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What does this data set describe?

Title:
Geophysical data of field activity 71007 (U-7-71-PR) in Puerto Rico from 12/11/1971 to 12/15/1971
Abstract:
Chief Scientist: Louis Garrison. Geophysical data (bathymetry, gravity) of field activity 71007 (U-7-71-PR) in Puerto Rico from 12/11/1971 to 12/15/1971, <http://walrus.wr.usgs.gov/infobank/u/u771pr/html/u-7-71-pr.meta.html>.
Supplemental_Information:

Equipment Used -
bathymetry
gravity

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 71007 (U-7-71-PR) in Puerto Rico from 12/11/1971 to 12/15/1971: 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: -66.79420
    East_Bounding_Coordinate: -64.96250
    North_Bounding_Coordinate: 18.69420
    South_Bounding_Coordinate: 18.06090

  3. What does it look like?

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

    Beginning_Date: 11-Dec-1971
    Ending_Date: 15-Dec-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: Puerto Rico
      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:
    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?

    Louis Garrison (Chief Scientist, USGS Corpus Christi); James Case (Geophysicist, USGS Corpus Christi); Dennis Cox (Geologist, USGS Eastern Region Puerto Rico); Harry Hill (Electronics Technician, USGS Western Region); Jim Nicholson (Electronics Technician, USGS Western Region)

  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 3)
    Navigation Data
    Converted to time format with year at start.
    
    04/29/86 BECKIE DUA0:[DATA.U771PR]U771PR.051;
    Navigation added to .050 file from U771PR.FAA_BA_BATHY
    Addition was to end of file and started at 348/1530.
    
    02/11/86 KAYE DUA0:[DATA.U771PR.N]U771PR.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 3)
    Gravity Data
    10/31/1998  /tiger/u/u771pr/grav/u-7-71-pr.180_051
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    05/01/86 BECKIE DUA0:[DATA.U771PR]U771PR.180;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    This file came from U771PR.FAA_BA_BATHY. Obs_grv is in gals.
    
    Input was...
    Converted to time format with year at start.
    
    04/29/86 BECKIE DUA0:[DATA.U771PR]U771PR.051;
    Navigation added to .050 file from U771PR.FAA_BA_BATHY
    Addition was to end of file and started at 348/1530.
    
    02/11/86 KAYE DUA0:[DATA.U771PR.N]U771PR.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 3 of 3)
    Bathymetry Data
    10/31/1998  /tiger/u/u771pr/bath/u-7-71-pr.326_051
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    04/29/86 BECKIE DUA0:[DATA.U771PR]U771PR.326;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    This file differs from U771PR14.325 by having 300 additional
    corrected depths added to the end, starting at 348/1530.  The
    data came from U771PR.FAA_BA_BATHY.
    
    03/07/86 BECKIE DUA0:[DATA.U771PR]U771PR14.325;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    Input was...
    Converted to time format with year at start.
    
    04/29/86 BECKIE DUA0:[DATA.U771PR]U771PR.051;
    Navigation added to .050 file from U771PR.FAA_BA_BATHY
    Addition was to end of file and started at 348/1530.
    
    02/11/86 KAYE DUA0:[DATA.U771PR.N]U771PR.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:


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-7-71-pr.051 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197112112245000    197112120230000
    197112120251000    197112140230000
    197112140236000    197112140440000
    197112140450000    197112141505000
    197112141530000    197112151625000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (u-7-71-pr.180_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197112112245000    197112120230000
    197112120255000    197112120335000
    197112120345000    197112121040000
    197112121050000    197112121730000
    197112121740000    197112122330000
    197112122352000    197112122352000
    197112130000000    197112130315000
    197112130325000    197112140230000
    197112140240000    197112140440000
    197112140450000    197112141505000
    197112141530000    197112151625000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (u-7-71-pr.326_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197112112245000    197112120230000
    197112120251000    197112140230000
    197112140236000    197112140440000
    197112140450000    197112141505000
    197112141530000    197112151625000
    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 71007 (U-7-71-PR) data set <http://walrus.wr.usgs.gov/infobank/u/u771pr/html/u-7-71-pr.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: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/u/u771pr/html/u-7-71-pr.nav.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/u/u771pr/html/u-7-71-pr.grav.html>

Data format: ASCII Size: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/u/u771pr/html/u-7-71-pr.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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