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What does this data set describe?

Title:
Geophysical data of field activity UGEOLEG_1 (U-1-71-GM) in Bay of Campeche, Gulf of Mexico from 05/27/1971 to 06/21/1971
Abstract:
United States Geological Survey, Corpus Christi, Texas,United States Geological Survey, Menlo Park, California. Chief Scientist: George Moore. Geophysical data (transitsatellite, 3dot5khz, sonobuoy, magnetics, gravity, sparker) of field activity UGEOLEG_1 (U-1-71-GM) in Bay of Campeche, Gulf of Mexico from 05/27/1971 to 06/21/1971, <http://walrus.wr.usgs.gov/infobank/u/u171gm/html/u-1-71-gm.meta.html>.
Supplemental_Information:

Equipment Used -
transitsatellite
3dot5khz 3.5 khz bathymetry
sonobuoy
magnetics magnetometer
gravity shipboard gravity
sparker
Publications -
Moore, G.W., 1972, Acoustic Reflection Profiles, Bay of Campeche, International Decade of Ocean Exploration, U.S. Geological Survey, USGS-GD-71-002. (See analog materials list)

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/>, 20131030, Geophysical data of field activity UGEOLEG_1 (U-1-71-GM) in Bay of Campeche, Gulf of Mexico from 05/27/1971 to 06/21/1971: 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: -96.88830
    East_Bounding_Coordinate: -92.03830
    North_Bounding_Coordinate: 26.43570
    South_Bounding_Coordinate: 18.48000

  3. What does it look like?

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

    Beginning_Date: 27-May-1971
    Ending_Date: 21-Jun-1971
    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: Bay of Campeche, Gulf of Mexico
      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:
    Bathymetry with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/bath.html>
    Entity_and_Attribute_Overview:
    Gravity with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/grav.html>
    Entity_and_Attribute_Overview:
    Magnetics with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/mag.html>
    Entity_and_Attribute_Overview:
    Navigation with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/nav.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?

    George Moore (Chief Scientist, USGS Western Region); Erk Reimnitz (Scientist, USGS Western Region); Dick Tagg (Scientist, USGS); Steve Wolf (Scientist, USGS Western Region); Byron Ruppel (Scientist, USGS Western Region); H.L. Krivoy (Scientist, USGS Western Region); J.W. Lee (Scientist, USGS Western Region); F.A. Lybolt (Scientist, USGS Western Region); Luis del Castillo (Scientist, Nat. U Mexico); M.A. Calderon (Scientist, Nat. U Mexico); Gustavo Calderon (Scientist, Oceano Comm Mexico); Leonardo Garcia (Scientist, Mexican Institute of Petroleum)

  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: 15-Dec-1995 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    

    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>

    Date: 31-Oct-1998 (process 2 of 4)
    Gravity Data
    10/31/1998  /tiger/u/u171gm/grav/u-1-71-gm.161_052
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    Input was...
    Converted to time format with year at start.
    
    time, lat, long, time(sec) to nearest nav fix, data values
    

    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>

    Date: 20-Jun-2012 (process 3 of 4)
    Magnetics Data
    06/20/2012 carolyn u-1-71-gm.221_052
    
    Reprocessed using subroutines from Susan Macmillan's
    IGRF SYNTHESIS PROGRAM <http://www.ngdc.noaa.gov/IAGA/vmod/igrf11.f>
    with IGRF-11 coeffiecients integrated into the source code.
    /infobank/programs/mag/magred11/magred11.for
    Using geodetic coordinate system (Earth shape approximated by spheriod)
    with altitude 0.0 km (for sea level).
    
    Input was...
    10/31/1998  /tiger/u/u171gm/mag/u-1-71-gm.201_052
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    Converted to time format with year at start.
    
    time, lat, long, time(sec) to nearest nav fix, data values
    

    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>

    Date: 31-Oct-1998 (process 4 of 4)
    Bathymetry Data
    10/31/1998  /tiger/u/u171gm/bath/u-1-71-gm.335_052
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    02/24/86 BECKIE DISK$USERDISK:[CLINT.BECKIE]U171GM.335;
    DRB0:[DRS.BAT]BATRED.EXE;1
    Velocity of sound assumed in reduction was 1500m/sec
    2-way traveltime.
    
