Identification_Information:
  Citation:
    Citation_Information:
      Originator: Larry Poppe
      Originator: Valerie Paskevich
      Publication_Date: 20020630
      Title: 81_2NAVT: Navigation lines for R/V ASTERIAS 81-2 (AST81-2)
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: U.S. Geological Survey Open-File Report
        Issue_Identification: 02-002
      Publication_Information:
        Publication_Place: Woods Hole Field Center
        Publisher: U.S. Geological Survey
      Online_Linkage: http://woodshole.er.usgs.gov/openfile/of02-002/data/nav/81_2nav/
      Larger_Work_Citation:
        Citation_Information:
          Originator: Larry Poppe
          Originator: Valerie Paskevich
          Publication_Date: 20020630
          Title: Geological Framework Data from Long Island Sound, 1981-1990: A Digital Data Release
          Geospatial_Data_Presentation_Form: atlas
          Series_Information:
            Series_Name: U.S. Geological Survey Open-File Report
            Issue_Identification: 02-002
          Publication_Information:
            Publication_Place: Woods Hole, MA
            Publisher: U. S. Geological Survey, Coastal and Marine Geology Program
          Online_Linkage: http://woodshole.er.usgs.gov/openfile/of02-002
  Description:
    Abstract: This GIS layer contains the shiptrack navigation collected aboard the R/V ASTERIAS during a 1981 geophysical curise to Block Island Sound and easternmost Long Island Sound.
    Purpose: The purpose is to disseminate a digital version of a regional map showing the distribution of sub-bottom seismic profiles (boomer) collected in Block Island Sound and easternmost Long Island Sound. The seismic data collected along these ship tracks can be used to provide useful information about the framework geology in this region.
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 19810911
        Ending_Date: 19810918
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -72.193500
      East_Bounding_Coordinate: -71.493170
      North_Bounding_Coordinate: 41.348500
      South_Bounding_Coordinate: 41.067000
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: General
      Theme_Keyword: U.S. Geological Survey
      Theme_Keyword: USGS
      Theme_Keyword: Coastal and Marine Geology Team
      Theme_Keyword: Coastal and Marine Geology Program
      Theme_Keyword: Woods Hole Field Center
      Theme_Keyword: Connecticut Department of Environmental Protection
      Theme_Keyword: ArcView
      Theme_Keyword: arcview
      Theme_Keyword: shapefile
      Theme_Keyword: lines
      Theme_Keyword: navigation
      Theme_Keyword: geophysical data
      Theme_Keyword: ship track
      Theme_Keyword: boomer data
      Theme_Keyword: R/V ASTERIAS
      Theme_Keyword: 1981
      Theme_Keyword: AST81-2
      Theme_Keyword: Geographic Information System
      Theme_Keyword: GIS
      Theme_Keyword: polyline
      Theme_Keyword: trackline
      Theme_Keyword: ship's track
    Place:
      Place_Keyword_Thesaurus: General
      Place_Keyword: Long Island Sound
      Place_Keyword: Connecticut
      Place_Keyword: New York
      Place_Keyword: Block Island Sound
  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.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U. S. Geological Survey
        Contact_Person: Larry Poppe
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 384 Woods Hole Road
        City: Woods Hole
        State_or_Province: MA
        Postal_Code: 02543-1598
        Country: USA
      Contact_Voice_Telephone: (508) 548-8700 x2314
      Contact_Facsimile_Telephone: (508) 457-2310
      Contact_Electronic_Mail_Address: lpoppe@usgs.gov"
      Hours_of_Service: 0800-1600
  Browse_Graphic:
    Browse_Graphic_File_Name: ../../../htmldocs/images/browse/81_2navt.gif
    Browse_Graphic_File_Description: R/V ASTERIAS cruise 81-2 extent of navigation lines shapefile shown in its spatial reference to Long Island Sound.
    Browse_Graphic_File_Type: GIF
  Data_Set_Credit: Sally Needell and Ralph Lewis, the chief scientists aboard the cruise; and Valerie Paskevich for completing the Arc processing and creation of the GIS data layer.
