Coastal & Marine Geology InfoBank

Home FACS Activities Atlas Geology School Related Sites More

Skip navigational links
Loading
Activities: by ID   by Platform   by Year   by Region   by Participant   by Organization   by Project/Theme   with Incomplete IDs   Disclaimer  
Activity First Letter: A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   0   1   2   3   4   5   6   7   8   9  
Virtual Globes: Atlas  (GE)    Samples  (GE)    Moorings  (GE)    Illuminate Oceans  (GE)    Earthquakes  (GE)    Get GE    InfoBank examples    State Waters    Chronology  (GE)    Gravity Base Stations  (GE)

What does this data set describe?

Title:
Geophysical data of field activity L-8-76-NP in Northern Pacific from 09/29/1976 to 10/21/1976
Abstract:
Chief Scientist: Brent Dalrymple. Geophysical data (3dot5khz, 12khz, airgun, RhoRho, dopplersonar, integratednavigation, transitsatellite, gravity, gradiometer, uniboom, sonobuoy, chaindredge) of field activity L-8-76-NP in Northern Pacific from 09/29/1976 to 10/21/1976, <http://walrus.wr.usgs.gov/infobank/l/l876np/html/l-8-76-np.meta.html>.
Supplemental_Information:

Equipment Used -
3dot5khz 3.5 khz bathymetry
12khz 12 khz bathymetry
airgun 80 kj and 160 kj single-channel airgun
RhoRho Loran C Rho-Rho
dopplersonar
integratednavigation
transitsatellite satellite navigation
gravity shipboard gravity
gradiometer
uniboom
sonobuoy
chaindredge

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-8-76-NP in Northern Pacific from 09/29/1976 to 10/21/1976: 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: 169.61868
    East_Bounding_Coordinate: -159.74690
    North_Bounding_Coordinate: 52.06155
    South_Bounding_Coordinate: 21.90246

  3. What does it look like?

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

    Beginning_Date: 29-Sep-1976
    Ending_Date: 21-Oct-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: 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?

    Bob Duncan (Watchstander); Brent Dalrymple (Chief Scientist); Byron Ruppel (Geophysicist); Carrie Carpenter (Dafe Curator); Cece Roots (Watchstander); Curtis Thompson (Chief Mate); Dave Clague (Geologist); Dick Doell (Navigator); Elliot Sims (Watchstander); Gary Greene (Geologist); Harry Hill (Electronics Technician); Jim Magill (Watchstander, MDB); Karen Bachmann (Navigator); Keith Bargar (Geologist); Mark Brandon (Watchstander); Pat McCrory (Watchstander); Ralph Curtiss (Chief Engineer); Ron Kistler (Geologist); Steve Bright (Watchstander, MDB); Sven Keinanen (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: 30-Oct-2000 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L876NP.N]L876NP.011;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    

    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/l/l876np/grav/l-8-76-np.160_011
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    02/04/86 BARB DUA0:[DATA.L876NP.G]L876NP.160;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    Input was...
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L876NP.N]L876NP.011;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    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: 21-Jun-2012 (process 3 of 4)
    Magnetics Data
    06/21/2012 carolyn l-8-76-np.260_011
    
    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/l/l876np/mag/l-8-76-np.240_011
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    01/03/86 CAROLYN DRS$DATA:[L876NP.M]L876NP.240;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    272/0500 to 275/1900 (20 sec data) from
         L876NP.200 from Barb
    278/0500 to 295/0400 ( 5 min data) from
         L876NP._.MAGSX1 on TAM139
         L876NP200.DAT   on VAM139
    
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L876NP.N]L876NP.011;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    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-Nov-2000 (process 4 of 4)
    Bathymetry Data
    10/31/1998  /tiger/l/l876np/bath/l-8-76-np.335_011
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    05/20/86 BECKIE DUA0:[DATA.LEE76]TEST.335;
    DUA0:[DATA.LEE76]TEMP.EXE;
    
    02/11/86 BECKIE DISK$USERDISK:[BECKIE.TEMP]L876NP.335;
    DRB0:[DRS.BAT]BATRED.EXE;1
    This file was hand-digetized in 2-way traveltime(secs).
    It was reduced using no Matthews correction and velocity
    of sound assumed was 1500m/sec.
    
    Input was...
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L876NP.N]L876NP.011;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    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-8-76-np.011 [DRS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609290140000    197610070702000
    197610070804000    197610070804000
    197610070900000    197610072030000
    197610072316000    197610080056000
    197610080142000    197610080400000
    197610080446000    197610080630000
    197610080712000    197610090456000
    197610090642000    197610100922000
    197610101016000    197610111206000
    197610111254000    197610121942000
    197610160230000    197610160230000
    197610160356000    197610160502000
    197610160606000    197610170940000
    197610171022000    197610200114000
    197610200206000    197610200240000
    197610200322000    197610200448000
    197610200530000    197610201820000
    197610201904000    197610201944000
    197610202046000    197610210432000
    197610210526000    197610210526000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (l-8-76-np.160_011)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197610040543300    197610040928300
    197610041028300    197610052023300
    197610060928300    197610061138300
    197610061328300    197610061428300
    197610061503300    197610070133300
    197610070148300    197610070228300
    197610070238300    197610070953300
    197610071018300    197610071028300
    197610072058300    197610080103300
    197610080113300    197610081438300
    197610081448300    197610082238300
    197610090028300    197610090443300
    197610090458300    197610090653300
    197610090713300    197610120133300
    197610120903300    197610121433300
    197610121443300    197610121828300
    197610160258300    197610171713300
    197610172158300    197610200123300
    197610200143300    197610201938300
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (l-8-76-np.260_011)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609290512100    197609290512300
    197609290548200    197609300959300
    197609301045100    197609301200500
    197610010041000    197610011435400
    197610011525300    197610011934000
    197610040500000    197610051725000
    197610082345000    197610121440000
    197610160255000    197610171430000
    197610172200000    197610181750000
    197610182115000    197610191810000
    197610191825000    197610191830000
    197610191845000    197610192300000
    197610200035000    197610201130000
    197610201140000    197610201530000
    197610201630000    197610210430000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (l-8-76-np.335_011)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609292205000    197609300045000
    197609300130000    197609300145000
    197609300151000    197609300550000
    197609300655000    197609300955000
    197610040535000    197610050904000
    197610050910000    197610051805000
    197610051815000    197610060135000
    197610060143000    197610060434000
    197610060440000    197610061144000
    197610061150000    197610061603000
    197610061610000    197610070950000
    197610071800000    197610072319000
    197610072325000    197610091425000
    197610091440000    197610110414000
    197610110420000    197610111125000
    197610111131000    197610120649000
    197610120655000    197610121428000
    197610121435000    197610121644000
    197610121650000    197610121720000
    197610121735000    197610121830000
    197610160630000    197610161435000
    197610161455000    197610161529010
    197610161535000    197610161620000
    197610161655000    197610162238000
    197610162255000    197610171708000
    197610171715000    197610171754000
    197610171800000    197610201640000
    197610201647000    197610210525000
    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-8-76-NP data set <http://walrus.wr.usgs.gov/infobank/l/l876np/html/l-8-76-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: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/l/l876np/html/l-8-76-np.nav.html>

Data format: ASCII Size: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/l/l876np/html/l-8-76-np.grav.html>

Data format: ASCII Size: 1.0
Network links: <http://walrus.wr.usgs.gov/infobank/l/l876np/html/l-8-76-np.mag.html>

Data format: ASCII Size: 0.2
Network links: <http://walrus.wr.usgs.gov/infobank/l/l876np/html/l-8-76-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 12:51:28 2013