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What does this data set describe?

Title:
Geophysical data of field activity L-4-77-NC in Northern California from 05/10/1977 to 05/21/1977
Abstract:
Chief Scientist: Dave McCulloch. Geophysical data (LoranC, dopplersonar, 12khz, magnetics, Burgairgun, gradiometer, gravity, airgun, 24channel, 3dot5khz, integratednavigation, uniboom, airgunmonitor) of field activity L-4-77-NC in Northern California from 05/10/1977 to 05/21/1977, <http://walrus.wr.usgs.gov/infobank/l/l477nc/html/l-4-77-nc.meta.html>.
Supplemental_Information:

Equipment Used -
LoranC
dopplersonar
12khz bathymetry Raytheon
magnetics Servoriter II
Burgairgun Burg processor
gradiometer
gravity shipboard gravity Servoriter II
airgun single-channel airgun
24channel 24-channel airgun
3dot5khz Raytheon
integratednavigation
uniboom Raytheon
airgunmonitor
Publications -
McCulloch, David S., Mann, Dennis M., Ryan, Holly F., and Sliter, Ray W., 1986, Multichannel
seismic-reflection profiles collected in 1977 off the Northern California and Oregon coast:
U.S. Geological Survey Open-File Report 86-0406, 4 p., 1 sheet.<BR>

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/>, 20131101, Geophysical data of field activity L-4-77-NC in Northern California from 05/10/1977 to 05/21/1977: 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: -125.91021
    East_Bounding_Coordinate: -122.97494
    North_Bounding_Coordinate: 42.73476
    South_Bounding_Coordinate: 37.70722

  3. What does it look like?

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

    Beginning_Date: 10-May-1977
    Ending_Date: 21-May-1977
    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 California
      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?

    Al Goodman (Watchstander); Alan Long (Watchstander); Art Conradi (Watchstander); Cheryl Price (Watchstander); Chris Gutmacher (Dafe Curator); Curtis Thompson (Chief Mate); Dave McCulloch (Chief Scientist); Dave Rubin (Watchstander); Dave Wilson (Watchstander); Dennis Mann (Watchstander); Gary Younse (Watchstander); George Asuncion (Electronics Technician); Glen Barker (Mechanical Technician); Henry Cullins (Watchstander); John Simpson (Chief Engineer); Jon Erickson (Mechanical Technician); Karen Bachmann (Watchstander); Mary Spilker (Watchstander); Steve Davenport (Watchstander); Terry Kelley (Electronics Technician); W.T. 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: 19-Jan-1996 (process 1 of 4)
    Navigation Data
    Converted to time format with year at start.
    
    

    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/l477nc/grav/l-4-77-nc.111_051
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    11/27/85 BARB DUA0:[DATA.L477NC.G]L477NC.111
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    
    Data for 1371700000 to 1432100000 is not includes in this file. That
     data is lost.
    
    Input was...
    Converted to time format with year at start.
    
    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-4-77-nc.260_051
    
    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/l477nc/mag/l-4-77-nc.240_051
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    02/26/86 CAROLYN DRS$DATA:[L477NC.M]L477NC.240;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    131/0137-137/1430 was F4.OUT on 77BKUP
    137/1430-138/0327 was F.1 from Clint
    138/0336-139/1630 was F2.OUT on 77BKUP
    139/1635-141/2120 was F3.;1  on 77BKUP
    
    Converted to time format with year at start.
    
    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/l/l477nc/bath/l-4-77-nc.305_051
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    01/30/86 BECKIE DISK$USERDISK:[BECKIE.TEMP]L477NC.305;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    I think this file was hand-digetized in meters.
    
    Input was...
    Converted to time format with year at start.
    
    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:

    Other_Citation_Details:
    McCulloch, David S., Mann, Dennis M., Ryan, Holly F., and Sliter, Ray W., 1986, Multichannel seismic-reflection profiles collected in 1977 off the Northern California and Oregon coast: U.S. Geological Survey Open-File Report 86-0406, 4 p., 1 sheet.



