SAVARD66: Sediments of Block Island Sound

Metadata also available as: OUTLINE - TEXT

Frequently-anticipated questions:

What does this data set describe?
    Title: SAVARD66: Sediments of Block Island Sound
    Abstract:
    A total of 84 surficial sediments samples were collected aboard two cruises from Block Island Sound as part of a Master's Thesis completed at the University of Rhode Island. Sampling was performed with a pipe dredge for most of the samples; a van veen grab was used for the remaining samples. The data presented in this source show the sediments distribution and elucidate the sedimentary environments and processes on this portion of the continental shelf.

  1. How should this data set be cited?

    Poppe, Lawrence J. , 2003, SAVARD66: Sediments of Block Island Sound:, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Paskevich, V.F., Williams, S.J., Hastings, M.E., Kelley, J.T., Belknap, D.F., Ward, L.G., FitzGerald, D.M., and Larsen, P.F., 2003, Surficial Sediment Data from the Gulf of Maine, Georges Bank, and vicinity: a GIS Compilation: Open-File Report 03-001, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    Data are released via CD-ROM media. This digital publication may also be available via the web at pubs.usgs.gov

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -72.073000
    East_Bounding_Coordinate: -71.582000
    North_Bounding_Coordinate: 41.327000
    South_Bounding_Coordinate: 41.078000

  3. What does it look like?

    savard66 (GIF)
    Image map showing extent and distribution of data layer coverage.

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

    Calendar_Date: 1966
    Currentness_Reference: publication date

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

    Geospatial_Data_Presentation_Form: vector digital data

  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):

      • Entity point (84)

    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 0.001. Longitudes are given to the nearest 0.001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    savard66.dbf
    Shapefile Attribute Table (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    CONSEC_NO
    Station numbers assigned during each of the two cruises. Some numbers therefore repeat. (Source: Scientist)

    Range of values
    Minimum:1
    Maximum:76
    Units:station
    Resolution:1

    PROJECTID
    Name assigned to the data set for future identification (Source: Compiler)

    ValueDefinition
    SAVARD66Scientist and year of publication

    CRUISEID
    Name used to distinguish between cruises (Source: Scientist)

    Abbreviation of ship name and the leg during which samples were collected.

    STATION
    Unique numbers assigned to each sampling site. (Source: Scientist)

    Range of values
    Minimum:1
    Maximum:84
    Units:station
    Resolution:1

    DEVICE
    Sampler used to collect sediment. Pipe dredge for some stations; van veen grab for others. (Source: Scientist)

    Character string of width 13.

    DATE
    Year, month and day when samples were collected. (Source: Scientist)

    Year, month, and day (YYYYMMDD) when samples were collected.

    LATITUDE
    Latitude coordinate of sample locations (Source: Scientist)

    Range of values
    Minimum:41.078
    Maximum:41.327
    Units:Decimal Degrees
    Resolution:0.001

    LONGITUDE
    Longitude coordinate of sample stations (Source: Scientist)

    Range of values
    Minimum:-72.073
    Maximum:-71.582
    Units:Decimal Degrees
    Resolution:0.001

    DEPTH
    Water depth at the stations (Source: Scientist)

    Range of values
    Minimum:14
    Maximum:91
    Units:meters
    Resolution:1

    DOMINANT_L
    Prevalent textural class (Source: Scientist)

    Sediment descriptions

    SECOND_LIT
    Minor textural sediment component (Source: Scientist)

    Sediment descriptions

    GRAVEL
    Percentage of gravel in a sample (Source: Scientist)

    Range of values
    Minimum:0
    Maximum:97
    Units:percent
    Resolution:1

    SAND
    Percentage of sand in a sample (Source: Scientist)

    Range of values
    Minimum:3
    Maximum:100
    Units:percent
    Resolution:1

    SILT
    Percentage of silt in a sample (Source: Scientist)

    Range of values
    Minimum:0
    Maximum:55
    Units:percent
    Resolution:1

    CLAY
    Percentage of clay in a sample (Source: Scientist)

    Range of values
    Minimum:0
    Maximum:7
    Units:percent
    Resolution:1

    SHEPARD_CL
    Sediment classification according to a scheme devised by Shepard (1954) (Source: Scientist)

    Sediment descriptions

    Entity_and_Attribute_Overview:
    Grain-size data, sediment textural descriptions navigation, and sample identifiers for the data published by Savard (1966).

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?

    Please view the cross reference information for the original data set credit to Savard (1966). Larry Poppe for entering the data from the source report and creating the ArcView shapefile.

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

    Lawrece J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

Why was the data set created?
The purpose of this data layer is to release a digital version of the data published in Savard (1966).

How was the data set created?
  1. From what previous works were the data drawn?

    (source 1 of 1)
    Savard, W.L., 1966, The Sediments of Block Island Sound: Master's Thesis 68 p., University of Rhode Island, Kingston, RI.

    Type_of_Source_Media: paper

  2. How were the data generated, processed, and modified?

    Date: 11-Sep-2002 (process 1 of 1)
    The source information was manually entered into digital form and was imported from an ASCII text file to an ArcView table. The table was later converted to an event theme and saved as the final shapefile.

    Person who carried out this activity:

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

    Data sources used in this process:
    • savard66.txt

    Data sources produced in this process:

    • savard66.shp
    • savard66.dbf
    • savard66.shx

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    All attributes were entered and checked by the compilers in a consistent manner.

  2. How accurate are the geographic locations?

    Navigation was performed using Loran A. Navigational accuracy is unknown.

  3. How accurate are the heights or depths?

    Tides are less than 2 m.

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

    Sample locations, textural descriptions, grain-size data, and identifiers are provided for 84 samples.

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

    No additional checks for topological consistency were performed on this data.

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: None

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

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov

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

    Regional Mapping of Surficial Sediments: Gulf of Maine and Georges Bank, Aggregates and Habitats Projects, savard66.shp

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

  4. How can I download or order the data?

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

    The data is available in ArcView shapefile format. The user must have ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView, the user may utilize another GIS application package capable of importing data.

Who wrote the metadata?
Dates:
Last modified: 16-Feb-2003

Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

508-548-8700 x2314 (voice)
508-457-2310 (FAX)
lpoppe@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Generated by mp version 2.7.3 on Sun Feb 16 11:31:28 2003

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