Woods Hole Oceanographic Institution

Cruise Planning Questionnaire

LatMix 2012


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: Principal Investigator, Chief Scientist
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: Woods Hole on Feb 22, 2012

Arrival: Woods Hole on Mar 17, 2012

Mobilization Date: Feb 19, 2012

Demobilization Date: Mar 19, 2012

Supporting documentation:

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

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.  

Pre-cruise planning meeting: Teleconference

Co-ordinating with Eric Benway and Craig Lee


Funding Agency: ONR/NAVY #N00014-09-1-0266

- added ONR/NAVY #N00014-09-1-0266 on Jan 3, 2012 10:53 AM by Eric Benway

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

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

Storage Notes:


Will you be using Long Base Line (LBL) navigation? no

Will you be using Ultra-short baseline (USBL) navigation for other than Alvin operations? no



Navigation Notes:


CTD Winch with .322" Electro-mechanical wire

Winch Notes: Full description at http://web.uvic.ca/~jklymak/MVP/MVPOps.pdf

Wire Notes:
Slip ring required? no Number of conductors: 
Non-standard wire required? no Type: 
Traction winch required? no Describe: 

Other Science Vans:

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

Radioiosotopes: no

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.
Date Submitted: Jan 3, 2012 1:42 PM by Dr Jody Klymak