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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), Coastal and Marine Geology (CMG), 20081014, 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), Coastal and Marine Geology (CMG).

    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?

    <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.nav.gif> (GIF)
    Trackline map of U-5-71-AF
    <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.grav.gif> (GIF)
    Gravity data trackline map of U-5-71-AF
    <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.mag.gif> (GIF)
    Magnetics data trackline map of U-5-71-AF
    <http://walrus.wr.usgs.gov/infobank/u/u571af/html/u-5-71-af.bath.gif> (GIF)
    Bathymetry data trackline map of U-5-71-AF

  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
    Entity_and_Attribute_Detail_Citation:
    Edited bathymetry data with corrected depths 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, 2WayTravelTime, UncorrDepth, CorrDepth)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f7.4, t23, f7.1, t31, f7.1)
C format:       (%4.4i%3.3i3%2.2i%1.1i %7.1f %7.1f %7.1f\\n)
Naming:         .320
    Entity_and_Attribute_Overview: Gravity with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Free Air Anomaly data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, Eotvos, ObsGrv, TheoGrv, FAA)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f6.1, t23, f9.1, t33, f9.1, t43, f8.1)
C format:       (%4.4i%3.3i3%2.2i%1.1i %6.1f %9.1f %9.1f %8.1f\\n)
Naming:         .160
    Entity_and_Attribute_Overview: Magnetics with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Raw magnetics data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, MstObs)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f7.1)
C format:       (%4.4i%3.3i3%2.2i%1.1i %7.1f\\n)
Naming:         .200
    Entity_and_Attribute_Overview: Navigation with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Integrated navigation (SINS) data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, Latitude, Longitude)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f9.5, t26, f10.5)
C format:       (%4.4i%3.3i3%2.2i%1.1i %9.5f %10.5f\\n)
Naming:         .050

Who produced the data set?

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

    • U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

  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), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@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), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

    Date: 15-Dec-1995 (process 2 of 4)
    Gravity Data 
    Converted to time format with year at start.

03/07/86 BARB DUA0:[DATA.U571AF]U571AF.160
DRB0:[DRS.REFMT]REFORMAT.EXE;5

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

    Date: 15-Dec-1995 (process 3 of 4)
    Magnetics Data 
    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

Input was...
03/22/85 CAROLYN USR$DISK:[DRS.DATA.U5.M]U571AF.220;
USR$DISK:[DRS.REFMT]REFORMAT.EXE;3

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

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

03/07/86 BECKIE DUA0:[DATA.U571AF]U571AF.325;
DRB0:[DRS.REFMT]REFORMAT.EXE;5

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

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

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG), Unknown, USGS/CMG Information Bank: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG).

    Online Links:

    Other_Citation_Details: Updated daily

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)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
197110300305000    197111162155000
197111181515000    197111191425000
197111191805000    197111200020000
197111200035000    197111200600000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Magnetics Data (u-5-71-af.200)
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)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
197110300055000    197111131110000
197111131205000    197111132100000
197111132120000    197111142300000
197111142315000    197111142315000
197111142330000    197111151150000
197111151210000    197111152030000
197111152230000    197111160205000
197111160220000    197111160255000
197111160325000    197111162200000
197111181530000    197111181530000
197111181730000    197111191430000
197111191805000    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), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

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

    Downloadable Data 71005 (U-5-71-AF) data set

  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?

Who wrote the metadata?

Dates:
Last modified: 14-Oct-2008
Metadata author:
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
c/o Clint Steele
Data Acquisition, Processing, and Storage (DAPS) Group Leader
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA

(650) 329-5055 (voice)
(650) 329-5190 (FAX)
csteele@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.9.2 on Tue Oct 14 03:30:58 2008