Locations of sediment samples with Clostridium perfringens in Long Island Sound

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Frequently anticipated questions:

What does this data set describe?

Title:
Locations of sediment samples with Clostridium perfringens in Long Island Sound
Abstract:
This GIS layer contains a point layer showing the the location of surficial sediment samples in Long Island containing Clostridium perfringens and the concentration of Clostridium perfringens in those samples.
  1. How might this data set be cited?
    Marilyn R. Buchholtz ten Brink, 2000, Locations of sediment samples with Clostridium perfringens in Long Island Sound: Open-File Report 2000-304, U. S. Geological Survey, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    Marilyn R. Buchholtz ten Brink was the editor of this individual dataset. The accompanying chapter in the OFR includes the authors Ellen L. Mecray, Erin L. Galvin, and Kathleen Feldman.
    This is part of the following larger work.

    Paskevich, Valerie, and Poppe, Larry, 2000, Georeferenced Sea-Floor Mapping and Bottom Photography in Long Island Sound: U. S. Geological Survey Open-File Report OFR 00-304, U. S. Geological Survey, Woods Hole Field Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    Valerie F. Paskevich and Lawrenc J. Poppe are the editors of the publication which contains 12 individual chapters with various authors.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -73.7469
    East_Bounding_Coordinate: -72.2128
    North_Bounding_Coordinate: 41.2919
    South_Bounding_Coordinate: 40.8405
  3. What does it look like?
    http://pubs.usgs.gov/of/of00-304/htmldocs/images/browse/cperfloc.gif (GIF)
    image showing the extent of the GIS layer and the distribution of surficial samples with Clostridium perfringens spores in Long Island Sound
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1996
    Currentness_Reference:
    Ground Condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: point shapefile
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (216)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 18
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.99960
      Longitude_of_Central_Meridian: -075.000000
      Latitude_of_Projection_Origin: +00.000000
      False_Easting: 500000
      False_Northing: 0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 4000
      Ordinates (y-coordinates) are specified to the nearest 4000
      Planar coordinates are specified in Meters
      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is GRS80.
      The semi-major axis of the ellipsoid used is 6378137.00.
      The flattening of the ellipsoid used is 1/298.257222101.
      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 2
      Depth_Distance_Units: Meters
      Depth_Encoding_Method: Attribute values
  7. How does the data set describe geographic features?
    cperfloc.dbf
    Shapefile attribute file (Source: ESRI)
    Cperflocsn
    Unique assigned sequential identifier of sample. (Source: User Defined)
    Range of values
    Minimum:1.00000
    Maximum:215.00000
    Row__
    Unique assigned sequential identifier of sample. (Source: User Defined)
    Range of values
    Minimum:1.000000
    Maximum:219.000000
    Cruise
    Name of Cruise from which sample collected. (Source: User Defined) Character field
    Station_na
    Name or number of station at which sample was collected. (Source: User Defined) Character field
    Longitude_
    Longitude, in decimal-degrees, of sample location. (Source: User Defined)
    Range of values
    Minimum:-73.746600
    Maximum:-72.214300
    Units:decimal-degrees
    Latitude__
    Latitude, in decimal-degrees, of sample location. (Source: User Defined)
    Range of values
    Minimum:40.866000
    Maximum:41.269600
    Units:decimal-degrees
    Year_sampl
    Year sample was collected from the natural environment. (Source: User Defined)
    Range of values
    Minimum:1996.000000
    Maximum:1997.000000
    Date_sampl
    Date when the sample was collected from the natural environment. (Source: User Defined)
    Range of values
    Minimum:69.000000
    Maximum:176.000000
    Units:Julian day
    Time__gmt_
    Hour and minutes when the sample was collected from the natural environment in Greenwich Mean Time (GMT). (Source: User Defined) Character field
    Water_dept
    Measured depth of water overlying sediment at sample time, in original units (not corrected for tides). (Source: User Defined)
    Range of values
    Minimum:2.600000
    Maximum:52.000000
    Units:meters
    Sample_int
    The depth of the sample in the sediment in units of cm. (Source: User Defined) Character field
    C__perfrin
    Concentration of Clostridium perfringens in the sample in units of spores/g wet sediment. (Source: User Defined)
    Range of values
    Minimum:0.0000
    Maximum:7900.000000
    Units:spore count per gram of wet sediment
    Item003
    Any qualifier information or comments about the Clostridium perfringens wet sediment; e.g. "less than" (< or 1t); analytical trouble with this sample; corrections made; indications of poor quality data; etc. (Source: User Defined) Character field
    Item004
    Concentration of Clostridium perfringens in the sample in units of spores/g dry sediment. (Source: User Defined)
    Range of values
    Minimum:0.000000
    Maximum:15000.000000
    Units:spore count per gram of dry sediment
    Item005
    Any qualifier information or comments about the Clostridium perfringens dry sediment; e.g. "less than" (< or 1t); analytical trouble with this sample; corrections made; indications of poor quality data; etc. (Source: User Defined) Character field
    C_perf_qua
    Any qualifier information or comments about the Clostridium perfringens concentration; e.g. "less than" (< or 1t); analytical trouble with this sample; corrections made; indications of poor quality data; etc. (Source: User Defined) Character field
    Entity_and_Attribute_Overview:
    This is a point layer showing the distribution of samples collected by the USGS during the time period of 1996-1997. Attribute information associated with the samples provide analysis of Clostridium perfringens found in the samples.
    Entity_and_Attribute_Detail_Citation: Buchholtz ten Brink and others, 2000

