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Metadata
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ID
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L-9-81-AA
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Abstract
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Chief Scientists: Dave Scholl, Tracy Vallier. Geophysical
and geological data (3dot5khz, 12khz, airgun, airgunmonitor,
Burgairgun, 24channel, sonobuoy, gravity, gravitycore,
chaindredge, dopplersonar, integratednavigation, RhoRho,
transitsatellite) of field activity L-9-81-AA in Aleutian
Arc, Alaska from 07/19/1981 to 08/13/1981
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Chief Scientist
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Dave Scholl
Tracy Vallier
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Activity Type
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Geophysical and geological
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Platform
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Samuel Phillips Lee
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Area of Operation
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Aleutian Arc, Alaska
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Location map
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Bounding Coordinates
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54.08144
173.58301 -165.99205
50.11441
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Ports
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leave Dutch Harbor, AK
arrive Dutch Harbor, AK
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Dates
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07/19/1981 (JD 200) to 08/13/1981 (JD 225)
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Analog Materials
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list
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Index map
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Crew
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Aaron Dunwald
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Chief Engineer
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Andy Stevenson
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Geologist
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Bob Rothman
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Chief Mate
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Dave Scholl
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Chief Scientist
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Dennis Mann
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Geophysicist
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Eric Dash
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Watchstander
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Frank Johnson
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Ship Captain
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George Asuncion
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Electronics Technician
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Guy Cochrane
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Navigator
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Jill McCarthy
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Dafe Curator
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Joe Edwards
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Mechanical Technician
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Jon Childs
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Geophysicist
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Kaye Kinoshita
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Navigator
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Margaret Keller
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Geologist
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Meg Kingston
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Navigator
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Paul Wenberg
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Mechanical Technician
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Rick Murnane
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Geochemist
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Rick Murnane
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Geologist
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Roy Fields
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Electronics Technician
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Tracy Vallier
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Chief Scientist
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Wyn Hill
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Geologist
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Wyn Hill
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Geophysicist
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Equipment Used
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3dot5khz
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12khz
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airgun
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airgunmonitor
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Burgairgun
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24channel
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sonobuoy
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gravity
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gravitycore
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chaindredge
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dopplersonar
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integratednavigation
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RhoRho
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transitsatellite
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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 --- L981AA
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Institution Data Collection ID --- L981AA
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NGDC ID --- 06050096
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Funding --- (unspecified)
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Project, Cruise & Leg --- Tracy Vallier
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Study region --- +55.00000,+50.00000,+173.00000,-165.00000
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Chief Scientist(s) --- Dave Scholl
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Name of vessel --- Lee (surface ship)
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Date field data collection started --- 07/19/81 LV DUTCH HARBOR, AK
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Date field data collection ended --- 08/13/81 ARRIVE DUTCH HARBOR, AK
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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: (unspecified)
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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 --- 06/17/87
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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 --- (unspecified)
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Position determination method --- (unspecified)
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Bathymetry instrumentation --- (unspecified)
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Additional forms of bathymetric data --- (unspecified)
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General rate of bathymetry in file --- 1.2 minutes
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General collection rate of bathymetry --- (unspecified)
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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 --- (unspecified)
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Magnetics instrumentation --- (unspecified)
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Additional forms of magnetics data --- (unspecified)
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General rate of magnetics in file --- 1.1 minutes
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General collection rate of magnetics --- (unspecified)
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Magnetic sensor tow distance --- (unspecified)
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Magnetic sensor depth --- (unspecified)
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Two sensor horizontal separation --- (unspecified)
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Residual magnetics reference field --- (unspecified)
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Method of applying residual field --- (unspecified)
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Gravity instrumentation --- (unspecified)
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Additional forms of gravity data --- (unspecified)
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General rate of gravity in file --- 1.0 minutes
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General collection rate of gravity --- (unspecified)
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Theoretical gravity formula --- (unspecified)
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Reference system --- (unspecified)
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Corrections applied --- (unspecified)
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Starting land tie --- (unspecified)
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Ending land tie --- (unspecified)
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Seismic instrumentation --- (unspecified)
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Formats of seismic data --- (unspecified)
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Publications
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Childs, Jonathan R., Scholl, David W., and Vallier, Tracy L., 1981, Onshore and offshore studies,
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Amlia Island area, Aleutian Ridge, in Albert, N.R., and Hudson, Travis, eds., The United States
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Geological Survey in Alaska; accomplishments during 1979: U.S. Geological Survey Circular 0823-B,
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p. 134-137.
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McCarthy, Jill, Stevenson, Andrew J., Scholl, David W., and Vallier, Tracy L., 1984, Speculations on
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the petroleum geology of the accretionary body; an example from the central Aleutians: Marine and
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Petroleum Geology, v. 1, no. 2, p. 151-167.
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McCarthy, Jill, and Scholl, David W., 1985, Mechanisms of subduction accretion along the
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central Aleutian Trench: Geological Society of America Bulletin, v. 96, no. 6, p. 691-701.
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Harbert, W.P., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982,
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Geologic and tectonic history of Atka Basin, Aleutian Ridge, in American Geophysical Union
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1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 1115.
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McCarthy, J., Scholl, David W., Mann, D., Vallier, Tracy L., and Stevenson, Andrew J., 1982,
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Mechanisms of accretion along the Aleutian Trench, in American Geophysical Union 1982 fall
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meeting: American Geophysical Union Eos, Transactions, v. 63, no. 45, p. 1115.
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Harbert, William, Scholl, David W., Vallier, Tracy L., Stevenson, Andrew J., and Mann, D.M., 1986,
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Major evolutionary phases of a forearc basin of the Aleutian Terrace; relation to North Pacific
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tectonic events and the formation of the Aleutian subduction complex: Boulder, CO, Geology,
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v. 14, no. 9, p. 757-761.
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McCarthy, Jill, Scholl, David W., and Sleep, Norman H., 1983, Accretionary structures along
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the central Aleutian Trench: American Geophysical Union Eos, Transactions, v. 64, no. 45, p. 870.
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McCarthy, Jill, 1987, Seismic reflection imaging of plate boundaries; examples from the
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central Aleutians, the North Atlantic, and the Basin and Range Province of the Western U.S.:
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Stanford, CA, Stanford University Ph. D. Dissertation.
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Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1987, Evolution and petroleum
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geology of Amlia and Amukta intra-arc summit basins, Aleutian Ridge: Marine and Petroleum
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Geology, v. 4, no. 4, p. 334-352.
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Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1985, Extensional structures
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on the Aleutian Ridge, Alaska: American Geophysical Union Eos, Transactions, v. 66, no. 46,
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p. 1072.
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Geist, Eric L., Childs, Jonathan R., and Scholl, David W., 1988, The origin of summit
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basins of the Aleutian Ridge; implications for block rotation of an arc massif: Tectonics,
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v. 7, no. 2, p. 327-341.
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Scholl, David W., Mann, Dennis M., Vallier, Tracy L., and Sliter, Ray W., 1988, Multichannel
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seismic-reflection data collected in 1981 across the Aleutian Arc and Trench, Alaska:
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U.S. Geological Survey Open-File Report 88-0592, 4 p. 2 sheets.
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Got Help?
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For L-9-81-AA, we would appreciate any information on -- information to be derived, equipment used, information specialist, organization, project, publications, purpose, summary.
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