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What does this data set describe?

Title:
Geophysical data of field activity L-6-81-NP in Off British Columbia and Washington, Northern Pacific from 05/31/1981 to 06/07/1981
Abstract:
Chief Scientist: Andy Stevenson. Geophysical data (airgun, magnetics, dopplersonar, integratednavigation, RhoRho, transitsatellite, gravity, 3dot5khz, 12khz, magnetics) of field activity L-6-81-NP in Off British Columbia and Washington, Northern Pacific from 05/31/1981 to 06/07/1981, <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.meta.html>.
Supplemental_Information:

Equipment Used -
airgun single-channel airgun
magnetics shipboard magnetics
dopplersonar
integratednavigation
RhoRho Loran-C Rho-Rho
transitsatellite
gravity shipboard gravity
3dot5khz 3.5 khz bathymetry
12khz 12 khz bathymetry
magnetics Geometrics Proton Precession magnetometer

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 L-6-81-NP in Off British Columbia and Washington, Northern Pacific from 05/31/1981 to 06/07/1981: 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: -152.53345
    East_Bounding_Coordinate: -124.04906
    North_Bounding_Coordinate: 57.74495
    South_Bounding_Coordinate: 44.60095

  3. What does it look like?

    <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.nav.gif> (GIF)
    Trackline map of L-6-81-NP
    <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.grav.gif> (GIF)
    Gravity data trackline map of L-6-81-NP
    <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.mag.gif> (GIF)
    Magnetics data trackline map of L-6-81-NP
    <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.bath.gif> (GIF)
    Bathymetry data trackline map of L-6-81-NP
    <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.seis.gif> (GIF)
    Seismic shot point data trackline map of L-6-81-NP

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

    Beginning_Date: 31-May-1981
    Ending_Date: 07-Jun-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: Off British Columbia and Washington, 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>
    Entity_and_Attribute_Overview:
    Seismic Shots with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/seis.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?

    Andy Stevenson (Chief Scientist); Barb Blubaugh (Navigator); Darrell Klingman (Watchstander); Donna Blackman (Watchstander); Guy Cochrane (Watchstander); Jack Lee (Electronics Technician); Jim Saltzgaber (Chief Engineer); Kaye Kinoshita (Navigator); Louis Solana (Chief Mate); Terry Ruff (Ship Captain)

  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: 14-Mar-2002 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    07/22/85 KAYE DRS$DATA:[L681NP.N]L681NP.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l681np.sinsc1._.
    
    

    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: 28-Oct-2008 (process 2 of 4)
    Gravity Data
    10/28/2008 carolyn l-6-81-np.161_053
    /infobank/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    10/11/85 BARB DRS$DATA:[L681NP.G]L681NP.161;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    Input was...
    Converted to time format with year at start.
    
    07/22/85 KAYE DRS$DATA:[L681NP.N]L681NP.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l681np.sinsc1._.
    
    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 l-6-81-np.220_053
    
    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...
    11/06/2008 carolyn l-6-81-np.200_053
    /infobank/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    11/19/85 CAROLYN DRS$DATA:[L681NP.M]L681NP.200;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    was L681NP._.MAGSB1       on TAM282
    was L681NP220.DAT         on VAM282
    
    Converted to time format with year at start.
    
    07/22/85 KAYE DRS$DATA:[L681NP.N]L681NP.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l681np.sinsc1._.
    
    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: 03-Nov-2008 (process 4 of 4)
    Bathymetry Data
    11/03/2008 jpaz /infobank/l/l681np/bath/l-6-81-np.335_053
    /infobank/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    08/30/85 BECKIE DUA0:[DATA.L681NP.B]L681NP.335;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    This file was hand-digetized in 2-way traveltime(secs).
    
    Input was...
    Converted to time format with year at start.
    
    07/22/85 KAYE DRS$DATA:[L681NP.N]L681NP.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l681np.sinsc1._.
    
