Woods Hole Oceanographic Institution

Cruise Planning Synopsis

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AT19 (Lee)


R/V Atlantis

Cruise Party

Brian Guest: Principal Investigator
Woods Hole Oceanographic Institution Bigelow 103, MS#12 Woods Hole, Ma. USA 02543
+1 508 289 3275

Jody Klymak: Chief Scientist, Principal Investigator
University of Victoria 3800 Finnerty Rd P.O. BOX 3055 STN CSC Victoria , BC Canada V8W4A3
+1 250 472 5969

Jim Ledwell: Principal Investigator
Woods Hole Oceanographic Institution Bigelow 111, MS#12 Woods Hole, Ma. USA 02543
+1 508 289 3305

Kipp Shearman: Principal Investigator
Oregon State University USA
+1 541 737 1866

Miles Sundermeyer: Principal Investigator
University of Massachusetts, Dartmouth USA
+1 508 999 8898

Departure: Feb 22, 2012

Woods Hole

Arrival: Mar 17, 2012

Woods Hole

Operations Area

Gulf Stream (north or south wall)
Lat/Lon: 37° 0.0′ N / 67° 0.0′ W
Depth Range: 0 / 300 m
Will the vessel be operating within 200 NM of a foreign country? no
Are visas or special travel documents required? no

Science Objectives

Mapping strong fronts in the vicinity of the Gulf Stream in conjunction with operations on R/V Knorr (UVic+everyone).

Tending gliders released in the experiment area (OSU)

Releasing and tracking dye released in experiment area (WHOI + UMASS)

Releasing surface floats, perhaps retrieving (UMass)

The overall goal is to better understand lateral processes in the upper ocean.  For this experiment, particular interest is in what happens with significant wind and deep mixed layers.  This requires mapping out the large-scale features (Atlantis), and detailing the turbulent processes that result (Knorr).  

Science Activities

R/V Knorr will be deploying floats and doing tight (5-10 km surveys) around the floats.  R/V Atlantis will be doing larger scale "radiator" patterns towing a free-falling CTD package (MVP - Klymak).  Operational speeds will be between 5 and 10 knots, weather and instrument dependent.  The radiators will be aligned across large-scale features, and be approximately 30 km long, and maybe 15 km cross-feature.  

We anticipate that the cruise will be broken into three or four "experiments", where a feature is chosen, perhaps after a short survey, and assets deployed.

At the beginning of each experiment, three or four gliders will be released (Shearman), preferably upstream of major currents.  They will run cross-front surveys, ideally independently of the ship.  If these run too far astray, we may need to break off regular sampling to chase them.

Also, there will be a dye release, hopefully as close to the R/V Knorr as practical, and likely based on a location and depth they suggest to us.  The hope is that the dye and the floats on the R/V Knorr will be as co-located as practical.  The dye will either be flourosceine or rhodamine, both harmless in the amounts we are using.  

Additional Info

Pre-cruise Planning Meeting: Teleconference
Meeting Notes: Co-ordinating with Eric Benway and Craig Lee


Supporting documentation:

Notes: UWASHINGTON 300 ADCP to be installed in spare transducer well at WHOI Feb 8 - Feb 19.


Funding Agency: ONR/NAVY
Grant or contract number: N00014-09-1-0266

Scientific Instrumentation for R/V Atlantis

Shipboard Equipment

ADCP 75 kHz
Navigation - Heading
Navigation - Position
Transducer well for visiting instrumentation

Shipboard Communication

Basic Internet access via HiSeasNet
Is there a need to receive data from shore on a regular basis?
Is there a need to transfer data to shore on a regular basis?

CTD/Water Sampling

911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors

Critical CTD Sensors

We won't need the rosette

MET Sensors

Air temperature
Barometric Pressure
Relative Humidity
Short Wave Solar Radiation
Wind speed and direction
Storage Notes:


Will you be using Long Base Line (LBL) navigation? no
How many nets? null
How many tansponders? null
Will you be using Ultra-short baseline (USBL) navigation?no


Navigation Notes:


CTD Winch with .322" Electro-mechanical wire
Winch Notes: Full description at http://web.uvic.ca/~jklymak/MVP/MVPOps.pdf

Winch Notes:

Standard Oceanographic Cables

Slip ring required? no
Non-standard wire required? no
Traction winch required? no

Specialized Deck Equipment

Mooring Deployment/Recovery Equipment Required: no Type: 
Cruise Specific Science Winch Required: no Type: 
Nets Required: no Type: 

Over the Side Equipment

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? yes
Details: UVic MVP winch Full description at http://web.uvic.ca/~jklymak/MVP/MVPOps.pdf

Winch mounts w/ adapter plates to 2x2 hole pattern.

Special Requirements

Elecrical Power: yes Identify 440 V 3 Phase, 17.6 A
Equipment Handling: yes Identify: Fending poles,
Inter/intraship Communications: no Identify: 
Science Stowage: no Identify: 
Water: no Identify: 

Additional Cruise Items/Activities

Explosive Devices:no
Portable Air Compressors:no
Flammable Gases:no
Small Boat Operations:no
SCUBA Diving Operations:no

Hazardous Material

Will hazardous material be utilized?yes
Describe deployment method and quantity:
Dye releases are per Ledwell group standard practices. Isopropynol, freshwater, and either uranine or rhodamine are mixed on deck, and deployed over the side on the CTD rosette (to get the proper depth rating).

Radioactive Material


Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
Other required equipment and special needs:
300 ADCP from University of Washington to be installed into Atlantis' spare transducer well.

Checklist & Notes


U.S. Customs Form: no
Diplomatic Clearance: no
Date Submitted:
Date Approved:
Agent Information:
Eric Benway
-Woods Hole Oceanographic Institution

Attn: Scientist's Name - LATMIX - AT19
c/o Eric Benway
266 Woods Hole Rd.
Woods Hole, MA 02543

Contact: Eric Benway
Phone: (508) 289-3770
Fax: (508) 457-2185
Email: ebenway@whoi.edu
Isotope Use Approval: no
Isotope Notes:
SCUBA Diving: no


SSSG Tech:
MOB = Feb 19 - 21
DEMOB = Mar 18- 19.