Research Vessels

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Research Vessels
R/V Atlantis
R/V Blue Heron (Lake Superior)
R/V Knorr
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Sea surface temperature (infrared) Advanced Very
High Resolution Radiometer (AVHRR)
Regional
Global SST anomalies
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Sea surface Temperature Gulf Stream Meanders
and Rings
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Ocean color from space SeaWiFS Chlorophyll
Satellite swaths during orbit
Chlorophyll around Antarctica
Galapagos Islands
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International Constellation of Ocean Color
Satellites
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FY-1D Sept. 12, 2002 1338 GMT
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SeaWiFS true color (visible wavelengths)
Yangtze River flood
Hurricane George off Florida
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CODAR
Note individual satellite pixels of size 1 km2
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Wind over the ocean from radar interferometry
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Global bathymetry is known partly from gravity
measurements
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ROVs
Jason Jr.
ARGO
ARGO
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Slocum Electric Glider
(an AUV)
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Glider Operation
Moves in a saw-toothed trajectory
Forward speed of 1 knot
Depth range 4-200 meters
Navigation done using GPS, dead reckoning and
the altimeter
Average deployment duration is 30 days and 1500 km
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AUVs
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Adaptive Sampling with REMUS AUVs
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DSRV ALVIN Woods Hole Oceanographic Inst.
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Deep Rover
A plastic sphere with motors, propellers, arms,
and instruments
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Sonar echo sounding for detailed bathymetry
Marine archeology sidescan sonar image (hard to
believe its not a photo)
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Deep-tow
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Seismic profiling
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Seismic profiling strong sound at right
frequencies to penetrate sediment layers
Ancient river bed cut through Pre-existing shelf
sediments
Towed chirper gets transponder closer
to Bottom, away from ship
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Now, we move from remote to in situ sampling
methods. In situ means in place, so these
methods measure the properties of the seawater
in which they sit.
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Deep Ocean bottom-anchored buoys - the TOGA/TAO
Array.
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An anchored buoy for studying the effect of
atmospheric dust on surface ocean chemistry and
biology
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Free drifting buoys
Holey sock drogue
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Inadvertent drifting buoy experiments -- the
Lagrangian approach.
Fixed current meter The Eulerian approach
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New Jersey Shelf Observing System (In Situ Data)
Storm Center
(GMT)
Met Tower Data
Storm Center
Storm Center
(GMT)
(EST)
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Bottom dredge For collecting rocks from A region
with little sediment (e.g. mid-ocean ridge) Used
on the Challenger expedition and
virtually unchanged today. (top view)
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Deep-sea sediment core locations
Deep-sea sediment coring -gt paleoceanography
The Vema
Core repository
gravity corer
Core recovery
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Deep-sea rotary drilling
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Water sampling what are we looking for?
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Niskin bottles in the wet lab of a ship
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Towed fish for Clean water sampling
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Collecting uncontaminated samples from the
seawater stream pumped into the ships lab from
the towed fish
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CTD C conductivity (salinity) Ttemperatu
re Ddepth
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Rosette frame Schematic Loaded with bottles on
deck
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A crawling profiler CTD for use on a
bottom-anchored mooring
Current meter
Pressure (depth) sensor
Salinity and temperature sensors
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Sampling suspended particles from seawater in
situ.
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Sediment trap for catching sinking particles
Top view (baffle)