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What does this data set describe?

Title:
Geophysical data of field activity V-10-77-IN in Port Louis, Mauritius to Capetown, South Africa from 12/09/1977 to 12/30/1977
Abstract:
Chief Scientist: E. Simpson. Geophysical data (sextant, bathymetry, magnetics, gravity, 2channelairgun, gravitycore, pistoncore) of field activity V-10-77-IN in Port Louis, Mauritius to Capetown, South Africa from 12/09/1977 to 12/30/1977, <http://walrus.wr.usgs.gov/infobank/v/v1077in/html/v-10-77-in.meta.html>.
Supplemental_Information:

Equipment Used -
sextant
bathymetry
magnetics l-DGO Mfg. Proton Precession magnetometer
gravity Graf-Askania GSS2-12 gravity
2channelairgun 25 cu. in. two-channel airgun
gravitycore
pistoncore
Notes -
Lamont-Doherty
<http://www.ldeo.columbia.edu/>

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/>, 20140504, Geophysical data of field activity V-10-77-IN in Port Louis, Mauritius to Capetown, South Africa from 12/09/1977 to 12/30/1977: 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: 18.13330
    East_Bounding_Coordinate: 57.23070
    North_Bounding_Coordinate: -20.25800
    South_Bounding_Coordinate: -38.80520

  3. What does it look like?

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

    Beginning_Date: 09-Dec-1977
    Ending_Date: 30-Dec-1977
    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: Port Louis, Mauritius to Capetown, South Africa
      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?

    E. Simpson (Chief Scientist, Lamont-Doherty)

  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: 30-Jan-1998 (process 1 of 4)
    Navigation Data
    01/30/1998 clint v-10-77-in.050
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Integrated navigation (SINS) data
    
    

    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/v/v1077in/grav/v-10-77-in.160_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    01/30/1998 clint v-10-77-in.160
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Free Air Anomaly data
    
    Input was...
    01/30/1998 clint v-10-77-in.050
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Integrated navigation (SINS) data
    
    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 v-10-77-in.221_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/magred1111/magred1111.for
    Using geodetic coordinate system (Earth shape approximated by spheriod)
    with altitude 0.0 km (for sea level).
    
    Input was...
    10/31/1998  /tiger/v/v1077in/mag/v-10-77-in.220_050
    /bear/programs/edit/automerge/automerge
    
    01/30/1998 clint v-10-77-in.220
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Edited magnetics data
    
    01/30/1998 clint v-10-77-in.050
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Integrated navigation (SINS) data
    
    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/v/v1077in/bath/v-10-77-in.320_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    01/30/1998 clint v-10-77-in.320
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Edited bathymetry data with corrected depths
    
    Input was...
    01/30/1998 clint v-10-77-in.050
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Integrated navigation (SINS) data
    
