OCEANUS CRUISE SYNOPSIS


Voyage - Leg:OC 406-2,3,4
Voyage Dates:25 Sep - 15 Oct 2004
Chief Sci(s):Chuck Nittrouer (Nittrouer)
Address: University of Washington
School of Oceanography
University of Washington
Seattle, WA 98195
Phone:206-543-5099
Email:nittroue@ocean.washington.edu
Cruise Objective:Deploy instruments, make measurements and collect samples of water column and seabed
Science Activities:CTD, box cores, Kasten cores, ADCP
Operations Area:Gulf of Lions
N43deg, E4deg
20-300 m
SSSG Tech:Patrick Rowe
sssg @oceanus.whoi.edu
Departure Port:Port
Agent:TBD
Arrival Port:Port
Agent: TBD
Installed Scientific Equipment:12 & 3.5 kHz transducer
ADCP
CTD/rosette with 10-liter Niskin bottles - CTD, transmission, fluorometer
Refrigerator
Chest freezer
WHOI-Provided Science Tools:
Program-Provided Science Tools:Kasten Core (Max Weight ~1200 lbs, max pull out ~2,500 lbs., 300 m depth
CTD - < 100 lbs - 200 m depth
Corelogger with Cs137 Source - Leg III
Core X-Ray machine - Leg III
Box Core
Piston Core
Shipboard Equipment/Nav:
Other Requirements:Night Work Anticipated - 24 hour ops for coring.
Storage Vans
Notes:We hope to send gear over and back with ship.

This cruise will be split into three legs
To minimize costs, the 1 Oct and 8 Oct transfers will be by small boat.

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Loading in Woods Hole
Dates: 1-3 Sep
Leaders: Chris Sherwood (USGS), Paul Hill (Dalhousie), Tim Milligan (BIO)
Main Deck: Container from UW (Nittrouer/Ogston) secured on starboard side, and filled with additional gear; one tripod and two corers secured on fantail
01 Deck: Container from APL (Gregg), and berthing van (filled with gear overflowing from other container, and for use on Legs 2 & 3)
Main Lab: Equipment for Leg 1 secured under counters

Pre-Cruise Preparations in Port
Dates: 23-24 Sep
Primary Work: Construction of four tripods on fantail
Participants: All Leg 1 participants

Leg 2
Dates: 25 Sep - 1 Oct
General Work: seismic profiling at night, instrument deployments during the day
Study Area: western Gulf of Lions, 50-500 m
Participants (14):
USGS, 4 scientists, Mike Field (chief scientist), seismic profiling
IFREMER (French), 1 scientist, Marina Rabineau, help USGS seismic profiling
UCSC/AOA, 1 scientist, TBA, help USGS seismic profiling
UW, 3 scientists, Andrea Ogston (leader), deploy two tripods, and four guard buoys
USGS, 2 scientists, Chris Sherwood (leader), deploy one tripod
ICM (Spanish), 2 scientists, Pere Puig/Albert Palaques (leaders), deploy one tripod and two moorings
UPerpignan (French), 1 scientist, TBA, help ICM
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Specifics – 4 tripods to be deployed with 4 guard buoys – waiting for deployment procedure.

CHIRP system (Edgetech SB 512i FSSB chirp sub-bottom profiler) - tow the chirp fish just below the keel on the Oceanus to get the instrument into quiet water for profiling. Survey area Water depths are 30 to 100 M. Plan A is to use 9/16" trawl wire as down line and wire tie conducting cable to it. It would go into the water in the evening and then recover in the morning. Plan B is to use the ship's Knudsen system for profiling if chirp fish not functional.

Minor coring to determine locations for tripods. (Box core or Van Veen Grab)

Surveying Eyeball to be lowered on .322 to study grain size of ocean floor for tripod placement. 100 meter conducting cable to be hand attached to .322 wire via snap clips. Eyeball softly touches bottom.

Blocks needed from vessel -
Block for 9/16” trawl wire or snatch block on crane for deployments.


