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Measuring Boat Wakes in Sydney Harbour Using Sentinel V ADCP ADCPs In Action in Australia 2015 Alex Le Royer
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 HASKONING AUSTRALIA Maritime & Waterways specialists Combines Patterson Britton heritage with Royal HaskoningDHV Currently 50 staff (having grown from 12 staff in 2012) 4 office location (Sydney, Newcastle, Gold Coast and Perth). Royal HaskoningDHV (Australia) Rivers and Water Management Maritime Structures MetoceanMonitoringModellingCoastal Planning, Strategy and Environment
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Metocean Monitoring Data for key variables to promote process understanding Variables are defined by project risks and environmental impacts Requirements of other project streams (e.g. design, environmental etc) to ensure data is fit for purpose
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Metocean Monitoring Instrumentation (e.g. TRDI ADCP’s, Datawell WRB’s, WetLabs, AWAC’s, SBE, meteorological stations, echo sounders etc.) Field experienced - vessels, moorings, deployments Data analysis and interpretation
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Barangaroo Ferry Hub Project Introduction to Haskoning Australia and Royal HaskoningDHV
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Barangaroo Site Within Sydney Harbour, Barangaroo is sheltered from ocean swell and seas. Busy waterway: Sydney Ferries - 90 services per day with up to 8 ferry services per hour. Many chartered cruise operators and recreational boating.
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Barangaroo Wave Climate – Conceptual Model Conceptual Understanding Monitoring Design Wave mechanisms: Wind waves Vessel wakes Wave reflections (‘wobble’ effect) All short period
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Summary of Field Work Client requested 12-months of wave data. Water depth is 12 m. Sent V 20 selected for vertical beam to provide surface elevation (eta) time series. ParameterSetting Wave measurement interval 30 minutes Sampling rate2 Hz Burst duration8.5 min (1024 samples)
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Data analysis work flow Sent V Raw Data (.pd0) Velocity (Beta Version) Extract Surface Track from Vertical Beam MATLAB Remove anomalies and detrend Compute wave parameters - time based (zero-crossing) - spectral Time of Day Analysis Compute wavelet coefficients and plot scalogram Plot interesting ensembles
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Eta Time Series
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Sydney Ferries Time Table
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Time of Day Analysis H max T mean Time of Day First ferryLast ferry
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Wind Waves – Night Time
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Boat Wakes – Night Time
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Boat Wakes – Day Time
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AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Barangaroo Wave Climate StatisticH max (m)T mean (sec) 20%ile0.062.1 Average0.172.3 90%ile0.302.6 95%ile0.342.9 Max H max and associated T mean 0.732.6 Wave direction is highly variable and from all directions (0 to 360˚)
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