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USGS Coastal and Marine Geology Program

Field Activity Details for field activity L981AA

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AKA: none

Other ID: L-9-81-AA

Status: Completed

Organization(s):

Funding Program(s):

Principal Investigator(s): David Scholl, Tracy Vallier

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Electro-Magnetic: Gravity, Electro-Magnetic: Magnetics, Location-Elevation: Navigation, Sampling: Geology, Seismics: Air Gun / Water Gun, Seismics: Multichannel, Seismics: Sonobuoy, Seismics: Sub Bottom Profiler, Sonar: Single Beam

Scientific Purpose/Goals:

Vehicle(s):

Start Port/Location: Dutch Harbor, AK

End Port/Location: Dutch Harbor, AK

Start Date: 1981-07-19

End Date: 1981-08-13

Equipment Used: 12khz, airgun, Burgairgun, 24channel, sonobuoy, gravity, gravitycore, chaindredge, dopplersonar, integratednavigation, RhoRho, transitsatellite, magnetics, 3.5khz, airgunmonitor

Information to be Derived:

Summary of Activity and Data Gathered: physical data holdings

Staff: George Asuncion, Jonathan Childs, Guy Cochrane, Eric Dash, Aaron Dunwald, Joe Edwards, Roy Fields, Kaye Kinoshita, Dennis Mann, Jill McCarthy, Andy Stevenson, Paul Wenberg

Affiliate Staff:
Bob Rothman - Chief Mate
Frank Johnson - Ship Captain
Margaret Keller - Geologist
Meg Kingston - Navigator
Rick Murnane - Geochemist
Rick Murnane - Geologist
Wyn Hill - Geologist
Wyn Hill - Geophysicist

Notes: Staff information imported from InfoBank
Aaron Dunwald - Chief Engineer
Andy Stevenson - Geologist
Bob Rothman - Chief Mate
Dave Scholl - Chief Scientist
Dennis Mann - Geophysicist
Eric Dash - Watchstander
Frank Johnson - Ship Captain
George Asuncion - Electronics Technician
Guy Cochrane - Navigator
Jill McCarthy - Dafe Curator
Joe Edwards - Mechanical Technician
Jon Childs - Geophysicist
Kaye Kinoshita - Navigator
Margaret Keller - Geologist
Meg Kingston - Navigator
Paul Wenberg - Mechanical Technician
Rick Murnane - Geochemist
Rick Murnane - Geologist
Roy Fields - Electronics Technician
Tracy Vallier - Chief Scientist
Wyn Hill - Geologist
Wyn Hill - Geophysicist

Location:

Alaska

Boundaries
North: 53.61480409 South: 50.11441 West: -179.7373 East: -165.99205

Platform(s):

photo of Samuel Phillips Lee
Samuel Phillips Lee

Publications

Childs, J.R., Scholl, David W., and Vallier, Tracy L., 1981, Onshore and offshore studies, Amlia Island area, Aleutian Ridge, in Albert, N.R., and Hudson, Travis, eds., The United States Geological Survey in Alaska; accomplishments during 1979: U. S. Geological Survey Circular 0823-B, pp. 134–137.

Geist, E.L., Childs, J.R., and Scholl, D.W., 1987, Evolution and petroleum geology of Amlia and Amukta intra-arc summit basins, Aleutian Ridge: Marine and Petroleum Geology, v. 4 no. 4, pp. 334–352.

Geist, E.L., Childs, J.R., and Scholl, D.W., 1985, Extensional structures on the Aleutian Ridge, Alaska: American Geophysical Union Eos, Transactions, v. 66 no. 46, pp. 1072–1072.

Geist, E.L., Childs, J.R., and Scholl, D.W., 1988, The origin of summit basins of the Aleutian Ridge; implications for block rotation of an arc massif: Tectonics, v. 7 no. 2, pp. 327–341.

Harbert, W., Scholl, D.W., Vallier, T.L., Stevenson, A.J., and Mann, D.M., 1986, Major evolutionary phases of a forearc basin of the Aleutian Terrace; relation to North Pacific tectonic events and the formation of the Aleutian subduction complex: Geology, v. 14 no. 9, pp. 757–761.

Harbert, W.P., Scholl, D.W., Mann, D., Vallier, T.L., and Stevenson, A.J., 1982, Geologic and tectonic history of Atka Basin, Aleutian Ridge, in American Geophysical Union 1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63 no. 45, pp. 1115–1115.

McCarthy, J., Scholl, D.W., Mann, D., Vallier, T.L., and Stevenson, A.J., 1982, Mechanisms of accretion along the Aleutian Trench, in American Geophysical Union 1982 fall meeting: American Geophysical Union Eos, Transactions, v. 63 no. 45, pp. 1115–1115.

