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What does this data set describe?

Title:
Geophysical data of field activity K-4-81-NP in Northern Pacific from 09/23/1981 to 10/25/1981
Abstract:
Chief Scientists: F.K. Duennebier, T. Shipley. Geophysical data (bathymetry, gravity, magnetics) of field activity K-4-81-NP in Northern Pacific from 09/23/1981 to 10/25/1981, <http://walrus.wr.usgs.gov/infobank/k/k481np/html/k-4-81-np.meta.html>.
Supplemental_Information:

Equipment Used -
bathymetry
gravity
magnetics magnetometer
Notes -
Hawaii Institute of Geophysics
<http://www.pgd.hawaii.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/>, 20131029, Geophysical data of field activity K-4-81-NP in Northern Pacific from 09/23/1981 to 10/25/1981: 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: 150.00093
    East_Bounding_Coordinate: 173.63782
    North_Bounding_Coordinate: 19.99977
    South_Bounding_Coordinate: 7.10584

  3. What does it look like?

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

    Beginning_Date: 23-Sep-1981
    Ending_Date: 25-Oct-1981
    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: Northern 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:
    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?

    F.K. Duennebier (Chief Scientist); T. Shipley (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: 06-Dec-1995 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    03/03/86 KAYE DUA0:[DATA.<cruise_id>.N]<cruise_id>.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
     Extracted from data acquired from NGDC.
    
    

    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/k/k481np/grav/k-4-81-np.160_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    02/20/86 BARB DUA0:[DATA.<CRUISE_ID>.G]<CRUISE_ID>.160;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    extracted from data acquired from NGDC
    
    Input was...
    Converted to time format with year at start.
    
    03/03/86 KAYE DUA0:[DATA.<cruise_id>.N]<cruise_id>.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
     Extracted from data acquired from NGDC.
    
    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 k-4-81-np.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/k/k481np/mag/k-4-81-np.200_050
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    03/03/86 CAROLYN DRS$DATA:[<cruise_id>.M]<cruise_id>.200;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    extracted by Clint from data acquired from NGDC
    
    Converted to time format with year at start.
    
    03/03/86 KAYE DUA0:[DATA.<cruise_id>.N]<cruise_id>.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
     Extracted from data acquired from NGDC.
    
    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/k/k481np/bath/k-4-81-np.325_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    03/03/86 BECKIE DRS$DATA:[<cruise_id>.B]<cruise_id>.325;
    DRB0:[DRS.NGDC]UNREFNGDC.EXE;5
    NGDC files sometimes have only 2_way_travel_time in
    which case the format is the same but without corr_depth.
    This file was extracted by C. Steele from data acquired from NGDC.
    
    Input was...
    Converted to time format with year at start.
    
    03/03/86 KAYE DUA0:[DATA.<cruise_id>.N]<cruise_id>.050;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
     Extracted from data acquired from NGDC.
    
    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 (k-4-81-np.050 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109231145000    198110151358000
    198110181425000    198110252208000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (k-4-81-np.160_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109231145000    198110151355000
    198110181425000    198110252205000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (k-4-81-np.220_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198109231145000    198109300305000
    198109300426000    198110042047000
    198110050314000    198110060945000
    198110061520000    198110071500000
    198110072148000    198110080148000
    198110081854000    198110092347000
    198110100005000    198110102053000
    198110102059000    198110102100000
    198110102106000    198110102113000
    198110102121000    198110111127000
    198110111516000    198110141713000
    198110150902000    198110151358000
    198110181425000    198110191619000
    198110191920000    198110200445000
    198110200700000    198110201429000
    198110201750000    198110210433000
    198110210721000    198110211441000
    198110211645000    198110220535000
    198110220715000    198110221555000
    198110221700000    198110251600000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (k-4-81-np.325_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    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 K-4-81-NP data set <http://walrus.wr.usgs.gov/infobank/k/k481np/html/k-4-81-np.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: 1.7
Network links: <http://walrus.wr.usgs.gov/infobank/k/k481np/html/k-4-81-np.nav.html>

Data format: ASCII Size: 0.7
Network links: <http://walrus.wr.usgs.gov/infobank/k/k481np/html/k-4-81-np.grav.html>

Data format: ASCII Size: 2.3
Network links: <http://walrus.wr.usgs.gov/infobank/k/k481np/html/k-4-81-np.mag.html>

Data format: ASCII Size: 1.2
Network links: <http://walrus.wr.usgs.gov/infobank/k/k481np/html/k-4-81-np.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 12:41:56 2013