Admiralty Inlet Advanced Turbulence Measurements: June 2014

This data is from measurements at Admiralty Head, in Admiralty Inlet (Puget Sound) in June of 2014. The measurements were made using Inertial Motion Unit (IMU) equipped ADVs mounted on Tidal Turbulence Mooring's (TTMs). The TTM positions the ADV head above the seafloor to make mid-depth turbulence measurements. 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 has some 'persistent motion contamination' due to mooring sway.

Each ttm was deployed with two ADVs. The 'top' ADV head was positioned 0.5m above the 'bottom' ADV head. The TTMs were placed in 58m of water. The position of the TTMs were:

ttm01 : (48.1525, -122.6867) ttm01b : (48.15256666, -122.68678333) ttm02b : (48.152783333, -122.686316666)

Deployments TTM01b and TTM02b occurred simultaneously and were spaced approximately 50m apart in the cross-stream direction.

Units

  • 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 (http://lkilcher.github.io/dolfyn/). Details on motion correction can be found there.

Additional details on TTM measurements at this site can be found in the included Marine Energy Technology Symposium paper.

Data and Resources

Field Value
DOI 10.15473/1245825
accessLevel public
bureauCode {019:20}
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dataQuality true
identifier https://data.openei.org/submissions/3901
issued 2014-06-30T06:00:00Z
landingPage https://mhkdr.openei.org/submissions/50
license https://creativecommons.org/licenses/by/4.0/
modified 2020-07-30T18:56:58Z
old-spatial {"type":"Polygon","coordinates":[[[-122.6868,48.1515],[-122.6858,48.1515],[-122.6858,48.1527833],[-122.6868,48.1527833],[-122.6868,48.1515]]]}
programCode {019:010,019:009}
projectLead Alison LaBonte
projectNumber FY14 AOP 1321
projectTitle Advanced Turbulence Measurement Techniques for Current Device Field Deployments Collab with UW
publisher National Renewable Energy Laboratory
resource-type Dataset
source_datajson_identifier true
source_hash 0ab7debba97f47aa5cdb88fdad61a3ea2faa80a7
source_schema_version 1.1
spatial {"type":"Polygon","coordinates":[[[-122.6868,48.1515],[-122.6858,48.1515],[-122.6858,48.1527833],[-122.6868,48.1527833],[-122.6868,48.1515]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • acceleration
  • admiralty-inlet
  • adv
  • amerigeo
  • amerigeoss
  • angular-rate
  • buoy
  • ckan
  • code
  • data
  • deepwater-buoyancy
  • dolfyn
  • effectiveness
  • energy
  • field-test
  • geo
  • geoss
  • hydrokinetic
  • imu
  • marine
  • matlab
  • measurement
  • mhk
  • national
  • nortek-vector
  • north-america
  • nrel
  • pnnl
  • power
  • pre-processed
  • processed-data
  • puget-sound
  • python
  • raw-data
  • resource
  • safety
  • tidal-turbulence-mooring
  • ttm
  • turbulence
  • united-states
  • university-of-washington
  • vec
  • vector-files
  • water-velocity
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Levi Kilcher
maintainer_email levi.kilcher@nrel.gov
metadata_created 2025-11-20T02:27:35.900420
metadata_modified 2025-11-20T02:27:35.900424
notes This data is from measurements at Admiralty Head, in Admiralty Inlet (Puget Sound) in June of 2014. The measurements were made using Inertial Motion Unit (IMU) equipped ADVs mounted on Tidal Turbulence Mooring's (TTMs). The TTM positions the ADV head above the seafloor to make mid-depth turbulence measurements. 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 has some 'persistent motion contamination' due to mooring sway. Each ttm was deployed with two ADVs. The 'top' ADV head was positioned 0.5m above the 'bottom' ADV head. The TTMs were placed in 58m of water. The position of the TTMs were: ttm01 : (48.1525, -122.6867) ttm01b : (48.15256666, -122.68678333) ttm02b : (48.152783333, -122.686316666) Deployments TTM01b and TTM02b occurred simultaneously and were spaced approximately 50m apart in the cross-stream direction. Units ----- - 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 (http://lkilcher.github.io/dolfyn/). Details on motion correction can be found there. Additional details on TTM measurements at this site can be found in the included Marine Energy Technology Symposium paper.
num_resources 26
num_tags 44
title Admiralty Inlet Advanced Turbulence Measurements: June 2014