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Metadata
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ID
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L-1-84-AN
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Abstract
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United States Geological Survey, Menlo Park, California.
Chief Scientists: Monty Hampton, Steve Eittreim. Geological
and Geophysical data (12khz, 3dot5khz, gravity,
sidescansonar, uniboom, airgun, sonobuoy, tempsalinometer,
24channel, gravitycore, chaindredge, gradiometer,
expendablebatthermograph, airgunmonitor) of field activity
L-1-84-AN in Antarctica from 01/04/1984 to 02/01/1984
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Organization |
United States Geological Survey, Menlo Park, California
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Chief Scientist
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Monty Hampton
Steve Eittreim
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Activity Type
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Geological and Geophysical
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Platform
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Samuel Phillips Lee
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Area of Operation
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Antarctica, Southern Ocean
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Location map
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Bounding Coordinates
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-43.58359
129.74580 173.18375
-77.10433
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Ports
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leave Lyttleton, NZ
arrive McMurdo Station, Ant
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Dates
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01/04/1984 (JD 004) to 02/01/1984 (JD 032)
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Analog Materials
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list
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Index maps
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Crew
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Equipment Used
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12khz
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3dot5khz
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gravity
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sidescansonar
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uniboom
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airgun
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sonobuoy
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tempsalinometer
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24channel
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gravitycore
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chaindredge
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gradiometer
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expendablebatthermograph
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airgunmonitor
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Information to be Derived
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Seismic reflection profiles, bathymetry, gravity, magnetics,
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side scan, lithology
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Summary
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Approximately 900 km of 24-fold Common Depth Point (CDP)
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seismic-reflection, gravity, magnetic gradiometer, and 3.5 and
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12.5 kHz echo-sounding data were collected for the continental
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margin of Wilkes Land, Antarctica. Gravity and bathymetric data
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were also collected for the transit line between Wilkes Land and
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New Zealand. The data were collected in 1984 by the U.S.
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Geological Survey R/V S.P. LEE. The seismic data source was a 5-
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airgun array totaling 1,311 cu. in., pressurized to 2,000 psi,
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towed at a depth of 10.5 m. The receiver consisted of a 24-
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channel hydrophone streamer, with 100-m group lengths containing
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60 hydrophones i each group. The near channel offset from the
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airguns was 297 m. The data were recorded with a GUS Model HDRR-
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4200 recording system.
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The magnetic gradiometer data were recorded continuously
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with a Geometrics proton-precession marine gradiometer. Two
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proton-precession magnetometers, separated horizontally by 150 m,
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were towed aft of the ship. The near sensor was towed 300 m aft,
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and both sensors were towed at a depth of approximately 50 m.
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Data were measured at 4-sec intervals. The gravity data were
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recorded continuously with a LaCoste and Romberg sea gravimeter
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on a 2-axis stabilized platform. Data were collected at 20-sec
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intervals and later desampled to 2 min or greater for plotting
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and modeling.
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NGDC Overview
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! Converted to time format with year at start.
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!
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DATA COLLECTION OVERVIEW (use NGDC GEODAS CD to retrieve data)
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MCG Data Collection ID --- L184AN
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Institution Data Collection ID --- L184AN
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NGDC ID --- 06050068
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Funding --- (unspecified)
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Project, Cruise & Leg --- ANTARCTIC / WILKES LAND MARGIN
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Study region --- -43.00000,-78.00000,+129.00000,+174.00000
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Chief Scientist(s) --- STEVE EITTREIM,M.HAMPTON
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Date field data collection started --- 01/04/84 LV LYTTLETON,NZ
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Date field data collection ended --- 02/01/84 AR MCMURDO STATION,ANT
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Parameters surveyed ---
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Bathymetry: surveyed, contained in data file
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Magnetics: surveyed, contained in data file
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Gravity: surveyed, contained in data file
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High-resolution seismics: (unspecified)
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Deep penetration seismics: surveyed, contained in data file
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Format --- (I1,A8,F5.2,4I2,F5.3,F8.5,F9.5,I1,F6.4,F6.1,I2,i1,3F6.1,I1,F5.1,F6.0,F7.1,F6.1,F5.1,A8,4I1)
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Date of data input to NGDC --- 08/05/87
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Contributing institution --- USGS Branch of Pacific Marine Geology
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Country --- United States
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Navigation instrumentation --- INTEGRATED NAV/LORAN-C/DOPPLER SONAR
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Position determination method --- SAT
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Bathymetry instrumentation --- 3.5/12KHZ,1-4 SEC SWEEP,25/50 MS CESP
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Additional forms of bathymetric data --- ANALOG RECORDS, MICROFILM
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General rate of bathymetry in file --- 0.8 minutes
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General collection rate of bathymetry --- 1-4 SECOND
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Assumed sound velocity --- (unspecified)
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Bathymetric datum code --- No correction applied (sea level)
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Bathmetry interpolation scheme --- NO INTERPOLATION,DATA INTERVAL 1-5 MIN. W/INFLECTIONS
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Magnetics instrumentation --- GEOMETRICS PROTON-PRECESSION GRADIOMETER
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Additional forms of magnetics data --- ANALOG RECORDS
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General rate of magnetics in file --- 0.9 minutes
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General collection rate of magnetics --- 3 seconds
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Magnetic sensor tow distance --- 300 meters
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Magnetic sensor depth --- 50.0 meters
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Two sensor horizontal separation --- 150 meters
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Residual magnetics reference field --- IGRF-75
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Method of applying residual field --- LINEAR INTERP. BETWEEN NAV. PTS.
