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What does this data set describe?

Title:
Geophysical data of field activity W-31-81-SC in Offshore California San Diego from 01/01/1981 to 02/27/1981
Abstract:
WesternGeco. Geophysical data (navigation, seismic) of field activity W-31-81-SC in Offshore California San Diego from 01/01/1981 to 02/27/1981, <http://walrus.wr.usgs.gov/infobank/w/w3181sc/html/w-31-81-sc.meta.html>.
Supplemental_Information:

Equipment Used -
navigation data directory exists
seismic data directory exists
Notes -
Description of Survey Area 131: Offshoe Ca-San Diego 1981<br> <p>
Client Name WesternGeco Multiclient<br>
Coordinate Location Antenna Locations<br>
Spheroid Definition - Surveyclarke 1866) 6378206.400 294.9786985<br>
Spheroid Def. - Post Plot Clarke 1866) 6378206.400 294.9786985<br>
Geodetic Datum - Survey NAD 27<p>
Geodetic Datum - Post Plot NAD 27<p>
<p>
Datum Shifts<br>
Projection Type Lambert<br>
Grid System California Zone 6<br>
Grid Units U.S. Survey Feet<p>
Standard Parallels 3247 0.000N 3353 0.000N<br>
Central Meridian 11615 0.000W<br>
Grid Origin 3210 0.000N11615 0.000W<br>
Grid Coordinates at Origin 2000000.00E 0.00N<p>
<p>

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-31-81-SC in Offshore California San Diego from 01/01/1981 to 02/27/1981: 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: -118.02862
    East_Bounding_Coordinate: -117.17381
    North_Bounding_Coordinate: 33.52374
    South_Bounding_Coordinate: 32.41964

  3. What does it look like?

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

    Beginning_Date: 01-Jan-1981
    Ending_Date: 27-Feb-1981
    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: Offshore California San Diego
      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: 08-Jul-2004 (process 1 of 1)
    Navigation Data
    
    07/08/2004 mosier name change to w-31-81-sc.051
    03/05/2004 clint w-31-81-sc.062
    /infobank/programs/time/lines2times/l2t
    Global positioning system (GPS) data
    Times are faked.
    
    Input was...
    02/02/2004 clint /infobank/w/w3181sc/nav/w-31-81-sc.061
    /infobank/programs/time/lines2times/lines2times
    Global positioning system (GPS) data
    times are fake
    
    year,day,hr,min,sec,tenths,lat,long,line,shot,easting,northing,depth
    

    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-31-81-sc.051 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198101010000001    198101010002052
    198101020000001    198101020000436
    198101030000001    198101030002231
    198101040000001    198101040003101
    198101050000001    198101050002126
    198101060000001    198101060004331
    198101070000001    198101070002131
    198101080000001    198101080005226
    198101090000001    198101090001101
    198101100000001    198101100002176
    198101110000001    198101110006211
    198101120000001    198101120002096
    198101130000001    198101130008076
    198101140000001    198101140002051
    198101150000001    198101150008037
    198101160000001    198101160002101
    198101170000001    198101170003276
    198101180000001    198101180005056
    198101190000001    198101190002076
    198101200000001    198101200004476
    198101210000001    198101210003321
    198101220000001    198101220002176
    198101230000001    198101230004251
    198101240000001    198101240003401
    198101250000001    198101250002101
    198101260000001    198101260003551
    198101270000001    198101270004211
    198101280000001    198101280002216
    198101290000001    198101290004461
    198101300000001    198101300001413
    198101310000001    198101310004005
    198102010000001    198102010002191
    198102020000001    198102020003276
    198102030000001    198102030000506
    198102040000001    198102040001446
    198102050000001    198102050002086
    198102060000001    198102060002101
    198102070000001    198102070003126
    198102080000001    198102080002041
    198102090000001    198102090002126
    198102100000001    198102100002091
    198102110000001    198102110002000
    198102120000001    198102120000526
    198102130000001    198102130001136
    198102140000001    198102140001436
    198102150000001    198102150002101
    198102160000001    198102160000536
    198102170000001    198102170001331
    198102180000001    198102180002301
    198102190000001    198102190001351
    198102200000001    198102200001318
    198102210000001    198102210001261
    198102220000001    198102220001101
    198102230000001    198102230002021
    198102240000001    198102240002151
    198102250000001    198102250002441
    198102260000001    198102260001351
    198102270000001    198102270001301
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (w-31-81-sc.420_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198101010000001    198101010002052
    198101020000001    198101020000436
    198101030000001    198101030002231
    198101040000001    198101040003101
    198101050000001    198101050002126
    198101060000001    198101060004331
    198101070000001    198101070002131
    198101080000001    198101080005226
    198101090000001    198101090001101
    198101100000001    198101100002176
    198101110000001    198101110006211
    198101120000001    198101120002096
    198101130000001    198101130008076
    198101140000001    198101140002051
    198101150000001    198101150008037
    198101160000001    198101160002101
    198101170000001    198101170003276
    198101180000001    198101180005056
    198101190000001    198101190002076
    198101200000001    198101200004476
    198101210000001    198101210003321
    198101220000001    198101220002176
    198101230000001    198101230004251
    198101240000001    198101240003401
    198101250000001    198101250002101
    198101260000001    198101260003551
    198101270000001    198101270004211
    198101280000001    198101280002216
    198101290000001    198101290004461
    198101300000001    198101300001413
    198101310000001    198101310004005
    198102010000001    198102010002191
    198102020000001    198102020003276
    198102030000001    198102030000506
    198102040000001    198102040001446
    198102050000001    198102050002086
    198102060000001    198102060002101
    198102070000001    198102070003126
    198102080000001    198102080002041
    198102090000001    198102090002126
    198102100000001    198102100002091
    198102110000001    198102110002000
    198102120000001    198102120000526
    198102130000001    198102130001136
    198102140000001    198102140001436
    198102150000001    198102150002101
    198102160000001    198102160000536
    198102170000001    198102170001331
    198102180000001    198102180002301
    198102190000001    198102190001351
    198102200000001    198102200001318
    198102210000001    198102210001261
    198102220000001    198102220001101
    198102230000001    198102230002021
    198102240000001    198102240002151
    198102250000001    198102250002441
    198102260000001    198102260001351
    198102270000001    198102270001301
    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-31-81-SC data set <http://walrus.wr.usgs.gov/infobank/w/w3181sc/html/w-31-81-sc.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: 9.3
Network links: <http://walrus.wr.usgs.gov/infobank/w/w3181sc/html/w-31-81-sc.nav.html>

Data format: ASCII Size: 9.3
Network links: <http://walrus.wr.usgs.gov/infobank/w/w3181sc/html/w-31-81-sc.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 14:12:28 2013