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What does this data set describe?

Title:
Geophysical data of field activity L-12-82-WG in Western Gulf of Alaska from 09/22/1982 to 10/05/1982
Abstract:
Chief Scientists: Steve Lewis, Terry Bruns. Geophysical data (3dot5khz, 12khz, gravity, uniboom, airgun, airgunmonitor, courserecorder, integratednavigation, RhoRho, transitsatellite, 24channel) of field activity L-12-82-WG in Western Gulf of Alaska from 09/22/1982 to 10/05/1982, <http://walrus.wr.usgs.gov/infobank/l/l1282wg/html/l-12-82-wg.meta.html>.
Supplemental_Information:

Equipment Used -
3dot5khz 3.5 khz bathymetry
12khz 12 khz bathymetry
gravity
uniboom
airgun single-channel airgun
airgunmonitor single-channel airgun monitor
courserecorder
integratednavigation
RhoRho
transitsatellite
24channel
Notes -
<a href="<http://geology.about.com/library/weekly/aa081102a.htm>">Photos and reminiscences by Andy Alden</a>

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-12-82-WG in Western Gulf of Alaska from 09/22/1982 to 10/05/1982: 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: -166.52713
    East_Bounding_Coordinate: -158.30482
    North_Bounding_Coordinate: 55.33219
    South_Bounding_Coordinate: 52.53880

  3. What does it look like?

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

    Beginning_Date: 22-Sep-1982
    Ending_Date: 05-Oct-1982
    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: Western Gulf of Alaska
      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?

    Aaron Dunwald (Chief Engineer); Al McClenaghan (Ship Captain); Andy Alden (Watchstander); Chris Wilson (Navigator); Dan Conley (Watchstander); Dave Melendrez (Chief Mate); Donna Blackman (Watchstander); Greg Smith (Geophysicist); Holly Ryan (Watchstander); Jack Swenson (Mechanical Technician); Jim Vaughan (Electronics Technician); John Fife (Watchstander); Kaye Kinoshita (Navigator); Larry Kooker (Electronics Technician); Paul Wenberg (Mechanical Technician); Steve Lewis (Chief Scientist, Lamont-Doherty); Sue Hunt (Navigator); Terry Bruns (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.
    
    07/02/85 KAYE DRS$DATA:[L1282WG.N]LC82WG.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l1282wg.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: 31-Oct-1998 (process 2 of 4)
    Gravity Data
    10/31/1998  /tiger/l/l1282wg/grav/l-12-82-wg.151_052
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    10/10/85 BARB DRS$DATA:[LC82WG.G]LC82WG.151;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    
    Input was...
    Converted to time format with year at start.
    
    07/02/85 KAYE DRS$DATA:[L1282WG.N]LC82WG.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l1282wg.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-12-82-wg.220_052
    
    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/l1282wg/mag/l-12-82-wg.200_052
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    10/03/85 CAROLYN DRS$DATA:[L1282BS.M]LC82WG.200;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    was L1282WG._.MAGSB1 on TAM415
    was LB82WG240.DAT    on VAM415
    
    Converted to time format with year at start.
    
    07/02/85 KAYE DRS$DATA:[L1282WG.N]LC82WG.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l1282wg.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: 31-Oct-1998 (process 4 of 4)
    Bathymetry Data
    10/31/1998  /tiger/l/l1282wg/bath/l-12-82-wg.320_052
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    07/16/85 BECKIE DUA0:[DATA.L1282WG.B]LC82WG.320;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    I BELIEVE THIS FILE TO BE HAND-DIGETIZED BATHY IN 2-WAY
    TRAVEL-TIME.  I DO NOT KNOW WHAT MATHEWS AREA WAS USED
    TO CALCULATE THE CORRECTED DEPTHS.  R.LARSEN
    
    Input was...
    Converted to time format with year at start.
    
