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ID O-2-99-SC
Abstract Chief Scientists: Homa Lee, Brian Edwards. Sampling data (pistoncore, 3dot5khz, boxcore, Kastencore, vibratingcore, VanVeengrab) of field activity O-2-99-SC in Los Angeles Shelf, California from 06/17/1999 to 06/25/1999
Project/Theme Los Angeles Shelf Pollution and Waste Disposal Project
Chief Scientist Homa Lee
Brian Edwards
Activity Type Sampling
Platform Ocean Olympic
Area of Operation Los Angeles Shelf, California, Southern California
Bounding Coordinates
34.13035
-119.23401    -117.22647
32.62611
Dates 06/17/1999 (JD 168) to 06/25/1999 (JD 176)
Analog Materials list
Crew
Homa Lee Chief Scientist, USGS Western Region
Brian Edwards Co-chief Scientist, USGS Western Region
Bill Robinson Electrical Technician, USGS Western Region
Jon Kolak Geochemist, USGS Western Region
Megan McQuarrie Navigation, ORAU
Wendy Dahl Navigation/FACS, Eco
Kathy Presto Geologist/210 Pb, ORAU
Gini Gandhok Geologist, Volunteer
Tim Elfers Geologist/210 Pb Specialist, Skidaway
Jim Nickels Vibracore Technician, ASI
Hal Williams Marine Technician, USGS Western Region (off 6/19/99)
Chris Sommerfield Geologist, USGS Woods Hole
Hank Chezar Camera, USGS Western Region (on 6/19/99)
Kevin O'Toole Marine Technician, USGS Western Region
Walt Olson Marine Technician, USGS Western Region
Roger Lewis Biologist, On and Off 6/23/99 (1500-2300)
Russ Brigendine Captain,
Jeff Stringer 1st Mate,
Paul Giron 2nd Mate
Dave Malsch Chief Engineer
Mike Hill Cook
Joe Kelly Deckhand,
Equipment Used
pistoncore
3dot5khz
boxcore
Kastencore
vibratingcore
VanVeengrab
Purpose
Our goal was to move as much bottom sediment onto
the ship as we could over the next two weeks. Our coring operations had a
variety of purposes and extended all the way from near San Diego to the northern
edge of Monterey Bay.
Information to be Derived
During the first two days of the cruise, 12 piston cores were taken ranging
                  in length up to 4 m. The cores and all sediment samples were logged for 
        density,
                  sound velocity, and magnetic susceptibility using a multi-sensor 
        logger.
                  The next five days, 20 piston cores, 15 vibracores, 31 box cores, 6 grab
                  samples, and 1 kasten core were acquired. A bottom photograph was taken 
        with
                  each box core using Hank Chezar's camera system. A representative of 
        the
                  City of Los Angeles Department of Sanitation sampled box cores for 
        living things.
                  Jon Kolak sampled some station stations as part of a study of 
        hydrocarbons
                  in sediment. The grab samples were taken for Pete Dartnell, who is 
        working to
                  use acoustic backscatter measurements as a measure of habitat. Five 
        cores were
                  taken for the Southern California Coastal Water Research Project to be 
        analyzed
                  for pesticides and metals. On June 25, a group of Monterey Bay Aquarium 
        Research
                  Institute scientists began a five-day piston-coring venture. 25 piston 
        cores were
                  taken for MBARI in three different environments; a heavily pockmarked 
        area of
                  Big Sur, a feature identified as "Smooth Ridge" in Western Monterey 
        Bay, and the
                  head of Monterey Canyon. The last day was spent in Monterey Bay taking 
        8 box cores
                  for Jon Kolak. Roger Lewis will be using PB210 methods to determine 
        accumulation
                  rates, and jon will be looking at geochemical tracers to estimate the 
        original
         source of the sediment.
Summary
The first two days were dedicated to taking piston cores at locations
that had been preselected by Bill Normark. Bill's goal was to sample sedimentary
reflectors that could be identified in the Huntec lines and subsequently dated.
This chronologic information could then be used to estimate most recent movement
on observed faults. In all, 12 pistons cores were taken, ranging in length up to
4 m. These, and all of the other sediment smples taken on our cruises, were
logged for density, sound velocity, and magnetic susceptibility using our
multi-sensor logger.
Notes
related field activity -- O-1-99-SC (geophysics)
          for first 2 days of O-2-99-SC
The next five days were committed to the Los Angeles Shelf Pollution and
Waste Disposal Project. The goals of our project are to understand the
sedimentology and oceanography of Santa Monica Bay, one of the most
human-impacted offshore areas on the West Coast, and to use this
understanding to forecast the fate of contaminated sediment. This is
our last major sampling year, and we used this opportunity to obtain
cores for a broad variety of purposes. In all, we acquired 20 piston
cores, 15 vibracores, 31 box cores, 6 grab samples, and one very smelly
Kasten core from a "sludge" deposit. We will be dating the piston,
box, and vibracore samples using Pb-210 and C-14 techniques to develop
a better understanding of sedimentation conditions in Santa Monica
Bay during the late Holocene with special emphasis on the last 100 years.
Chris Sommerfield, a USGS post-doc at Woods Hole, is focusing on the
last few thousand years, and Clark Alexander, as part of a coop with
the Skidaway Institute of Oceanography, is considering the last 100
years. A bottom photograph was taken with each box core using Hank
Chezar's camera system. A representative of the City of Los Angeles,
Department of Sanitation, participated in one day of the cruise, sampling
box cores for living things. Jon Kolak, a USGS post-doc in Menlo Park,
sampled some stations as part of a study of hydrocarbons in sediment.
The grab samples were taken for Pete Dartnell, who is working to use
acoustic backscatter measurements as a measure of habitat. Five cores
were taken for the Southern California Coastal Water Research Project
to be analyzed for pesticides and metals. Our sampling work in Santa
Monica Bay was hugely successful, and we now have adequate sample
resources to complete our study.
Publications
Lee, H.J., McQuarrie, Megan, and Hibbeler, Lori, 2003, Tracking contaminants
in Santa Monica Bay, offshore of Greater Los Angeles: U.S. Geological Survey
Fact Sheet 155-02:  
geopubs.wr.usgs.gov/fact-sheet/fs155-02/

