Portsmouth Naval Yard Sediment Data (JOHNSTON94 shapefile)

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Frequently anticipated questions:

What does this data set describe?

Title: Portsmouth Naval Yard Sediment Data (JOHNSTON94 shapefile)
Abstract:
The sediment data presented in this data layer were from an ecological study sited near the Portsmouth Naval Shipyard, Kittery, Maine. The analog data were originally converted into digital form for inclusion in a Gulf of Maine Contaminated Sediments Database.
  1. How might this data set be cited?
    Ward, Larry, and Poppe, Lawrence J., 2003, Portsmouth Naval Yard Sediment Data (JOHNSTON94 shapefile): Open-File Report 03-001, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science 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, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -70.764028
    East_Bounding_Coordinate: -70.640972
    North_Bounding_Coordinate: 43.134639
    South_Bounding_Coordinate: 43.068194
  3. What does it look like?
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/johnston94/johnston94-thumb.gif (GIF)
    Thumbnail image showing extent and distribution of data layer coverage.
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/johnston94/johnston94.gif (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: 1994
    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 (64)
    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 0.000001. Longitudes are given to the nearest 0.000001. 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?
    johnston94.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.
    LOCAL_ID
    Name used to identify samples (Source: Scientist) Sample identifiers
    REFERENCE
    Short reference (Source: Compilers)
    ValueDefinition
    JOHNSTONETAL1994Information unavailable from original metadata.
    YEAR
    Year that the samples were collected (Source: Scientist)
    Range of values
    Minimum:1992
    Maximum:1992
    Units:years
    Resolution:1
    LATITUDE
    Latitude coordinate of sample location (Source: Scientist)
    Range of values
    Minimum:43.068194
    Maximum:43.134639
    Units:decimal degrees
    Resolution:0.000001
    LONGITUDE
    Longitude coordinate of sample location (Source: Scientist)
    Range of values
    Minimum:-70.764028
    Maximum:-70.640972
    Units:decimal degrees
    Resolution:0.000001
    DEPTH_INT
    Depth (cm) interval of sample within the sediments (Source: Scientist) Sample depth intervals
    GRAVEL
    Percentage of gravel (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:15
    Units:percent
    Resolution:1
    SAND
    Percentage of sand in sample (Source: Scientist)
    Range of values
    Minimum:4
    Maximum:94
    Units:percent
    Resolution:1
    SILT
    Percentage of silt in sample (Source: Scientist)
    Range of values
    Minimum:4
    Maximum:60
    Units:percent
    Resolution:1
    CLAY
    Percentage of clay in sample (Source: Scientist)
    Range of values
    Minimum:2
    Maximum:47
    Units:percent
    Resolution:1
    FINES
    Percentage of fines (silt plus clay) in sample (Source: Scientist)
    Range of values
    Minimum:6
    Maximum:96
    Units:percent
    Resolution:1
    CLASSIFICA
    Lithologic classification of the sediments (Source: Scientist) Verbal textural descriptions
    SYSTEM
    Author and publication year of the system used to classify the sediments (Source: Scientist)
    ValueDefinition
    FOLK1980Information unavailable from original metadata.
    MEDIAN
    Median of the size distribution (Source: Scientist)
    Range of values
    Minimum:2.6
    Maximum:7.6
    Units:phi
    Resolution:0.01
    MEAN
    Mean of the size distribution (Source: Scientist)
    Range of values
    Minimum:2.43
    Maximum:7.9
    Units:phi
    Resolution:0.01
    STDDEV
    Standard deviation of the size distribution (Source: Scientist)
    Range of values
    Minimum:0.75
    Maximum:4.26
    Units:phi
    Resolution:0.01
    SKEWNESS
    Skewness of the size distribution (Source: Scientist)
    Range of values
    Minimum:-0.37
    Maximum:0.73
    Resolution:0.01
    KURTOSIS
    Kurtosis of the size distribution (Source: Scientist)
    Range of values
    Minimum:0.57
    Maximum:5.33
    Resolution:0.01
    Q1_MM
    First quartile in mm (Source: Scientist)
    Range of values
    Minimum:0.2
    Maximum:22.6
    Units:mm
    Resolution:0.01
    Q2_MM
    Second quartile in mm (Source: Scientist)
    Range of values
    Minimum:2.6
    Maximum:7.6
    Units:mm
    Resolution:0.01
    Q3_MM
    Third quartile in mm (Source: Scientist)
    Range of values
    Minimum:2.9
    Maximum:10.5
    Units:mm
    Resolution:0.01
    CFP10
    Cumulative frequency of the 10 phi fraction (Source: Scientist)
    Range of values
    Minimum:7.252
    Maximum:98.459
    Units:percent
    Resolution:0.001
    CFP09
    Cumulative frequency of the 9 phi fraction (Source: Scientist)
    Range of values
    Minimum:55.23
    Maximum:98.036
    Units:percent
    Resolution:0.001
    CFP08
    Cumulative frequency of the 8 phi fraction (Source: Scientist)
    Range of values
    Minimum:53.52
    Maximum:97.599
    Units:percent
    Resolution:0.001
    CFP07
    Cumulative frequency of the 7 phi fraction (Source: Scientist)
    Range of values
    Minimum:44.67
    Maximum:97.194
    Units:percent
    Resolution:0.001
    CFP06
    Cumulative frequency of the 6 phi fraction (Source: Scientist)
    Range of values
    Minimum:33.571
    Maximum:96.599
    Units:percent
    Resolution:0.001
    CFP05
    Cumulative frequency of the 5 phi fraction (Source: Scientist)
    Range of values
    Minimum:18.606
    Maximum:95.836
    Units:percent
    Resolution:0.001
    CFP04
    Cumulative frequency of the 4 phi fraction (Source: Scientist)
    Range of values
    Minimum:4.89
    Maximum:94.105
    Units:percent
    Resolution:0.001
    CFP03
    Cumulative frequency of the 3 phi fraction (Source: Scientist)
    Range of values
    Minimum:0.432
    Maximum:87.733
    Units:percent
    Resolution:0.001
    CFP02
    Cumulative frequency of the 2 phi fraction (Source: Scientist)
    Range of values
    Minimum:0.075
    Maximum:43.794
    Units:percent
    Resolution:0.001
    CFP01
    Cumulative frequency of the 1 phi fraction (Source: Scientist)
    Range of values
    Minimum:0.02
    Maximum:32.575
    Units:percent
    Resolution:0.001
    CFP00
    Cumulative frequency of the 0 phi fraction (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:23.668
    Units:percent
    Resolution:0.001
    CFPM1
    Cumulative frequency of the minus 1 phi fraction (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:14.652
    Units:percent
    Resolution:0.001
    CFPM2
    Cumulative frequency of the minus 2 phi fraction (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:6.951
    Units:percent
    Resolution:0.001
    CFPM3
    Cumulative frequency of the minus 3 phi fraction (Source: Scientist)
    Range of values
    Minimum:0
    Maximum:3.09
    Units:percent
    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)
    • Larry Ward
    • Lawrence J. Poppe
  2. Who also contributed to the data set?
    Please view the cross reference information for the original data set credit to Johnston (1994). Larry Ward (UNH) for entering the data from the source report, and Larry Poppe for creating the ArcView 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
    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 Johnston (1994).

