WIGLEY65: Fisheries Sediment Data

Metadata also available as: OUTLINE - TEXT

Frequently-anticipated questions:

What does this data set describe?
    Title: WIGLEY65: Fisheries Sediment Data
    Abstract:
    This is a part of the National Geophysical Data Center (NGDC) Seafloor Surficial Sediment (Deck 41) Data File. Deck 41 is an original data file created by the Marine Geology and Geophysics Group of NGDC from 1970-1975, abstracted from unpublished material contributed to NGDC by multiple groups of individuals. No updates of Deck 41 have been added since 1975. The data that comprise this portion of Deck 41 were generated by R.L. Wigley during 1965 aboard ALBATROSS IV cruises 65-2, 65-13, and 65-14.

  1. How should this data set be cited?

    Poppe, Lawrence J. , 2003, WIGLEY65: Fisheries Sediment Data:, 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: -73.467000
    East_Bounding_Coordinate: -63.967000
    North_Bounding_Coordinate: 44.700000
    South_Bounding_Coordinate: 39.200000

  3. What does it look like?

    wigley65 (GIF)
    Image map showing extent and distribution of data layer coverage.

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

    Beginning_Date: 19650115
    Ending_Date: 19651109
    Currentness_Reference: ground condition

  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 (383)

    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?

    wigley65.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.

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

    ValueDefinition
    WIGLEY1965Scientist and year samples were collected.

    AREA
    Geographic area in and around which the samples were collected. (Source: Scientist)

    ValueDefinition
    GULF OF MAINEGulf of Maine region

    CONSEC_NO
    Consecutive numbers and suffix assigned to samples (numbers reset for each cruise). (Source: Compiler)

    Character string containing the assigned consecutive number and, where appropriate, additional identification suffix.

    CRUISEID
    Cruise identifier (Source: Scientist)

    ValueDefinition
    AB2Albatross-IV; Leg 2
    AB13Albatross-IV; Leg 13
    AB14Albatross-IV; Leg 14

    Character string containing the abbreviated name of vessel (AB= ALBATROSS IV) and number designation the cruise

    STATION
    Number assigned to the station. (Source: Scientist)

    Character string containing the station number and, where necessary, additional station identifier suffix.

    DEVICE
    Sampler used to collect sediment (Source: Scientist)

    ValueDefinition
    PIPE DREDGEPipe dredge
    DREDGEDredge sampler

    Character string containing name of sampler

    DATE
    Date during which samples were collected (Source: Scientist)

    Character string containing year, month and day (YYYYMMDD) sample was collected.

    LATITUDE
    Latitude coordinate ofsample location (Source: Scientist)

    Range of values
    Minimum:39.200
    Maximum:44.700
    Units:Decimal degrees
    Resolution:0.001

    LONGITUDE
    Longitude coordinate of sample location (Source: Scientist)

    Range of values
    Minimum:-73.467
    Maximum:-63.967
    Units:Decimal degrees
    Resolution:0.001

    DEPTH
    Water depth of sample (Source: Scientist)

    Range of values
    Minimum:33
    Maximum:348
    Units:meters
    Resolution:1

    SHELL
    Percentage of shells in the sample (Source: Scientist)

    Character string containing a mixture of numbers and verbal comments

    COLOR
    Color of the sediments (Source: Scientist)

    Character string containing the comments on the color of the sediments

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

    Character string containing a mixture of numbers and verbal descriptions

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

    Character string containing a mixture of numbers and verbal descriptions

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

    Character string containing a mixture of numbers and verbal descriptions

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

    Character string containing a mixture of numbers and verbal descriptions

    FINES
    Percentage of silt plus clay in the sample (Source: Scientist)

    Character string containing a mixture of numbers and verbal descriptions

    CLASS
    Classification of sediment texture (Source: Scientist)

    ValueDefinition
    CLAYClay content
    FINE SANDfine sand content
    GRAVELgravel content
    GRAVEL, SILT-CLAYgravel, cilt-clay content
    GRAVELLY SANDgravelly sand content
    GRAVEL-SANDgravel-sand content
    SANDsand content
    SAND-GRAVELsand-gravel content
    SAND-SILTsand-silt content
    SANDY GRAVELsandy-gravel content
    SANDY SILT-CLAYsandy silt-clay content
    SILTsilt content
    SILT CLAYsilty clay content
    SILT-CLAYsilt-clay content
    TILLOID 

    Character string containing verbal descriptions of sediment texture

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?

    National Geophysical Data Center (NGDC) for supplying the original unpublished data sheets; Larry Poppe for creating the shapefile.

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

    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

Why was the data set created?
The purpose of this data layer is to provide a part of the Deck 41 data file in a form that could be used to interpret surficial sediment distributions off the northeastern United States.

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

    (source 1 of 1)
    Wigley, R.L., Unpublished Material, Raw Data Sheets: Bureau of Commercial Fisheries, Woods Hole, MA.

    Other_Citation_Details:
    Data collected during 1965 aboard the ALBATROSS IV during cruises 65-2, 65-13, and 65-14
    Type_of_Source_Media: Scanned raw data sheets

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

    Date: 13-Sep-2002 (process 1 of 1)
    Scanned images of the original raw data sheets were downloaded from the NGDC Seafloor Surficial Sediment (Deck 41) Data File. Lithologic descriptions, grain-size data, and sample identifiers were manually entered into Microsoft Excel and saved as an ASCII text file. The ASCII file was imported to an ArcView table. The table was later converted to an event theme in ArcView 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:
    • wigley65.txt

    Data sources produced in this process:

    • wigley65.shp
    • wigley65.dbf
    • wigley65.shx

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

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

  2. How accurate are the geographic locations?

    No information on navigational methods was provided with this data set , but navigation was probably by Loran A. Navigational accuracy is unknown.

  3. How accurate are the heights or depths?

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

    This data set contains fields that are only a subset of those fields in the NGDC Seafloor Surficial Sediment (Deck 41) Data File. This data set contains grain-size data, textural descriptions, navigation, and sample identifiers for 383 stations.

  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?

    Shapefile containg the grain-size data, textural descriptions, and sample identifiers for unpublished data generated by the Bureau of Marine Fisheries and disseminated by NGDC. Regional Mapping of Surficial Sediments: Gulf of Maine and Georges Bank, Aggregates and Habitats Projects, wigley65.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: 26-Mar-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 Wed Mar 26 09:48:34 2003

OFR03-001 Home | Introduction | Nomenclature | Browse Maps | Data Catalog | Data Dictionary


[an error occurred while processing this directive]