Woods Hole Oceanographic Institution

Cruise Planning Synopsis


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AT-16

Ship

R/V Atlantis

Cruise Party

Timothy Eglinton: Chief Scientist, Principal Investigator
Woods Hole Oceanographic Institution Fye 111, MS#04 Woods Hole, Ma. USA 02543
+1 508 289 2627
teglinton@whoi.edu

Departure: Sep 10, 2010

Woods Hole

Arrival: Oct 5, 2010

Woods Hole

Operations Area

Northwest Atlantic Ocean
Lat/Lon: 40° 0.0′ N / 67° 0.0′ W
Depth Range: 200 / 5000
Will the vessel be operating within 200 NM of a foreign country? Canada
Are visas or special travel documents required? no

Science Objectives

The overall goal of the project is to examine the transport and export of particulate organic carbon (POC) over the NW Atlantic Ocean margin.  Specific objectives are to examine the role of the Deep Western Boundary Current in along-margin transport of POC. It is hypothesized that along- and across-margin transport of POC is important for supply of organic carbon to deep-ocean sediments.  Geochemical investigations of organic matter entrained in bottom and intermediate depth suspended particle (nepheloid) layers as well as sinking particles are planned as well as hydrographic surveys in order to place findings within the context of regional physical oceanography. Hydrographic surveys and sampling will occur along 3 across-margin transects in each case extending from the shelf-break to ~ 5000 m water depth (off Nova Scotia, off Cape Cod, and off Cape Hatteras).

We are planning a series of 3 across-margin transects designed to capture the sources and movement of particulate matter. We will be mostly doing CTD hydrocasts and large-volume (up to 1000L) in-situ filtration with McLane submersible pumps. We will also be deploying 2 sediment trap moorings and we may do some sediment coring (multicorer).  We hope to obtain high vertical and spatial resolution filter samples for detailed analysis of particle abundance and characteristics within intermediate-depth and bottom nepheloid layers. 

Science Activities

Sea-Bird Electronics, Inc. CTD rosette equipped with transmissometer and optical back scatter sensor.

Glider Autonomous Underwater Vehicle (AUV) equipped with CTD & optical backscatter sensor.

Sea floor-tethered mooring with Deployment of McLane Mark-7 time-series sediment traps.

Ship’s clean seawater intake.

McLane submrsible pumps (Water Transfer System, WTS).

 

Additional Info

Pre-cruise Planning Meeting: Visit WHOI
Meeting Notes: Meeting scheduled for 6/10

Stations:

Supporting documentation:

»Sept_10_cruise_version_6-09-10.pdf
»Cruise_track_Sept_2010_ver_6-09-10.xls

Funding

Funding Agency: NSF
Grant or contract number: OCE-0851350

Scientific Instrumentation for R/V Atlantis

Shipboard Equipment

Bathymetry System 12 kHz
Bathymetry System 3.5 kHz
ADCP 150 kHz
Multibeam
Science Underway Seawater System
Deionized Water System
Fume Hood
12 kHz Pinger for Wire Use
Navigation - Heading
Navigation - Position

CTD/Water Sampling

Seapoint STM turbidity sensor
911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
SBE43 oxygen sensor
Wet Labs ECO-AFL fluorometer
Wet Labs C*Star transmissometer (660nm wavelength)

Critical CTD Sensors

Hydrographic Analysis Equipment

Salinometer
Salt Bottles (2 cases of 125 ml provided)
Oxygen Sample Bottles (available in 150 ml sizes)

MET Sensors

Barometric Pressure
Wind speed and direction
Air temperature
Relative Humidity

Sediment Sampling

Multi-core

Sample Storage

Freezer -70°C 25 cu. ft.
Scientific Walk-in Freezer
Climate Controlled Walk-in
Refrigerator 8.6 cu. ft.

Navigation

Will you be using Long Base Line (LBL) navigation? no
How many nets? 0
How many tansponders? 0
Will you be using Ultra-short baseline (USBL) navigation?no

Winches

Mooring / TSE winch
CTD Winch with .322" Electro-mechanical wire
Hydro Winch with .25" hydro wire
Trawl Winch with 9/16th trawl wire

Standard Oceanographic Cables

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

Portable Vans

Isotope Van

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:

Radioactive Material

Radioiosotopes:yes

Additional Information

Is night time work anticipated on this cruise?yes
Specialized tech support (Seabeam, coring, other):
Seabeam?
Other required equipment and special needs:

Checklist & Notes

Checklist

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

Checklist

SSSG Tech: