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What does this data set describe?

Title:
Geophysical data of field activity W-18-77-AR in Beaufort Sea from 01/01/1977 to 02/15/1977
Abstract:
WesternGeco. Geophysical data (navigation, seismic) of field activity W-18-77-AR in Beaufort Sea from 01/01/1977 to 02/15/1977, <http://walrus.wr.usgs.gov/infobank/w/w1877ar/html/w-18-77-ar.meta.html>.
Supplemental_Information:

Equipment Used -
navigation data directory exists
seismic data directory exists
Notes -
Description of Survey Area 00018: Beaufort Sea Phase II 1977<br> <p>
Client Name WesternGeco Multiclient<br>
Coordinate Location Vessel Locations<br>
Spheroid Definition-Survey Clarke 1866 6378206.400 294.978698<br>
Spheroid Def. - Post Plot Clarke 1866 6378206.400 294.978698<br>
Geodetic Datum - Survey NAD 27<br>
Geodetic Datum - Post Plot NAD 27<br>
<p>
Datum Shifts<br>
Projection Type Transverse Mercator<br>
Grid System UTM Zone 6<br>
Grid Units Meters<br>
Central Meridian 147 0 0.000W<br>
Grid Origin 0 0 0.000N147 0 0.000W<br>
Grid Coordinates at Origin 500000.00E 0.00N<br>
Scale Factor 0.9996000000<br>
Scale Factor Defined at 0 0 0.000N147 0 0.000W<br>
<p>
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.

Similar information is available for thousands of other USGS/CMG-related Activities.
If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... <http://walrus.wr.usgs.gov/infobank/>
This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.).
  1. How should this data set be cited?

    U.S. Geological Survey (USGS) <http://www.usgs.gov/>, Coastal and Marine Geology Program (CMGP) <http://marine.usgs.gov/>, 20131101, Geophysical data of field activity W-18-77-AR in Beaufort Sea from 01/01/1977 to 02/15/1977: U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -153.35219
    East_Bounding_Coordinate: -147.53052
    North_Bounding_Coordinate: 71.68211
    South_Bounding_Coordinate: 70.51069

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 01-Jan-1977
    Ending_Date: 15-Feb-1977
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference: Beaufort Sea
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point

    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 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values


  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Navigation with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/nav.html>
    Entity_and_Attribute_Overview:
    Seismic Shots with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/seis.html>


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>


Why was the data set created?

These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.


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: 05-Jan-2007 (process 1 of 1)
    Navigation Data
    09/25/2006 carolyn /infobank/w/w1877ar/seis/w-18-77-ar.411_mcs
    /infobank/programs/time/lines2times/lines2times
    Seismic FFID/Shot/CDP data
    from /we/ray/410files/w1877ar_sw.410 on 26-Sep-2006
    times are fake
           1         2         3         4         5         6         7
    3456789012345678901234567890123456789012345678901234567890123456789012345678
    
    

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

  3. What similar or related data should the user be aware of?

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Unknown, USGS/CMG Information Bank <http://walrus.wr.usgs.gov/infobank/>: U.S. Geological Survey (USGS) <http://www.usgs.gov> Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.

    Online Links:


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Identified as best available version.

