Bearing strength and other physical properities of some shallow and deep-sea sediments from the north Pacific

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Frequently-anticipated questions:

What does this data set describe?

Title:
Bearing strength and other physical properities of some shallow and deep-sea sediments from the north Pacific
Abstract:
"Measurements of wet density, porosity, grain size distribution, and shear strength were made from cores collected from a variety of environments in the north Pacific. Bearing strength of the sediments was calculated from shear strength measurements and is tabulated with the other properties. Short discussions of shear strength and bearing capacity explain the fundamentals of these parameters."
Supplemental_Information:
Data digitized by the USGS for inclusion into usSEABED (<http://walrus.wr.usgs.gov/usseabed>)
  1. How should this data set be cited?

    Moore, David G. , 1962, Bearing strength and other physical properities of some shallow and deep-sea sediments from the north Pacific: Geological Society of America Bulletin v. 73, p. 1163-1166, Geological Society of America, Boulder, CO.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -165.750
    East_Bounding_Coordinate: -117.233
    North_Bounding_Coordinate: 47.167
    South_Bounding_Coordinate: 3.700

  3. What does it look like?

    Moore_1962 (jpg)
    Screen grab view of locations with coastline for reference

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

    Calendar_Date: Unknown
    Currentness_Reference:
    Publication date. No information given in paper about dates of sample collection.

  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 (77)

    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)

    Water depth
    Sample water depth (Source: Source report)

    Range of values
    Minimum:13
    Maximum:5692
    Units:Meters
    Resolution:1

    Subsample depth
    Subsample depth (Source: Source report)

    Range of values
    Minimum:0
    Maximum:200
    Units:Centimeter
    Resolution:0.1

    Sediment type
    Sediment classification (Source: Shepard 1954)

    Sediment classification protocol by Shepard, 1954

    Mean
    Mean grainsize (Source: Source report)

    Range of values
    Minimum:0.0014
    Maximum:0.0769
    Units:Millimeters
    Resolution:0.0001

    Sand
    Amount of sand in sample (Source: Source report)

    Range of values
    Minimum:0.2
    Maximum:66.1
    Units:Percent
    Resolution:0.1

    Silt
    Amount of silt in sample (Source: Source report)

    Range of values
    Minimum:17.0
    Maximum:83.8
    Units:Percent
    Resolution:0.1

    Clay
    Amount of clay in sample (Source: Source report)

    Range of values
    Minimum:3.1
    Maximum:86
    Units:Percent
    Resolution:0.0001

    Wet density
    Density of sample when wet (Source: Source report)

    Range of values
    Minimum:1.14
    Maximum:2.00
    Units:Gm/cm3
    Resolution:0.01

    Porosity
    Sample porosity (Source: Source report)

    Range of values
    Minimum:42
    Maximum:85.6
    Units:0/00
    Resolution:0.0001

    Direct shear
    Sample direct shear strength (Source: Source report)

    Range of values
    Minimum:0
    Maximum:54
    Units:Phi degree
    Resolution:1

    Direct shear
    Sample direct shear strength (Source: Source report)

    Range of values
    Minimum:10.18
    Maximum:36.90
    Units:C gm/cm2
    Resolution:0.01

    Direct shear
    Sample direct shear strength (Source: Source report)

    Range of values
    Minimum:0.145
    Maximum:0.526
    Units:C psi
    Resolution:0.001

    Vane shear strength
    Sample vane shear strength (Source: Source report)

    Range of values
    Minimum:3.15
    Maximum:101.90
    Units:Gm/cm3
    Resolution:0.01

    Vane shear strength
    Sample vane shear strength (Source: Source report)

    Range of values
    Minimum:0.045
    Maximum:1.450
    Units:Psi
    Resolution:0.001

    Sensitivity
    Sample sensitivity (Source: Source report)

    Range of values
    Minimum:1.62
    Maximum:30
    Units:Unitless
    Resolution:0.01

    Bearing capacity
    Sample bearing capacity (Source: Source report)

    Range of values
    Minimum:0.358
    Maximum:1.893
    Units:Phi
    Resolution:0.001

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?

    David G. Moore at the Geological Society of America for the collection and analysis of data. For inclusion into usSEABED: Digitization: Jennifer Mendonca (USGS); Corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)

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

    U.S. Navy Electronics Laboratory
    Unknown location
    San Diego, CA Unknown

    Unknown (voice)

Why was the data set created?

"The increasing interest in the sea floor as an operational environment has created a demand for data on the capacity of sea-floor sediments to support applied loads. Because very little work has been done on the bearing strength properities of marine sediments, all available data are of interest to those involved in placing equipment on the sea floor."

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)
    No information on data techniques or sample protocols is given in the paper.

    Person who carried out this activity:

    U.S. Navy Electronics Laboratory
    Unknown location
    San Diego, CA Unknown

    Unknown (voice)

    Data sources produced in this process:
    • Moore_1962

  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?

    Latitude and longitude are given to the nearest minute-tenth. No navigational information is noted in the paper.

  3. How accurate are the heights or depths?

    Water depths are given to the nearest meter; downcore information is given to the nearest millimeter.

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

    Data not digitized include direct shear strength, vane shear strength, sensitivity, and bearing capacity.

  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: Paper is available at the USGS library and other libraries
Use_Constraints:
Cite David E. Moore and the U.S. Navy Electronics Laboratory, San Diego, CA as the originators of these data

  1. Who distributes the data set? (Distributor 1 of 2)

    U.S. Geological Survey
    345 Middlefield Road
    Menlo Park, CA 94025

    650-329-5026 (voice)
    men_lib@usgs.gov

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

    GSA Bulletin v. 73 p 1163-1166

  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?

  1. Who distributes the data set? (Distributor 2 of 2)

    Geological Society of America
    P.O. Box 9140
    Boulder, CO 80301-9140

    303 447 2020 (voice)

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

    Geological Society of America Bulletin v. 73 p. 1163-1166

  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 22:05:42 2006