    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 (v-10-77-in.050 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197712101920000    197712150515000
    197712150538000    197712150542000
    197712150555000    197712150555000
    197712150702000    197712150702000
    197712150722000    197712150722000
    197712150826000    197712150826000
    197712150913000    197712160516000
    197712160632000    197712160632000
    197712160758000    197712160758000
    197712160832000    197712160832000
    197712161018000    197712161018000
    197712161100000    197712171053000
    197712171206000    197712171206000
    197712171236000    197712171236000
    197712171321000    197712210812000
    197712210850000    197712210850000
    197712210916000    197712210916000
    197712210936000    197712210936000
    197712211034000    197712211034000
    197712211115000    197712241450000
    197712241520000    197712291436000
    197712291459000    197712291459000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (v-10-77-in.160_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197712110000000    197712110000000
    197712110030000    197712110410000
    197712110530000    197712110540000
    197712110610000    197712111110000
    197712111150000    197712111340000
    197712111440000    197712111910000
    197712111940000    197712112250000
    197712112330000    197712120800000
    197712120830000    197712121830000
    197712121850000    197712122010000
    197712122100000    197712122110000
    197712122130000    197712122230000
    197712122310000    197712130240000
    197712130310000    197712130800000
    197712130830000    197712131400000
    197712131420000    197712131900000
    197712131920000    197712132120000
    197712132150000    197712140650000
    197712140710000    197712140730000
    197712140750000    197712140950000
    197712141030000    197712141110000
    197712141140000    197712141310000
    197712141350000    197712141710000
    197712141730000    197712142040000
    197712142100000    197712142100000
    197712142120000    197712150200000
    197712150220000    197712150450000
    197712151000000    197712151540000
    197712151610000    197712151900000
    197712151930000    197712160130000
    197712160150000    197712160230000
    197712160250000    197712160500000
    197712161140000    197712161330000
    197712161440000    197712161500000
    197712161530000    197712161620000
    197712161810000    197712162120000
    197712162140000    197712170130000
    197712170150000    197712170640000
    197712170700000    197712170810000
    197712170830000    197712171010000
    197712171420000    197712171510000
    197712171550000    197712171650000
    197712171720000    197712171930000
    197712172000000    197712172240000
    197712172300000    197712172330000
    197712172350000    197712180750000
    197712180810000    197712181040000
    197712181100000    197712181900000
    197712181940000    197712182100000
    197712182140000    197712190800000
    197712190840000    197712191040000
    197712191130000    197712191220000
    197712191240000    197712191610000
    197712191640000    197712191710000
    197712191740000    197712191850000
    197712191920000    197712191950000
    197712192010000    197712192020000
    197712192100000    197712192210000
    197712192300000    197712192330000
    197712200100000    197712200730000
    197712200800000    197712200800000
    197712200820000    197712200840000
    197712200930000    197712201000000
    197712201040000    197712201950000
    197712202130000    197712202220000
    197712202250000    197712210100000
    197712210130000    197712210250000
    197712210310000    197712210540000
    197712210620000    197712210740000
    197712211200000    197712211400000
    197712211630000    197712211850000
    197712211920000    197712212120000
    197712212150000    197712212220000
    197712212300000    197712220050000
    197712220120000    197712220130000
    197712220200000    197712220200000
    197712220230000    197712220630000
    197712220710000    197712220710000
    197712220730000    197712220900000
    197712220920000    197712221020000
    197712221040000    197712221100000
    197712221120000    197712221310000
    197712221330000    197712221550000
    197712221610000    197712221850000
    197712221920000    197712222100000
    197712222120000    197712230030000
    197712230100000    197712230120000
    197712230140000    197712230330000
    197712230350000    197712230750000
    197712230820000    197712231320000
    197712231340000    197712231400000
    197712231420000    197712231720000
    197712231750000    197712232220000
    197712232250000    197712232350000
    197712240010000    197712240900000
    197712240930000    197712241050000
    197712241120000    197712241220000
    197712241250000    197712241440000
    197712241630000    197712241730000
    197712241750000    197712242010000
    197712242050000    197712250030000
    197712250100000    197712250100000
    197712250120000    197712250120000
    197712250140000    197712250400000
    197712250420000    197712250810000
    197712250830000    197712251110000
    197712251140000    197712251330000
    197712251350000    197712252230000
    197712252310000    197712260810000
    197712260900000    197712261340000
    197712261420000    197712261450000
    197712261530000    197712261540000
    197712261640000    197712261910000
    197712261930000    197712270210000
    197712270240000    197712270450000
    197712270530000    197712271000000
    197712271020000    197712272100000
    197712272140000    197712272210000
    197712272240000    197712280140000
    197712280220000    197712280300000
    197712281720000    197712281730000
    197712281750000    197712282200000
    197712282230000    197712290100000
    197712290120000    197712291100000
    197712291120000    197712291430000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (v-10-77-in.221_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197712101924000    197712110806000
    197712110818000    197712111130000
    197712111218000    197712122124000
    197712122136000    197712132124000
    197712132136000    197712141330000
    197712141354000    197712150148000
    197712150200000    197712150454000
    197712150930000    197712160500000
    197712161200000    197712161654000
    197712161712000    197712171018000
    197712171400000    197712181218000
    197712181230000    197712190306000
    197712190318000    197712192212000
    197712192224000    197712210730000
    197712211224000    197712212330000
    197712212342000    197712221106000
    197712221118000    197712221130000
    197712221200000    197712221500000
    197712221512000    197712241430000
    197712241542000    197712261054000
    197712261106000    197712280148000
    197712280200000    197712290730000
    197712290830000    197712291118000
    197712291130000    197712291236000
    197712291248000    197712291430000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (v-10-77-in.320_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197712101924000    197712150512000
    197712150918000    197712160500000
    197712160512000    197712160512000
    197712161106000    197712171048000
    197712171330000    197712210812000
    197712211130000    197712241448000
    197712241524000    197712280418000
    197712280430000    197712291436000
    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 V-10-77-IN data set <http://walrus.wr.usgs.gov/infobank/v/v1077in/html/v-10-77-in.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/v/v1077in/html/v-10-77-in.nav.html>

Data format: ASCII Size: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/v/v1077in/html/v-10-77-in.grav.html>

Data format: ASCII Size: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/v/v1077in/html/v-10-77-in.mag.html>

Data format: ASCII Size: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/v/v1077in/html/v-10-77-in.bath.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 04-May-2014
    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 Sun May 4 07:00:39 2014