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Gravity instrumentation --- LACOSTE-ROMBERG S-53 SEA-GRAVIMETER
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Additional forms of gravity data --- ANALOG RECORDS
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General rate of gravity in file --- 0.9 minutes
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General collection rate of gravity --- 20 seconds
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Theoretical gravity formula --- IAG System 1967
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Reference system --- System IGSN 71
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Corrections applied --- DRIFT,EOTVOS CORRECTIONS
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Starting land tie --- 980526.5 LYTTLETON, NEW ZEALAND
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Ending land tie --- 980526.5 LYTTLETON, NEW ZEALAND
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Seismic instrumentation --- 1313 CU.IN AIRGUN-24CHAN/UNIBOOM/3.5KHZ
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Formats of seismic data --- ANALOG PAPER ROLL
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Notes ---
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BATHYMETRY DATA DIGITIZED MANUALLY BY U.S.G.S. FROM ANALOG RECORDS.
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MAGNETIC FIELD, NOT FROM SINGL SENSOR. RECONSTRUCTION METHOD
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DEVELOPED BY GEOMETRICS, INC.
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SIDESCAN SONAR, SONOBOUY
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Publications
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Eittreim, Stephen L., and Hampton, M.A., 1985, Marine geological and geophysical
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investigations of the Wilkes Land continental margin, 1984: Antarctic Journal of the
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United States, v. 19, no. 5, p. 82-84.
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Eittreim, Stephen L., Hampton, Monty A., and Childs, Jonathan R., 1985, Seismic-reflection
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signature of Cretaceous continental breakup on the Wilkes Land margin, Antarctica:
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Science, v. 229, no. 4718, p. 1082-1084.
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Eittreim, S.L., Hampton, Monty A., Childs, J.R., and Moore, G.W., 1984, The East Antarctic
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passive margin; structure and seismic stratigraphy across its continent-ocean boundary, in
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AGU 1984 fall meeting: American Geophysical Union Eos, Transactions, v. 65, no. 45, p. 1105.
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Eittreim, S.L., Hampton, M.A., Smith, G.L., and Childs, J.R., 1986, Marine geophysical data
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from the Wilkes Land continental margin, Antarctica: U.S. Geological Survey Open-File
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Report 86-0339, 9 p.
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Eittreim, Stephen L., and Hampton, Monty A., 1986, Prebreakup sedimentary and volcanic
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sequences on rifted continental margin of Wilkes Land, Antarctica: American Association of
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Petroleum Geologists Bulletin, v. 70, no. 7, p. 921.
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Eittreim, S.L., Smith, G.L., Childs, Jonathan R., and Stagg, H.M.J., 1985, Moho topography
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and deep structure across the continent-ocean transition, Wilkes Land, Antarctica: American
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Geophysical Union Eos, Transactions, v. 66, no. 46, p. 1072.
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Eittreim, Stephen L., and Hampton, Monty A., eds., 1987, The Antarctic continental margin;
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geology and geophysics of offshore Wilkes Land: Circum-Pacific Council for Energy and Mineral
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Resources, Earth Science Series, v. 5A, 221 p.
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Moore, G.W., and Eittreim, Stephen L., 1987, Mechanism of extension and rifting at the
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Antarctica continental margin, in Eittreim, Stephen L., and Hampton, Monty A., eds., The
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Antarctic continental margin; geology and geophysics of offshore Wilkes Land: Circum-Pacific
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Council for Energy and Mineral Resources, Earth Science Series, v. 5A, p. 89-97.
