|
|
|
|
Metadata
|
|
ID
|
I-4-90-AT
|
|
Also Known As
|
AMASSEDS_CRUISE_II
C19002
|
|
Abstract
|
Woods Hole Oceanographic Institution,University of
Washington,United States Geological Survey, Menlo Park,
California,North Carolina State University,Louisiana
Universities Marine Consortium,Bedford Institute of
Oceanography. Chief Scientists: Rocky Geyer, John Maddock.
Geological data (CTDmeter, underwatercamera, boxcore, ADP,
Geoprobe, turbiditymeter, currentmeter) of field activity
I-4-90-AT in Amazon Shelf from 03/09/1990 to 03/21/1990
|
|
Organization
|
Woods Hole Oceanographic Institution
University of Washington
United States Geological Survey, Menlo Park, California
North Carolina State University
Louisiana Universities Marine Consortium
Bedford Institute of Oceanography
|
|
Chief Scientist
|
Rocky Geyer
John Maddock
|
|
Activity Type
|
Geological
|
|
Platform
|
Columbus Iselin
|
|
Area of Operation
|
Amazon Shelf
|
|
Location map
|
|
|
Bounding Coordinates
|
19.75000
-59.75000 -29.75000
-9.75000
|
|
Ports
|
leave Belem, Brazil
arrive Belem, Brazil
|
|
Dates
|
03/09/1990 (JD 068) to 03/21/1990 (JD 080)
|
|
Analog Materials
|
list
|
|
Index map
|
|
|
Crew
|
|
Rocky Geyer
|
Chief Scientist, WHOI
|
|
John Maddock
|
Co-chief Scientist
|
|
Brent McKee
|
Scientist, Lumcon
|
|
Kim McCoy
|
Technician
|
|
Craig Marquette
|
Technician, WHOI
|
|
Chris Sherwood
|
Student
|
|
Ellen Petticrew
|
Technician
|
|
Tim Milligan
|
Technician, Bedford Institute of Oceanography
|
|
Pete Swarzenski
|
Student, Lumcon
|
|
Greg Booth
|
Student
|
|
Tom Pacioni
|
Student
|
|
Steve Harden
|
Student, North Carolina State University
|
|
Gail Kineke
|
Student, University Of Washington
|
|
George Tate
|
Student, USGS
|
|
Mead Allison
|
Student
|
|
Alfredo Bernedo
|
Scientist
|
|
Paulo Cavalante
|
Student
|
|
Julio Faleiro
|
Student
|
|
Jose Neto
|
Student
|
|
Sven Muller
|
Student
|
|
Cleise Cordeiro
|
Student
|
|
Sergio Oliveira
|
Student
|
|
Carlos Correa
|
Technician
|
|
Marcelo Viana
|
Student
|
|
Marcelo Travassos
|
Student
|
|
|
Equipment Used
|
|
CTDmeter
|
|
underwatercamera
|
|
boxcore
|
|
ADP
|
|
Geoprobe
|
|
turbiditymeter
|
|
currentmeter
|
|
|
Purpose
|
|
To measure the physical, chemical and geological properties in the
|
|
water column and seabed within the Amazon zone, that region extending from the
|
|
mouth of the river across the shelf where there are strong gradients in
|
|
salinity.
|
|
|
Information to be Derived
|
|
CTD casts for suspended solids and analyzed for chemical species, pictures of flocculants within the water column, hourly profiles, samples, currents as a function of depth, temperature, salinity.
|
|
|
Summary
|
|
Between the mouth of the Para River and anchor station 1, 5 CTD
|
|
stations were occupied. Anchor station 1 was occupied between 1800 on 10 March
|
|
and 1215 on 11 March. CTD casts were obtained once per hour, accompanied by 10
|
|
liter water samples at various depths. These samples were filtered for suspended
|
|
solids and analyzed for chemical species. A plankton camera was attached to the
|
|
CTD to take pictures ofthe flocculants within the water column. Hourly profiles
|
|
were obtained with the Gafanhoto profiler. 8 box cores were obtained during the
|
|
anchor station. A 600 kHz acoustic Doppler current profiler was operated
|
|
continuously during the anchor stations and throughout the cruise, providing a
|
|
continous record of that currents as a function of depth under the ship. During
|
|
a portion of the anchor station a S4 electromagnetic current meter was deployed
|
|
to measure currents, temperature and salinity. 9 CTD casts were conducted
|
|
between anchor station 1 and the site of GEOPROBE. Attempts to recover GEOPROBE
|
|
were abandoned because of rough weather. Anchor station 2 was occupied between
|
|
1700 on 12 March and 1900 on 13 March during which hourly CTD and gafanhoto
|
|
casts were performed. Continous profiles with the S4 current meter were also
|
|
performed. 2 box cores were also taken at the end of the station. After anchor
|
|
station 2, the ship transited to mooring site M-2 to verify the moored equipment
|
|
was intact then returned to site of GEOPROBE to attempt recovery. The recovery
|
|
attempt was unsuccessful. Anchor statin 3 offshore of Rio Cunani was conducted
|
|
between 0143 on 15 March to 0315 on 16 March. Anchor station 4, also offshore of
|
|
Rio Cunani was occupied on 18 March at 1800 until 19 March at 1300. During this
|
|
anchor station coastal sampling was conducted by UFPA and US scientists. The
|
|
same set of measurements were made at stations 3 and 4 as at station 2. 7 CTD
|
|
cast were obtained enroute to anchor station 5. Anchor station 5 was occupied at
|
|
1100 on 18 March to 1300 on 19 March. Same measurments were taken as at other
|
|
anchor stations. A survey including 24 CTD casts extended from anchor station 5
|
|
to the 60 m isobath to anchor station 6. Anchor station 6 was performed at the
|
|
river mouth, 12 m water depth, with same measurements taken as other anchor
|
|
stations plus the addition of 6 box cores. Anchor station 7 reoccupied the site
|
|
of anchor station 1. Between 0700 and 1930 on 21 March profile measurments and 6
|
|
box cores were obtained.
|
|
|
Publications
|
|
Rine, James M. and Nittrouer, Charles A. 1990. Report on field measurements and sampling during AmasSeds Cruise II - CI9002. Marine Sciences Research Center, State University of New York, NY. November 1990. 94 p.
|
|
|
Got Help?
|
For I-4-90-AT, we would appreciate any information on -- information to be derived, equipment used, information specialist, project, publications, purpose, summary.
|
|