  Security_Information:
    Security_Classification_System: None
    Security_Classification: Unclassified
    Security_Handling_Description: None
  Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.1.1.649
  Cross_Reference:
    Citation_Information:
      Originator: Sally W. Needel
      Originator: Ralph S. Lewis
      Publication_Date: 19840000
      Title: Geology of Block Island Sound, R.I. and N.Y.
      Geospatial_Data_Presentation_Form: map
      Series_Information:
        Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
        Issue_Identification: MF-1621
      Publication_Information:
        Publication_Place: Woods Hole, MA
        Publisher: U.S. Geological Survey
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: All attribute data were recorded by the chief scientist and entered and checked by the compilers in a consistent manner.
  Logical_Consistency_Report: No additional checks for topological consistency were performed on this data set.
  Completeness_Report: Complete information is provided for all navigation lines in the data set. Navigation points are spaced at 5 minute intervals (approx) and at course changes or line events (start/end).  Continous navigation is not available.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: A navigation was done by Loran C. Typical Loran accuracy for LIS is about 100 m.
      Quantitative_Horizontal_Positional_Accuracy_Assessment:
        Horizontal_Positional_Accuracy_Value: +/-100 m
        Horizontal_Positional_Accuracy_Explanation: Typical positioning accuracy of Loran
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report: Tides are less than 2 m
      Quantitative_Vertical_Positional_Accuracy_Assessment:
        Vertical_Positional_Accuracy_Value: <2m
        Vertical_Positional_Accuracy_Explanation: Tides are less than 2 m.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: Sally W. Needel
          Originator: Ralph S. Lewis
          Publication_Date: 19840000
          Title: Geology of Block Island Sound, R.I. and N.Y.
          Geospatial_Data_Presentation_Form: map
          Series_Information:
            Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
            Issue_Identification: MF-1621
          Publication_Information:
            Publication_Place: Woods Hole, MA
            Publisher: U.S. Geological Survey
      Type_of_Source_Media: High-resolution seismic-reflection boomer lines navigated with Loran C
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19810000
        Source_Currentness_Reference: ground condition
      Source_Citation_Abbreviation: R/V ASTERIAS 81-2 LORAN-C printouts
      Source_Contribution: During field work conducted in Block Island Sound during September 1981 high-resolution seismic-reflection data were collected.  This data set is the 5-min. navigation from that cruise.
    Process_Step:
      Process_Description: An ArcView shapefile containing the five-minute navigation for cruise AST81-2 was edited to create separate shapefiles for each of the individual line segments.
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      Process_Contact:
        Contact_Information:
          Contact_Organization_Primary:
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            Contact_Person: Valerie Paskevich
          Contact_Position: Computer Specialist
          Contact_Address:
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            State_or_Province: MA
            Postal_Code: 02543-1598
            Country: USA
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      Source_Used_Citation_Abbreviation: line25t.dbf, line25t.shp, line25t.shx
      Source_Used_Citation_Abbreviation: line26t.dbf, line26t.shp, line26t.shx
      Source_Used_Citation_Abbreviation: line27at.dbf, line27at.shp, line27at.shx
      Source_Used_Citation_Abbreviation: line27bt.dbf, line27bt.shp, line27bt.shx
      Source_Used_Citation_Abbreviation: line28at.dbf, line28at.shp, line28at.shx
      Source_Used_Citation_Abbreviation: line28bt.dbf, line28bt.shp, line28bt.shx
      Source_Used_Citation_Abbreviation: line28ct.dbf, line28ct.shp, line28ct.shx
      Source_Used_Citation_Abbreviation: line28dt.dbf, line28dt.shp, line28dt.shx
      Source_Used_Citation_Abbreviation: line29at.dbf, line29at.shp, line29at.shx
      Source_Used_Citation_Abbreviation: line29bt.dbf, line29bt.shp, line29bt.shx
      Source_Used_Citation_Abbreviation: line30t.dbf, line30t.shp, line30t.shx
      Source_Used_Citation_Abbreviation: line31t.dbf, line31t.shp, line31t.shx
