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What does this data set describe?

Title:
Geophysical data of field activity L-5-81-NC in Northern California from 05/20/1981 to 05/29/1981
Abstract:
Chief Scientists: Holly Wagner, Mike Field, Sam Clarke. Geophysical data (3dot5khz, 12khz, magnetics, 24channel, airgun, sonobuoy, uniboom, sidescansonar, dopplersonar, integratednavigation, RhoRho, miniranger, transitsatellite, gravitycore, airgunmonitor) of field activity L-5-81-NC in Northern California from 05/20/1981 to 05/29/1981, <http://walrus.wr.usgs.gov/infobank/l/l581nc/html/l-5-81-nc.meta.html>.
Supplemental_Information:

Equipment Used -
3dot5khz 3.5 khz bathymetry
12khz 12 khz bathymetry
magnetics Geometrics Proton Precession magnetometer
24channel 24-channel airgun
airgun single-channel airgun
sonobuoy
uniboom
sidescansonar
dopplersonar
integratednavigation
RhoRho
miniranger
transitsatellite
gravitycore
airgunmonitor
Publications -
Field, Michael E., and Kvenvolden, Keith A., 1987, Preliminary report on gaseous
hydrocarbons in sediment and seeps, offshore Eel River basin, California, in Schymiczek,
Herman, and Suchsland, Reinhard, eds., Tectonics, sedimentation and evolution of the Eel
River and associated coastal basins of Northern California; proceedings of a symposium:
Bakersfield, CA, San Joaquin Geological Society.<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), Coastal and Marine Geology (CMG), 20081216, Geophysical data of field activity L-5-81-NC in Northern California from 05/20/1981 to 05/29/1981: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG).

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -125.35293
    East_Bounding_Coordinate: -124.12861
    North_Bounding_Coordinate: 44.89112
    South_Bounding_Coordinate: 40.72089

  3. What does it look like?

    <http://walrus.wr.usgs.gov/infobank/l/l581nc/html/l-5-81-nc.nav.gif> (GIF)
    Trackline map of L-5-81-NC
    <http://walrus.wr.usgs.gov/infobank/l/l581nc/html/l-5-81-nc.grav.gif> (GIF)
    Gravity data trackline map of L-5-81-NC
    <http://walrus.wr.usgs.gov/infobank/l/l581nc/html/l-5-81-nc.mag.gif> (GIF)
    Magnetics data trackline map of L-5-81-NC
    <http://walrus.wr.usgs.gov/infobank/l/l581nc/html/l-5-81-nc.bath.gif> (GIF)
    Bathymetry data trackline map of L-5-81-NC
    <http://walrus.wr.usgs.gov/infobank/l/l581nc/html/l-5-81-nc.samp.gif> (GIF)
    Sampling locations map of L-5-81-NC

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

    Beginning_Date: 20-May-1981
    Ending_Date: 29-May-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: 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
    Entity_and_Attribute_Detail_Citation:
    Edited bathymetry data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, 2WayTravelTime, UncorrDepth)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f7.4, t23, f7.1)
C format:       (%4.4i%3.3i3%2.2i%1.1i %7.4f %7.1f\\n)
Naming:         .330
    Entity_and_Attribute_Overview: Gravity with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Raw gravity data from analog meter 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, UncorrGrv, Spring, <NumChan>Channels)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f7.1, t24, f7.1, t32, <NumChan>i5)
C format:       (%4.4i%3.3i3%2.2i%1.1i %7.1f %7.1f <NumChan>%5i\\n)
Naming:         .110
    Entity_and_Attribute_Overview: Magnetics with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Edited magnetics data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, MstObs, MstReg, MstRes)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f7.1, t24, f7.1, t32, f7.1)
C format:       (%4.4i%3.3i3%2.2i%1.1i %7.1f %7.1f %7.1f\\n)
Naming:         .220
    Entity_and_Attribute_Overview: Navigation with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Integrated navigation (SINS) data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, Latitude, Longitude)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, f9.5, t26, f10.5)
C format:       (%4.4i%3.3i3%2.2i%1.1i %9.5f %10.5f\\n)
Naming:         .050
    Entity_and_Attribute_Overview: Seismic Shots with Time Stamp
    Entity_and_Attribute_Detail_Citation:
    Edited seismic shot point data 
    Mnemonic:       (Year, Day, Hour, Min, Sec, Tenths, Line, Shot)
FORTRAN format: (i4.4, i3.3, 3i2.2, i1.1, t16, a5, t22, i5)
C format:       (%4.4i%3.3i3%2.2i%1.1i %5s %5i\\n)
Naming:         .420

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

  2. Who also contributed to the data set?

    Anne Jennings (Geologist); Bob Hall (Geologist); Brian Edwards (Geologist); Carol Hirozawa (Navigator); Carol Madison (Navigator); Dave Melendrez (Chief Mate); Gordon Goodfellow (Geologist); Gordon Tanner (Electronics Technician); Greg Smith (Geologist); Holly Wagner (Chief Scientist); Jim Gardner (Geologist); Jim Saltzgaber (Chief Engineer); Joe Edwards (Mechanical Technician); Kaye Kinoshita (Navigator); Keith Kvenvolden (Geochemist); Larry Kooker (Electronics Technician); Mike Field (Chief Scientist); Paul Weinberg (Mechanical Technician); Ross Voorhees (Geologist); Sam Clarke (Chief Scientist); Terry Ruff (Ship Captain); Teruki Miyazaki (Geologist); Tim Vogel (Geochemist)

  3. To whom should users address questions about the data?

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@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.

11/04/88 BECKIE DRS$DATA:[L581NC]L581NC.054;
Navigation points from the ship nav log were
"keypunched" and added to the end of L581NC.053,
which ended prematurely at 1482221510.

04/20/88 BECKIE DRS$DATA:[L581NC]L581NC.053;
One bad line deleted at end of file.

07/18/85 KAYE DRS$DATA:[L581NC.N]L581NC.052;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
Original file name is l581nc.sinsc1._.

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

    Date: 31-Oct-1998 (process 2 of 4)
    Gravity Data 
    10/31/1998  /tiger/l/l581nc/grav/l-5-81-nc.111_054
/bear/programs/edit/automerge/automerge

Input was...
Converted to time format with year at start.

10/11/85 BARB DRS$DATA:[L581NC.G]L581NC.111;
DRB0:[DRS.REFMT]REFORMAT.EXE;4

Input was...
Converted to time format with year at start.

11/04/88 BECKIE DRS$DATA:[L581NC]L581NC.054;
Navigation points from the ship nav log were
"keypunched" and added to the end of L581NC.053,
which ended prematurely at 1482221510.

04/20/88 BECKIE DRS$DATA:[L581NC]L581NC.053;
One bad line deleted at end of file.

07/18/85 KAYE DRS$DATA:[L581NC.N]L581NC.052;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
Original file name is l581nc.sinsc1._.

time, lat, long, time(sec) to nearest nav fix, data values

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

    Date: 31-Oct-1998 (process 3 of 4)
    Magnetics Data 
    10/31/1998  /tiger/l/l581nc/mag/l-5-81-nc.220_054
/bear/programs/edit/automerge/automerge

Input was...
Converted to time format with year at start.

01/24/90 CAROLYN DRS$DATA:[L581NC]L581NC.220;1
DUA0:[DRS.MAG]MAGRED.EXE;5
Edited magnetics data

01/24/90 CAROLYN DRS$DATA:[L581NC]L581NC.203;1
DUA0:[DRS.FILT]FILTER.EXE;1
Raw magnetics data

01/24/90 CAROLYN DRS$DATA:[L581NC]L581NC.202;1
DUA0:[DRS.EDIT]MERGEIT.EXE;3
Raw magnetics data

01/24/90 CAROLYN DRS$DATA:[L581NC]L581NC.201;1
DUA0:[DRS.DSMPL]METAMUCIL.EXE;
Raw magnetics data

11/19/85 CAROLYN DRS$DATA:[L581NC.M]L581NC.200;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was L581NC._.MAGSB1       on TAM279
was L581NC220.DAT         on VAM279

11/19/85 CAROLYN DRS$DATA:[L581NC.M]L581NC.200;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
was L581NC._.MAGSB1       on TAM279
was L581NC220.DAT         on VAM279

11/04/88 BECKIE DRS$DATA:[L581NC]L581NC.054;
Navigation points from the ship nav log were
"keypunched" and added to the end of L581NC.053,
which ended prematurely at 1482221510.

04/20/88 BECKIE DRS$DATA:[L581NC]L581NC.053;
One bad line deleted at end of file.

07/18/85 KAYE DRS$DATA:[L581NC.N]L581NC.052;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
Original file name is l581nc.sinsc1._.

Input was...
Converted to time format with year at start.

11/04/88 BECKIE DRS$DATA:[L581NC]L581NC.054;
Navigation points from the ship nav log were
"keypunched" and added to the end of L581NC.053,
which ended prematurely at 1482221510.

04/20/88 BECKIE DRS$DATA:[L581NC]L581NC.053;
One bad line deleted at end of file.

07/18/85 KAYE DRS$DATA:[L581NC.N]L581NC.052;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
Original file name is l581nc.sinsc1._.

time, lat, long, time(sec) to nearest nav fix, data values

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

    Date: 31-Oct-1998 (process 4 of 4)
    Bathymetry Data 
    10/31/1998  /tiger/l/l581nc/bath/l-5-81-nc.330_054
/bear/programs/edit/automerge/automerge

Input was...
Converted to time format with year at start.

01/25/90 BECKIE DUA0:[DATA.L581NC]L581NC.330;1
DUA0:[DRS.BAT]BATRED.EXE;2
Edited bathymetry data

08/30/85 BECKIE DUA0:[DATA.L581NC.B]L581NC.301;
DRB0:[DRS.DSMPL]DESAMTIME.EXE;1
This file is 2 min. digitrack bathymetry.

Input was...
Converted to time format with year at start.

11/04/88 BECKIE DRS$DATA:[L581NC]L581NC.054;
Navigation points from the ship nav log were
"keypunched" and added to the end of L581NC.053,
which ended prematurely at 1482221510.

04/20/88 BECKIE DRS$DATA:[L581NC]L581NC.053;
One bad line deleted at end of file.

07/18/85 KAYE DRS$DATA:[L581NC.N]L581NC.052;
DRB0:[DRS.REFMT]REFORMAT.EXE;4
Original file name is l581nc.sinsc1._.

time, lat, long, time(sec) to nearest nav fix, data values

    Person who carried out this activity:

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

  3. What similar or related data should the user be aware of?

    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG), Unknown, USGS/CMG Information Bank: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG).

    Online Links:

    Other_Citation_Details: Updated daily

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-5-81-nc.054 [SINS])
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198105201707000    198105290900000
198105290914000    198105290914000
198105290930000    198105290930000
198105290945000    198105290945000
198105291000000    198105291000000
198105291015000    198105291015000
198105291026000    198105291030000
198105291041000    198105291046000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Gravity Data (l-5-81-nc.111_054)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198105231246360    198105240204280
198105242313040    198105250607360
198105250615440    198105251514200
198105251520120    198105251644200
198105252032000    198105260329000
198105260506520    198105261309200
198105270635160    198105272209200
198105280254560    198105280303160
198105280356240    198105280357560
198105280954000    198105281158000
198105281337520    198105281338400
198105281623040    198105281653120
198105281725240    198105281726160
198105282035280    198105282107360
198105282140400    198105282141160
198105290021560    198105290052160
198105290123360    198105290124160
198105290406440    198105290437200
198105290510200    198105290511200
198105290716520    198105291046000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Magnetics Data (l-5-81-nc.220_054)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198105231248000    198105240204200
198105242313200    198105251644200
198105252032000    198105260329000
198105260507000    198105261237000
198105270635200    198105272207400
198105272346400    198105291046000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Bathymetry Data (l-5-81-nc.330_054)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198105231246360    198105231446360
198105231453360    198105240203280
198105242313040    198105250042240
198105250101280    198105250605560
198105250615440    198105251513000
198105251520120    198105251538160
198105251548160    198105251643200
198105252032000    198105252049000
198105252057000    198105260328400
198105260506520    198105261309000
198105270636160    198105271502480
198105271508440    198105272210000
198105272346280    198105280108360
198105280114320    198105281441240
198105281449280    198105282021560
198105282028560    198105290140560
198105290147560    198105290408000
198105290414000    198105290702120
198105290710120    198105291045200
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Seismic Shots Data (l-5-81-nc.421_054)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
198105231304330    198105232117500
198105232223000    198105232223000
198105232229240    198105240647000
198105240732190    198105240755500
198105242344200    198105250652400
198105250750150    198105251700278
198105251733350    198105251954203
198105252018450    198105260254570
198105260324510    198105260616368
198105260651310    198105261313429
198105261402080    198105261500358
198105270729010    198105271145590
198105271215480    198105272227560
198105272233012    198105272233012
198105272238064    198105272238064
198105272243116    198105272243116
198105272248168    198105272248168
198105272253220    198105280313030
198105280325200    198105282009160
198105282037100    198105282306540
198105282330200    198105290100110
198105290123090    198105290320270
198105290344370    198105291041090
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), Coastal and Marine Geology (CMG)
    c/o Clint Steele
    Data Acquisition, Processing, and Storage (DAPS) Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    csteele@usgs.gov

  2. What's the catalog number I need to order this data set?

    Downloadable Data L-5-81-NC data set

  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?

Who wrote the metadata?

Dates:
Last modified: 16-Dec-2008
Metadata author:
U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
c/o Clint Steele
Data Acquisition, Processing, and Storage (DAPS) Group Leader
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA

(650) 329-5055 (voice)
(650) 329-5190 (FAX)
csteele@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.9.2 on Tue Dec 16 03:32:53 2008