Single-beam bathymetry data collected in 2009 in the vicinity of Wainwright, Alaska

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

Frequently anticipated questions:

What does this data set describe?

Title:
Single-beam bathymetry data collected in 2009 in the vicinity of Wainwright, Alaska
Abstract:
Bathymetry data were collected in the Wainwright Inlet, the mouth of the Kuk River, and in the nearshore region off Wainwright, Alaska, in August of 2009. Bathymetry was measured with a single-beam echo-sounder (10 Hz 144 ODOM Echotrac CV-100) mounted on the stern of a small vessel and synchronized to a 145 Real-Time Kinematic (RTK) Global Positioning Systems (GPS). The depth is measured relative to approximate Mean Sea Level (see attribute accuracy report in this file for further details on the MSL), and depth values are meters below the water surface. The GPS sampling rate was 1 Hz with vehicle speeds maintained at less than 15 km/hour, resulting in a sample point resolution of 3-5 meters. Data are available in a single csv file.
Supplemental_Information:
Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=TM109AR 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?
    Erikson, Li H., Storlazzi, Curt D., Hatcher, Gerry A., Reiss, Thomas E., and Engelstad, Anita C., 20221217, Single-beam bathymetry data collected in 2009 in the vicinity of Wainwright, Alaska: data release DOI: 10.5066/P94V9W0S, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Erikson, Li H., Storlazzi, Curt D., Collins, Brian D., Hatcher, Gerry A., Reiss, Thomas E., and Engelstad, Anita C., 2022, Hydrographic and sediment field data collected in the vicinity of Wainwright, Alaska, in 2009: data release DOI: 10.5066/P94V9W0S, 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: -160.14601
    East_Bounding_Coordinate: -159.95314
    North_Bounding_Coordinate: 70.56534
    South_Bounding_Coordinate: 70.64741
  3. What does it look like?
    Bathymetry_Measurement_Locations.png (JPEG)
    Satellite image showing the areas where bathymetry data were collected
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 13-Aug-2009
    Ending_Date: 18-Aug-2009
    Currentness_Reference:
    ground condition at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-delimited text
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (53909)
    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 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is 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.
      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: approximately Mean Sea Level
      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?
    2009BathymetryData_.csv
    File containing geographic coordinates and bathymetry measurements (Source: Producer defined)
    Latitude(deg_WGS84)
    Latitude coordinate (Source: Producer defined)
    Range of values
    Minimum:70.56534
    Maximum:70.64741
    Units:Decimal degrees
    Resolution:0.00001
    Longitude(deg_WGS84)
    Longitude coordinate (Source: Producer defined)
    Range of values
    Minimum:-160.14601
    Maximum:-159.95314
    Units:Decimal degrees
    Resolution:0.00001
    Depth(m)
    Water depth at time of collection (Source: Producer defined)
    Range of values
    Minimum:1.04
    Maximum:17.61
    Units:meters
    Resolution:0.01
    Entity_and_Attribute_Overview: The first line of the csv file is a header line.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Li H. Erikson
    • Curt D. Storlazzi
    • Gerry A. Hatcher
    • Thomas E. Reiss
    • Anita C. Engelstad
  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?

Data were obtained to provide baseline information and to support the development of numerical models for assessing past and future coastal hazards. These data are intended for policy makers, resource managers, science researchers, students, and the general public. These data are not intended to be used for navigation.

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: 09-Oct-2009 (process 1 of 1)
    Single-beam bathymetry data were collected using a single-beam echo-sounder (10 Hz 144 ODOM Echotrac CV-100) mounted on the stern of a small vessel and synchronized to a 145 RTK/GPS. Data were processed using SonarWiz software and depths were extracted using automated bottom tracking methods. Depth values are given in meters below the water surface.
  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?
    There is no established vertical geodetic, nor tidal datum for much of Arctic Alaska, including where this study took place. A mean sea level elevation was estimated using data measured with the NortekTM pressure sensor (see 2009TimeSeriesData_WaterDepths*) and is considered a proxy for a local mean sea level datum in the study area. Reported bathymetry is relative to that datum. No formal accuracy assessment was performed.
  2. How accurate are the geographic locations?
    A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. The horizontal positioning errors are estimated to be plus/minus 0.1 m, based on system configuration, sea state (waves, local tides), vessel speed and the assumed speed of sound in water (1500 m/s).
  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. The vertical positioning errors are estimated to be plus/minus 0.15 m, based on system configuration, sea state (local tides, waves), vessel speed and the assumed speed of sound in water (1500 m/s).
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract.
  5. How consistent are the relationships among the observations, including topology?
    All 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

    831-427-4747 (voice)
    pcmsc_data@usgs.gov Resource_Description: These data are available in csv format
  2. What's the catalog number I need to order this data set?
  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: csv contains bathymetry data in format comma-delimited text Size: 1.3
      Network links: https://doi.org/10.5066/P94V9W0S
    • Cost to order the data: None.

  5. What hardware or software do I need in order to use the data set?
    The csv data can be viewed with any text reading software.

Who wrote the metadata?

Dates:
Last modified: 17-Dec-2022
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_P94V9W0S/2009BathymetryData_metadata.faq.html>
Generated by mp version 2.9.51 on Thu Dec 22 15:35:39 2022