Wave observations from bottom-mounted pressure sensors along the West side of Whidbey Island, Washington from Dec 2018 to Jan 2020

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently anticipated questions:

What does this data set describe?

Title:
Wave observations from bottom-mounted pressure sensors along the West side of Whidbey Island, Washington from Dec 2018 to Jan 2020
Abstract:
RBRduo pressure and temperature sensors mounted on aluminum frames, were moored in shallow (4-9 m) water depths along the West side of Whidbey Island, Washington, to measure wave heights and periods. Continuous pressure fluctuations were transformed into surface-wave observations of wave heights, periods, and frequency spectra at 30-minute intervals.
Supplemental_Information:
Information about the data collection field activities can be found at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-706-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Grossman, Eric E., and Crosby, Sean C., 20240213, Wave observations from bottom-mounted pressure sensors along the West side of Whidbey Island, Washington from Dec 2018 to Jan 2020: data release DOI: 10.5066/P907B0YM, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Grossman, Eric E., and Crosby, Sean C., 2024, Wave observations from bottom-mounted pressure sensors along the West side of Whidbey Island, Washington from Dec 2018 to Jan 2020: data release DOI: 10.5066/P907B0YM, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

    Other_Citation_Details:
    Suggested Citation: Grossman, E.E. and Crosby, S.C., 2024, Wave observations from bottom-mounted pressure sensors along the West side of Whidbey Island, Washington from Dec 2018 to Jan 2020: U.S. Geological Survey data release, https://doi.org/10.5066/P907B0YM.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -122.772
    East_Bounding_Coordinate: -122.712
    North_Bounding_Coordinate: 48.318
    South_Bounding_Coordinate: 48.227
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 27-Nov-2017
    Ending_Date: 24-Jan-2018
    Currentness_Reference:
    ground condition when data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: NetCDF files
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected continuously along survey transects. Refer to self-contained NetCDF files for more location information.
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    NetCDF files are self-contained and attribute information may be found in the header of the file itself.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Eric E. Grossman
    • Sean C. Crosby
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

Wave observations were collected as part of the development of the USGS Puget Sound Coastal Storm Modeling System (PS-CoSMoS) across the Salish Sea. The wave data help support the validation of the PS-CoSMoS regional wave model for forecasting future extreme high-water levels and flood risk with projected sea-level rise and storms and to characterize the present-day wave climate.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 10-Feb-2020 (process 1 of 2)
    RBRduo pressure and temperature sensors (early 2015 generation) were deployed and recovered at 8 sites along the west Whidbey Island Washington State coast over 3 deployments between December 12, 2018, and February 10, 2020. Instruments were mounted to weighted frames with a 1-m footprint ~20-cm off of the seabed. The first deployment was located at sites W1 and W2 between December 12, 2018 and April 22, 2019. The second deployment was located at sites W3, W4, and W5 between April 22, 2019, and September 4, 2019. The third deployment was located at sites W6, W7 and W8 between September 4, 2019, and February 10, 2020. The sensor at site W6 was not found. W1-8 locations are found the metadata of the netCDF data files. Mushroom and fluke anchors were attached to frames with chain. Twelve-inch surface floats were attached to anchors for recovery and were not expected to impact instrument recording. Pressure and temperature were recorded continuously. W3, W4, and W5 used a 2Hz sampling frequency while other sites used at 4Hz sampling frequency. During deployment and recovery, depth was sampled with a handheld sonar, and position was recorded with a handheld GPS.
    Date: 12-Feb-2020 (process 2 of 2)
    Samples were downloaded from the sensors using the manufacturers' software, Ruskin v2.4 and processed using the xarray Python package. Data quality assurance and quality control was performed by inspecting all variables and removing spurious values either out of water or of suspected instrument malfunction. Data flagged are available in the netCDF metadata. All times are in Coordinated Universal Time (UTC). Files are named using the convention W#b_cal.nc or W#s_a.nc, where W stands for Whidbey Island, # is the site number and “b_cal” is the file-type for wave-burst data while “s_a” is the filetype for bulk wave statistics data averaged over 30-minute intervals.
  3. What similar or related data should the user be aware of?
    Crosby, Sean C., Nederhoff, Kees, Vanarendonk, Nathan R., and Grossman, Eric E., 2023, Efficient modeling of wave generation and propagation in a semi-enclosed estuary.

    Online Links:

    Other_Citation_Details:
    Crosby, S.C., Nederhoff, C.M., VanArendonk, N., and Grossman, E.E., 2023, Efficient modeling of wave generation and propagation in a semi-enclosed estuary: Journal of Ocean Modelling, https://doi.org/10.1016/j.ocemod.2023.102231.

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted.
  2. How accurate are the geographic locations?
    The stated accuracy of the hand-held GPS unit used to determine instrument position ranged from 3-5 m.
  3. How accurate are the heights or depths?
    The stated accuracy of the RBRDuo pressure sensor is 0.05% of the full scale.
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the metadata for each part of this data release carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    Data fall within expected ranges.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints none
Use_Constraints USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - CMGDS
    2885 Mission Street
    Santa Cruz, CA
    USA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable data are in NetCDF format containing continuous temperature and pressure observations recorded by each instrument (W#b-cal.nc) and wave statistics conditions averaged over each 30-min interval (W#s-a.nc) for each site (#). All metadata in NetCDF files is in CF-1.6 compliant format.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Time-series data in netCDF format following Climate and Forecast (CF) Metadata Conventions version 1.8. File download sizes range from 3.6 MB to 574.0 MB in format NetCDF (version 4.7) Size: 3002
      Network links: https://doi.org/10.5066/P907B0YM
    • Cost to order the data: None.

  5. What hardware or software do I need in order to use the data set?
    These data can be viewed with any software capable of reading netCDF files.

Who wrote the metadata?

Dates:
Last modified: 13-Feb-2024
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P907B0YM/Whidbey_WaveStatistics_metadata.faq.html>
Generated by mp version 2.9.51 on Wed Aug 14 16:12:48 2024