Admiralty Inlet Hub-Height Turbulence Measurements from June 2012


This data is from measurements at Admiralty Head, in Admiralty Inlet. The measurements were made using an IMU equipped ADV mounted on a mooring, the 'Tidal Turbulence Mooring' or 'TTM'. The inertial measurements from the IMU allows for removal of mooring motion in post processing. The mooring motion has been removed from the stream-wise and vertical velocity signals (u, w). The lateral (v) velocity may have some 'persistent motion contamination' due to mooring sway. The ADV was positioned 11m above the seafloor in 58m of water at 48.1515N, 122.6858W.

- Velocity data (_u, urot, uacc) is in m/s.
- Acceleration (Accel) data is in m/s^2.
- Angular rate (AngRt) data is in rad/s.
- The components of all vectors are in 'ENU' orientation. That is, the first index is True East, the second is True North, and the third is Up (vertical).
- All other quantities are in the units defined in the Nortek Manual.

Motion correction and rotation into the ENU earth reference frame was performed using the Python-based open source DOLfYN library (linked in resources). Details on motion correction can be found there.

For additional details on this dataset see the included Marine Energy Technology Symposium paper.

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Additional Info

DOE Project Name: Ocean Current, River and Tidal Hydrology for Inflow Modeling
DOE Project Number: FY12 AOP 1323
DOE Project Lead: Alison LaBonte
DOI: 10.15473/1245824
Last Updated: 3 days ago
Data from June, 2012
Submitted Sep 22, 2015


National Renewable Energy Laboratory



Publicly accessible License 


Levi Kilcher
National Renewable Energy Laboratory


MHK, Marine, Hydrokinetic, energy, power, water velocity, Admiralty Inlet, Puget Sound, Turbulence, python, code, resource, safety, effectiveness, ocean, TTM, IMU, field test, DOLfYN, Tidal Turbulence Mooring, Acoustic Doppler Velocimeter, Acoustic Doppler Current Profiler, Nortek Vector, ADV, ADCP, Acoustic Wave And Current Profiler, AWAC, Admiralty Head, WA, Washington, USA, inertial measurement unit, mooring, velocity, velocimetry, stream-wise, vertical, lateral, raw data, processed data, Matlab


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