The VLAD Buoy and Ambient Noise

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The VLAD Buoy and Ambient Noise

• Ambient Noise in the Ocean
• Characteristics of Merchant Noise
• VLAD Basics
• Approaching the Data
• Lessons Learnedthe hard way.

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Arverson and Vendittis Modern Ship Noise (J.
Accoust Soc Am)
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Pulled from the VLAD 77 Series Technical Manual
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VLAD Acoustic Uplink Data Map
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20 July 2006Buoy drops and Wind Speed (m/s)
Buoy B IVO Hoe Trapeze 0255 Z, ubar 2.5m/s
Buoy C IVO Azalea Galaxy 1518 Z, ubar 0.8m/s
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22 July 2006Buoy drops and Wind Speed (m/s)
Buoy G IVO Theotokos 1907 Z, ubar 8.6m/s
Buoy J IVO Theotokos 0255 Z, ubar 7.5m/s
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Buoy B IVO Hoe Trapeze - Rng Spd 16kts, 149T
(SE) RV Point Sur 12nm, 10kts, 239T (WSW)
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Buoy B IVO Hoe Trapeze - Rng Spd 16kts, 149T
(SE) RV Point Sur 12nm, 10kts, 239T (WSW)
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Buoy B IVO Hoe Trapeze - Rng Spd 16kts, 149T
(SE) RV Point Sur 12nm, 10kts, 239T (WSW)
197Hz, 208Hz, 214Hz, 227Hz, 300Hz
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Arverson and Vendittis Modern Ship Noise (J.
Accoust Soc Am)
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Arverson and Vendittis Modern Ship Noise (J.
Accoust Soc Am)
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Buoy B IVO Hoe Trapeze - Rng Spd 16kts, 149T
(SE) RV Point Sur 12nm, 10kts, 239T (WSW)
O
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R
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G
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Buoy C IVO Azalea Galaxy - Spd 16kts, 153T (SE)
RV Point Sur 11nm, 10kts, 064T (NE)
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Buoy C IVO Azalea Galaxy - Spd 16kts, 153T (SE)
RV Point Sur 11nm, 10kts, 064T (NE)
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Buoy C IVO Azalea Galaxy - Spd 16kts, 153T (SE)
RV Point Sur 11nm, 10kts, 064T (NE)
Fig 27
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B
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Buoy G IVO Theotokos - Spd 13kts, 325T (NW) RV
Point Sur 35.7nm, 8kts, 200T (SSW)
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Buoy G IVO Theotokos - Spd 13kts, 325T (NW) RV
Point Sur 35.7nm, 8kts, 200T (SSW)
Fig 84
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E
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B
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Buoy G IVO Theotokos - Spd 13kts, 325T (NW) RV
Point Sur 8.4nm, 8kts, 200T (SSW)
Fig 1081
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Lessons Learnedthe hard way

• Research your topic before gathering data
• Know you equipmentinside and out
• You can never have too much metadata
• Pay a professional if you have the cash!

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Questions?
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B
C
G
J
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