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What does this data set describe?

Title:
Geophysical data of field activity A-1-76-CP in Tonga, Central Pacific from 04/26/1976 to 05/12/1976
Abstract:
Hawaii Institute of Geophysics. Chief Scientist: Charles Landmesser. Geophysical data (radar, sextant, 7khz) of field activity A-1-76-CP in Tonga, Central Pacific from 04/26/1976 to 05/12/1976, <http://walrus.wr.usgs.gov/infobank/a/a176cp/html/a-1-76-cp.meta.html>.
Supplemental_Information:

Equipment Used -
radar
sextant
7khz Raytheon PTR106C-1, 07khz, 01 sec/sweep
Notes -
Hawaii Institute Geophysics For CCOPSOPAC; see A-1T-77-CP 35mm microfilm #7 for data on this cruise

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/>, 20131029, Geophysical data of field activity A-1-76-CP in Tonga, Central Pacific from 04/26/1976 to 05/12/1976: 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: -174.99333
    East_Bounding_Coordinate: -173.00000
    North_Bounding_Coordinate: -18.00000
    South_Bounding_Coordinate: -21.12333

  3. What does it look like?

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

    Beginning_Date: 26-Apr-1976
    Ending_Date: 12-May-1976
    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: Tonga, Central Pacific
      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:
    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?

    Charles Landmesser (Chief Scientist)

  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 2)
    Navigation Data
    01/30/1998 clint a-1-76-cp.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 2)
    Bathymetry Data
    10/31/1998  /lion/a/a176cp/bath/a-1-76-cp.320_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    01/30/1998 clint a-1-76-cp.320
    /bear/programs/ngdc/unrefngdc/unrefngdc
    Edited bathymetry data with corrected depths
    
    Input was...
    01/30/1998 clint a-1-76-cp.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 (a-1-76-cp.050 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197604261527000    197605042213419
    197605042300000    197605050200000
    197605050300000    197605050300000
    197605050350000    197605050700000
    197605050800000    197605050800000
    197605050900000    197605050900000
    197605051000000    197605051000000
    197605051045000    197605052100000
    197605052200000    197605052200000
    197605052300000    197605052300000
    197605060000000    197605060000000
    197605060100000    197605060100000
    197605060200000    197605060200000
    197605060300000    197605060300000
    197605060400000    197605060400000
    197605060500000    197605060500000
    197605060600000    197605060600000
    197605060700000    197605060700000
    197605060800000    197605060800000
    197605060900000    197605060900000
    197605061000000    197605061000000
    197605061100000    197605061100000
    197605061200000    197605061200000
    197605061300000    197605061300000
    197605061349550    197605080100000
    197605080200000    197605080200000
    197605080300000    197605081717179
    197605081800000    197605081900000
    197605082000000    197605082000000
    197605082100000    197605082100000
    197605082200000    197605082200000
    197605082300000    197605090000000
    197605090100000    197605090100000
    197605090200000    197605090200000
    197605090300000    197605090800000
    197605090900000    197605091900000
    197605092000000    197605092000000
    197605092100000    197605101600000
    197605101700000    197605110400000
    197605110500000    197605110600000
    197605110700000    197605110700000
    197605110800000    197605112109129
    197605112154219    197605120630000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (a-1-76-cp.320_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197604261528109    197604270457570
    197604270605059    197604271125430
    197604271546039    197604271712059
    197604271738570    197604272240440
    197604281142089    197604281744400
    197604281915310    197604290136380
    197604290216049    197604300306239
    197604300345150    197604300633500
    197604300939129    197604301541209
    197604301715320    197604301827530
    197604301903059    197604302036509
    197604302150570    197604302212039
    197604302302490    197605010819470
    197605010931000    197605011017109
    197605011122159    197605011144550
    197605011523219    197605011610380
    197605011719389    197605011806179
    197605020101350    197605021205330
    197605021350179    197605021535470
    197605021613150    197605021954119
    197605022124560    197605030639079
    197605030703029    197605030711550
    197605030803179    197605030917039
    197605030950400    197605031109590
    197605031141289    197605031155069
    197605031254580    197605031306039
    197605031332300    197605031442069
    197605031523410    197605031603189
    197605032254329    197605040046380
    197605040114440    197605040133239
    197605040203009    197605041237370
    197605041333550    197605042046509
    197605042120310    197605042213419
    197605042333089    197605050119289
    197605050351509    197605050621079
    197605051051520    197605052025380
    197605061349550    197605072010451
    197605072043410    197605072235440
    197605072305099    197605080019159
    197605080328269    197605081544029
    197605081609560    197605081638560
    197605081705089    197605081717179
    197605081800330    197605081823089
    197605090338400    197605090740440
    197605090901069    197605091210159
    197605091232000    197605091530500
    197605091642550    197605091856269
    197605092132279    197605101536520
    197605101722389    197605110323590
    197605110810039    197605112109129
    197605112154219    197605120204470
    197605120228139    197605120627019
    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 A-1-76-CP data set <http://walrus.wr.usgs.gov/infobank/a/a176cp/html/a-1-76-cp.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/a/a176cp/html/a-1-76-cp.nav.html>

Data format: ASCII Size: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/a/a176cp/html/a-1-76-cp.bath.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 29-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 Tue Oct 29 07:32:13 2013