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What does this data set describe?

Title:
Geophysical data of field activity G-1-76-NP in North Pacific from 01/18/1976 to 01/28/1976
Abstract:
Geophysical data (bathymetry, gravity, magnetics) of field activity G-1-76-NP in North Pacific from 01/18/1976 to 01/28/1976, <http://walrus.wr.usgs.gov/infobank/g/g176np/html/g-1-76-np.meta.html>.
Supplemental_Information:

Equipment Used -
bathymetry
gravity
magnetics

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/>, 20130331, Geophysical data of field activity G-1-76-NP in North Pacific from 01/18/1976 to 01/28/1976: 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: 161.00166
    East_Bounding_Coordinate: 179.99834
    North_Bounding_Coordinate: 19.99833
    South_Bounding_Coordinate: 8.98333

  3. What does it look like?

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

    Beginning_Date: 18-Jan-1976
    Ending_Date: 28-Jan-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: North 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?

  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/g/g176np/grav/g-1-76-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 g-1-76-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/g/g176np/mag/g-1-76-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/g/g176np/bath/g-1-76-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 (g-1-76-np.050 [SINS])
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
197601182330000    197601182355000
197601190010000    197601190145000
197601190155000    197601190545000
197601190555000    197601190945000
197601190955000    197601191345000
197601191355000    197601191745000
197601191755000    197601192145000
197601192155000    197601200145000
197601200155000    197601200545000
197601200555000    197601200945000
197601200955000    197601201345000
197601201355000    197601201745000
197601201755000    197601202145000
197601202155000    197601210145000
197601210155000    197601210545000
197601210555000    197601210945000
197601210955000    197601211345000
197601211355000    197601211745000
197601211755000    197601212145000
197601212155000    197601220145000
197601220155000    197601220545000
197601220555000    197601220945000
197601220955000    197601221345000
197601221355000    197601221745000
197601221755000    197601222145000
197601222155000    197601230145000
197601230155000    197601230250000
197601280305000    197601280305000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Gravity Data (g-1-76-np.160_050)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
197601182330000    197601182355000
197601190010000    197601190145000
197601190155000    197601190545000
197601190555000    197601190945000
197601190955000    197601191345000
197601191355000    197601191745000
197601191755000    197601192145000
197601192155000    197601200145000
197601200155000    197601200545000
197601200555000    197601200945000
197601200955000    197601201345000
197601201355000    197601201745000
197601201755000    197601202145000
197601202155000    197601210145000
197601210155000    197601210545000
197601210555000    197601210945000
197601210955000    197601211345000
197601211355000    197601211745000
197601211755000    197601212145000
197601212155000    197601220145000
197601220155000    197601220545000
197601220555000    197601220945000
197601220955000    197601221345000
197601221355000    197601221745000
197601221755000    197601222145000
197601222155000    197601230145000
197601230155000    197601230250000
197601280305000    197601280305000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Magnetics Data (g-1-76-np.220_050)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
197601182330000    197601182355000
197601190010000    197601190145000
197601190155000    197601190545000
197601190555000    197601190945000
197601190955000    197601191345000
197601191355000    197601191745000
197601191755000    197601192145000
197601192155000    197601200145000
197601200155000    197601200545000
197601200555000    197601200945000
197601200955000    197601201345000
197601201355000    197601201745000
197601201755000    197601202145000
197601202155000    197601210145000
197601210155000    197601210545000
197601210555000    197601210945000
197601210955000    197601211345000
197601211355000    197601211745000
197601211755000    197601212145000
197601212155000    197601220145000
197601220155000    197601220545000
197601220555000    197601220945000
197601220955000    197601221345000
197601221355000    197601221745000
197601221755000    197601222145000
197601222155000    197601230145000
197601230155000    197601230250000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Bathymetry Data (g-1-76-np.325_050)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
197601182330000    197601182355000
197601190010000    197601190145000
197601190155000    197601190545000
197601190555000    197601190945000
197601190955000    197601191345000
197601191355000    197601191745000
197601191755000    197601192145000
197601192155000    197601200145000
197601200155000    197601200545000
197601200555000    197601200945000
197601200955000    197601201345000
197601201355000    197601201745000
197601201755000    197601202145000
197601202155000    197601210145000
197601210155000    197601210545000
197601210555000    197601210945000
197601210955000    197601211345000
197601211355000    197601211745000
197601211755000    197601212100000
197601212115000    197601212145000
197601212155000    197601220145000
197601220155000    197601220545000
197601220555000    197601220945000
197601220955000    197601221345000
197601221355000    197601221745000
197601221755000    197601222145000
197601222155000    197601230145000
197601230155000    197601230250000
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 G-1-76-NP data set <http://walrus.wr.usgs.gov/infobank/g/g176np/html/g-1-76-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: 0.0
Network links: <http://walrus.wr.usgs.gov/infobank/g/g176np/html/g-1-76-np.nav.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/g/g176np/html/g-1-76-np.grav.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/g/g176np/html/g-1-76-np.mag.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/g/g176np/html/g-1-76-np.bath.html>

  • Cost to order the data: None

    • Who wrote the metadata?

    Dates:
    Last modified: 31-Mar-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 Sun Mar 31 07:13:22 2013