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What does this data set describe?

Title:
Geophysical data of field activity C-7-71-NP in Adak, Alaska to Victoria, British Columbia from 08/20/1971 to 09/21/1971
Abstract:
Chief Scientist: Bob Embley. Geophysical data (transitsatellite, magnetics, gravity, airgun, 3dot5khz, 12khz) of field activity C-7-71-NP in Adak, Alaska to Victoria, British Columbia from 08/20/1971 to 09/21/1971, <http://walrus.wr.usgs.gov/infobank/c/c771np/html/c-7-71-np.meta.html>.
Supplemental_Information:

Equipment Used -
transitsatellite
magnetics l-DGO Mfg. Proton-Precession magnetometer
gravity Anschutz Electrictable Askania GSS2-31 gravity
airgun l-DGO 25cu-in-airgun
3dot5khz 3.5 khz bathymetry
12khz 12 khz bathymetry

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 C-7-71-NP in Adak, Alaska to Victoria, British Columbia from 08/20/1971 to 09/21/1971: 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: -176.50000
    East_Bounding_Coordinate: -123.44500
    North_Bounding_Coordinate: 59.95800
    South_Bounding_Coordinate: 48.24780

  3. What does it look like?

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

    Beginning_Date: 20-Aug-1971
    Ending_Date: 21-Sep-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: Adak, Alaska to Victoria, British Columbia
      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?

    Bob Embley (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: 19-Jan-1996 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.050;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    

    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  /lion/c/c771np/grav/c-7-71-np.160_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.160;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    Input was...
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.050;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    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 c-7-71-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  /lion/c/c771np/mag/c-7-71-np.200_050
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.200;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.050;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    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  /lion/c/c771np/bath/c-7-71-np.300_050
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.300;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    Input was...
    Converted to time format with year at start.
    
    05/06/86 CLINT DUA0:[DATA.C771BS]C771BS.050;
    DRB0:[CLINT]80COL.EXE;
    from c1407.dat
    
