Investigation of the Application of Standard Soil Mechanics Techniques and Principles to Bay Sediments (SUBSOME)

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Frequently-anticipated questions:

What does this data set describe?

Title:
Investigation of the Application of Standard Soil Mechanics Techniques and Principles to Bay Sediments (SUBSOME)
Abstract:
In recent years considerable interest has been shown in the engineering properties of submarine sediments. To date, studies of these properties have primarily been based on procedures and techniques used in the field of soil mechanics for foundation investigations on land. This study was undertaken to investigate the feasibility of using these soil mechanics procedures in conjunction with submarine sediments. Bottom samples were collected from St. Andrew Bay, Florida and analyzed for the mass physical properties using standard soil mechanics procedures. The influence of sampling, using oceanographic techniques, on the engineering properties is considered. Predictions as to the penetration of various shaped cement blocks, based on standard bearing capacity formulae using the data derived from the laboratory tests, were made. These predictions were then compared with actual measurements made on the blocks after they were placed on the bay floor. The problem of core shortening and the accuracy of predictions based on these formulae are discussed.”
  1. How should this data set be cited?

    U.S. Naval Oceanographic Office (NavOceanO), and Keller, George, 1964, Investigation of the Application of Standard Soil Mechanics Techniques and Principles to Bay Sediments (SUBSOME): Informal Manuscript Report IMR 0-4-64, U.S. Naval Oceanographic Office, Washington D.C. 20390.

    Online Links:

    Other_Citation_Details: Marine Science Department

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -85.7367
    East_Bounding_Coordinate: -85.7075
    North_Bounding_Coordinate: 30.1742
    South_Bounding_Coordinate: 30.1512

  3. What does it look like?

    MGG09005001.jpg (jpg)
    Screen grab view of locations with coastline for reference

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

    Beginning_Date: 19630409
    Ending_Date: 19630410
    Currentness_Reference: Publication date

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

    Geospatial_Data_Presentation_Form: Digital and 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 (6)

    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 0.0003. Longitudes are given to the nearest 0.0003. Latitude and longitude values are specified in Decimal degrees.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Data provided digitally include sampler and granulometric analyses in one-phi increments.
    Entity_and_Attribute_Detail_Citation: Source report

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?

    For inclusion into usSEABED: digitization and formatting: Tara Kneeshaw and April Villagomez (USGS); Corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)

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

    National Geophysical Data Center (NGDC)
    c/o Robin R. Warnken
    E/GC3 325 Broadway
    Boulder, CO 80305-3328

    303-497-6338 (voice)
    Robin.R.Warnken@noaa.gov

Why was the data set created?

…A study was undertaken to determine the validity of applying standard soil mechanics techniques and principles to soft submarine sediments. The purpose of this investigation was as follows: To collect sediment cores from a bay, make the necessary engineering tests, calculate the sediment bearing capacity, predict the amount of sinking of various shaped concrete blocks into the sediment, observe the actual penetration of the blocks, and relate the observed penetration values to the predicted values. These data then would serve to indicate if a problem existed and, hopefully, what modifications might be applied to the present principles in order to more accurately determine the engineering properties of submarine sediments.”

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: 1963 (process 1 of 1)
    No process information given in report.

    Person who carried out this activity:

    U.S. Naval Oceanographic Office
    Washington, D.C. 20390

    Unknown (voice)

    Data sources produced in this process:
    • IMR 0-4-64

  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?

    Statistical data was digitized by hand (typed in) at NGDC. For usSEABED, digital data and the scanned report were downloaded via the web, visually compared to source and corrected. Additional data may have been included from the scanned report, also available online. Where appropriate, data were tested for completeness using MS Excel.

  2. How accurate are the geographic locations?

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

  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?

    All available textural, statistical, and compositional information are included in usSEABED. The Holmes (USGS) compilation may also include metal and organic contaminant values requested by or performed by the EPA, USGS, USACE, and others for these samples that are not included in usSEABED.

  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: None
Use_Constraints:
Cite U.S. Naval Oceanographic Office and NGDC as originators of the data

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

    National Geophysical Data Center (NGDC)
    c/o Robin R. Warnken
    E/GC3 325 Broadway
    Boulder, CO 80305-3328

    303-497-6338 (voice)
    Robin.R.Warnken@noaa.gov

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

    MGGID 09005001

  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, limitations of the statistical data, and digitizing errors.

  4. How can I download or order the data?

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

    web browser and internet access preferred

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 2.8.24 on Mon Mar 27 19:55:12 2006