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What does this data set describe?

Title:
Geophysical data of field activity 71005 (U-5-71-AF) in Continental Margin Liberia from 10/30/1971 to 11/20/1971
Abstract:
United States Geological Survey, Woods Hole, Massachusetts. Chief Scientist: John Schlee. Geophysical data (bathymetry, gravity, magnetics) of field activity 71005 (U-5-71-AF) in Continental Margin Liberia from 10/30/1971 to 11/20/1971, <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.meta.html>.
Supplemental_Information:

Equipment Used -
bathymetry
gravity
magnetics
Publications -
U571AF Cruise Report exists at Woods Hole

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 71005 (U-5-71-AF) in Continental Margin Liberia from 10/30/1971 to 11/20/1971: 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: -12.22040
    East_Bounding_Coordinate: -7.29000
    North_Bounding_Coordinate: 6.79120
    South_Bounding_Coordinate: 3.19460

  3. What does it look like?

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

    Beginning_Date: 30-Oct-1971
    Ending_Date: 20-Nov-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: Continental Margin Liberia
      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?

    John Schlee (Chief Scientist, USGS Woods Hole)

  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.
    
    02/11/86 KAYE DUA0:[DATA.U571AF.N]U571AF.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    

    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/u571af/grav/u-5-71-af.160_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    03/07/86 BARB DUA0:[DATA.U571AF]U571AF.160
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    Input was...
    Converted to time format with year at start.
    
    02/11/86 KAYE DUA0:[DATA.U571AF.N]U571AF.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    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-5-71-af.220_050
    
    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/u571af/mag/u-5-71-af.200_050
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    03/10/86 CAROLYN DRS$DATA:[U571AF.M]U571AF.200;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    was U571AF.220 on 71BKUP
    
    03/22/85 CAROLYN USR$DISK:[DRS.DATA.U5.M]U571AF.220;
    USR$DISK:[DRS.REFMT]REFORMAT.EXE;3
    
    Converted to time format with year at start.
    
    02/11/86 KAYE DUA0:[DATA.U571AF.N]U571AF.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    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/u571af/bath/u-5-71-af.325_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    03/07/86 BECKIE DUA0:[DATA.U571AF]U571AF.325;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    Input was...
    Converted to time format with year at start.
    
    02/11/86 KAYE DUA0:[DATA.U571AF.N]U571AF.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    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: U571AF Cruise Report exists at Woods Hole


