|
|
|
|
Metadata
|
|
ID
|
I-7-90-AT
|
|
Also Known As
|
AMASSEDS
|
|
Abstract
|
University of South Carolina,Universidade Federal
Fluminense,State University of New York,North Carolina State
University,Federal University of Rio De Janeiro,Federal
University of Para. Chief Scientists: Chuck Nittrouer,
Alberto Figueiredo. Geological and geophysical data (boxcore,
Kastencore, pistoncore, Shipekgrab, CTDmeter, 3dot5khz,
seismic, planktonnet, watersamples) of field activity
I-7-90-AT in Amazon Shelf, Atlantic Ocean from 05/08/1990 to
05/20/1990
|
|
Organization
|
University of South Carolina
Universidade Federal Fluminense
State University of New York
North Carolina State University
Federal University of Rio De Janeiro
Federal University of Para
|
|
Chief Scientist
|
Chuck Nittrouer
Alberto Figueiredo
|
|
Activity Type
|
Geological and geophysical
|
|
Platform
|
Columbus Iselin
|
|
Area of Operation
|
Amazon Shelf, Atlantic Ocean
|
|
Location map
|
|
|
Bounding Coordinates
|
19.75000
-59.75000 -29.75000
-9.75000
|
|
Dates
|
05/08/1990 (JD 128) to 05/20/1990 (JD 140)
|
|
Analog Materials
|
list
|
|
Index map
|
|
|
Crew
|
|
Chuck Nittrouer
|
Chief Scientist, MSRC, SUNY
|
|
Robert Aller
|
Scientist, MSRC, SUNY
|
|
Jim Mackin
|
Scientist, MSRC, SUNY
|
|
Steve Kuehl
|
Scientist, USC
|
|
Neil Blair
|
Scientist, NCSU
|
|
Mead Allison
|
Graduate Student, MSRC, SUNY
|
|
William Wallace
|
Graduate Student, MSRC, SUNY
|
|
Mark Green
|
Graduate Student, MSRC, SUNY
|
|
Tom Pacioni
|
Graduate Student, USC, SC
|
|
Heidi Vigil
|
Graduate Student, MSRC, SUNY
|
|
Mardi Montague
|
Student, MSRC, SUNY
|
|
Alberto Figueiredo
|
Co-chief Scientist, UFF
|
|
Heloisa Varges
|
Graduate Student, UFF
|
|
Carlos Beisl
|
Student, UFF
|
|
Julio Faleiro
|
Student, UFF
|
|
Soraya Patchneelam
|
Graduate Student, UFF
|
|
Ricardo Silva
|
Graduate Student, UFF
|
|
Hsambasiva Patchneelam
|
Scientist, UFF
|
|
Debora Peixoto
|
Graduate Student, UFF
|
|
Ercilio Faria
|
Jr., Scientist, UFPA
|
|
Mauro Ferreira
|
Student, UFPA
|
|
Almicar Mendes
|
Student, UFPA
|
|
Ismar Carvalho
|
Student, UFRJ
|
|
Renato Cruz
|
Scientist, UFRJ
|
|
Paulino Souza
|
Student, UFRJ
|
|
Marcio Brum
|
Student, UFF
|
|
Dennis Guffey
|
Technician, TAMU, Tx
|
|
Nelson Carnerro
|
Naval Observer, DHN
|
|
|
Equipment Used
|
|
boxcore
|
|
Kastencore
|
|
pistoncore
|
|
Shipekgrab
|
|
CTDmeter
|
|
3dot5khz
|
|
seismic
|
|
planktonnet
|
|
watersamples
|
|
|
Purpose
|
|
To study the movement of sediment particles in the water column, the
|
|
accumulation of sediment particles on the seabed, and the effects that sediment
|
|
particles have on geochemical processes in the water column and seabed.
|
|
|
Information to be Derived
|
|
Stratigraphic analysis, sedimentary structures, radiochemistry, bulk
|
|
density, mineralogy and texture, infaunal assemblages present on the Amazon
|
|
shelf, bottom profiles, high-resolution reflection seismic profiles, control of
|
|
redox reactions by iron oxides in the seabed.
|
|
|
Summary
|
|
Measurements and samples were collected at 42 different stations on the
|
|
continental shelf. Of these 42 stations, 35 were examined in detail by multiple
|
|
coring. As many as 8 cores were taken at sites where smaples were required for
|
|
geochemistry, biology and stratigraphy. Cores taken primarily for stratigraphic
|
|
analysis were box cores (23), kasten cores (53), and one piston core (1). In
|
|
addition, 11 stations were sampled with Shipek grab sampler. Cores were
|
|
radiographed to document sedimentary structures and the majority were subsampled
|
|
for laboratory analysis involving radiochemistry, bulk density, mineralogy and
|
|
texture. Box core or grab samples were analyzed from a majority of stations by
|
|
scientists from UFRJ as a survey of infaunal assemblages present on the Amazon
|
|
shelf. In addition to sea bottom campling, 3.5 kHz profiles were obtained along
|
|
the transit lines connecting each station and approximately 100 km of GEOPULSE
|
|
high-resolution reflection seismic profiles were collected. During this leg two
|
|
coastal sampling trips were made to the Cabo Cassipore and Ponta do Costa areas
|
|
with small boats by scientists from UFPA, UFF and the USA.
|
|
|
|
The control of redox reactions by iron oxides in the seabed was examined at 6
|
|
stations by sampling sediment-water solute fluxes and interstitial water
|
|
chemistry and by monitoring reaction rate experiments, authigenic mineral
|
|
formation, and benthic community activity (stations 3204, 3205, 3211, 3216,
|
|
3221, and 3226). Two stations (3201 and 3209) were sampled in the southern
|
|
portion of the study area for measurement of sediment-water fluxes and
|
|
benthic-community characteristics. Grab samples were taken in sands at the
|
|
seaward-most station, 3229. Water column samples and CTD profiles were obtained
|
|
at all the seabed geochemistry/benthic biology stations (3201, 3204, 3205, 3209,
|
|
3211, 3216, 3221, and 3226). Surface plankton tows and bottom water samples were
|
|
taken at stations 3201, 3204, 3211, 3209, 3216, and 3221.
|
|
|
Publications
|
|
Rine, James M. and Nittrouer, Charles A. 1990. Report on field measurements and
|
|
sampling during AmasSeds Cruise III - CI9004. Marine Sciences Research Center,
|
|
State University of New York, NY. November 1990. 135 p.
|
|
|
Got Help?
|
For I-7-90-AT, we would appreciate any information on -- information to be derived, equipment used, information specialist, ports, project, publications, purpose, summary.
|
|