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-4-77-nc.051 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197705100958000    197705160503000
    197705160510000    197705170455000
    197705170626000    197705212138000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (l-4-77-nc.111_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197705100958100    197705101144300
    197705101151300    197705101152500
    197705101201100    197705101202100
    197705101338000    197705131750400
    197705131808200    197705140831300
    197705140902500    197705171656400
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (l-4-77-nc.260_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197705110137200    197705110827540
    197705111136410    197705112117080
    197705112335120    197705120631470
    197705121333410    197705130119180
    197705130128580    197705142348340
    197705150223440    197705160520010
    197705160527210    197705160642110
    197705160648260    197705180327550
    197705180336220    197705180626270
    197705181153560    197705190805390
    197705191134380    197705200857470
    197705201122560    197705210416060
    197705210444280    197705210611460
    197705210827180    197705212120570
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (l-4-77-nc.305_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197705101200000    197705110530000
    197705111506000    197705120500000
    197705121400000    197705121430000
    197705130935000    197705131000000
    197705131230000    197705131250000
    197705141540000    197705142300000
    197705150850000    197705160430000
    197705160530000    197705160600000
    197705160750000    197705161838000
    197705161900000    197705161945000
    197705162006000    197705190700000
    197705191330000    197705210315000
    197705211330000    197705212032000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (l-4-77-nc.421_051)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197705100958110    197705101144370
    197705101151350    197705101357410
    197705101841110    197705101905390
    197705101911000    197705102211260
    197705102312540    197705102345450
    197705110030030    197705110032080
    197705110040280    197705110443580
    197705110503470    197705110931370
    197705111003310    197705111027200
    197705111102300    197705112103550
    197705112227260    197705112259490
    197705112325020    197705120118250
    197705120135180    197705120750540
    197705120934480    197705121124100
    197705121156010    197705122025010
    197705122052230    197705122231140
    197705130147120    197705131007520
    197705131052270    197705131156510
    197705131232020    197705131933590
    197705132033420    197705132219380
    197705132253160    197705140017550
    197705140107260    197705140331000
    197705140426060    197705140542120
    197705140621220    197705140734180
    197705140831070    197705141637140
    197705141644180    197705141712050
    197705142200210    197705142338340
    197705150243500    197705151324010
    197705151421190    197705151950150
    197705152203150    197705160443120
    197705160532520    197705160919570
    197705161007100    197705161240360
    197705161302360    197705161354160
    197705161450260    197705161756100
    197705161807160    197705161852330
    197705162019000    197705162019000
    197705162024400    197705162024400
    197705162047410    197705162320300
    197705162327310    197705162334520
    197705162344320    197705170240240
    197705170248230    197705170321570
    197705170330370    197705170421300
    197705170439370    197705170530510
    197705170616480    197705171610040
    197705171659470    197705172018580
    197705172051140    197705172306370
    197705172322350    197705181023430
    197705181111040    197705181915180
    197705182018520    197705182102420
    197705182128500    197705190900440
    197705190929450    197705191024160
    197705191100050    197705192112580
    197705192209490    197705200247430
    197705201015030    197705201950490
    197705202041530    197705202143570
    197705202200390    197705210525200
    197705210546380    197705210614100
    197705210634440    197705210813390
    197705210839240    197705211117080
    197705211152090    197705211753520
    197705211815480    197705212137460
    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-4-77-NC data set <http://walrus.wr.usgs.gov/infobank/l/l477nc/html/l-4-77-nc.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/l477nc/html/l-4-77-nc.nav.html>

Data format: ASCII Size: 5.1
Network links: <http://walrus.wr.usgs.gov/infobank/l/l477nc/html/l-4-77-nc.grav.html>

Data format: ASCII Size: 1.3
Network links: <http://walrus.wr.usgs.gov/infobank/l/l477nc/html/l-4-77-nc.mag.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/l/l477nc/html/l-4-77-nc.bath.html>

Data format: ASCII Size: 2.5
Network links: <http://walrus.wr.usgs.gov/infobank/l/l477nc/html/l-4-77-nc.seis.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 01-Nov-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 Fri Nov 1 14:00:22 2013