Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: Rhea, Susan
        Publication_Date: 1997
        Title:
          Seismotectonic maps in the vicinity of the lower Wabash Valley,
          Illinois, Indiana, and Kentucky - Digital Spatial Database:
          Seismic reflection lines
        Geospatial_Data_Presentation_Form: map
        Series_Information:
          Series_Name: U.S. Geological Survey Open-File Report
          Issue_Identification: 97-0681
        Publication_Information:
          Publication_Place: Denver,CO
          Publisher: U.S. Geological Survey
        Online_Linkage: <http://pubs.usgs.gov/of/1997/ofr-97-0681/>
    Description:
      Abstract:
        This cover includes seismic reflection lines that have geophysical
        cross-sectional interpretations constraining subsurface structures
        that may penetrate to hypocentral depths.  Lines were gathered from
        theses, dissertations, and publications.

      Purpose:
        The data was generated to help in understanding the seismotectonic hazards
        in the vicinity of the lower Wabash Valley. This data complements similar
        data collected in the vicinity of New Madrid, MO
        (US Geological Survey Open-File Report 95-0574, available via ftp at
        <http://pubs.usgs.gov/of/1995/ofr-95-0574/>)

    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 1960
          Ending_Date: 1996
      Currentness_Reference: all discovered lines are included
    Status:
      Progress: complete
      Maintenance_and_Update_Frequency: none planned

    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -89
        East_Bounding_Coordinate: -87
        North_Bounding_Coordinate: 39
        South_Bounding_Coordinate: 36.5
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: none
        Theme_Keyword: seismic reflection line
      Place:
        Place_Keyword_Thesaurus: None
        Place_Keyword: Wabash Valley
      Theme:
        Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
        Theme_Keyword: 1200 - Geophysics
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
        Theme_Keyword: geoscientificInformation
      Place:
        Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
        Place_Keyword: 17121 = Marion
        Place_Keyword: 17025 = Clay
        Place_Keyword: 17159 = Richland
        Place_Keyword: 17101 = Lawrence
        Place_Keyword: 17185 = Wabash
        Place_Keyword: 17047 = Edwards
        Place_Keyword: 17191 = Wayne
        Place_Keyword: 17081 = Jefferson
        Place_Keyword: 17055 = Franklin
        Place_Keyword: 17065 = Hamilton
        Place_Keyword: 17193 = White
        Place_Keyword: 17059 = Gallatin
        Place_Keyword: 17165 = Saline
        Place_Keyword: 17199 = Williamson
        Place_Keyword: 17087 = Johnson
        Place_Keyword: 17151 = Pope
        Place_Keyword: 17069 = Hardin
        Place_Keyword: 17127 = Massac
        Place_Keyword: 17153 = Pulaski
        Place_Keyword: 21007 = Ballard
        Place_Keyword: 21145 = McCracken
        Place_Keyword: 21039 = Carlisle
        Place_Keyword: 21105 = Hickman
        Place_Keyword: 21075 = Fulton
        Place_Keyword: 21083 = Graves
        Place_Keyword: 21035 = Calloway
        Place_Keyword: 21157 = Marshall
        Place_Keyword: 21139 = Livingston
        Place_Keyword: 21055 = Crittenden
        Place_Keyword: 21143 = Lyon
        Place_Keyword: 21033 = Caldwell
        Place_Keyword: 21221 = Trigg
        Place_Keyword: 21047 = Christian
        Place_Keyword: 21219 = Todd
        Place_Keyword: 21177 = Muhlenberg
        Place_Keyword: 21107 = Hopkins
        Place_Keyword: 21233 = Webster
        Place_Keyword: 21225 = Union
        Place_Keyword: 21101 = Henderson
        Place_Keyword: 21059 = Daviess
        Place_Keyword: 21149 = McLean
        Place_Keyword: 21183 = Ohio
        Place_Keyword: 21141 = Logan
        Place_Keyword: 47161 = Stewart
        Place_Keyword: 47125 = Montgomery
        Place_Keyword: 47147 = Robertson
        Place_Keyword: 18129 = Posey
        Place_Keyword: 18163 = Vanderburgh
        Place_Keyword: 18173 = Warrick
        Place_Keyword: 18147 = Spencer
        Place_Keyword: 18037 = Dubois
        Place_Keyword: 18125 = Pike
        Place_Keyword: 18051 = Gibson
        Place_Keyword: 18083 = Knox
        Place_Keyword: 18027 = Daviess
    Access_Constraints: none
    Use_Constraints: none
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Susan Rhea
          Contact_Organization: US Geological Survey
        Contact_Position: Geophysicist
        Contact_Address:
          Address_Type: mailing address
          Address: MS966, Box 25046, Federal Center
          City: Denver
          State_or_Province: CO
          Postal_Code: 80225
          Country: USA
        Contact_Voice_Telephone: 303-273-8639
        Contact_Facsimile_Telephone: 303-273-8600
        Contact_Electronic_Mail_Address: rhea@usgs.gov
        Contact_Instructions: email is the best way to make contact
    Data_Set_Credit: Sharon Diehl
    Native_Data_Set_Environment: SunOS, 5.5.1, sun4u UNIX, ARC/INFO version 7.1.1
    Cross_Reference:
      Citation_Information:
        Originator: Wheeler, R.L., Diehl, S.F., Rhea, Susan, Sargent, M.L., Bear, G.W.
        Publication_Date: 1997
        Title:
          Map showing selected wells and geophysical survey and modeling lines
          in the vicinity of the lower Wabash Valley, Illinois, Indiana,
          Kentucky
        Geospatial_Data_Presentation_Form: map
        Series_Information:
          Series_Name: U.S. Geological Survey Miscellaneous Investigations Series Map
          Issue_Identification: I-2583-C
        Publication_Information:
          Publication_Place: Denver, CO
          Publisher: U.S. Geological Survey