    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 (l-6-81-np.053 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198105311555000    198105311555000
    198105311641000    198106060600000
    198106070230000    198106070230000
    Navigation Data (l-6-81-np.053_410)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198106030750020    198106042318570
    198106042328020    198106051837570
    198106051845030    198106060600000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (l-6-81-np.161_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198105311643180    198106010924240
    198106010941180    198106021113540
    198106021119000    198106031355240
    198106031401060    198106051729240
    198106051734300    198106070221420
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (l-6-81-np.220_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198106010255200    198106010929280
    198106010946160    198106031400560
    198106031406040    198106061645200
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (l-6-81-np.335_053)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198106010126180    198106020151120
    198106020157060    198106020515540
    198106020521420    198106020541360
    198106020548000    198106021108000
    198106021113180    198106021114540
    198106021122360    198106021232540
    198106021245360    198106021308540
    198106021318300    198106021327180
    198106021336000    198106021830000
    198106021836360    198106022226420
    198106022233060    198106022233060
    198106022238300    198106030330000
    198106030336480    198106030403300
    198106030412480    198106030713060
    198106030720240    198106030802300
    198106030814180    198106030830000
    198106030835300    198106030844360
    198106030850420    198106030850420
    198106030856420    198106030907300
    198106030912360    198106030912360
    198106030917420    198106031354540
    198106031402060    198106031602540
    198106031611120    198106031724480
    198106031729540    198106031729540
    198106031735480    198106031846360
    198106031851540    198106031851540
    198106031857540    198106031905540
    198106031911000    198106031911000
    198106031916360    198106031916360
    198106031921480    198106031921480
    198106031927480    198106031927480
    198106031934000    198106031934000
    198106031940420    198106031940420
    198106031947420    198106031947420
    198106031953300    198106031953300
    198106031958360    198106040001540
    198106040007480    198106040054120
    198106040100000    198106040109540
    198106040115300    198106040211480
    198106040217240    198106040338540
    198106040356240    198106040446300
    198106040451420    198106040612000
    198106040617060    198106040632360
    198106040638240    198106040812240
    198106040817300    198106040817300
    198106040823120    198106040833540
    198106040839000    198106040839000
    198106040844180    198106040844180
    198106040849420    198106040849420
    198106040855000    198106040918540
    198106040924060    198106040938360
    198106040944240    198106040944240
    198106040950060    198106040950060
    198106040956060    198106041013540
    198106041019000    198106041203300
    198106041208480    198106041213420
    198106041219060    198106041219060
    198106041224540    198106041224540
    198106041230000    198106041421240
    198106041426300    198106041508480
    198106041514180    198106041738060
    198106041746240    198106042012180
    198106042017240    198106050143420
    198106050148540    198106050438420
    198106050444000    198106050453420
    198106050458480    198106050503360
    198106050508480    198106050508480
    198106050514180    198106050514180
    198106050520000    198106050520000
    198106050525180    198106050812240
    198106050817300    198106050913420
    198106050918480    198106050918480
    198106050924060    198106050924060
    198106050930000    198106050946000
    198106050951120    198106051248240
    198106051253420    198106051313300
    198106051318360    198106051608120
    198106051613240    198106051637540
    198106051643300    198106051643300
    198106051648480    198106051808180
    198106051814000    198106051818540
    198106051824000    198106051908240
    198106051913300    198106051913300
    198106051918540    198106051918540
    198106051924120    198106051924120
    198106051930000    198106052040180
    198106052045360    198106052142000
    198106052147060    198106052238480
    198106052245120    198106052245120
    198106052250180    198106060008240
    198106060024300    198106060236300
    198106060241540    198106060300000
    198106060305240    198106061234060
    198106061240120    198106061309120
    198106061318180    198106061321000
    198106061326300    198106061330420
    198106061335480    198106061335480
    198106061343180    198106061403000
    198106061409240    198106061409240
    198106061415180    198106061859360
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (l-6-81-np.410)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198106030750020    198106042318570
    198106042328020    198106051837570
    198106051845030    198106060600000
    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 L-6-81-NP data set <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-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: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.nav.html>

Data format: ASCII Size: 0.8
Network links: <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.grav.html>

Data format: ASCII Size: 7.1
Network links: <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.mag.html>

Data format: ASCII Size: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.bath.html>

Data format: ASCII Size: 7.8
Network links: <http://walrus.wr.usgs.gov/infobank/l/l681np/html/l-6-81-np.seis.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 12:51:19 2013