    Input was...
    Converted to time format with year at start.
    
    time, lat, long, time(sec) to nearest nav fix, data values
    

    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:

    Other_Citation_Details:
    Moore, G.W., 1972, Acoustic Reflection Profiles, Bay of Campeche, International Decade of Ocean Exploration, U.S. Geological Survey, USGS-GD-71-002. (See analog materials list)


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 (u-1-71-gm.052 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197105271500000    197105281916000
    197105282001000    197105282001000
    197105282031000    197105311055000
    197106022240000    197106071205000
    197106071400000    197106090000000
    197106090110000    197106111925000
    197106112305000    197106130935000
    197106131100000    197106172010000
    197106192340000    197106210050000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (u-1-71-gm.161_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197105271500000    197105271500000
    197105271515000    197105271515000
    197105271530000    197105271530000
    197105271600000    197105271600000
    197105271615000    197105271615000
    197105271630000    197105271630000
    197105271645000    197105271645000
    197105271700000    197105271700000
    197105271715000    197105271715000
    197105271730000    197105271730000
    197105271745000    197105271745000
    197105271800000    197105271800000
    197105271815000    197105271815000
    197105271830000    197105271830000
    197105271845000    197105271845000
    197105271900000    197105271900000
    197105271915000    197105271915000
    197105271930000    197105271930000
    197105271945000    197105271945000
    197105272015000    197105272015000
    197105272030000    197105272030000
    197105272045000    197105272045000
    197105272100000    197105272100000
    197105272115000    197105272115000
    197105272130000    197105272130000
    197105272145000    197105272145000
    197105272200000    197105272200000
    197105272230000    197105272230000
    197105272245000    197105272245000
    197105272300000    197105272300000
    197105272315000    197105272315000
    197105272331000    197105272331000
    197105272346000    197105272346000
    197105280001000    197105280001000
    197105280016000    197105280016000
    197105280031000    197105280031000
    197105280046000    197105280046000
    197105280101000    197105280101000
    197105280116000    197105280116000
    197105280131000    197105280131000
    197105280146000    197105280146000
    197105280201000    197105280201000
    197105280216000    197105280216000
    197105280231000    197105280231000
    197105280246000    197105280246000
    197105280316000    197105280316000
    197105280331000    197105280331000
    197105280346000    197105280346000
    197105280401000    197105280401000
    197105280416000    197105280416000
    197105280431000    197105280431000
    197105280446000    197105280446000
    197105280501000    197105280501000
    197105280516000    197105280516000
    197105280531000    197105280531000
    197105280546000    197105280546000
    197105280601000    197105280601000
    197105280616000    197105280616000
    197105280631000    197105280631000
    197105280646000    197105280646000
    197105280701000    197105280701000
    197105280716000    197105280716000
    197105280731000    197105280731000
    197105280746000    197105280746000
    197105280801000    197105280801000
    197105280816000    197105280816000
    197105280831000    197105280831000
    197105280846000    197105280846000
    197105280901000    197105280901000
    197105280916000    197105280916000
    197105280931000    197105280931000
    197105280946000    197105280946000
    197105281001000    197105281001000
    197105281016000    197105281016000
    197105281031000    197105281031000
    197105281046000    197105281046000
    197105281101000    197105281101000
    197105281116000    197105281116000
    197105281131000    197105281131000
    197105281146000    197105281146000
    197105281201000    197105281201000
    197105281216000    197105281216000
    197105281231000    197105281231000
    197105281301000    197105281301000
    197105281316000    197105281316000
    197105281331000    197105281331000
    197105281346000    197105281346000
    197105281401000    197105281401000
    197105281416000    197105281416000
    197105281431000    197105281431000
    197105281446000    197105281446000
    197105281501000    197105281501000
    197105281516000    197105281516000
    197105281531000    197105281531000
    197105281546000    197105281546000
    197105281601000    197105281601000
    197105281616000    197105281616000
    197105281631000    197105281631000
    197105281646000    197105281646000
    197105281701000    197105281701000
    197105281716000    197105281716000
    197105281731000    197105281731000
    197105281746000    197105281746000
    197105281801000    197105281801000
    197105281816000    197105281816000
    197105281831000    197105281831000
    197105281846000    197105281846000
    197105281901000    197105281901000
    197105281916000    197105281916000
    197105282001000    197105282001000
    197105282031000    197105282031000
    197105282045000    197105282045000