  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report:
        The attribute accuracy is described, where present, with each
        attribute defined in the Entity and Attribute Section.
    Logical_Consistency_Report: Chain-node topology present.
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Quantitative_Horizontal_Positional_Accuracy_Assessment:
          Horizontal_Positional_Accuracy_Value: 5000 m
          Horizontal_Positional_Accuracy_Explanation: Resolution as reported
    Lineage:
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Bear, G.W., Rupp, J.A., and Rudman, A.J.
            Publication_Date: 1997
            Title:
              Seismic interpretation of the deep structure of the Wabash Valley fault
              system
            Series_Information:
              Series_Name: Seismological Research Letters
              Issue_Identification: v. 68, no. 4
            Publication_Information:
              Publisher: Seis. Soc. America
            Other_Citation_Details: p. 624-640
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Bertagne, A.J., and Leising, T.C.
            Publication_Date: 1991
            Title:
              Interpretation of seismic data from the Rough Creek graben of western
              Kentucky and southern Illinois, in Leighton, M.W., Kolata, D.r., Oltz, D.F.,
              and Eidel, J.J., eds., Interior cratonic basins
            Series_Information:
              Series_Name: American Association of Petroleum Geologists Memoir
              Issue_Identification: 51
            Publication_Information:
              Publisher: AAPG
            Other_Citation_Details: p. 199-208
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Heigold, P.C. and Kolata, D.R.
            Publication_Date: 1993
            Title: Proterozoic crustal boundary in the southern part of the Illinois Basin
            Series_Information:
              Series_Name: Tectonophysics
              Issue_Identification: v. 217
            Publication_Information:
              Publisher: Elsevier Press
            Other_Citation_Details: p 307-319
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Heigold, P.C., and Oltz, D.F.
            Publication_Date: 1991
            Title: Seismic expression of the stratigraphic succession
            Series_Information:
              Series_Name: American Association of Petroleum Geologists Memoir
              Issue_Identification: 51
            Publication_Information:
              Publisher: AAPG
            Other_Citation_Details: p. 169-178
            Larger_Work_Citation:
              Citation_Information:
                Originator: Leighton, M.W.
                Originator: Kolata, D.R.
                Originator: Oltz, D.F.
                Originator: Eidel, J.J.
                Title: Interior cratonic basins
                Publication_Date: 1991
                Series_Information:
                  Series_Name: American Association of Petroleum Geologists Memoir
                  Issue_Identification: 51
                Publication_Information:
                  Publisher: AAPG
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Potter, C.J., Goldhaber, M.B., Heigold, P.C., and Drahovzal, J.A.
            Publication_Date: 1995
            Title:
              Structure of the Reelfoot-Rough Creek rift system, Fluorspar area fault
              complex, and Hicks dome, southern Illinois and western Kentucky-New
              constraints from regional seismic relfection data
            Series_Information:
              Series_Name: U.S. Geological Survey Professional Paper
              Issue_Identification: 1538, chapter Q
