USGS CMG W-18-77-AR Metadata

Description of Survey Area  00018: Beaufort Sea Phase II 1977

    Date of Survey              1977

    Tape Version Identifier     SEG-P1


    Client Name                 WesternGeco Multiclient

    Coordinate Location         Vessel Locations

    Spheroid Definition-Survey  Clarke 1866 6378206.400 294.978698

    Spheroid Def. - Post Plot   Clarke 1866 6378206.400 294.978698

    Geodetic Datum - Survey     NAD 27

    Geodetic Datum - Post Plot  NAD 27


    Datum Shifts

     Projection Type            Transverse Mercator

     Grid System                UTM Zone 6

     Grid Units                 Meters

     Central Meridian           147 0 0.000W

     Grid Origin                  0 0 0.000N147 0 0.000W

     Grid Coordinates at Origin   500000.00E       0.00N

     Scale Factor               0.9996000000

     Scale Factor Defined at      0 0 0.000N147 0 0.000W


There is a problem with the navigation file not matching
the SEG-Y data.
We are aware of a discrepancy between the seismic data and
the shotpoint navigation.
WesternGeco has reviewed their digital database,
and have concluded that they cannot provide navigation.
We are hopeful that we can obtain the navigation from MMS,
but have not been able yet to locate it yet.
Obviously this would be a valuable survey if the navigation
were available.
We will continue our efforts to acquire it.