      Process_Date: 20020324
      Source_Produced_Citation_Abbreviation: 81_2navt.dbf, 81_2navt.shp, 81_2nav.shx
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Valerie Paskevich
            Contact_Organization: U.S. Geological Survey
          Contact_Position: Computer Specialist
          Contact_Address:
            Address_Type: mailing and physical address
            Address: 384 Woods Hole Road
            City: Woods Hole
            State_or_Province: MA
            Postal_Code: 02543-1598
            Country: USA
          Contact_Voice_Telephone: (508) 548-8700 x2281
          Contact_Facsimile_Telephone: (508) 457-2310
          Contact_Electronic_Mail_Address: vpaskevich&#64;usgs&#46;gov"
  Cloud_Cover: Not applicable
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: String
      Point_and_Vector_Object_Count: 42
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.00001
      Longitude_Resolution: 0.00001
      Geographic_Coordinate_Units: Decimal degrees
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.400000
      Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: 81_2navt
      Entity_Type_Definition: shapefile attribute table
      Entity_Type_Definition_Source: ESRI
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Range_Domain:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy_Explanation: computer generated
      Attribute_Measurement_Frequency: None planned
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: ID
      Attribute_Definition: Sequential number assigned to polyline segment.
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 0
          Range_Domain_Maximum: 41
          Attribute_Units_of_Measure: integer
          Attribute_Measurement_Resolution: 1
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: 1
      Attribute_Measurement_Frequency: As needed
    Attribute:
      Attribute_Label: LENGTH
      Attribute_Definition: length of line segment in native units
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: .013
          Range_Domain_Maximum: .293
          Attribute_Measurement_Resolution: .001
      Attribute_Domain_Values:
        Range_Domain:
          Attribute_Units_of_Measure: Time in hours and minutes in military time
          Attribute_Measurement_Resolution: Hours and minutes
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: .001
    Attribute:
      Attribute_Label: CRUISEID
      Attribute_Definition: USGS assigned cruise identifier
      Attribute_Definition_Source: Recorded by Loran-C navigation system and noted in cruise log book.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: AST81-2
          Enumerated_Domain_Value_Definition: Assigned identifier for cruise R/V ASTERIAS 81-2
          Enumerated_Domain_Value_Definition_Source: USGS, Coastal and Marine Geology Program, Woods Hole Field Center, data archives
      Attribute_Domain_Values:
        Range_Domain:
          Attribute_Units_of_Measure: Time in hours and minutes in military time
          Attribute_Measurement_Resolution: Hours and minutes
      Beginning_Date_of_Attribute_Values: 19810911
      Ending_Date_of_Attribute_Values: 19810918
      Attribute_Value_Accuracy_Information:
    Attribute:
      Attribute_Label: DATE
      Attribute_Definition: Date which the navigation data was collected.  Values are recorded as an ASCII string.
      Attribute_Definition_Source: Northstar 6000 Loran-C navigation recorder
      Attribute_Domain_Values:
        Unrepresentable_Domain: Character String
    Attribute:
      Attribute_Label: LINE
      Attribute_Definition: Number assigned to the seismic line for which the navigation was collected
      Attribute_Definition_Source: Chief Scientist
      Attribute_Domain_Values:
        Range_Domain:
          Range_Domain_Minimum: 1
          Range_Domain_Maximum: 31
          Attribute_Units_of_Measure: integer
          Attribute_Measurement_Resolution: 1
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy_Explanation: Lines were assigned integers
      Attribute_Measurement_Frequency: As needed
    Attribute:
      Attribute_Label: SOL
      Attribute_Definition: Start of Line (SOL):Time that recording of seismic line began.
      Attribute_Definition_Source: Recorded by Loran-C navigation system and noted in cruise log book.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: Hour:minute
          Enumerated_Domain_Value_Definition: Hour and minutes
          Enumerated_Domain_Value_Definition_Source: Recorded by Loran-C navigation system and noted in cruise log book.
