Bottom sediment data from the continental shelf of Washington -- Grays Harbor to Cape Flattery

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Frequently-anticipated questions:

What does this data set describe?

Title:
Bottom sediment data from the continental shelf of Washington -- Grays Harbor to Cape Flattery
Abstract:
This report contains data from the granulometric analysis of bottom sediments from the continental shelf of Washington. The sediment samples were obtained on RV Oceaneer cruises in 1966 and 1967. Samples analyzed from Oceanner Cruise 5 were taken from laminations in vibratory cores. Multiple grab samples were taken from stations in Oceaneer Cruise 10 and Cruise 14. The analyses of approximately 618 samples are presented in this report.
Supplemental_Information:
This study has been part of a cooperative project by the Department of Oceanography and the Marine Geology Branch of the U.S. Geological Survey. Funds for the departmental personnel have been provided through Department of Interior Grant 14-08-001-10924. Data digitized by the USGS for inclusion into usSEABED (<http://walrus.wr.usgs.gov/usseabed>)
  1. How should this data set be cited?

    Burnett, Thomas L. , 1974, Bottom sediment data from the continental shelf of Washington -- Grays Harbor to Cape Flattery: Special Report No. 39, University of Washington, Seattle, WA.

    Other_Citation_Details:
    Department of Oceanography U.S. Geological Survey Grant 14-08-0001-10924 Reference: M68-28

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -124.872
    East_Bounding_Coordinate: -123.983
    North_Bounding_Coordinate: 48.233
    South_Bounding_Coordinate: 46.143

  3. What does it look like?

    SpecRep39 (JPG)
    Screen grab of GIS-produced sample distribution, with bathymetry and land for reference.

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 1966
    Ending_Date: 1967
    Currentness_Reference: Publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: Paper

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Point (547)

    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 0.00167. Longitudes are given to the nearest 0.00167. Latitude and longitude values are specified in Decimal degrees.

  7. How does the data set describe geographic features?

    Point
    SDTS point (Source: Source report)

    Sample number
    Sample number (Source: University of Washington)

    Alpha numeric number based on cruise and core information

    Water depth
    Water depth of sample (Source: Source report)

    Range of values
    Minimum:6
    Maximum:130
    Units:Meters
    Resolution:1.0

    Gravel
    Amount of gravel in sample (Source: Wentworth, 1938)

    Range of values
    Minimum:0
    Maximum:92.8
    Units:Percent
    Resolution:0.1

    Sand
    Amount of sand in sample (Source: Wentworth, 1938)

    Range of values
    Minimum:3.72
    Maximum:99.77
    Units:Percent
    Resolution:0.01

    Silt
    Amount of silt in sample (Source: Wentworth, 1938)

    Range of values
    Minimum:0
    Maximum:96.30
    Units:Percent
    Resolution:0.01

    Clay
    Amount of clay in sample (Source: Wentworth, 1938)

    Range of values
    Minimum:0
    Maximum:17.24
    Units:Percent
    Resolution:0.01

    Mean
    First moment (mean grain size) (Source: Unknown; without Shepard's corrections)

    Range of values
    Minimum:-3.12
    Maximum:9.17
    Units:Phi
    Resolution:0.01

    Standard deviation
    Second moment (standard deviation) of grain size (sorting) (Source: Unknown; without Shepard's corrections)

    Range of values
    Minimum:0.26
    Maximum:3.86
    Units:Phi
    Resolution:0.01

    Skewness
    Moment measure (third): skewness of grain size distribution (Source: Unknown; without Shepard's corrections)

    Range of values
    Minimum:-2.04
    Maximum:8.79
    Units:Unitless
    Resolution:0.01

    Kurtosis
    Moment measure (fourth): Kurtosis of grain size distibution (Source: Unknown; without Shepard's corrections)

    Range of values
    Minimum:1.042
    Maximum:93
    Units:Unitless
    Resolution:0.01

    Mean
    Graphic mean of grain size (Source: Folk and Ward, 1957)

    Range of values
    Minimum:-3.7
    Maximum:6.08
    Units:Phi
    Resolution:0.01

    Standard deviation
    Standard deviation of grain size distribution (sorting) (Source: Folk and Ward, 1957)

    Range of values
    Minimum:0.08
    Maximum:3.95
    Units:Phi
    Resolution:0.01

    Skewness
    Inclusive graphic skewness of grain size distibution (Source: Folk and Ward, 1957)

    Range of values
    Minimum:-0.83
    Maximum:0.84
    Units:Unitless
    Resolution:0.01

    Kurtosis
    Graphic kurtosis of grain size distribution (Source: Folk and Ward, 1957)

    Range of values
    Minimum:0.49
    Maximum:8.92
    Units:Unitless
    Resolution:0.01

    Mean
    Mean grain size (Source: Inman, 1952)

    Range of values
    Minimum:-1.88
    Maximum:6.91
    Units:Phi
    Resolution:0.01

    Standard deviation
    Standard deviation of grain size (Source: Inman, 1952)

    Range of values
    Minimum:0.01
    Maximum:4.54
    Units:Phi
    Resolution:0.01

    Skewness
    Graphic skewness (first) of grain size distribution (Source: Inman, 1952)

    Range of values
    Minimum:-0.87
    Maximum:0.92
    Units:Unitless
    Resolution:0.01

    Kurtosis
    Kurtosis of grain size distribution (Source: Inman, 1952)

    Range of values
    Minimum:0.08
    Maximum:5.65
    Units:Unitless
    Resolution:0.01

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Thomas L. Burnett at the University of Washington for the collection and analysis of data. For inclusion into usSEABED: digitization: Mark Zimmermann, (NMFS) and K. Halimeda Kilbourne, (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado).

  3. To whom should users address questions about the data?

    University of Washington
    P.O. Box 357940
    Seattle, WA 98195

    206-206-543-5060 (voice)

Why was the data set created?

No purpose given in report

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: Unknown (process 1 of 1)
    The samples were analyzed by the standard sieve and pipette method in the Oceanography Routine Sediment Laboratory at the University of Washington. Mr. Alan T. Ostenson and Mr. Thomas Andrus performed the analyses. The data were reduced by the computer program of Creager, McManus, and Collias (1962) and Collias et al., (1963). Miss Leilonie Gillespie was responsible for the data summary program. For usSEABED, data from Technical Report 57, Special Report 39, and Special Report 40 were concatenated together to reduce data overlaps and present data from the same samples together.

    Person who carried out this activity:

    University of Washington
    P.O. Box 357940
    Seattle, WA 98195

    206-543-5060 (voice)

    Data sources used in this process:
    • Collias et al., 1963
    • Creager, McManus and Collias, 1962

    Data sources produced in this process:

    • SpecRep39

  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?

    No estimate made for the accuracy of the data in the original report. Data digitized by the USGS and partners were visually compared to the source data, and corrected. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.

  2. How accurate are the geographic locations?

    Navigational techniques not recorded in report; latitudes and longitudes given in degrees, tenths, minutes.

  3. How accurate are the heights or depths?

    Water depth determination technique not noted in report. Water depths given in meters.

  4. Where are the gaps in the data? What is missing?

    Data digitized for inclusion in usSEABED include granulometric analyses, moment measures, Folk statistics, Inman statistics, and grain size fractions. Not digitized are Trask statistics, and quartile values.

  5. How consistent are the relationships among the observations, including topology?

    Data fall within normal ranges for the given parameters.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
Report is available at libraries and the University of Washington
Use_Constraints:
Cite Thomas L. Burnett and the University of Washington as originators of the data.

  1. Who distributes the data set? (Distributor 1 of 1)

    University of Washington
    P.O. Box 357940
    Seattle, WA 98195

    206-543-5060 (voice)

  2. What's the catalog number I need to order this data set?

    Department of Oceanography Special Report 39

  3. What legal disclaimers am I supposed to read?

    Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies and limitations of the statistical data.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    None

Who wrote the metadata?

Dates:
Last modified: 2005
Metadata author:
U.S. Geological Survey
c/o Jane A. Reid
Geologist
400 Natural Bridges Drive
Santa Cruz, CA 95060

831-427-4727 (voice)
jareid@usgs.gov

Contact_Instructions: Email preferred
Metadata standard:
CSDGM Version 2 (FGDC-STD-001-1998)

Generated by mp version 2.8.17 on Sat May 20 21:19:38 2006