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USGS Coastal and Marine Geology Program

Field Activity Details for field activity L284AN

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AKA: none

Other ID: L-2-84-AN

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): Alan Cooper

Affiliate Investigator(s): Fred Davey

Information Specialist(s):

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

Scientific Purpose/Goals:

Vehicle(s):

Start Port/Location:

End Port/Location:

Start Date: 1984-02-03

End Date: 1984-03-03

Equipment Used: 3.5khz, 12khz, uniboom, airgunmonitor, airgun, sonobuoy, gravitycore, chaindredge, dartcore, Digitrack, heatflow, integratednavigation, transitsatellite, 24channel, gradiometer, gravity

Information to be Derived: Seismic reflection profiles, gravity, magnetics, lithology, and bathymetry.

Summary of Activity and Data Gathered: physical data holdings Approximately 2,350-line km of multichannel seismic-reflection data, as well as 4,500 km of other geophysical profile data including gravity, magnetic gradiometer, and echo-sounding profiles for the western Ross Sea, Antarctica were collected. The seismic source consisted of a tuned five-airgun array totaling 1,311 cu.in. pressurized to 1,900 psi, towed at a depth of 10.5 m. The receiver consisted of a 24-channel hydrophone streamer, with 100-m group lengths containing 60 hydrophones in each group. The streamer was towed at a depth of 12.5 m. The data were recorded with a GUS Model HDDR-4200 recording system. All lines were recorded to 12 sec, with exception of Line 407 (15 sec) and Line 419 (8 sec). Magnetic data were recorded continuously with a Geometrics proton-procession gradiometer to remove the large temporal magnetic variations commonly recorded at polar latitudes. The gradiometer system consisted of two proton-precession magnetometers separated horizontally by 500 ft (152 m) with the forward sensor lying 225 m aft of the ship. Both sensors were towed at a depth of approximately 20-40m. Data were sampled at 4-sec intervals. Gravity data were recorded continuously with a LaCoste and Romberg sea gravimeter (S53) on a two-axis stabilized platform. The data were collected at 20-sec intervals and subsequently desampled to 2 min or greater for plotting and modeling.

Staff: Donna Blackman, Aaron Dunwald, Brian Edwards, Joe Edwards, Roy Fields, Herman Karl, Kaye Kinoshita, Dennis Mann, Al McClenaghan, Kevin O'Toole, John Rapp, Erk Reimnitz, Holly Ryan, Andy Stevenson, Jim Vaughan

Affiliate Staff:
Dave Howell - Geologist
Pat Moore - Chief Mate
Skip Pelletier - Watchstander

Notes: Based on data in best navigation file, l-2-84-an.070, cumulative trackline distance to the nearest tens of kilometers is 8120 kilometers.

Staff information imported from InfoBank
Aaron Dunwald - Chief Engineer
Al McClenaghan - Ship Captain
Alan Cooper - Chief Scientist
Andy Stevenson - Geologist
Brian Edwards - Geologist
Dave Howell - Geologist
Dennis Mann - Chief Watchstander
Donna Blackman - Watchstander
Erk Reimnitz - Geologist
Fred Davey - Chief Scientist
Herman Karl - Geologist
Holly Ryan - Watchstander
Jim Vaughan - Chief Engineer
Joe Edwards - Mechanical Technician
John Behrendt - Geophysicist
John Rapp - Geochemist
Kaye Kinoshita - Navigator
Kevin O'Toole - Mechanical Technician
Pat Moore - Chief Mate
Roy Fields - Electronics Technician
Shawn Dadisman - Dafe Curator
Skip Pelletier - Watchstander

Location:

Antarctica

Boundaries
North: -43.59192 South: -76.78982761 West: 163.002 East: 177.1366725

Platform(s):

photo of Samuel Phillips Lee
Samuel Phillips Lee

Publications

Barron, J.A., and Burckle, L.H., 1987, Diatoms from the 1984 USGS Antarctic cruise in the Ross Sea, in Cooper, Alan K., and Davey, Frederick J., eds., The Antarctic continental margin; geology and geophysics of the western Ross Sea: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 58, pp. 225–230.

Bartek, L.R., and Anderson, John B., 1990, Neogene stratigraphy of the Ross Sea continental shelf; revelations from Leg 2 of the 1990 Ross Sea expedition of the R/V Polar Duke, in Cooper, Alan K., and Webb, Peter N., eds., International workshop on Antarctic offshore acoustic stratigraphy (Antostrat); overview and extended abstracts: U.S. Geological Survey Open-File Report 90-0309, pp. 53–62.

Behrendt, J.C., Cooper, Alan K., and Yuan, A., 1987, Interpretation of marine magnetic gradiometer and multichannel seismic-reflection observations over the western Ross Sea shelf, Antarctica, in Cooper, Alan K., and Davey, Frederick J., eds. The Antarctic continental margin; geology and geophysics of the western Ross Sea: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series 58, pp. 155–177.

Chase, T.E., Seekins, B.A., Vath, S.C., Vanney, J.R., Johnson, G.L., and Wannesson, J., 2002, Dibble Glacier and environs (lat 61 degrees 30' -67 degrees S, long 130 degrees - 140 degrees E): U.S. Geological Survey Open-File Report 2002-419A, http://pubs.er.usgs.gov/publication/ofr02419A.

Chase, T.E., Seekins, B.A., Vath, S.C., Vanney, J.R., Johnson, G.L., Wannesson, J., Anderson, J.B., and Domack, E.W., 2002, Buffon Canyon and environs (lat 64 degrees - 68 degrees 30'S, long 140 degrees - 150 degrees E): U.S. Geological Survey Open-File Report 2002-419B, http://pubs.er.usgs.gov/publication/ofr02419B.

Chase, T.E., Seekins, B.A., Vath, S.C., Young, J.D., Dadisman, S.V., Vanney, J.R., Johnson, G.L., and Anderson, J.B., 2002, Possession Islands to Scott Seamounts and environs (lat 68 degrees 30' - 72 degrees 30'S, long 170 degrees - 180 degrees E): U.S. Geological Survey Open-File Report 2002-419G, http://pubs.er.usgs.gov/publication/ofr02419G.

Chase, T.E., Seekins, B.A., Vath, S.C., Young, J.D., Dadisman, S.V., Vanney, J.R., Johnson, G.L., Anderson, J.B., and Brake, C.F., 2002, Oates Canyon/Bank and environs (lat 68 degrees 30' - 72 degrees 30'S, long 160 degrees - 170 degrees E): U.S. Geological Survey Open-File Report 2002-419F, http://pubs.er.usgs.gov/publication/ofr02419F.

Chase, T.E., Seekins, B.A., Vath, S.C., Young, J.D., Vanney, J.R., Johnson, G.L., and Dadisman, S.V., 2002, Balleny Islands and environs (lat 64 degrees - 68 degrees 30'S, long 160 degrees - 170 degrees E): U.S. Geological Survey Open-File Report 2002-419D, http://pubs.er.usgs.gov/publication/ofr02419D.

Chase, T.E., Seekins, B.A., Vath, S.C., Young, J.D., Vanney, J.R., Johnson, G.L., and Dadisman, S.V., 2002, Hillary Canyon, Iselin Bank, and northern environs (lat 68 degrees 30' - 72 degrees 30'S, long 180 degrees - 170 degrees W): U.S. Geological Survey Open-File Report 2002-419H, http://pubs.er.usgs.gov/publication/ofr02419H.

Chase, T.E., Seekins, B.A., Vath, S.C., Young, J.D., Vanney, J.R., Johnson, G.L., and Wannesson, J., 2002, Mawson Peninsula and environs (lat 64 degrees - 68 degrees 30'S, long 150 degrees - 160 degrees E): U.S. Geological Survey Open-File Report 2002-419C, http://pubs.er.usgs.gov/publication/ofr02419C.

Chase, T.E., Seekins, B.A., Young, J.D., Dadisman, S.V., Vanney, J.R., and Johnson, G.L., 2002, Iselin Bank and southwest environs (lat 72 degrees 30' - 75 degrees 30'S, long 180 degrees - 170 degrees W): U.S. Geological Survey Open-File Report 2002-419K, http://pubs.er.usgs.gov/publication/ofr02419K.

Chase, T.E., Seekins, B.A., Young, J.D., Dadisman, S.V., Vanney, J.R., Johnson, G.L., Anderson, J.B., and Myers, N., 2002, Joides Basin and environs (lat 72 degrees 30' - 75 degrees 30'S, long 170 degrees E - 180 degrees ): U.S. Geological Survey Open-File Report 2002-419J, http://pubs.er.usgs.gov/publication/ofr02419J.

Chase, T.E., Seekins, B.A., Young, J.D., Dadisman, S.V., Vanney, J.R., Johnson, G.L., Anderson, J.B., and Myers, N., 2002, Ross Bank and environs (lat 75 degrees 30' - 78 degrees 30'S, long 170 degrees E - 180 degrees): U.S. Geological Survey Open-File Report, http://pubs.er.usgs.gov/publication/ofr02419M.

Chase, T.E., Seekins, B.A., Young, J.D., Dadisman, S.V., Vanney, J.R., Johnson, G.L., Anderson, J.B., and Myers, N., 2002, Ross Island and environs (lat 75 degrees 30' - 78 degrees 30'S, long 160 degrees - 170 degrees E): U.S. Geological Survey Open-File Report 2002-419L, http://pubs.er.usgs.gov/publication/ofr02419L.

Childs, J.R., and Cochrane, Guy R., 1990, Sonobuoy seismic data over the Ross Sea and Wilkes Land continental margins, in Cooper, Alan K., and Webb, Peter N., eds., International workshop on Antarctic offshore acoustic stratigraphy (Antostrat); overview and extended abstracts: U.S. Geological Survey Open-File Report 90-0309, pp. 97–101.

Cochrane, G.R., Cooper, Alan K., Childs, Jonathan R., and Hart, Patrick E., 1992, USGS seismic refraction surveys in the Ross Sea, 1984-1990: U.S. Geological Survey Open-File Report 92-0556, 17 p.

Cooper, A.K., and Davey, F.J., 1985, Marine geological and geophysical investigations in the Ross Sea, Antarctica: Antarctic Journal of the United States, v. 19 no. 5, pp. 80–82.

Cooper, A.K., Mann, D.M., Childs, J.R., and Davey, F.J., 1986, Marine geophysical data from the western Ross Sea, Antarctica: U.S. Geological Survey Open-File Report 86-0634, 14 p., http://pubs.usgs.gov/of/1986/0634/report.pdf.

Cooper, A.K., and Davey, F.J., 1985, Episodic rifting of Phanerozoic rocks in the Victoria Land Basin, western Ross Sea, Antarctica: Science, v. 229 no. 4718, pp. 1085–1087.

Cooper, A.K., 1984, Geophysical and geologic studies of Ross Sea continental margin, Antarctica, in 1984 American Association of Petroleum Geologists annual convention with divisions, Society For Sedimentary Geology/EMD/DPA: American Association of Petroleum Geologists Bulletin, v. 68 no. 4, pp. 465–465.

Dadisman, S.V., Ryan, H.F., and Mann, D.M., 1987, Recording and processing procedures for multi-channel seismic-reflection data collected in the Western Ross Sea, Antarctica; Earth Science Series, vol. 5B: In: Cooper, A.K., Davey, F.J. (Eds.). The Antarctic continental margin geology and geophysics of the Western Ross Sea, Circum-Pacific Council for Energy and Mineral Resources, Houston, TX, pp. 17–26.

Davey, F.J., and Cooper, A.K., 1984, U.S.G.S. geoscience survey; Ross Sea, Antarctica: New Zealand Antarctic Record, v. 5 no. 3, pp. 41–43.

Hansen, R.O., and Childs, J.R., 1987, The Antarctic continental margin magnetic gradiometer data; suppression of time variations, in Cooper, Alan K., and Davey, Frederick J., eds., The Antarctic continental margin; geology and geophysics of the western Ross Sea: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 58, pp. 139–153.

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.

Wold, R.J., and Cooper, Alan K., 1989, Marine magnetic gradiometer; a tool for the seismic interpreter: Geophysics: The Leading Edge of Exploration, v. 8 no. 8, pp. 22–27.

Wong, F.L., Barrett, P.J., Gamble, J., and Howell, D.G., 1987, Petrography of rock samples dredged from Iselin Bank, Ross Sea, Antarctica, in Cooper, Alan K., and Davey, Frederick J., eds., The Antarctic continental margin; geology and geophysics of the western Ross Sea: Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series, v. 58, pp. 231–253.

Portals/Viewers

FAN L284AN 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=L284AN.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
3.5khz --- Sub Bottom Profiler
Survey information
12khz --- Single Beam
Raw depth (bathymetry) data l-2-84-an.301
Edited bathymetry data l-2-84-an.330
Edited bathymetry data l-2-84-an.331_075
NGDC MGD77 data - bathy
Edited bathymetry data l-2-84-an.331
Edited bathymetry data l-2-84-an.331_070 (Provisional best file)
Survey information
uniboom --- Boomer
Survey information
airgunmonitor --- Air Gun / Water Gun
Survey information
airgun --- Air Gun / Water Gun
Survey information
sonobuoy --- Sonobuoy
Survey information
gravitycore --- Geology
Station Information
analog holdings (physical sample storage location)
chaindredge --- Geology
l-2-84-an.dredge.pdf
Station Information
dartcore --- Geology
Station Information
Digitrack --- Single Beam
Survey information
heatflow --- Geology
Station Information
integratednavigation --- Navigation
Integrated navigation (SINS) data l-2-84-an.055
Integrated navigation (SINS) data l-2-84-an.056_eotcssp
Eotvos/course/speed/distance data l-2-84-an.070 (Provisional best file)
Eotvos/course/speed/distance data l-2-84-an.070_checkeot
Eotvos/course/speed/distance data l-2-84-an.070_degree
Eotvos/course/speed/distance data l-2-84-an.070-_240_280_422
Position update data l-2-84-an.020
Survey information
Position update data l-2-84-an.021
Integrated navigation (SINS) data l-2-84-an.051
Integrated navigation (SINS) data l-2-84-an.056
Eotvos/course/speed/distance data l-2-84-an.070.info
Eotvos/course/speed/distance data l-2-84-an.070.nav
Eotvos/course/speed/distance data l-2-84-an.070.navpt
Lines
Tape list
Eotvos/course/speed/distance data l-2-84-an.070_tmechk
Best file with nav in ArcInfo E00 format
transitsatellite --- Navigation
Survey information
Satellite data l-2-84-an.000
24channel --- Multichannel
Edited seismic shot point data l-2-84-an.422_070 (Provisional best file)
Scan l-2-84-an.full.tif
Survey information
stk.sgy.tar data l-2-84-an.stk.sgy.tar (Provisional best file)
Edited seismic shot point data l-2-84-an.422_070.nav
Edited seismic shot point data l-2-84-an.422_070.navpt
Edited seismic shot point data l-2-84-an.422
Image l-2-84-an.thumb.jpg
Edited seismic shot point data l-2-84-an.422_070.info
Scan l-2-84-an.small.tif
gradiometer --- Magnetics
Raw gradiometer data l-2-84-an.240
Raw gradiometer data l-2-84-an.240_070
Undefined l-2-84-an.290
Edited gradiometer data l-2-84-an.260_070 (Provisional best file)
Geometrics magnetics data l-2-84-an.280
Survey information
NGDC MGD77 data - Magnetics
gravity --- Gravity
Raw gravity data from analog meter l-2-84-an.111
Free Air Anomaly data l-2-84-an.162
Free Air Anomaly data l-2-84-an.163
Free Air Anomaly data l-2-84-an.163_070 (Provisional best file)
Survey information
analog holdings (paper rolls)
Gravity land tie data l-2-84-an.140
Free Air Anomaly data l-2-84-an.161
landtie
NGDC MGD77 data - gravity

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