5 m Bathymetric Contours for Long Island Sound (LIS1992)

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Frequently anticipated questions:

What does this data set describe?

Title: 5 m Bathymetric Contours for Long Island Sound (LIS1992)
This bathymetric contour data set was derived from a gridded data set obtained from URI (B.Tyce, G. Hatcher). They used the "Gridder" program to obtain the grid. This gridded data set was generated from the original NOS soundings from 9 track tape that was cleaned up and edited at URI. This work was done with the intention of producing the color poster called "Long Island Sound Estuary" (Connecticut Dept. of Environmental Protection"), 1993. The accuracy is questionable.
  1. How might this data set be cited?
    Schmuck, Eric, Unknown, 5 m Bathymetric Contours for Long Island Sound (LIS1992):.

    Online Links:

    This is part of the following larger work.

    Poppe, Larry, and Paskevich, Valerie, 2002, Geologic Framework Data from Long Island Sound, 1981-1990: A Digital Data Release: U.S. Geological Survey Open-File Report 2002-002, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -74.998530
    East_Bounding_Coordinate: -71.000107
    North_Bounding_Coordinate: 41.995619
    South_Bounding_Coordinate: 40.000462
  3. What does it look like?
    ../../htmldocs/images/browse/lis1992.gif (GIF)
    Image showing extent of coverage for Long Island Sound 5 meter bathymetry contour data layer lis1992.
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: unknown
    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):
      • String (2955)
    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 0.0000001. Longitudes are given to the nearest 0.0000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
  7. How does the data set describe geographic features?
    shapefile attribute table (Source: ESRI)
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Feature geometry. (Source: ESRI)
    PolyLineinformation unavailable from original metadata
    Coordinates defining the features.
    Length of vector segment in native units. (Source: User Defined)
    Range of values
    Depth value, in meters, of vector contour. Value recorded as negative. (Source: User Defined)
    Range of values

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Eric Schmuck
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U. S. Geological Survey, Coastal and Marine Geology Program
    Attn: Valerie Paskevich
    Computer Specialist, GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2281 (voice)
    508-457-2310 (FAX)

Why was the data set created?

These data can be used with geographic information systems (GIS) software to display geologic and oceanographic information for the U. S. Atlantic northeast. The data are to be used for illustrations and illustrative maps on scientific topics. They are intended for science researchers, students, policy makers, and the general public. There is NO ASSURANCE of their accuracy, completeness, or precision.

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: 18-Aug-2021 (process 1 of 1)
    The metadata was edited to remove errors as well as update some information. Edits include updating the citation section with the DOI link and modifying the title, added the USGS Thesaurus and ISO 19115 Topic Category thesaurus, added keywords section with USGS persistent identifier as theme keyword, added link to cross-reference, used a generic email address in metadata, replaced distribution liability with FSP statement. Other blank fields were deleted. The metadata date (20020405), but not the contact (except email and contact instructions) was updated. The metadata available from a harvester may supersede metadata available from the publication. 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 Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
  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?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Information unavailable from the original metadata
  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
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the agency as to the accuracy of the data.
The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data.
This information is NOT intended for navigational or legal purposes.
Any use of trade, firm or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. Who distributes the data set? (Distributor 1 of 1)
    Valerie Paskevich
    U.S. Geological Survey
    Computer Specialist
    384 Woods Hole Road
    Woods Hole, MA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
  2. What's the catalog number I need to order this data set? Long Island Sound: lis1992.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?
    • Availability in digital form:
      Data format: The seven ArcView shapefiles (lis1992.dbf, lis1992.shp, lis1992.shx, lis1992.sbn, lis1992.sbx, lis1992.avl, lis1992.prj) comprising the 1 meter bathymetric contours for Long Island Sound and an ASCII version of the metadata. in format ArcView shapefile (version 3.2) Size: 1
      Network links: https://doi.org/10.3133/ofr022
      Media you can order: DVD (Density 4.75 Gbytes) (format UDF)
      Note: The user must have a system with a DVD drive capable of reading an UDF standard DVD-R disk. To browse the information contained on this disk, the user must also have a current version of WWW browser available. The user must also have the software installed on their computer system capable to unzip the archived file.
    • Cost to order the data: none

Who wrote the metadata?

Last modified: 01-Sep-2021
Metadata author:
Valerie Paskevich
U.S. Geological Survey, Coastal and Marine Geology Program
Computer Specialist, GIS Coordinator
384 Woods Hole Road
Woods Hole, MA

508-548-8700 x2281 (voice)
508-457-2310 (FAX)
The metadata contact email address is a generic address in the event the metadata contact 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/ofr2002-002/lis1992_meta.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:20:17 2021