      Beginning_Date_of_Attribute_Values: 19810911
      Ending_Date_of_Attribute_Values: 19810918
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: Minutes
        Attribute_Value_Accuracy_Explanation: Time in hours and minutes recorded as military time
      Attribute_Measurement_Frequency: As needed
    Attribute:
      Attribute_Label: EOL
      Attribute_Definition: End of Line (EOL): Time that recording of seismic line was completed.
      Attribute_Definition_Source: Recorded by Loran-C navigation system and noted in cruise log book.
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: HH:MM
          Enumerated_Domain_Value_Definition: Hour and minute
          Enumerated_Domain_Value_Definition_Source: Recorded by Loran-C navigation system and noted in cruise log book.
      Beginning_Date_of_Attribute_Values: 19810911
      Ending_Date_of_Attribute_Values: 19810918
      Attribute_Value_Accuracy_Information:
        Attribute_Value_Accuracy: Minutes
        Attribute_Value_Accuracy_Explanation: Time in hours and minutes recorded as military time
      Attribute_Measurement_Frequency: As needed
    Attribute:
      Attribute_Label: IMAGE
      Attribute_Definition: Name of associated GIF image containing browse version of seismic record for line.
      Attribute_Definition_Source: assigned file name
      Attribute_Domain_Values:
        Unrepresentable_Domain: GIF file name
  Overview_Description:
    Entity_and_Attribute_Overview: This data layer (navigation collected onboard the R/V ASTERIAS cruise 81-2 to BIS and easternmost LIS) provides information location of seismic data used to interpret the geologic framework.
    Entity_and_Attribute_Detail_Citation: Geological framework data from Long Island Sound and vicinity, 1981-1990: a digital release
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U. S. Geological Survey
        Contact_Person: Larry Poppe
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 384 Woods Hole Road
        City: Woods Hole
        State_or_Province: MA
        Postal_Code: 02543-1598
        Country: USA
      Contact_Voice_Telephone: (508) 548-8700 x2314
      Contact_Facsimile_Telephone: (508) 457-2310
      Contact_Electronic_Mail_Address: lpoppe&#64;usgs&#46;gov"
  Resource_Description: Long Island Sound: 81_2navt.shp
  Distribution_Liability: 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.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ArcView
        Format_Version_Number: 3.2
        Format_Specification: shapefile
        Format_Information_Content: The five ArcView shapefiles (81_2navt.dbf, 81_2navt.shp, 81_2navt.shx, 81_2navt.avl, 81_2navt.prj) comprising the navigation data for the R/V ASTERIAS 81_2 cruise in Block Island Sound and easternmost Long Island Sound and an ASCII version of the data layer metadata file.
        File_Decompression_Technique: zip
        Transfer_Size: 16.6 Kbytes
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://woodshole.er.usgs.gov/openfile/of02-002/data/nav/81_2nav/81_2navt.zip
        Offline_Option:
          Offline_Media: DVD
          Recording_Capacity:
            Recording_Density: 4.7
            Recording_Density_Units: Gbytes
          Recording_Format: UDF
          Compatibility_Information: 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.
    Fees: none
  Custom_Order_Process: None
  Technical_Prerequisites: The 81_2 navigation overlay 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.
  Available_Time_Period:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 20020630
Metadata_Reference_Information:
  Metadata_Date: 20020417
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Valerie Paskevich
        Contact_Organization: U. S. Geological Survey
      Contact_Position: computer specialist
      Contact_Address:
        Address_Type: mailing and physical address
        Address: 384 Woods Hole Road
        City: Woods Hole
        State_or_Province: MA
        Postal_Code: 02543-1598
        Country: USA
      Contact_Voice_Telephone: (508) 548-8700 x2281
      Contact_Facsimile_Telephone: (508) 457-2310
      Contact_Electronic_Mail_Address: vpaskevich&#64;usgs&#46;gov"
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None
  Metadata_Security_Information: