Oceanographic time-series measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA from March 2014 to July 2015

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Frequently anticipated questions:

What does this data set describe?

Title:
Oceanographic time-series measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA from March 2014 to July 2015
Abstract:
Water level, flow velocity, temperature, salinity, and turbidity were measured in a breach constructed in a flood-protection levee surrounding a restored former agricultural area in Port Susan, Washington, USA, near the mouth of the Stillaguamish River. Data were collected in a breach known as PSB1 at 15-minute intervals from March 21, 2014 to July 1, 2015 using a SonTek Argonaut-SW current meter, an In-Situ Aqua TROLL 200 pressure, conductivity, and temperature sensor, and an FTS DTS-12 turbidity sensor.
Supplemental_Information:
Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2013-602-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-632-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-675-FA
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Nowacki, Daniel J., Grossman, Eric E., and Curran, Christopher A., 20200519, Oceanographic time-series measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA from March 2014 to July 2015: data release DOI:10.5066/P9RK8H7X, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Nowacki, Daniel J., Grossman, Eric E., and Curran, Christopher A., 2020, Oceanographic measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA from March 2014 to July 2015: data release DOI:10.5066/P9RK8H7X, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -122.374
    East_Bounding_Coordinate: -122.360
    North_Bounding_Coordinate: 48.211
    South_Bounding_Coordinate: 48.196
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 21-Mar-2014
    Ending_Date: 01-Jul-2015
    Currentness_Reference:
    ground condition at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: NetCDF
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
    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 degrees and decimal minutes. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.
      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988
      Altitude_Resolution: 0.01
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method:
      Explicit elevation coordinate included with horizontal coordinates
  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)
    • Daniel J. Nowacki
    • Eric E. Grossman
    • Christopher A. Curran
  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?

Observations were collected as part of the USGS Coastal Habitats in Puget Sound Project to characterize sediment fluxes in a recently restored agricultural area. An area of approximately 61 ha was reconnected to tidal flow via levee breaches. These data help assess the success of the restoration effort from a hydrodynamics and sediment-transport perspective.

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: 01-Jul-2015 (process 1 of 3)
    An instrument package was deployed on March 21, 2014 on the channel bottom within a breach of the former flood-protection levee of the restored agricultural area. The instruments, which included a SonTek Argonaut-SW, In-Situ Aqua TROLL 200, and FTS DTS-12, were mounted to a frame and cabled to a power source and data logger installed on the former levee crest. All parameters were measured at 15-minute intervals during the deployment, except for during periodic servicing trips. Recording ceased on July 1, 2015.
    Date: 01-Apr-2020 (process 2 of 3)
    Data downloaded from the instruments were ingested using the xarray Python package. Time zones were converted to UTC. Data quality assurance and quality control was performed by inspecting all variables and removing spurious values. Details of which portions of data were flagged and removed are available in the netCDF metadata. Periods of instrument burial or biofouling were the most common reasons for flagging and removing data. Attributes conforming to CF (Climate and Forecast) Conventions version 1.7 were added and the dataset was serialized to netCDF.
    Date: 19-Oct-2020 (process 3 of 3)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?

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

  1. How well have the observations been checked?
    The specified accuracy of the Argonaut-SW is ±1 percent of measured velocity or ±0.5 cm/s.
    The specified accuracy of the In-Situ Aqua TROLL 200 is (conductivity): ± 0.5 percent of reading + 1 μS/cm when reading less than 80,000 μS/cm, ± 1.0 percent of reading when reading above 80,000 μS/cm; (pressure): ±0.05 percent FS from -5 to 50 degrees C; (temperature): ±0.1 degrees C.
    The specified accuracy of the DTS-12 is ±2 percent of reading + 0.2 NTU (0-399 NTU) ±4 percent of reading (400-1,600 NTU)
  2. How accurate are the geographic locations?
    A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
  3. How accurate are the heights or depths?
    A formal accuracy assessment of the vertical positional information in the data set has not been conducted.
  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 rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted.

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 - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable time-series data in netCDF format for the full deployment.
  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?
  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: 19-Oct-2020
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/ScienceBase/DR_P9RK8H7X/PSB_ts_metadata.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:17:26 2021