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USGS Coastal and Marine Geology Program

Field Activity Details for field activity I790AT

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AKA: none

Other ID: I-7-90-AT,AMASSEDS

Status: Completed

Organization(s): University of South Carolina, North Carolina State University, State University of New York, Universidade Federal Fluminense, Universidade Federal Do Para, Federal University of Rio De Janeiro

Funding Program(s):

Principal Investigator(s):

Affiliate Investigator(s): Chuck Nittrouer (MSRC, SUNY), Alberto Figueiredo

Information Specialist(s):

Data Type(s): Sampling: Biology, Sampling: Geology, Environmental Data: CTD, Seismics: Sub Bottom Profiler, Environmental Data: Conductivity, Environmental Data: Dissolved Oxygen, Environmental Data: Fluorescence, Environmental Data: Nitrate, Environmental Data: Temperature, Environmental Data: pH

Scientific Purpose/Goals: 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.

Vehicle(s):

Start Port/Location:

End Port/Location:

Start Date: 1990-05-08

End Date: 1990-05-20

Equipment Used: boxcore, Kastencore, pistoncore, Shipekgrab, CTD, 3.5khz, seismic, planktonnet, watersamples

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 of Activity and Data Gathered: 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.

Staff: Mead Allison

Affiliate Staff:
Robert Aller (MSRC
SUNY) - Scientist
Jim Mackin (MSRC
SUNY) - Scientist
Steve Kuehl (USC) - Scientist
Neil Blair (NCSU) - Scientist
William Wallace (MSRC
SUNY) - Graduate Student
Mark Green (MSRC
SUNY) - Graduate Student
Tom Pacioni (USC
SC) - Graduate Student
Heidi Vigil (MSRC
SUNY) - Graduate Student
Mardi Montague (MSRC
SUNY) - Student
Alberto Figueiredo (chief Scientist
UFF) - Co
Heloisa Varges (UFF) - Graduate Student
Carlos Beisl (UFF) - Student
Julio Faleiro (UFF) - Student
Soraya Patchneelam (UFF) - Graduate Student
Ricardo Silva (UFF) - Graduate Student
Hsambasiva Patchneelam (UFF) - Scientist
Debora Peixoto (UFF) - Graduate Student
Ercilio Faria (Scientist
UFPA) - Jr.
Mauro Ferreira (UFPA) - Student
Almicar Mendes (UFPA) - Student
Ismar Carvalho (UFRJ) - Student
Renato Cruz (UFRJ) - Scientist
Paulino Souza (UFRJ) - Student
Marcio Brum (UFF) - Student
Dennis Guffey (TAMU
Tx) - Technician
Nelson Carnerro (DHN) - Naval Observer

Notes:

Staff information imported from InfoBank
Chuck Nittrouer (MSRC, SUNY) - Chief Scientist
Robert Aller (MSRC, SUNY) - Scientist
Jim Mackin (MSRC, SUNY) - Scientist
Steve Kuehl (USC) - Scientist
Neil Blair (NCSU) - Scientist
Mead Allison (MSRC, SUNY) - Graduate Student
William Wallace (MSRC, SUNY) - Graduate Student
Mark Green (MSRC, SUNY) - Graduate Student
Tom Pacioni (USC, SC) - Graduate Student
Heidi Vigil (MSRC, SUNY) - Graduate Student
Mardi Montague (MSRC, SUNY) - Student
Alberto Figueiredo (chief Scientist, UFF) - Co
Heloisa Varges (UFF) - Graduate Student
Carlos Beisl (UFF) - Student
Julio Faleiro (UFF) - Student
Soraya Patchneelam (UFF) - Graduate Student
Ricardo Silva (UFF) - Graduate Student
Hsambasiva Patchneelam (UFF) - Scientist
Debora Peixoto (UFF) - Graduate Student
Ercilio Faria (Scientist, UFPA) - Jr.
Mauro Ferreira (UFPA) - Student
Almicar Mendes (UFPA) - Student
Ismar Carvalho (UFRJ) - Student
Renato Cruz (UFRJ) - Scientist
Paulino Souza (UFRJ) - Student
Marcio Brum (UFF) - Student
Dennis Guffey (TAMU, Tx) - Technician
Nelson Carnerro (DHN) - Naval Observer

Location:

Atlantic Ocean

Boundaries
North: 19.75 South: -9.75 West: -59.75 East: -29.75

Platform(s):

photo of Columbus Iselin
Columbus Iselin

Publications

Rine, J.M. and N., Charles A., 1990, Report on field measurements and sampling during AmasSeds Cruise II - CI9004. Marine Sciences Research Center, State University of New York, NY. November 1990, 94 p.

Portals/Viewers

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
boxcore --- Biology
Geology
Kastencore --- Geology
pistoncore --- Geology
Shipekgrab --- Geology
CTD --- Surveys (geochemical)
Experiments (geochemical)
CTD
3.5khz --- Sub Bottom Profiler
seismic --- Sub Bottom Profiler
planktonnet --- Biology
watersamples --- Conductivity
CTD
Dissolved Oxygen
Fluorescence
Nitrate
pH
Temperature
Turbidity
Wave

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