            Publication_Information:
              Publisher: U.S. Geological Survey
            Other_Citation_Details: Chapter Q, p Q1-Q19
            Larger_Work_Citation:
              Citation_Information:
                Originator: Shedlock, K.M.
                Originator: Johnston, A.C.
                Title: Investigations of the New Madrid seismic zone
                Publication_Date: 1995
                Series_Information:
                  Series_Name: U.S. Geological Survey Professional Paper
                  Issue_Identification: 1538
                Publication_Information:
                  Publisher: U.S. Geological Survey
                  Publication_Place: Denver, Colorado
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Rene, R.M., and Stanonis, F.L.
            Publication_Date: 1995
            Title: Reflection seismic profiling of the Wabash Valley fault system in the Illinois Basin
            Series_Information:
              Series_Name: U.S. Geological Survey Professional Paper
              Issue_Identification: 1538, chapter O
            Publication_Information:
              Publisher: U.S. Geological Survey
            Other_Citation_Details: Chapter O, p. O1-O33
            Larger_Work_Citation:
              Citation_Information:
                Originator: Shedlock, K.M.
                Originator: Johnston, A.C.
                Title: Investigations of the New Madrid seismic zone
                Publication_Date: 1995
                Series_Information:
                  Series_Name: U.S. Geological Survey Professional Paper
                  Issue_Identification: 1538
                Publication_Information:
                  Publisher: U.S. Geological Survey
                  Publication_Place: Denver, Colorado
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Rudman, A.J.
            Publication_Date: 1963
            Title:
              A study of seismic reflections from the surface of the basement complex in
              Indiana
            Series_Information:
              Series_Name: Indiana University Ph.D. dissertation
            Publication_Information:
              Publication_Place: Bloomington, Indiana
              Publisher: Indiana University
            Other_Citation_Details: 168 p., 8 folded plates
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Sexton, J.L., Braille, L.W., Hinze, W.J., and Campbell, M.J.
            Publication_Date: 1986
            Title:
              Seismic reflection profiling studies of a buried Precambrian rift beneath
              the Wabash Valley fault zone
            Series_Information:
              Series_Name: Geophysics
              Issue_Identification: v. 51
            Other_Citation_Details: p. 640-660
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Sexton, J.L.
            Publication_Date: 1995
            Title: Written communication
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Source_Information:
        Source_Citation:
          Citation_Information:
            Originator: Sexton, J.L.
            Publication_Date: 1996
            Title: Written communication
        Source_Scale_Denominator: variable
        Type_of_Source_Media: figure, map
        Source_Time_Period_of_Content:
          Time_Period_Information:
            Range_of_Dates/Times:
              Beginning_Date: 1960
              Ending_Date: 1996
        Source_Contribution: figure, map
      Process_Step:
        Process_Description:
          The length and orientation of seismic reflection line P-2 is inferred from
          the center of a circle shown on a small-scale index map (Figure 3) from Heigold
          and Kolata (1993).

