2021 Cook Inlet Tidal Energy Resource Characterization Bottom Lander Measurements

These datasets are from tidal resource characterization measurements collected on the Terrasond High Energy Oceanographic Mooring (THEOM) from 1 July 2021 to 30 August 2021 (60 days) in Cook Inlet, Alaska. The lander was deployed at 60.7207031 N, 151.4294998 W in ~50 m of water.

The dataset contains raw and processed data from the following two instruments:

  1. A Nortek Signature 500 kHz acoustic Doppler current profiler (ADCP). Data were recorded in 4 Hz in the beam coordinate system from all 5 beams. Processed data has been averaged into 5 minutes bins and converted to the East-North-Up (ENU) coordinate system.

  2. A Nortek Vector acoustic Doppler velocimeter (ADV). Data were recorded at 8 Hz in the beam coordinate system. Processed data has been averaged into 5 minutes bins and converted to the Streamwise - Cross-stream - Vertical (Principal) coordinate system. Turbulence statistics were calculated from 5-minute bins, with an FFT length equal to the bin length, and saved in the processed dataset.

Data was read and analyzed using the DOLfYN (version 1.0.2) python package and saved in MATLAB (.mat) and netCDF (.nc) file formats. Files containing analyzed data (".b1") were standardized using the TSDAT (version 0.4.2) python package. NetCDF files can be opened using DOLfYN (e.g., dat = dolfyn.load(''*.nc")) or the xarray python package (e.g. `dat = xarray.open_dataset("*.nc").

All distances are in meters (e.g., depth, range, etc), and all velocities in m/s. See the DOLfYN documentation linked in the submission, and/or the Nortek documentation for additional details.

Data and Resources

Field Value
DOI 10.15473/1876584
accessLevel public
bureauCode {019:20}
catalog_@context https://openei.org/data.json
catalog_@id https://openei.org/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
dataQuality true
identifier https://data.openei.org/submissions/5747
issued 2021-07-01T06:00:00Z
landingPage https://mhkdr.openei.org/submissions/440
license https://creativecommons.org/licenses/by/4.0/
modified 2022-07-19T19:29:58Z
old-spatial {"type":"Polygon","coordinates":[[[-180,-83],[180,-83],[180,83],[-180,83],[-180,-83]]]}
programCode {019:010,019:009}
projectLead Heather Spence
projectNumber FY21 AOP 2.1.5.401
projectTitle Model Validation and Site Characterization for Early Deployment MHK Sites and Establishment of Wave Classification Scheme
publisher National Renewable Energy Laboratory
resource-type Dataset
source_datajson_identifier true
source_hash 59ad50dcc4e27f357a780afdb346fcf50a25d1d6
source_schema_version 1.1
spatial {"type":"Polygon","coordinates":[[[-180,-83],[180,-83],[180,83],[-180,83],[-180,-83]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • acoustic-doppler-current-profiler
  • acoustic-doppler-velocimeter
  • adcp
  • adv
  • alaska
  • amerigeo
  • amerigeoss
  • ckan
  • current
  • data
  • energy
  • frequency
  • geo
  • geoss
  • hydrokinetic
  • marine
  • matlab
  • measurements
  • mhk
  • mooring
  • national
  • nortek
  • north-america
  • power
  • processed-data
  • python
  • raw-data
  • resource
  • signature-500
  • tidal
  • united-states
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 2025-11-21T16:02:19.396852
metadata_modified 2025-11-21T16:02:19.396856
notes These datasets are from tidal resource characterization measurements collected on the Terrasond High Energy Oceanographic Mooring (THEOM) from 1 July 2021 to 30 August 2021 (60 days) in Cook Inlet, Alaska. The lander was deployed at 60.7207031 N, 151.4294998 W in ~50 m of water. The dataset contains raw and processed data from the following two instruments: 1. A Nortek Signature 500 kHz acoustic Doppler current profiler (ADCP). Data were recorded in 4 Hz in the beam coordinate system from all 5 beams. Processed data has been averaged into 5 minutes bins and converted to the East-North-Up (ENU) coordinate system. 2. A Nortek Vector acoustic Doppler velocimeter (ADV). Data were recorded at 8 Hz in the beam coordinate system. Processed data has been averaged into 5 minutes bins and converted to the Streamwise - Cross-stream - Vertical (Principal) coordinate system. Turbulence statistics were calculated from 5-minute bins, with an FFT length equal to the bin length, and saved in the processed dataset. Data was read and analyzed using the DOLfYN (version 1.0.2) python package and saved in MATLAB (.mat) and netCDF (.nc) file formats. Files containing analyzed data (".b1") were standardized using the TSDAT (version 0.4.2) python package. NetCDF files can be opened using DOLfYN (e.g., `dat = dolfyn.load(''*.nc")`) or the xarray python package (e.g. `dat = xarray.open_dataset("*.nc"). All distances are in meters (e.g., depth, range, etc), and all velocities in m/s. See the DOLfYN documentation linked in the submission, and/or the Nortek documentation for additional details.
num_resources 22
num_tags 31
title 2021 Cook Inlet Tidal Energy Resource Characterization Bottom Lander Measurements