    07/02/85 KAYE DRS$DATA:[L1282WG.N]LC82WG.052;
    DRB0:[DRS.REFMT]REFORMAT.EXE;4
    Original file name is l1282wg.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-12-82-wg.052 [SINS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198209222208000    198209251241200
    198209251250390    198209280116290
    198209280148000    198210052144000
    198210052247000    198210052247000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (l-12-82-wg.151_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198209230336000    198209240016480
    198209240026000    198209240047000
    198209240058000    198209240142000
    198209250000120    198209250000120
    198209260000000    198209260549480
    198209260839000    198209261517000
    198209261538000    198209261653000
    198209261737240    198209261915240
    198209261936240    198209262016240
    198209262031240    198209262123240
    198209262223240    198209262324240
    198209262351240    198209270236240
    198209270253240    198209271115000
    198209271142000    198209271951000
    198209272023480    198209272138000
    198209272253540    198209272253540
    198209281312180    198209281312180
    198209282040180    198209282040180
    198209282227240    198209282351240
    198209290009240    198209290840000
    198209291108000    198209292105120
    198209292134120    198209292325120
    198209292330540    198209300109540
    198209300208540    198209300732540
    198209300819480    198209301600000
    198209301611480    198209301752480
    198209301804480    198209302136480
    198209302152480    198210010222000
    198210010258240    198210011655000
    198210011703120    198210012018420
    198210012037420    198210020157420
    198210020251420    198210020929120
    198210020950120    198210021119120
    198210021151120    198210022046540
    198210022144000    198210030648480
    198210030741480    198210031942480
    198210032040480    198210040024480
    198210040051480    198210040310420
    198210040325360    198210042202240
    198210042213240    198210050134360
    198210050155360    198210050433000
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (l-12-82-wg.220_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198209230916570    198209240022210
    198209240030570    198209240915250
    198209240921490    198209241808050
    198209241818130    198209251154100
    198209251159260    198209260554580
    198209260844020    198209261658220
    198209261742260    198209271956140
    198209272028460    198209280131300
    198209282100190    198209300738170
    198209300824450    198210022051530
    198210022149010    198210040030450
    198210040056490    198210050331290
    198210050631300    198210052030500
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (l-12-82-wg.320_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (l-12-82-wg.422_052)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    198209230950150    198209231801360
    198209231811240    198209231817090
    198209231833290    198209231910080
    198209231944280    198209232022110
    198209232059590    198209232136270
    198209232214290    198209232253390
    198209232334500    198209240013140
    198209240056480    198209240142090
    198209240230370    198209240546310
    198209240645060    198209241433310
    198209241525280    198209242059370
    198209242110000    198209242153490
    198209242218500    198209251237530
    198209251330450    198209251648000
    198209251715510    198209251755190
    198209251823490    198209251838230
    198209251904470    198209260937180
    198209261003080    198209261048030
    198209261120070    198209261207290
    198209261255430    198209261348500
    198209261440060    198209261520060
    198209261654300    198209261741250
    198209261824540    198209262115170
    198209262220110    198209271118080
    198209271205160    198209280054120
    198209282027120    198209290134460
    198209290225140    198209290733510
    198209290757190    198209292100030
    198209292140240    198209300114470
    198209300220180    198209301059540
    198209301200290    198209301345470
    198209301420120    198209302241590
    198209302320070    198210010154590
    198210010255090    198210012019330
    198210012105350    198210020200050
    198210020300430    198210020935590
    198210021003170    198210021119540
    198210021215190    198210030644410
    198210030745240    198210031950200
    198210032039570    198210040307030
    198210040337240    198210041915190
    198210041940000    198210050110030
    198210050205200    198210050329540
    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-12-82-WG data set <http://walrus.wr.usgs.gov/infobank/l/l1282wg/html/l-12-82-wg.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/l1282wg/html/l-12-82-wg.nav.html>

Data format: ASCII Size: 1.0
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1282wg/html/l-12-82-wg.grav.html>

Data format: ASCII Size: 1.4
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1282wg/html/l-12-82-wg.mag.html>

Data format: ASCII Size: 0.3
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1282wg/html/l-12-82-wg.bath.html>

Data format: ASCII Size: 1.9
Network links: <http://walrus.wr.usgs.gov/infobank/l/l1282wg/html/l-12-82-wg.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 12:50:26 2013