Lee, Homa J., and Weisberg, Stephen, eds., 2003, Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, 342 p.

Dojiri, M., Yamaguchi, M., Weisberg, S.B., and Lee, Homa J., 2003, Changing anthropogenic influence on the Santa Monica Bay watershed, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 1-14.

Gardner, James V., Dartnell, Peter, Mayer, Larry A., and Hughes Clarke, John E., 2003, Geomorphology, acoustic backscatter, and processes in Santa Monica Bay from multibeam mapping, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 15-4.

Edwards, Brian D., Dartnell, Peter, and Chezar, Henry, 2003, Characterizing benthic substrates of Santa Monica Bay with seafloor photography and multibeam sonar imagery, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 47-66.

Leecaster, Molly, 2003, Spatial analysis of grain size in Santa Monica Bay, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 67-78

Hein, James R., Dowling, Jennifer S., Schuetze, Anthony, and Lee, Homa J., 2003, Clay-mineral suites, sources, and inferred dispersal routes; Southern California continental shelf, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 79-102

Noble, Marlene A., and Xu, J.P., 2003, Observations of large-amplitude cross-shore internal bores near the shelf break, Santa Monica Bay, CA, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 127-149.

Sommerfield, Christopher K., and Lee, Homa J., 2003, Magnitude and variability of Holocene sediment accumulation in Santa Monica Bay, California, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 151-176.

Alexander, Clark R., and Venherm, Claudia, 2003, Modern sedimentary processes in the Santa Monica, California continental margin; sediment accumulation, mixing and budget, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 177-204.

Bay, Steven M., Zeng, Eddy Y., Lorenson, Thomas D., Tran, Kim, and Alexander, Clark R., 2003, Temporal and spatial distributions of contaminants in sediments of Santa Monica Bay, California, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 255-276.

Greenstein, Darrin, Bay, Steven M., Jirik, Andrew, Brown, Jeffrey, and Alexander, Clark R., 2003, Toxicity assessment of sediment cores from Santa Monica Bay, California, in Lee, Homa J., and Weisberg, Stephen, eds., Integrated assessment of an urban water body; Santa Monica Bay, California: Marine Environmental Research, v. 56, no. 1-2, p. 277-297.
Got Help? For O-2-99-SC, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, kms of navigation, national plan, NGDC Info, organization, owner, ports, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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Times   061.times    

O-2-99-SC location map of where navigation 

equipment operated
O-2-99-SC location map of where navigation 

equipment operated

 
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