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What does this data set describe?

Title:
Geophysical data of field activity L-7-76-BS in Bering Sea, Alaska from 09/03/1976 to 09/10/1976
Abstract:
Chief Scientist: Mike Marlow. Geophysical data (3dot5khz, sparker, dopplersonar, gravity, gradiometer, integratednavigation, transitsatellite, uniboom, 24channel, airgun, airgunmonitor) of field activity L-7-76-BS in Bering Sea, Alaska from 09/03/1976 to 09/10/1976, <http://walrus.wr.usgs.gov/infobank/l/l776bs/html/l-7-76-bs.meta.html>.
Supplemental_Information:

Equipment Used -
3dot5khz 3.5 khz bathymetry
sparker 160 kj sparker
dopplersonar
gravity shipboard gravity
gradiometer
integratednavigation
transitsatellite
uniboom
24channel 24-channel seismic
airgun single-channel airgun
airgunmonitor

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-7-76-BS in Bering Sea, Alaska from 09/03/1976 to 09/10/1976: 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: -176.63771
    East_Bounding_Coordinate: -165.40160
    North_Bounding_Coordinate: 64.48392
    South_Bounding_Coordinate: 51.85725

  3. What does it look like?

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

    Beginning_Date: 03-Sep-1976
    Ending_Date: 10-Sep-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: Bering Sea, 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>


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 Montez (Mechanical Technician, SEC); Carrie Carpenter (Dafe Curator); Chris Carlson (Watchstander); Dave Aldridge (Watchstander); Gordon Hess (Navigator); Joe Edwards (Mechanical Technician); Juan Richardson (Watchstander); Karen Bachmann (Watchstander); Kim Bailey (Watchstander); Mike Marlow (Chief Scientist); Paul Twitchel (Mechanical Technician); Paula Shryock (Watchstander); Terry Kelley (Electronics Technician); Tom Thornton (Electronics Technician)

  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.
    
    01/31/86 KAYE DUA0:[DATA.L776BS.N]L776BS.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/l776bs/grav/l-7-76-bs.165_011
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    05/02/86 CLINT DUA0:[DATA.L776BS]L776BS.165;
    DRB0:[CLINT]REFMTJCGRV.EXE;
    reformated from JChilds file l776.smgrv
    
    Input was...
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L776BS.N]L776BS.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-Jun-2012 (process 3 of 4)
    Magnetics Data
    06/20/2012 carolyn l-7-76-bs.220_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/l776bs/mag/l-7-76-bs.200_011
    /bear/programs/edit/automerge/automerge
    
    Converted to time format with year at start.
    
    01/03/86 CAROLYN DRS$DATA:[L776BS.M]L776BS.200;
    DRB0:[DRS.REFMT]REFORMAT.EXE;5
    from Barb from grvsd1 from VAM087 - couldn't read second mag field
    253/0332-253/0418 & 253/1932-253/2000 from L776BS.DRCPE1.MAGSD1 on TAM087
                                      also was L776BS240.DAT        on VAM087
    
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L776BS.N]L776BS.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: 31-Oct-1998 (process 4 of 4)
    Bathymetry Data
    10/31/1998  /tiger/l/l776bs/bath/l-7-76-bs.335_011
    /bear/programs/edit/automerge/automerge
    
    Input was...
    Converted to time format with year at start.
    
    02/11/86 BECKIE DISK$USERDISK:[BECKIE.TEMP]L776BS.335;
    DRB0:[DRS.BAT]BATRED.EXE;1
    Velocity of sound assumed in reduction: 1500m/sec
    for 2-way traveltime.
    
    02/11/86 BECKIE DISK$USERDISK:[BECKIE.TEMP]L776BS.310;
    DRB0:[DRS.NGDC]UNREFNGDC.EXE;
    This file was hand-digetized in 2-way traveltime(secs).
    
    Input was...
    Converted to time format with year at start.
    
    01/31/86 KAYE DUA0:[DATA.L776BS.N]L776BS.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-7-76-bs.011 [DRS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609032243400    197609061839000
    197609061848400    197609061939000
    197609062013500    197609062132000
    197609062203100    197609080945400
    197609080955100    197609081955500
    197609082205100    197609090330400
    197609090420000    197609091931100
    197609092001400    197609101518500
    197609101530400    197609101535300
    197609101633200    197609101633200
    197609101725300    197609101903300
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Gravity Data (l-7-76-bs.165_011)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609032243420    197609040247420
    197609040630180    197609061455120
    197609061500300    197609061835000
    197609061844420    197609061850420
    197609062216120    197609080940420
    197609080950120    197609081156000
    197609081201180    197609081929480
    197609090001120    197609090325420
    197609090416000    197609091926120
    197609091957420    197609101513480
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Magnetics Data (l-7-76-bs.220_011)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609032243400    197609040612100
    197609050047400    197609061840200
    197609061848400    197609061940400
    197609062013500    197609062133200
    197609062203100    197609080947200
    197609080955100    197609081956500
    197609082205100    197609101519500
    197609101725300    197609101903300
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (l-7-76-bs.335_011)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    197609032335000    197609032335000
    197609032359000    197609032359000
    197609040030000    197609040030000
    197609040116000    197609040116000
    197609040156000    197609040156000
    197609040240000    197609040240000
    197609040334000    197609040334000
    197609040425000    197609040425000
    197609040527000    197609040527000
    197609040600000    197609040958000
    197609041012000    197609041012000
    197609041030000    197609041104000
    197609041127000    197609041300000
    197609041313000    197609041451000
    197609041504000    197609042159000
    197609042220000    197609051630000
    197609051702000    197609061800000
    197609062102000    197609062102000
    197609062113000    197609062231000
    197609062310000    197609072230000
    197609072241000    197609080432000
    197609080636000    197609081046000
    197609081747000    197609081805000
    197609081821000    197609081849000
    197609081904000    197609081904000
    197609081917000    197609081917000
    197609081933000    197609081941000
    197609081953000    197609082002000
    197609082013000    197609082133000
    197609082144000    197609082144000
    197609082156000    197609082156000
    197609082211000    197609082211000
    197609082224000    197609082224000
    197609082237000    197609082237000
    197609082249000    197609082306000
    197609082319000    197609082339000
    197609082355000    197609082355000
    197609090012000    197609090012000
    197609090027000    197609090027000
    197609090040000    197609090040000
    197609090054000    197609090054000
    197609090107000    197609090107000
    197609090119000    197609090139000
    197609090151000    197609090151000
    197609090202000    197609090202000
    197609090218000    197609090223000
    197609090239000    197609090239000
    197609090254000    197609090254000
    197609090309000    197609090309000
    197609090326000    197609090326000
    197609090403000    197609090403000
    197609090419000    197609090419000
    197609090431000    197609090431000
    197609090445000    197609090445000
    197609090503000    197609090503000
    197609090521000    197609090610000
    197609090621000    197609090621000
    197609090632000    197609090632000
    197609090643000    197609090656000
    197609090707000    197609090707000
    197609090719000    197609090719000
    197609090731000    197609090806000
    197609090817000    197609090843000
    197609090854000    197609090854000
    197609090905000    197609090905000
    197609090918000    197609090937000
    197609090950000    197609090950000
    197609091004000    197609091004000
    197609091015000    197609091026000
    197609091038000    197609091038000
    197609091051000    197609091051000
    197609091102000    197609091102000
    197609091118000    197609091118000
    197609091132000    197609091132000
    197609091149000    197609091149000
    197609091200000    197609091208000
    197609091219000    197609091229000
    197609091240000    197609091240000
    197609091252000    197609091335000
    197609091352000    197609091409000
    197609091420000    197609091420000
    197609091434000    197609091458000
    197609091514000    197609091522000
    197609091534000    197609091544000
    197609091555000    197609091555000
    197609091607000    197609091607000
    197609091621000    197609091621000
    197609091633000    197609091633000
    197609091645000    197609091645000
    197609091659000    197609091659000
    197609091713000    197609091713000
    197609091728000    197609091738000
    197609091753000    197609091809000
    197609091824000    197609091824000
    197609091835000    197609091844000
    197609091856000    197609091916000
    197609092048000    197609092116000
    197609092129000    197609092129000
    197609092141000    197609092141000
    197609092158000    197609092158000
    197609092216000    197609092216000
    197609092234000    197609092234000
    197609092250000    197609092250000
    197609092305000    197609092308000
    197609092320000    197609092336000
    197609092349000    197609092349000
    197609100005000    197609100005000
    197609100020000    197609100020000
    197609100038000    197609100038000
    197609100057000    197609100057000
    197609100114000    197609100114000
    197609100137000    197609100137000
    197609100157000    197609100157000
    197609100221000    197609100221000
    197609100234000    197609100250000
    197609100304000    197609100338000
    197609100352000    197609100519000
    197609100546000    197609100615000
    197609100651000    197609100851000
    197609100917000    197609100929000
    197609100946000    197609101020000
    197609101035000    197609101039000
    197609101051000    197609101053000
    197609101105000    197609101107000
    197609101118000    197609101120000
    197609101132000    197609101149000
    197609101200000    197609101223000
    197609101235000    197609101236000
    197609101247000    197609101304000
    197609101318000    197609101320000
    197609101336000    197609101540000
    197609101553000    197609101654000
    197609101707000    197609101721000
    197609101733000    197609101740000
    197609101751000    197609101818000
    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-7-76-BS data set <http://walrus.wr.usgs.gov/infobank/l/l776bs/html/l-7-76-bs.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/l776bs/html/l-7-76-bs.nav.html>

Data format: ASCII Size: 0.4
Network links: <http://walrus.wr.usgs.gov/infobank/l/l776bs/html/l-7-76-bs.grav.html>

Data format: ASCII Size: 1.5
Network links: <http://walrus.wr.usgs.gov/infobank/l/l776bs/html/l-7-76-bs.mag.html>

Data format: ASCII Size: 0.1
Network links: <http://walrus.wr.usgs.gov/infobank/l/l776bs/html/l-7-76-bs.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)
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