  2. How accurate are the geographic locations?

    Unspecified

  3. How accurate are the heights or depths?

    Unspecified

  4. Where are the gaps in the data? What is missing?

    Start and end date/times of data

    Navigation Data (w-18-77-ar.053 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197701010000001    197701010002513
    197701020000001    197701020002414
    197701030000001    197701030003270
    197701040000001    197701040003189
    197701050000001    197701050003282
    197701060000001    197701060003174
    197701070000001    197701070002225
    197701080000001    197701080002348
    197701090000001    197701090002356
    197701100000001    197701100002363
    197701110000001    197701110009134
    197701120000001    197701120002444
    197701130000001    197701130002484
    197701140000001    197701140002481
    197701150000001    197701150001438
    197701160000001    197701160002497
    197701170000001    197701170003014
    197701180000001    197701180002014
    197701190000001    197701190002099
    197701200000001    197701200002105
    197701210000001    197701210002084
    197701220000001    197701220002153
    197701230000001    197701230002252
    197701240000001    197701240002576
    197701250000001    197701250002108
    197701260000001    197701260002362
    197701270000001    197701270003108
    197701280000001    197701280003170
    197701290000001    197701290002303
    197701300000001    197701300002303
    197701310000001    197701310002219
    197702010000001    197702010002315
    197702020000001    197702020002336
    197702030000001    197702030002372
    197702040000001    197702040002291
    197702050000001    197702050002190
    197702060000001    197702060002164
    197702070000001    197702070002043
    197702080000001    197702080002057
    197702090000001    197702090002128
    197702100000001    197702100002033
    197702110000001    197702110002279
    197702120000001    197702120004173
    197702130000001    197702130000300
    197702140000001    197702140002216
    197702150000001    197702150005423
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (w-18-77-ar.411_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197701010000001    197701010002513
    197701020000001    197701020002414
    197701030000001    197701030003270
    197701040000001    197701040003189
    197701050000001    197701050003282
    197701060000001    197701060003174
    197701070000001    197701070002225
    197701080000001    197701080002348
    197701090000001    197701090002356
    197701100000001    197701100002363
    197701110000001    197701110009134
    197701120000001    197701120002444
    197701130000001    197701130002484
    197701140000001    197701140002481
    197701150000001    197701150001438
    197701160000001    197701160002497
    197701170000001    197701170003014
    197701180000001    197701180002014
    197701190000001    197701190002099
    197701200000001    197701200002105
    197701210000001    197701210002084
    197701220000001    197701220002153
    197701230000001    197701230002252
    197701240000001    197701240002576
    197701250000001    197701250002108
    197701260000001    197701260002362
    197701270000001    197701270003108
    197701280000001    197701280003170
    197701290000001    197701290002303
    197701300000001    197701300002303
    197701310000001    197701310002219
    197702010000001    197702010002315
    197702020000001    197702020002336
    197702030000001    197702030002372
    197702040000001    197702040002291
    197702050000001    197702050002190
    197702060000001    197702060002164
    197702070000001    197702070002043
    197702080000001    197702080002057
    197702090000001    197702090002128
    197702100000001    197702100002033
    197702110000001    197702110002279
    197702120000001    197702120004173
    197702130000001    197702130000300
    197702140000001    197702140002216
    197702150000001    197702150005423
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    

  5. How consistent are the relationships among the observations, including topology?

    Unspecified


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
Physical materials are under controlled on-site access.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Use_Constraints:
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
This information is not intended for navigational 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)

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

  2. What's the catalog number I need to order this data set?

    Downloadable Data W-18-77-AR data set <http://walrus.wr.usgs.gov/infobank/w/w1877ar/html/w-18-77-ar.meta.html>

  3. What legal disclaimers am I supposed to read?

    Please recognize the U.S. Geological Survey (USGS) as the source of this information.
    Physical materials are under controlled on-site access.
    Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
    This information is not intended for navigational purposes.
    Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

  4. How can I download or order the data?

    • Availability in digital form:

Data format: ASCII Size: 6.1
Network links: <http://walrus.wr.usgs.gov/infobank/w/w1877ar/html/w-18-77-ar.nav.html>

Data format: ASCII Size: 6.1
Network links: <http://walrus.wr.usgs.gov/infobank/w/w1877ar/html/w-18-77-ar.seis.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 01-Nov-2013
    Metadata author:
    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

    Metadata standard:
    FGDC Content Standards for Digital Geospatial Metadata <http://www.fgdc.gov/> (FGDC-STD-001-1998 <http://www.its.nbs.gov/nbs/meta/meta.html>)


    Generated by mp version 2.9.13 on Fri Nov 1 14:09:37 2013