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    Johnston, R.K., Munns, W.R., Short, F.T., and Walker, H.A., 1994, Estuarine Ecological Risk Assessment for Portsmouth Naval Yard, Kittery, Maine: U.S Navy Technical Report Phase 1: Problem Formulation, TR 16276, RDT&E Division, Naval Command, Control, and Ocean Surveillence Center.

    Type_of_Source_Media: paper
    Source_Contribution: Information unavailable from original metadata.
  2. How were the data generated, processed, and modified?
    Date: 04-Nov-2002 (process 1 of 5)
    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
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov
    Data sources used in this process:
    • johnston94.txt
    Data sources produced in this process:
    • johnston94.shp
    • johnston94.dbf
    • johnton94.shx
    Date: 02-Dec-2015 (process 2 of 5)
    Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 3 of 5)
    USGS Thesaurus keywords added to the keyword section. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 18-Nov-2019 (process 4 of 5)
    Crossref DOI link was added as the first link in the metadata. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 08-Sep-2020 (process 5 of 5)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?
    Johnston, R.K., Munns, W.R., Short, F.T., and Walker, H.A., 1994, Estuarine Ecological Risk Assessment for Portsmouth Naval Yard, Kittery, Maine: U.S. Navey Technical Report Phase 1: Problem Formulation, TR 16276, RDT&E Division, Naval Command, Control, and Ocean Surveillence Center.

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?
    Navigation was by differential GPS; positional accuracy approximately 10 m.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Identifiers, navigation, and grain-size data are provided for 64 stations.
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on the 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:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  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
    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? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. 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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Five files (johnston94.shp, johnston94.dbf, johnston94.shx, johnston94.sbx, johnston94.sbn) comprising the ArcView point shapefile components, 'prj' and 'avl' files, metadata text file and browse graphic. in format SHP (version 3.2) ESRI point shapefile Size: 0.002
      Network links: http://pubs.usgs.gov/of/2003/of03-001/data/seddata/johnston94/johnston94.zip
      Media you can order: CD-ROM (Density 650 Mbytes) (format ISO 9660)
      Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.
    • Cost to order the data: None

  5. What hardware or software do I need in order to use the data set?
    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 16-Nov-2021
Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2314 (voice)
(508) 457-2310 (FAX)
whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2003-001/johnston94.shp.faq.html>
Generated by mp version 2.9.50 on Tue Nov 16 10:06:29 2021