McCarthy, J., 1987, Seismic reflection imaging of plate boundaries; examples from the central Aleutians, the North Atlantic, and the Basin and Range Province of the Western U.S: Stanford, CA, Stanford University Ph. D. Dissertation.

McCarthy, J., and Scholl, David W., 1985, Mechanisms of subduction accretion along the central Aleutian Trench: Geological Society of America Bulletin, v. 96 no. 6, pp. 691–701.

McCarthy, J., Scholl, David W., and Sleep, Norman H.,, 1983, Accretionary structures along the central Aleutian Trench: American Geophysical Union Eos, Transactions, v. 64 no. 45, pp. 870–870.

McCarthy, J., Stevenson, Andrew J., Scholl, David W., and Vallier, Tracy L., 1984, Speculations on the petroleum geology of the accretionary body; an example from the central Aleutians: Marine and Petroleum Geology, v. 1 no. 2, pp. 151–167.

Scholl, D.W., Mann, D.M., Vallier, T.L., and Sliter, R.W., 1988, Multichannel seismic-reflection data collected in 1981 across the Aleutian Arc and Trench, Alaska: U.S. Geological Survey Open-File Report 88-592, http://pubs.usgs.gov/of/1988/0592/.

Steele, W.C., Degnan, C.H., Deeter, G.B., and Riordan, J.A., 1989, Description of marine geophysical data collected by the U.S. Geological Survey and how to obtain it: U.S. Geological Survey Open-File Report 89-167, 26 p., https://pubs.er.usgs.gov/publication/ofr89167.

Portals/Viewers

FAN L981AA has data viewable in the GeoMappApp/Virtual Ocean applications. To view this data in these applications go to http://www.geomapapp.org/ and http://www.virtualocean.org/. See the instructions for locating USGS data in these applications. You can also view the imagery created from the SEGY data at https://cmgds.marine.usgs.gov/images.php?cruise=L981AA.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
12khz --- Single Beam
Raw depth (bathymetry) data l-9-81-aa.301
Edited bathymetry data l-9-81-aa.335
Edited bathymetry data l-9-81-aa.335_070 (Provisional best file)
Undefined l-9-81-aa.390
Survey information
Tape list
Tape list 2
Processing Info
NGDC MGD77 data - bathy
airgun --- Air Gun / Water Gun
Survey information
Burgairgun --- Air Gun / Water Gun
Survey information
24channel --- Multichannel
Edited seismic shot point data l-9-81-aa.421_070 (Provisional best file)
Scan l-9-81-aa.small.1.tif
Image l-9-81-aa.thumb.1.jpg
Survey information
Edited seismic shot point data l-9-81-aa.421
Scan l-9-81-aa.full.2.tif
seismic (data on FAD)
Edited seismic shot point data l-9-81-aa.420
Scan l-9-81-aa.full.1.tif
Scan l-9-81-aa.small.2.tif
Image l-9-81-aa.thumb.2.jpg
Multichannel data (stack data)
sonobuoy --- Sonobuoy
sonobuoy (data on FAD)
gravity --- Gravity
Free Air Anomaly data l-9-81-aa.165_070 (Provisional best file)
Free Air Anomaly data l-9-81-aa.161
Free Air Anomaly data l-9-81-aa.165
Raw gravity data from analog meter l-9-81-aa.111
Gravity land tie data l-9-81-aa.140
Survey information
NGDC MGD77 data - gravity
gravitycore --- Geology
Station Information
chaindredge --- Geology
d-03
d-04
d-05
d-07
d-10
d-08
d-09
d-06
Station Information
d-01
dopplersonar --- Navigation
Survey information
integratednavigation --- Navigation
Best file with nav in ArcInfo E00 format
Position update data l-9-81-aa.020
Integrated navigation (SINS) data l-9-81-aa.050
Integrated navigation (SINS) data l-9-81-aa.051
Integrated navigation (SINS) data l-9-81-aa.053
Eotvos/course/speed/distance data l-9-81-aa.070 (Provisional best file)
Eotvos/course/speed/distance data l-9-81-aa.070_degree
Lines
Survey information
field logs (data on FAD)
RhoRho --- Navigation
Survey information
transitsatellite --- Navigation
Satellite data l-9-81-aa.000
Survey information
magnetics --- Magnetics
Raw magnetics data l-9-81-aa.200_070
Edited magnetics data l-9-81-aa.220_070 (Provisional best file)
Raw magnetics data l-9-81-aa.200
NGDC MGD77 data - Magnetics
3.5khz --- Sub Bottom Profiler
Sediment thickness data l-9-81-aa.340
Sediment thickness data l-9-81-aa.345
Survey information
airgunmonitor --- Air Gun / Water Gun

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