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Marilyn R. Buchholtz ten Brink
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U. S. Geological Survey
    Attn: Marilyn R. Buchholtz ten Brink
    chemist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2392 (voice)
    mtenbrink@usgs.gov

Why was the data set created?

The purpose of this layer is to disseminate a digital version of the location of samples containing Clostridium perfringens, and concentrations of Clostridium perfringens in those samples.

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: 1998 (process 1 of 2)
    Grab samples were frozen at sea, and freeze-dried in the lab. Analyses for Clostridium perfringens were performed by Biological Analytical Labs of North Kingston, RI, according to methods described by Emerson and Cabelli (1982) and Bisson and Cabelli (1979). Data consisting of station navigation and Clostridium perfringens concentrations in the surficial sediments were inmported as text files. Person who carried out this activity:
    M.R. Buchholtz ten Brink
    U.S. Geological Survey
    Chemist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2392 (voice)
    mtenbrink@usgs.gov
    Date: 26-Jun-2023 (process 2 of 2)
    Edits to the metadata were made to fix any errors that MP v 2.9.50 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. Author names were edited to remove "ed." and "comp". Added links to access the data including the DOI link. Added USGS Thesaurus keywords. Added keywords section with USGS persistent identifier as theme keyword (PID). Fixed the ellipsoid name to agree with the datum. Fixed the denominator of flattening ratio. Updated the distribution liability. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. A generic email in the metadata contact was used, along with adding contact instructions. 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. (20230626) Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    (508) 548-8700 x2251 (voice)
    (508) 457-2310 (FAX)
    vatnipp@usgs.gov
  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?
  2. How accurate are the geographic locations?
    Ship navigation was by radar and line of sight (sextant) and is therefore of variable accuracy.
  3. How accurate are the heights or depths?
    No attempt was made to correctdepths for tides. Accuracy is assumed to be 1 to 2 meters.
  4. Where are the gaps in the data? What is missing?
    none
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on this data set.

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 The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.
Although this derived data set and its lineage dataset have been used by the USGS, 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.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    Attn: Marilyn R. Buchholtz ten Brink
    chemist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2392 (voice)
    mtenbrink@usgs.gov
  2. What's the catalog number I need to order this data set? Long Island Sound: cperfloc.shp
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. Is there some other way to get the data?
    None
  6. What hardware or software do I need in order to use the data set?
    The cperfloc layer is available in an ArcView shapefile format. The user must have ESRI's 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 the data.

Who wrote the metadata?

Dates:
Last modified: 26-Jun-2023
Metadata author:
Valerie Paskevich
U.S. Geological Survey
computer specialist
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2281 (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 person is no longer with the USGS.
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/ofr2000-304/cperfloc.faq.html>
Generated by mp version 2.9.51 on Mon Jun 26 12:35:40 2023