10 kts, 239 T (WSW) O J AB F C D E G H 1 I L K N M Q P R T U S

Buoy C: IVO Azalea Galaxy - Spd: 16 kts, 153 T (SE) RV Point Sur – 11 nm, 10 kts, 064 T (NE)

Buoy C: IVO Azalea Galaxy - Spd: 16 kts, 153 T (SE) RV Point Sur – 11 nm, 10 kts, 064 T (NE) N J CD A B E F G H I K L M Fig 27 O

Buoy G: IVO Theotokos - Spd: 13 kts, 325 T (NW) RV Point Sur – 35. 7 nm, 8 kts, 200 T (SSW)

Buoy G: IVO Theotokos - Spd: 13 kts, 325 T (NW) RV Point Sur – 35. 7 nm, 8 kts, 200 T (SSW) Fig 84 A B C DE G F H I J K L

Buoy G: IVO Theotokos - Spd: 13 kts, 325 T (NW) RV Point Sur – 8. 4 nm, 8 kts, 200 T (SSW) Fig 1081 A B C D E F G H I J K L

Lessons Learned…the hard way • Research your topic before gathering data • Know you equipment…inside and out • You can never have “too much” metadata • Pay a professional if you have the cash!

Questions?

B C G J