Small-Boat Transfer
Date: 1 Oct / 1000 hr.
Location: Port
Transfers: 12 off, 10 on, 2 remain

Leg 3
Dates: 1 Oct - 8 Oct
General Work: box, kasten and piston coring - 24 hour operations
Study Area: western Gulf of Lions, 50-500 m; eastern Gulf of Lions, near mouth of Rhone
Participants (12):
UW, 2 scientists, Chuck Nittrouer (chief scientist), coring
TAMU, 2 scientists, Beth Mullenbach (leader), coring
ISMAR (Italian), 1 scientist, Stefano Miserocchi, coring
UCSC/AOA, 2 scientists, Dan Orange (leader), coring
USGS, 2 scientists, Homa Lee (leader), coring
ULaval (Canadian), 2 scientists, Jacques Locat (leader), coring
UBarcelona (Spanish), 1 scientist, Joan Fabres, coring
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Specifics – 24 hour coring operations planned

Box Core and Kasten Core will use 9/16 trawl wire.

Ewing Piston Corer requires a 25 ft. 1/2" leader clamped on 9/16” trawl wire. This is a lightweight piston corer using 10 or 20 ft lengths of 3" PVC pipe.

Core Logger and X-Ray machine used aboard in main lab

Blocks needed from vessel - Will block used for 9/16" wire have big enough throat for
9/16" wire and 1/2" leader clamped together?

Small-Boat Transfer
Date: 8 Oct / 1000 hr.
Location: Port
Transfers: 11 off, 12 on, 1 remains

Leg 4
Dates: 8 Oct - 15 Oct
General Work: instrument deployments (permanent and temporary), water-column and seabed
(Bothner corer) sampling
Study Area: western Gulf of Lions, 10-100 m
Participants (13):
OSU, 3 scientists, Rob Wheatcroft (chief scientist), coring, instrument deployment (permanent)
Dalhousie (Canadian), 1 scientist, Paul Hill, coring, instrument deployment (temporary)
BIO (Canadian), 2 scientists, Tim Milligan (leader), coring, instrument deployment (temporary)
UVa, 2 scientists, Pat Wiberg (leader), coring
ISMAR (Italian), 1 scientist, Stefano Miserocchi, coring
BC, 3 scientists, Gail Kineke (leader), instrument deployment (permanent), water sampling
UPerpignan (French), 1 scientist, Xavier Durrieu de Madron, water sampling
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Mostly shallow water operations (27-100 meters water depth)
Coring and instruments deployments during day, "Gafanhota" casts from hydroboom at night.

CTD casts to collect near bottom (~5 meters) water. CTD data to be collected as backup.

Deploy - (at 27meter site) - Profiling CTD and ARP Tripod (1,200 lbs) using ship's crane

Deploy/Recover – INSSECT (~450 lbs) deployed for 36-48 hours then recovered

Casts- Slow Corer(Bothner corer)(12 per day)(1,100 lbs, 11 ft. tall), ship's CTD for water collection (10 casts expected), "Gafanhota" casts (~100-150 lb CTD instrument which touches down on bottom)

Blocks needed from vessel - Snatch Block on crane boom for deployments. Quick release for deployments from crane
CTD block in normal place for CTD casts.

Special Needs - "Gafanhota" casts will be from the 0.322 wire switching from the CTD to the "Gafanhota"

Pre-Cruise Demob in Port
Dates: 15-16 Oct
Primary Work: Packing and removal of UW cargo container, Packing of another rented cargo container, stowage of some gear in berthing van (Lee and Locat should complete this at end of Leg 2)
Participants: All Leg 3 participants and Chuck Nittrouer
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Tripod/Instrument Deployment Methods

1. When the instrument is on the bottom or within a meter of the bottom, a release command is sent. As soon as the release is completed the glass ball (hardhat) clears the release and lowering line away from the instrument bringing the release to the surface for recovery. We have had great success with this method on the Oceanus.

2. Slip line method.(See Diagrams) . It can be accomplished but the Bosun suggests that an obtuse angle
for the slip line be used to make sure the slip line does not twist. This would mean having the tied off end at the bow and the slipped end coming over the side at the stern. It also requires the package to be lowered to below the
keel before triggering the quick release on the crane.
Navy Clearance Status:
Last Modified: 12/13/2006

Check List:Required?Comments
US Customs FormYesGear loaded at WHOI
Explosives ClearanceNo
Isotope Use ApprovalYesCs-137 in corelogger, X-Ray machine
Diplomatic ClearanceYesFrance, Spain
SCUBA DivingNo