Woods Hole Oceanographic Institution

Cruise Planning Synopsis

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AR15 Andres "PEACH"


RV Neil Armstrong

Cruise Party

Magdalena Andres: Chief Scientist, Principal Investigator
Woods Hole Oceanographic Institution Clark 311A, MS#21 Woods Hole, Ma. USA 02543
+1 508 289 2660

Departure: Apr 15, 2017

Woods Hole

Arrival: Apr 29, 2017

Woods Hole

Operations Area

Cape Hatteras
Lat/Lon: 35° 0.0′ N / 75° 15.0′ W
Depth Range: 30 / 4000
Will the vessel be operating within 200 NM of a foreign country? N/A
Are visas or special travel documents required? no

Science Objectives

The PEACH project will identify the processes that control the exchange of waters between the shelves along the eastern seaboard of the US (Middle Atlantic Bight and Southern Atlantic Bight) and the open ocean. The processes will be investigated to determine the dominant forcing mechanisms (e.g., Gulf Stream, atmosphere, buoyancy). The understanding of shelf-deep ocean exchange gained through PEACH will be applicable to other regions where shelf and basin-scale currents converge. The detailed examination of shelf response made possible by the sampling scheme, the dynamical understanding achieved by a coupled observation-model exploration of dynamics, and the simulation skill developed over the wide seasonal and interannual variation in forcing will transform our capacity to anticipate the response of the coastal ocean to forecasted climatic evolution of forcing in the coming decades. 

Science Activities

During the transit from Woods Hole to the study-site (off Cape Hatteras):

-       Steam along the 200-m isobath with the shipboard ADCP logging velocity data.

-       Deploy ~12 XBTs (while underway)

-       Deploy one glider (in daylight roughly at 38Ëš 20.2´ N near the latitude of Ocean City, MD)

-       Deploy 4-8 Argo floats (some during transit, moving offshore to waters > 2000 m depth; others to be deployed at the study-site)


At the study-site (exact order of operations is strongly weather dependent) deploy moorings and conduct a CTD cast at each site.

-       Deploy 2 met-moorings (at sites B1 and B2) in 30 m of water. After each deployment, a small boat will be required so the techs can climb on the mooring to re-connect the battery and set the antenna.

-       Deploy 9 ADCP moorings (at sites B1, B2, A1-A4, A6-A8) in water depths ranging from 30 m to 200 m. These will have to be lowered carefully to the correct depth (particularly those on the steep slope).

-       Deploy 7 PIESs bottom landers (at sites P1-P7) in water depths ranging from 900 m to 4000 m.  This will require use of the through-hull transducer to communicate with the instruments during deployment as the instrument is falling through the water column to the sea bed. Conduct a full-water-column CTD cast at each site (deepest cast ~4000 m).

-       Conduct a bathymetric survey near 35ËšN

-       Conduct high-horizontal resolution CTD transects across features of interest to be determined real-time via satellite info from SSH and SST (i.e. eddies, shelfbreak front).  This may extend into the transit home.


During the transit from the study-site home to Woods Hole

-       complete any CTD feature transects

-       Run the EK80 while underway


Additional Info

Pre-cruise Planning Meeting: Teleconference/Visit WHOI
Meeting Notes: The meeting will likely include 3 PIs from WHOI (Andres, Todd, and Gawarkiewicz) and one or two techs. In addition, 1 to 3 PIs/techs will likely join by telecon
Media personnel on board: Video, Writer
During the project, the Advanced Media and Visualization Lab at UNC CSI will document the research activities and create digital media outreach content for the project including the following: • Regular research blogs for website content: Short, informal blog style web content on the process of the research cruise, including photos and narrative. • Production of video vignettes on the project. Topics for video production include: o Overall project video: A 5-7 minute video on the project as a whole, highlighting the importance and significance of the work, and the methods used in the research project. o Technology: Production of 2-3 minute videos on the technology used to gather data for the project o Scientists and Researcher Mini-Bios: 1-2 Minute videos on individual researchers and their roles in the project • Photo documentation will include delivery of an indexed Lightroom catalogue of photos from the research cruise


Supporting documentation:



Funding Agency: NSF
Grant or contract number: #OCE-1558521

Scientific Instrumentation for R/V Armstrong

Shipboard Equipment

Bathymetry System 12 kHz
ADCP 300 kHz
Sippican XBT System (Mark 21)
Bathymetry System 3.5 kHz
ADCP 150 kHz
EM122 (12 kHz) Multibeam Echosounder
EK80 Sonar
Dynamic Positioning System
ADCP 38 kHz
EM710 MkII (40 to 100 kHz) Multibeam Echosounder

Shipboard Communication

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

CTD/Water Sampling

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

Critical CTD Sensors

MET Sensors

Barometric Pressure
Air temperature
Relative Humidity
Wind speed and direction
Short Wave Solar Radiation
Long Wave Solar Radiation
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:
Winch Notes:
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? no

Special Requirements

Elecrical Power: no Identify 
Equipment Handling: no Identify: 
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:
There are lithium batteries contained in some of the equipment.

Radioactive Material


Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
We will likely do the PIES deployments at night, with a full water column CTD cast after each PIES deployment
Other required equipment and special needs:

Checklist & Notes


U.S. Customs Form: no
Diplomatic Clearance: no
Date Submitted:
Date Approved:
Agent Information:
Isotope Use Approval: no
Isotope Notes:
SCUBA Diving: no


SSSG Tech: