- Title:
-
Geophysical data of field activity L-3-78-EG in Eastern Gulf
of Alaska from 06/22/1978 to 07/04/1978
- Abstract:
-
Chief Scientist: Terry Bruns. Geophysical data (airgun,
3dot5khz, minisparker, gravity, gradiometer, sonobuoy,
airgunmonitor, magnetics, uniboom, 12khz, Digitrack,
dopplersonar, integratednavigation, LoranC, RhoRho, radar,
transitsatellite, 24channel) of field activity L-3-78-EG in
Eastern Gulf of Alaska from 06/22/1978 to 07/04/1978,
<http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.meta.html>.
- Supplemental_Information:
-
Equipment Used -
airgun single-channel airgun
3dot5khz 3.5 khz bathymetry
minisparker
gravity
gradiometer
sonobuoy
airgunmonitor single-channel airgun monitor
magnetics magnetometer
uniboom
12khz 12 khz bathymetry
Digitrack
dopplersonar
integratednavigation
LoranC
RhoRho Loran C Rho-Rho
radar
transitsatellite
24channel 24-channel seismic
Publications -
Bruns, Terry R., Mann, Dennis M., and Sliter, Ray W., 1987, Multichannel
seismic-reflection profiles collected in 1978 in the eastern Gulf of Alaska:
U.S. Geological Survey Open-File Report 87-0148, 5 p. 1 sheet.
Bruns, T.R., and Carlson, P.R., 1987, Geology and petroleum potential of the
southeast Alaska continental margin, in D. Scholl, A. Grantz, and J. Vedder,
editors, Geology and resource potential of the continental margin of W. No.
America and adjacent ocean basins: Houston, TX, Circum-Pacific Council for
Energy and Mineral Resources Earth Science Series, v. 6, p. 269-282.
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.).
- 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/>, 20130331, Geophysical data of field activity L-3-78-EG in Eastern Gulf of Alaska from 06/22/1978 to 07/04/1978: U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.
Online Links:
- What geographic area does the data set cover?
- West_Bounding_Coordinate: -147.13863
- East_Bounding_Coordinate: -133.89804
- North_Bounding_Coordinate: 59.18395
- South_Bounding_Coordinate: 54.65640
- What does it look like?
- <http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.nav.gif> (GIF)
-
Trackline map of L-3-78-EG
- <http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.grav.gif> (GIF)
-
Gravity data trackline map of L-3-78-EG
- <http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.mag.gif> (GIF)
-
Magnetics data trackline map of L-3-78-EG
- <http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.bath.gif> (GIF)
-
Bathymetry data trackline map of L-3-78-EG
- <http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.seis.gif> (GIF)
-
Seismic shot point data trackline map of L-3-78-EG
- Does the data set describe conditions during a particular time period?
- Beginning_Date: 22-Jun-1978
- Ending_Date: 04-Jul-1978
- Currentness_Reference: ground condition
- What is the general form of this data set?
- How does the data set represent geographic features?
- How are geographic features stored in the data set?
- Indirect_Spatial_Reference: Eastern Gulf of Alaska
This is a Point data set.
It contains the following vector data types (SDTS terminology):
- 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
- 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 are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Who also contributed to the data set?
Beckie Larsen (Dafe Curator);
Charlie Fitts (Navigator);
Dave Aldridge (Watchstander);
Dave Wilson (Geologist);
Dennis Mann (Chief Watchstander);
George Asunsion (Electronics Technician);
Glen Barker (Mechanical Technician);
Jack Lee (Electronics Technician);
Jeff Rupert (Mechanical Technician);
Jim Mackrow (Chief Mate);
John Dunlavey (Navigator);
K. Smith (Chief Engineer);
Karen Denman (Watchstander);
Ken Bayer (Geophysicist);
Larry Maxey (Watchstander, Conservation);
Paula Mackrow (Navigator);
Phyllis Swenson (Watchstander);
Terry Bruns (Chief Scientist);
Terry Ruff (Ship Captain)
- To whom should users address questions about the data?
These data and information are intended for science
researchers, students from elementary through
college, policy makers, and general public.
- From what previous works were the data drawn?
- How were the data generated, processed, and modified?
- Date: 27-May-2011 (process 1 of 4)
-
Navigation Data
/infobank/l/l378eg/nav/l-3-78-eg.051
time/lat/long style, multi-record, in caps, without tabs
Note: lines2times generated FAKE TIMES for line/shot point records
Input was...
05/27/2011 carolyn /infobank/l/l378eg/seis/l-3-78-eg.410_051
/infobank/programs/time/lines2times/lines2times
time/lat/long style, multi-record, in caps, without tabs
temporal domain
Note: lines2times generated FAKE TIMES for line/shot point records
05/23/2011 florence /infobank/l/l378eg/seis/l-3-78-eg.410_fw
placeholder 410 file formatted for Arc ffid.aml (produces arc/actidSEIS2)
5/23/2011 fwong@usgs.gov
string, lat, lon, line, ffid, shot, cdp
needs to be updated to regular Infobank format
1 2 3 4 5 6 7 8 9
3456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
Person who carried out this activity:
- Date: 31-Oct-1998 (process 2 of 4)
-
Gravity Data
10/31/1998 /tiger/l/l378eg/grav/l-3-78-eg.160_050
/bear/programs/edit/automerge/automerge
Input was...
Converted to time format with year at start.
05/01/86 CLINT DUA0:[DATA.L378EG]L378EG.160;
DUA0:[DATA.L378EG]TEMP.EXE;
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:
- Date: 21-Jun-2012 (process 3 of 4)
-
Magnetics Data
06/21/2012 carolyn l-3-78-eg.260_050
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/l378eg/mag/l-3-78-eg.240_050
/bear/programs/edit/automerge/automerge
Converted to time format with year at start.
01/02/86 CAROLYN DRS$DATA:[L378EG.M]L378EG.240;
DRB0:[DRS.REFMT]REFORMAT.EXE;5
from Barb's gravity dump of grvm files
Converted to time format with year at start.
time, lat, long, time(sec) to nearest nav fix, data values
Person who carried out this activity:
- Date: 31-Oct-1998 (process 4 of 4)
-
Bathymetry Data
10/31/1998 /tiger/l/l378eg/bath/l-3-78-eg.336_050
/bear/programs/edit/automerge/automerge
Input was...
Converted to time format with year at start.
12/10/85 BECKIE DISK$USERDISK:[BECKIE.TEMP]L378EG.335;
DRB0:[DRS.BAT]BATRED.EXE;1
This file was hand-digetized in 2_way traveltime(secs).
No Matthews correction. Sound velocity assumed 1500m/sec.
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:
- 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:
-
Bruns, Terry R., Mann, Dennis M., and Sliter, Ray W., 1987, Multichannel
seismic-reflection profiles collected in 1978 in the eastern Gulf of Alaska:
U.S. Geological Survey Open-File Report 87-0148, 5 p. 1 sheet.
Bruns, T.R., and Carlson, P.R., 1987, Geology and petroleum potential of the
southeast Alaska continental margin, in D. Scholl, A. Grantz, and J. Vedder,
editors, Geology and resource potential of the continental margin of W. No.
America and adjacent ocean basins: Houston, TX, Circum-Pacific Council for
Energy and Mineral Resources Earth Science Series, v. 6, p. 269-282.
- How well have the observations been checked?
Identified as best available version.
- How accurate are the geographic locations?
Unspecified
- How accurate are the heights or depths?
Unspecified
- Where are the gaps in the data? What is missing?
Start and end date/times of data
Navigation Data (l-3-78-eg.051 [SINS])
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
197801010000001 197801010000201
197801020000001 197801020000118
197801030000001 197801030000199
197801040000001 197801040000208
197801050000001 197801050000178
197801060000001 197801060000215
197801070000001 197801070000144
197801080000001 197801080000137
197801090000001 197801090000132
197801100000001 197801100000157
197801110000001 197801110000161
197801120000001 197801120000047
197801130000001 197801130000058
197801140000001 197801140000117
197801150000001 197801150000088
197801160000001 197801160000026
197801170000001 197801170000107
197801180000001 197801180000122
197801190000001 197801190000079
197801200000001 197801200000087
197801210000001 197801210000115
197801220000001 197801220000212
197801230000001 197801230000088
197801240000001 197801240000091
197801250000001 197801250000059
197801260000001 197801260000303
197801270000001 197801270000188
197801280000001 197801280000450
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
Gravity Data (l-3-78-eg.160_050)
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
197806222331480 197806230000000
197806230016480 197806230101480
197806230142480 197806230931480
197806231001480 197806231345480
197806231351300 197806231629300
197806231735300 197806240258420
197806240325420 197806241654480
197806241800480 197806241900480
197806242122480 197806250812480
197806250859120 197806251358120
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
Magnetics Data (l-3-78-eg.260_050)
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
197806240707060 197806260704140
197806260912130 197806270414430
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
Bathymetry Data (l-3-78-eg.336_050)
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
197806222335000 197806230231000
197806230310000 197806230600000
197806230623000 197806241054000
197806241105000 197806241249000
197806241346000 197806241952000
197806242003000 197806242223000
197806242312000 197806252100000
197806252112000 197806252237000
197806252351000 197806260944000
197806260956000 197806270519000
197806270531000 197806270531000
197806270545000 197806270545000
197806270600000 197806270834000
197806270845000 197806271031000
197806271102000 197806280045000
197806280056000 197806280600000
197806280625000 197806281843000
197806281900000 197806281900000
197806281915000 197807010001000
197807010016000 197807010400000
197807010431000 197807030054000
197807030106000 197807030433000
197807030448000 197807031518000
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
Seismic Shots Data (l-3-78-eg.410_051)
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
197801010000001 197801010000201
197801020000001 197801020000118
197801030000001 197801030000199
197801040000001 197801040000208
197801050000001 197801050000178
197801060000001 197801060000215
197801070000001 197801070000144
197801080000001 197801080000137
197801090000001 197801090000132
197801100000001 197801100000157
197801110000001 197801110000161
197801120000001 197801120000047
197801130000001 197801130000058
197801140000001 197801140000117
197801150000001 197801150000088
197801160000001 197801160000026
197801170000001 197801170000107
197801180000001 197801180000122
197801190000001 197801190000079
197801200000001 197801200000087
197801210000001 197801210000115
197801220000001 197801220000212
197801230000001 197801230000088
197801240000001 197801240000091
197801250000001 197801250000059
197801260000001 197801260000303
197801270000001 197801270000188
197801280000001 197801280000450
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
- How consistent are the relationships among the observations, including topology?
Unspecified
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.
- Who distributes the data set? (Distributor 1 of 1)
- What's the catalog number I need to order this data set?
Downloadable Data L-3-78-EG data set <http://walrus.wr.usgs.gov/infobank/l/l378eg/html/l-3-78-eg.meta.html>
- 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.
- How can I download or order the data?
- Availability in digital form:
- Cost to order the data: None
- Dates:
- Last modified: 31-Mar-2013
- Metadata author:
-
- 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 Sun Mar 31 07:20:06 2013
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