          Lines AB, AD, BC, DG, EF, FH, IH, and KJ were digitized from the locations
          of shotpoints from a large folded map in Rudman (1963).

          Lines Posey-White Co N and S and Gallatin Co were digitized from Figure 2
          in Bear and others (1997).

          The Barnes Creek line was plotted from latitude and longitude data provided
          by John L. Sexton (written communication, 1995).

          Latitude and longitude data for the COCORP lines, IL-1 and IN-1, were
          downloaded from Cornell University's website (http:www.geo.cornell.edu/).

          Lines Webster Co, Union Co., Pope Co., and Muhlenberg Co. were derived
          from figures in Bertagne and Leising (1991).

          The Grayville, New Harmony, and Hamilton Co. line locations were digitized
          from Figure 3 of Sexton and others (1986).

          Lines RS1 to RS3 were digitized from data that was transferred from Figure
          2 of Rene and Stanonis (1995), onto 7 1/2' topographic maps.

          Lines HO5 to HO9 were digitized from Figure 12-1 in Heigold and Oltz (1991).

          The Hicks Do,e line was digitized from an index map of Potter and others
          (1995), and then adjusted by eye.

          reflec_all was clipped to create reflec.

        Process_Date: 19951026
        Process_Time: 1431

  Spatial_Data_Organization_Information:
    Direct_Spatial_Reference_Method: Vector
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: Point
        Point_and_Vector_Object_Count: 0
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: String
        Point_and_Vector_Object_Count: 29
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
        Point_and_Vector_Object_Count: 0
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Geographic:
        Geographic_Coordinate_Units: Decimal Degrees
      Geodetic_Model:
        Horizontal_Datum_Name: Unknown
        Ellipsoid_Name: Clarke 1866
        Semi-major_Axis: 6378206.4
        Denominator_of_Flattening_Ratio: 294.98
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: REFLEC.AAT
        Entity_Type_Definition: code for line name used on map and reference
        Entity_Type_Definition_Source: Rhea
      Attribute:
        Attribute_Label: LINE
        Attribute_Definition: code for line name
        Attribute_Definition_Source: Rhea
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: (blank)
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: AA'
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: AD
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Barnes Crk
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: DG
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: E-W Tie Li
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: EF
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: FH
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Grayville
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: H05
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: H06
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: H07
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: H08
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: H09
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Hamilton C
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: IH
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: KJ
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Muhlenburg
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: New Harmon
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: P-2
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Pope Co.,
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: RS1
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: RS2
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: RS3
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Union Co.,
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Webster Co
            Enumerated_Domain_Value_Definition: relection line
            Enumerated_Domain_Value_Definition_Source: Diehl
      Attribute:
        Attribute_Label: REF
        Attribute_Definition: code for reference
        Attribute_Definition_Source: Rhea
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: (blank)
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Bertagne and Leissing 91
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Heigold and Oltz 91
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Heigold&Kolata 93
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Rene and Stanonis 95
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Rudman 60, 63
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Rudman 63
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sexton et al. 86
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sexton, 1995
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: Sexton, 1995
            Enumerated_Domain_Value_Definition: year and author
            Enumerated_Domain_Value_Definition_Source: Diehl
  Distribution_Information:
    Distributor:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Susan Rhea
          Contact_Organization: US Geological Survey
        Contact_Position: Geophysicist
        Contact_Address:
          Address_Type: mailing address
          Address:
            USGS Mail Stop 966
            Box 25046, Federal Center
          City: Denver
          State_or_Province: CO
          Postal_Code: 80225-0046
          Country: USA
        Contact_Voice_Telephone: 303-273-8639
        Contact_Facsimile_Telephone: 303-273-8600
        Contact_Electronic_Mail_Address: rhea@usgs.gov
        Contact_Instructions: Email is the best way to make contact.
    Resource_Description: USGS Open-File Report 97-0681
    Distribution_Liability:
      This report is preliminary and has not been reviewed for
      conformity with U.S. Geological Survey editorial standards
      and stratigraphic nomenclature. Any use of trade names is
      for descriptive purposes only and does not imply endorsement
      by the USGS.
    Technical_Prerequisites: ARC/INFO version 7.0.3 or later or ArcView 3.0 or later
    Standard_Order_Process:
      Digital_Form:
        Digital_Transfer_Information:
          Format_Name: ARCE
          Format_Version_Number: 7.0.3
          Format_Information_Content: Each coverage contains isoseismal data for one event (two for i187609)
          File_Decompression_Technique: Files may be compressed with gzip; use gzip -d or gunzip to uncompress.
        Digital_Transfer_Option:
          Online_Option:
            Computer_Contact_Information:
              Network_Address:
                Network_Resource_Name: http://pubs.usgs.gov/of/1997/ofr-97-0681//e00_files/reflec.e00
            Online_Computer_and_Operating_System: Data General AViiON 6220 running DG/UX 5.4R3.10 (Unix)
      Fees: none
  Metadata_Reference_Information:
    Metadata_Date: 19980506
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Susan Rhea
          Contact_Organization: US Geological Survey
        Contact_Position: Geophysicist
        Contact_Address:
          Address_Type: mailing address
          Address: MS966, Box 25046, Federal Center
          City: Denver
          State_or_Province: CO
          Postal_Code: 80225
          Country: USA
        Contact_Voice_Telephone: 303-273-8639
        Contact_Facsimile_Telephone: 303-273-8600
        Contact_Electronic_Mail_Address: rhea@usgs.gov
        Contact_Instructions: email is the best way to make contact
    Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998