    197105282101000    197105282101000
    197105282116000    197105282116000
    197105282131000    197105282131000
    197105282146000    197105282146000
    197105282201000    197105282201000
    197105282216000    197105282216000
    197105282235000    197105290950000
    197105291000000    197105291010000
    197105291020000    197105291050000
    197105291100000    197105301115000
    197105301130000    197105310830000
    197105310850000    197105311050000
    197106022240000    197106031040000
    197106031055000    197106032220000
    197106032235000    197106032240000
    197106032250000    197106041015000
    197106041040000    197106042010000
    197106042020000    197106042110000
    197106042125000    197106051430000
    197106051440000    197106051515000
    197106051530000    197106060010000
    197106060030000    197106061215000
    197106061230000    197106061355000
    197106061405000    197106070655000
    197106070710000    197106070710000
    197106070720000    197106071205000
    197106071410000    197106080200000
    197106080220000    197106080320000
    197106080335000    197106080425000
    197106080435000    197106081955000
    197106082005000    197106082045000
    197106082100000    197106090000000
    197106090110000    197106091000000
    197106091020000    197106100325000
    197106100340000    197106100845000
    197106100855000    197106101540000
    197106101550000    197106102005000
    197106102015000    197106110105000
    197106110115000    197106110515000
    197106110525000    197106110955000
    197106111005000    197106111925000
    197106112310000    197106120805000
    197106120815000    197106121405000
    197106121420000    197106130815000
    197106130825000    197106130835000
    197106130845000    197106130935000
    197106131110000    197106132330000
    197106132345000    197106142210000
    197106142220000    197106150825000
    197106150835000    197106152320000
    197106152330000    197106152345000
    197106152355000    197106160015000
    197106160030000    197106160635000
    197106160650000    197106161135000
    197106161155000    197106161830000
    197106161840000    197106171615000
    197106171625000    197106171810000
    197106171820000    197106172010000
    197106192350000    197106200000000
    197106200020000    197106210050000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (u-1-71-gm.221_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197105271500000    197105271730000
    197105271800000    197105272245000
    197105280000000    197105280015000
    197105280045000    197105281100000
    197105281131000    197105281230000
    197105281251000    197105291230000
    197105291251000    197105291330000
    197105291400000    197105301145000
    197105301215000    197105302105000
    197105302130000    197105311045000
    197106061300000    197106070430000
    197106070500000    197106071030000
    197106071100000    197106071230000
    197106071251000    197106071930000
    197106072000000    197106072230000
    197106072301000    197106081015000
    197106081036000    197106082030000
    197106082100000    197106082200000
    197106082233000    197106091045000
    197106100300000    197106171619180
    197106200130000    197106201615000
    197106201645000    197106210045000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (u-1-71-gm.335_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197105271500000    197105280630000
    197105280700000    197105291130000
    197105291200000    197105291930000
    197105292000000    197105292000000
    197105292030000    197105292230000
    197105292300000    197105292330000
    197105300000000    197105300700000
    197105300730000    197105311045000
    197106021700000    197106021800000
    197106021900000    197106021900000
    197106021945000    197106022000000
    197106022030000    197106042000000
    197106042100000    197106061215000
    197106061245000    197106080200000
    197106080245000    197106080315000
    197106080345000    197106091130000
    197106091200000    197106091200000
    197106091230000    197106091430000
    197106091500000    197106091500000
    197106091545000    197106091600000
    197106091630000    197106092015000
    197106092045000    197106092100000
    197106092130000    197106092130000
    197106092200000    197106100045000
    197106100300000    197106130315000
    197106130345000    197106132330000
    197106140000000    197106140000000
    197106140100000    197106171730000
    197106200130000    197106200745000
    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 UGEOLEG_1 (U-1-71-GM) data set <http://walrus.wr.usgs.gov/infobank/u/u171gm/html/u-1-71-gm.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: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/u/u171gm/html/u-1-71-gm.nav.html>

Data format: ASCII Size: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/u/u171gm/html/u-1-71-gm.grav.html>

Data format: ASCII Size: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/u/u171gm/html/u-1-71-gm.mag.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/u/u171gm/html/u-1-71-gm.bath.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 30-Oct-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>)


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