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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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Presentation on theme: "Measuring Boat Wakes in Sydney Harbour Using Sentinel V ADCP ADCPs In Action in Australia 2015 Alex Le Royer."— Presentation transcript:

1 Measuring Boat Wakes in Sydney Harbour Using Sentinel V ADCP ADCPs In Action in Australia 2015 Alex Le Royer

2 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

3 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

4 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

5 AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Barangaroo Ferry Hub Project  Introduction to Haskoning Australia and Royal HaskoningDHV

6 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.

7 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

8 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)

9 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

10 AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Eta Time Series

11 AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Sydney Ferries Time Table

12 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

13 AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Wind Waves – Night Time

14 AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Boat Wakes – Night Time

15 AiAiA 2015 – Alex Le Royer Sydney Ferries Boat Wakes 13 May 2015 Boat Wakes – Day Time

16 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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