    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 (c-7-71-np.050 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197108201430000    197109042234000
    197109042312000    197109042327000
    197109042348000    197109060447000
    197109060558000    197109060558000
    197109060703000    197109080030000
    197109080130000    197109081530000
    197109081555000    197109081555000
    197109081626000    197109081626000
    197109081730000    197109091436000
    197109091600000    197109101116000
    197109101200000    197109111517000
    197109111540000    197109111540000
    197109111652000    197109121420000
    197109121504000    197109121504000
    197109121619000    197109132132000
    197109132300000    197109140000000
    197109140100000    197109142000000
    197109142021000    197109142021000
    197109142112000    197109142112000
    197109142138000    197109142138000
    197109142205000    197109151522000
    197109151710000    197109161030000
    197109161100000    197109161100000
    197109161130000    197109161200000
    197109161221000    197109161221000
    197109161300000    197109161300000
    197109161330000    197109161330000
    197109161400000    197109161400000
    197109161430000    197109171406000
    197109171450000    197109171450000
    197109171524000    197109171524000
    197109171553000    197109180000000
    197109180100000    197109181020000
    197109181156000    197109181156000
    197109181225000    197109181230000
    197109181300000    197109181300000
    197109181342000    197109181402000
    197109181503000    197109191405000
    197109191456000    197109191456000
    197109191528000    197109210531000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (c-7-71-np.160_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197108201600000    197108201805000
    197108201855000    197108211225000
    197108211700000    197108212200000
    197108212225000    197108220045000
    197108221245000    197108232359000
    197108240455000    197108240655000
    197108240725000    197108241123000
    197108241150000    197108241856000
    197108242125000    197108250139000
    197108250600000    197108252040000
    197108252240000    197108260929000
    197108261220000    197108261559000
    197108261620000    197108270751000
    197108270815000    197108280326000
    197108280655000    197108281447000
    197108281508000    197108281929000
    197108282000000    197108282115000
    197108282145000    197108291359000
    197108291630000    197108292345000
    197108300115000    197108300617000
    197108301205000    197108310054000
    197108310115000    197108310600000
    197108310621000    197108312046000
    197108312310000    197109010324000
    197109010405000    197109010529000
    197109010850000    197109011822000
    197109011845000    197109012059000
    197109012348000    197109020345000
    197109020415000    197109021210000
    197109021245000    197109030304000
    197109030325000    197109031329000
    197109031730000    197109031930000
    197109032005000    197109032059000
    197109032330000    197109042059000
    197109042355000    197109050317000
    197109050340000    197109050908000
    197109050930000    197109051030000
    197109051112000    197109051230000
    197109052010000    197109060421000
    197109060715000    197109080030000
    197109080145000    197109080843000
    197109080945000    197109081529000
    197109081750000    197109091400000
    197109091615000    197109091902000
    197109092305000    197109100614000
    197109100855000    197109101027000
    197109101315000    197109102315000
    197109102345000    197109111449000
    197109111745000    197109121345000
    197109121630000    197109131217000
    197109131245000    197109132059000
    197109132330000    197109140000000
    197109140115000    197109141404000
    197109141429000    197109141545000
    197109141606000    197109141700000
    197109141721000    197109141845000
    197109141907000    197109141959000
    197109142215000    197109150439000
    197109150500000    197109151430000
    197109151805000    197109151805000
    197109151830000    197109160845000
    197109160906000    197109160943000
    197109161509000    197109171329000
    197109171610000    197109171800000
    197109171822000    197109171822000
    197109171845000    197109180000000
    197109180115000    197109180959000
    197109181530000    197109190454000
    197109190515000    197109191344000
    197109191545000    197109200552000
    197109200645000    197109200900000
    197109200923000    197109201459000
    197109201529000    197109202129000
    197109202159000    197109210429000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (c-7-71-np.220_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197108201509000    197108211242000
    197108211634000    197108220938000
    197108221151000    197108240000000
    197108240416000    197108241824000
    197108242124000    197108250139000
    197108250607000    197108260930000
    197108261216000    197108280330000
    197108280650000    197108291400000
    197108291610000    197108292342000
    197108300014000    197108300609000
    197108301151000    197108310000000
    197108310030000    197108312047000
    197108312254000    197109010530000
    197109010848000    197109012100000
    197109012347000    197109031330000
    197109031624000    197109032100000
    197109032330000    197109040008000
    197109040030000    197109042100000
    197109042327000    197109042327000
    197109050000000    197109051038000
    197109052003000    197109060423000
    197109060720000    197109080030000
    197109080142000    197109081130000
    197109081200000    197109081200000
    197109081230000    197109081530000
    197109081747000    197109091400000
    197109091604000    197109100225000
    197109100300000    197109101056000
    197109101252000    197109101730000
    197109101800000    197109111448000
    197109111716000    197109121346000
    197109121622000    197109132100000
    197109132307000    197109132307000
    197109132330000    197109140000000
    197109140112000    197109142000000
    197109142211000    197109151451000
    197109151745000    197109160945000
    197109161458000    197109171330000
    197109171557000    197109180000000
    197109180105000    197109181002000
    197109181519000    197109191345000
    197109191530000    197109202130000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (c-7-71-np.300_050)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197108201436000    197108211300000
    197108211630000    197108221000000
    197108221130000    197108240030000
    197108240412000    197108241918000
    197108242115000    197108250139000
    197108250200000    197108250200000
    197108250530000    197108260942000
    197108261200000    197108280400000
    197108280645000    197108291357000
    197108291600000    197108300636000
    197108301145000    197108312103000
    197108312251000    197109010551000
    197109010842000    197109012130000
    197109012339000    197109031357000
    197109031600000    197109032118000
    197109032324000    197109042118000
    197109042348000    197109060318000
    197109060330000    197109060442000
    197109060715000    197109080027000
    197109080133000    197109081527000
    197109081730000    197109091354000
    197109091600000    197109101042000
    197109101200000    197109111512000
    197109111730000    197109121400000
    197109121630000    197109132118000
    197109132300000    197109140000000
    197109140106000    197109142000000
    197109142206000    197109151448000
    197109151730000    197109161006000
    197109161030000    197109161030000
    197109161100000    197109161100000
    197109161130000    197109161130000
    197109161200000    197109161200000
    197109161300000    197109161300000
    197109161330000    197109161330000
    197109161400000    197109161400000
    197109161430000    197109161430000
    197109161500000    197109171406000
    197109171600000    197109180000000
    197109180106000    197109181018000
    197109181506000    197109191342000
    197109191600000    197109210530000
    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 C-7-71-NP data set <http://walrus.wr.usgs.gov/infobank/c/c771np/html/c-7-71-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: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/c/c771np/html/c-7-71-np.nav.html>

Data format: ASCII Size: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/c/c771np/html/c-7-71-np.grav.html>

Data format: ASCII Size: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/c/c771np/html/c-7-71-np.mag.html>

Data format: ASCII Size: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/c/c771np/html/c-7-71-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>)


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