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Metadata
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ID
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A-2-88-MB
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Also Known As
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A-2-88-NC
Dive 2131
Dive 2130
Dive 2129
Dive 2128
Dive 2127
Dive 2126
Dive 2125
Dive 2124
Dive 2123
Dive 2122
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Abstract
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United States Geological Survey, Menlo Park, California,Moss
Landing Marine Laboratories,Monterey Bay Aquarium Research
Institute. Chief Scientists: Bill Normark, Steve Eittreim.
Geological and Geophysical data (pushcore, grab, nets,
underwatercamera, underwatertelevision) of field activity
A-2-88-MB in Monterey Bay, Northern California from
10/21/1988 to 10/31/1988
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Organization
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United States Geological Survey, Menlo Park, California
Moss Landing Marine Laboratories
Monterey Bay Aquarium Research Institute
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Chief Scientist
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Bill Normark
Steve Eittreim
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Activity Type
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Geological and Geophysical
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Platform
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Atlantis II-Alvin
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Area of Operation
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Monterey Bay, Northern California
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Location map
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Bounding Coordinates
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36.75000
-123.01667 -122.03333
36.21667
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Dates
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10/21/1988 (JD 295) to 10/31/1988 (JD 305)
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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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Bill Normark
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Chief Scientist, USGS Western Region
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Steve Eittreim
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Chief Scientist, USGS Western Region
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Gregor Cailliet
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Biologist, Dive 2124
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T. Tengdin
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Pilot, Dive 2124, 2128
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James Watanabe
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Biologist, Dive 2127
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Paul Tibbetts
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Pilot, Dive 2127, 2131
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Gary Greene
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Geologist, Dive 2128, 2131, USGS Western Region
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Chris Harrold
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Biologist, Dive 2128
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Robert Embley
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Geologist, Dive 2130
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Frederick Rentschler
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Biologist, Dive 2130
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P. Hickey
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Pilot, Dive 2130
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Charles Baxter
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Biologist, Dive 2131
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Equipment Used
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pushcore
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grab
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nets
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underwatercamera
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underwatertelevision
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Purpose
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To sample the oldest sections of sediment exposed in the eroded part
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of the present Monterey fan valley. To investigate the modern erosional/
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depositional processes of the valley floor and the lithology and age of
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eroded and outcropping valley-wall strata.
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Summary
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Ten Alvin dives from the mother ship Atlantis II were conducted in
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the Monterey fan valley. Two observers' seats on each of these dives were
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occupied by a geologist and a biologist. Camera bottom-sled tows were made
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along 2- to 8-km long tracks during the non-dive time aboard the Atlantis II.
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Samples of sea-floor muds were obtained using 30-cm core tubes (up to six
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per dive) pushed into the bottom with one of Alvin's manipulators. More
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consolidated sediments and rocks were sampled using the manipulator claw and
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biological nets. Color photographs from the bow-mounted Alvin camera and
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video tapes from both the bow-mounted black and white silicon-intensified
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target camera and the arm-mounted color camera were obtained regularly
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during times on bottom with Alvin. Collection of smaples of lifeforms as well
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as their mud substrates was made on three separate dives using Alvin's
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manipulator.
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The ten Monterey Canyon Alvin dives were:
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2122 10/21/88 Emory Kristof, Bill Hamner, P. Hickey
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2123 10/22/88 Emory Kristof, Eugenie Clark, Paul Tibbetts
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2124 10/23/88 Bill Normark, Gregor Cailliet, T. Tengdin
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2125 10/24/88 Emory Kristof, Eugenie Clark, G. Rajcula
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2126 10/25/88 Bruce Robison, Richare Gore, P. Hickey
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2127 10/26/88 Steve Eittreim, James Watanabe, Paul Tibbetts
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2128 10/27/88 Chris Harrold, Gary Greene, T. Tengdin
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2129 10/28/88 Chris Harrold, Michael Foster, G. Rajcula
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2130 10/29/88 Robert Embley, Frederick Rentschler, P. Hickey
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2131 10/30/88 Gary Greene, Charles Baxter, Paul Tibbetts
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Publications
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Eittreim, S.L., Embley, R.W., Normark, William R., Greene, H.G., McHugh, C.M., and
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Ryan, W.B.F., 1989, Observations in Monterey Canyon and fan valley using the submersible
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Alvin and a photographic sled: U.S. Geological Survey Open-File Report 89-0291, 28 p.,
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1 sheet.
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Embley, Robert W., Eittreim, S.L., McHugh, C.H., Normark, W.R., Rau, G.H., Hecker, B.,
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DeBevoise, A.E., Greene, H. Gary, Ryan, W.B.F., Harrold, C., and Baxter, C., 1990, Geological
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setting of chemosynthetic communities in the Monterey Fan Valley system: Deep-Sea Research,
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Part A: Oceanographic Research Papers, v. 37, no. 11, p. 1651-1667.
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Got Help?
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For A-2-88-MB, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, NGDC Info, notes, owner, ports, project, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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