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Childs, J.R., and Stagg, H.M.J., 1987, The deep crustal structure of the Wilkes Land
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continental margin, in Eittreim, Stephen L., and Hampton, Monty A., eds., The
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Antarctic continental margin; geology and geophysics of offshore Wilkes Land: Circum-Pacific
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Council for Energy and Mineral Resources, Earth Science Series, v. 5A, p. 99-116.
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Koenig, M., 1987, Geophysical data from the continental margin off Wilkes Land, Antarctica;
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implications for breakup and dispersal of Australia-Antarctica, in Eittreim, Stephen L., and
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Hampton, Monty A., eds., The Antarctic continental margin; geology and geophysics of offshore
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Wilkes Land: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series,
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v. 5A, p. 117-145.
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Chase, T.E., Seekins, B.A., Young, J.D., and Eittreim, Stephen L., 1987, Marine topography of
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offshore Antarctica, in Eittreim, Stephen L., and Hampton, Monty A., eds., The
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Antarctic continental margin; geology and geophysics of offshore Wilkes Land: Circum-Pacific
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Council for Energy and Mineral Resources, Earth Science Series, v. 5A, p. 147-149.
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Hampton, Monty A., Kravitz, J.H., and Luepke, Gretchen, 1987, Geology of sediment cores
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from the George V continental margin, Antarctica, in Eittreim, Stephen L., and Hampton,
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Monty A., eds., The Antarctic continental margin; geology and geophysics of offshore Wilkes
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Land: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 5A,
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p. 151-174.
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Barnes, P.W., 1987, Morphologic studies of the Wilkes Land continental shelf, Antarctica;
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glacial and iceberg effects, in Eittreim, Stephen L., and Hampton, Monty A., eds., The
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Antarctic continental margin; geology and geophysics of offshore Wilkes Land: Circum-Pacific
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Council for Energy and Mineral Resources, Earth Science Series, v. 5A, p. 175-194.
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Domack, E.W., 1987, Preliminary stratigraphy for a portion of the Wilkes Land continental
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shelf, Antarctica; evidence from till provenance, in Eittreim, Stephen L., and Hampton, Monty
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A., eds., The Antarctic continental margin; geology and geophysics of offshore Wilkes Land:
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Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 5A,
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p. 195-203.
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Kvenvolden, K.A., Golan-Bac, Margaret, and Rapp, J.B., 1987, Hydrocarbon geochemistry of
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sediments offshore from Antarctica; Wilkes Land continental margin, in Eittreim, Stephen L.,
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and Hampton, Monty A., eds., The Antarctic continental margin; geology and geophysics of
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offshore Wilkes Land: Circum-Pacific Council for Energy and Mineral Resources, Earth Science
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Series, v. 5A, p. 205-213.
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Truswell, E.M., 1987, The palynology of core samples from the S.P. Lee Wilkes Land cruise,
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in Eittreim, Stephen L., and Hampton, Monty A., eds., The Antarctic continental margin; geology
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and geophysics of offshore Wilkes Land: Circum-Pacific Council for Energy and Mineral Resources,
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Earth Science Series, v. 5A, p. 215-218.
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Moore, G.W., 1987, Provenance of glacial stones dredged off Wilkes Land, Antarctica, in Eittreim,
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Stephen L., and Hampton, Monty A., eds., The Antarctic continental margin; geology and geophysics
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of offshore Wilkes Land: Circum-Pacific Council for Energy and Mineral Resources, Earth Science
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Series, v. 5A, p. 219-221.
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Barnes, Peter W., Edwards, Brian D., and Karl, Herman A., 1990, Morphologic, stratigraphic, and
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sedimentologic studies of surficial sediments off Wilkes Land and in the western Ross Sea, in
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Cooper, Alan K., and Webb, Peter N., eds., International workshop on Antarctic offshore acoustic
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stratigraphy (Antostrat); overview and extended abstracts: U.S. Geological Survey Open-File Report
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90-0309, p. 42-43.
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Childs, Jonathan R., and Cochrane, Guy R., 1990, Sonobuoy seismic data over the Ross Sea and Wilkes
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Land continental margins, in Cooper, Alan K., and Webb, Peter N., eds., International workshop on
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Antarctic offshore acoustic stratigraphy (Antostrat); overview and extended abstracts: U.S.
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Geological Survey Open-File Report 90-0309, p. 97-101.
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http://www.ngdc.noaa.gov/mgg/fliers/86-MGG-27
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Got Help?
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For L-1-84-AN, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, kms of navigation, national plan, notes, owner, project, project number, purpose, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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