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-5-71-af.050 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197110300055000    197110310500000
    197110310510180    197110310510180
    197110310520420    197110310520420
    197110310531060    197110310531060
    197110310541300    197110310541300
    197110310550000    197111011111360
    197111011120000    197111011120000
    197111011130240    197111012025000
    197111012030420    197111021130000
    197111021910000    197111041445000
    197111041451240    197111060745000
    197111060750360    197111060750360
    197111060800000    197111071400000
    197111072345000    197111090750000
    197111120121120    197111120121120
    197111120130000    197111121335000
    197111121340420    197111121340420
    197111121351000    197111121351000
    197111121401240    197111121401240
    197111121411420    197111121411420
    197111121420000    197111121420000
    197111121430180    197111121430180
    197111121440360    197111121440360
    197111121450540    197111121450540
    197111121500000    197111121515000
    197111121521480    197111121521480
    197111121530000    197111130945000
    197111130950240    197111130950240
    197111131000420    197111131110420
    197111131121000    197111131121000
    197111131131180    197111131131180
    197111131141360    197111131141360
    197111131151540    197111131151540
    197111131200120    197111132101180
    197111132111420    197111151150420
    197111151201000    197111151201000
    197111151210000    197111152201540
    197111152210060    197111162200060
    197111181515000    197111191431420
    197111191805000    197111200600000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (u-5-71-af.160_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197110300305000    197110310150000
    197110310200000    197110310310000
    197110310350000    197110310455000
    197110310555000    197110310905000
    197110310945000    197110311035000
    197110311055000    197110311210000
    197110311225000    197110311635000
    197110311645000    197110311820000
    197110311830000    197110312000000
    197110312015000    197110312255000
    197110312315000    197111010215000
    197111010225000    197111010320000
    197111010330000    197111010555000
    197111010605000    197111010935000
    197111010945000    197111011010000
    197111011030000    197111011110000
    197111011135000    197111011255000
    197111011325000    197111012025000
    197111012035000    197111012315000
    197111012325000    197111012340000
    197111012350000    197111020205000
    197111020215000    197111020315000
    197111020325000    197111021130000
    197111021925000    197111030715000
    197111030725000    197111031955000
    197111032005000    197111041445000
    197111041505000    197111052115000
    197111052140000    197111052355000
    197111060005000    197111060745000
    197111060805000    197111060900000
    197111060910000    197111062355000
    197111070005000    197111071400000
    197111080005000    197111090250000
    197111090300000    197111090450000
    197111090505000    197111090745000
    197111120130000    197111120515000
    197111120525000    197111120825000
    197111120835000    197111121335000
    197111121500000    197111121515000
    197111121530000    197111122100000
    197111122115000    197111122210000
    197111122220000    197111122235000
    197111122245000    197111130125000
    197111130140000    197111130840000
    197111130850000    197111130945000
    197111131005000    197111131105000
    197111131210000    197111132010000
    197111132020000    197111132100000
    197111132115000    197111141200000
    197111141210000    197111151145000
    197111151215000    197111152200000
    197111152215000    197111160535000
    197111160545000    197111160645000
    197111160655000    197111161435000
    197111161445000    197111161745000
    197111161755000    197111162155000
    197111181515000    197111182205000
    197111182215000    197111190320000
    197111190330000    197111191425000
    197111191805000    197111200020000
    197111200035000    197111200420000
    197111200430000    197111200600000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (u-5-71-af.220_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197110301220000    197110310820120
    197110310841060    197110311030120
    197110311051120    197110311221000
    197110311310300    197110311400420
    197110311421420    197110311541240
    197110311611000    197111010020420
    197111010041360    197111011201420
    197111011351060    197111021040120
    197111021911120    197111022220360
    197111022241000    197111030021060
    197111030041300    197111030100000
    197111030120240    197111030331060
    197111030351300    197111030511060
    197111030531300    197111040941120
    197111041001480    197111041400060
    197111041420480    197111041550420
    197111041611120    197111050020000
    197111050040420    197111062001300
    197111062021540    197111070020300
    197111070041180    197111071221060
    197111072351240    197111080400240
    197111080420540    197111080720360
    197111080741120    197111080920060
    197111080940420    197111081121420
    197111081400240    197111081431180
    197111081451540    197111081651000
    197111081721420    197111090250480
    197111090510360    197111090741300
    197111120121120    197111150811240
    197111150850480    197111150901060
    197111150930120    197111151050540
    197111151111300    197111151130060
    197111151150420    197111151521120
    197111151541480    197111151751060
    197111151811360    197111162200060
    197111181520360    197111190100540
    197111190930420    197111191431420
    197111191810120    197111200431000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (u-5-71-af.325_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197110300055000    197110301520000
    197110301530000    197110310500000
    197110310550000    197110311020000
    197110311040000    197110311050000
    197110311140000    197110311745000
    197110311805000    197110312140000
    197110312150000    197110312205000
    197110312215000    197111011110000
    197111011135000    197111012025000
    197111012045000    197111012220000
    197111012230000    197111021040000
    197111021910000    197111022300000
    197111022315000    197111022330000
    197111022340000    197111031320000
    197111031330000    197111032240000
    197111032255000    197111032315000
    197111032325000    197111032340000
    197111032355000    197111041145000
    197111041255000    197111041445000
    197111041455000    197111041950000
    197111042020000    197111050245000
    197111050450000    197111051000000
    197111051010000    197111051210000
    197111051220000    197111052325000
    197111052335000    197111060745000
    197111060800000    197111061040000
    197111061100000    197111061220000
    197111061235000    197111061600000
    197111061610000    197111070010000
    197111070025000    197111070205000
    197111070215000    197111070320000
    197111070330000    197111070445000
    197111070455000    197111071220000
    197111072345000    197111080645000
    197111080700000    197111080710000
    197111080730000    197111080805000
    197111080815000    197111080835000
    197111080910000    197111081050000
    197111081100000    197111081120000
    197111081730000    197111081950000
    197111082005000    197111082010000
    197111082020000    197111090625000
    197111090635000    197111090750000
    197111120535000    197111121335000
    197111121555000    197111122030000
    197111122040000    197111130115000
    197111130130000    197111130655000
    197111130705000    197111130710000
    197111130720000    197111130720000
    197111130740000    197111130740000
    197111130835000    197111130945000
    197111131005000    197111131110000
    197111131205000    197111132100000
    197111132120000    197111141120000
    197111141130000    197111141425000
    197111141435000    197111142300000
    197111142315000    197111142315000
    197111142330000    197111150625000
    197111150635000    197111150725000
    197111150735000    197111151150000
    197111151210000    197111151700000
    197111151710000    197111152030000
    197111152230000    197111160205000
    197111160220000    197111160255000
    197111160325000    197111160325000
    197111160335000    197111160640000
    197111160650000    197111160940000
    197111160950000    197111161950000
    197111162000000    197111162055000
    197111162105000    197111162110000
    197111162120000    197111162200000
    197111181530000    197111181530000
    197111181730000    197111190600000
    197111190610000    197111190915000
    197111190925000    197111191430000
    197111191805000    197111191835000
    197111191845000    197111191940000
    197111191950000    197111192320000
    197111192330000    197111200600000
    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 71005 (U-5-71-AF) data set <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.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/u571af/html/u-5-71-af.nav.html>

Data format: ASCII Size: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.grav.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.mag.html>

Data format: ASCII Size: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.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>)


    Generated by mp version 2.9.13 on Wed Oct 30 07:59:33 2013