+--------------------------------------------------------------------------+ | ATLANTIS CRUISE SYNOPSIS | +--------------------------------------------------------------------------+ Voyage - Leg: AT 11-32 Voyage Dates: 8 - 19 Sep 2005 Chief Sci(s): Keir Becker (Becker/Cowen) Address: University of Miami - RSMAS 4600 Rickenbacker Causeway Miami, FL 33149 Phone: 305-361-4661 Email: kbecker@rsmas.miami.edu Cruise Objective: Service and recover/deploy wellhead (and in one case seafloor) instrumentation at 7 "CORK" instrumented boreholes near Juan de Fuca Ridge. Science Activities: Operations Area: NE Pacific 48DEGN 128DEGW 2400-2700 SSSG Tech: sssg@atlantis.whoi.edu Departure Port: Seattle, WA Agent: Inchcape Shipping Services (ISS) 100 West Harrison St. Suite N250, North Tower Seattle, WA 98119 Contact: Patty Williams tel. (206) 622-8568 (24 hrs) fax: (206) 622-1864 email: iss.seattle@iss-Shipping.com Arrival Port: Seattle, WA Agent: Same as above Installed Scientific Pinger for wire use Equipment: CTD/rosette system - 10 liter Niskin bottle (* see note below) CTD-LSS-transmissometer Freezer, -70, Fume hood DI-water WHOI-Provided Science ALVIN Tools: Major water samplers Low temperature probe Hi temp probe Push cores, 3 Search sonar In-hull computer for CORK communications Program-Provided Cowen water column samplers? Science Tools: Some of the instrument deployments/recoveries will require use of elevators. We will supply 3000-m-rated syntactic floats made by Flotation Technologies. These are in the form of four 24" hemispheres (each nominally 55 lbs +) and six 2" x 24" discs (each nominally 16 lbs +) that can be assembled on threaded SS rod to customize the buoyancy to the desired level. We will also supply some lengths of the rod, spectra rope, shackles etc. Jannasch and Pargett will be bringing some newly designed Alvin-held fluid samplers for use at well-head valves. They may also want to use the Alvin samplers. Shipboard 1 net at setting of 4 closely spaced CORKs? Equipment/Nav: Doppler / GPS Nav USBL Nav Will transponder navigation be required? 8/9:Transponders to be deployed if there is time before the 1st dive. The CORK positions are very well known and they are strong CTFM targets. Probably the three dives at the three isolated sites could do without transponders. Other Requirements: Through-hull penetrations for 4 different underwater-mateable connectors for RS232/422 communication with CORK instrumentation: 1. Ocean Design "ODBlue" (4 cond., <10 lbs) 2. SeaCon CM2000 (6 cond, <10 lbs) 3. Ocean Design Nautilus (6 cond., ~5 lbs) 4. Cowen system (specs ?) Not all UMC's to be used on each dive; will provide on-basket cabling with in-line connectors (SeaCon All-Wet series) so that pressure dummies can be installed if UMC not needed on given dive. 8/9:Science party bringing their own elevator system, checking on how much weight will be required. Night Time Water Column Work possible for Cowen - details later For possible night ops we would use the ships standard conducting hydrowire with their CTD and rosette. We would mount our instrument (which will be self-contained) on the rosette frame after consultation with the Sci Tech. The instrument is 32 lbs in water, and its dimensions are 8" diam x 18 " long. The ISEA instrument that we would like to mount on the CTD rosette HAS been pressure tested. It is 8" diam x 18" long; weighs 32 lbs in water. No connection to the ISEA is necessary; but we do want the CTD-LSS-transmissometer data. Please contact me directly if you need further information about this operation. 8/9: Sci party will bring brackets for mounting on CTD and pressure test docs. 8/9: Kurt Heinze will deploying 4 iridium ARGOS floats: ARGO is a global array of 3000 profiling floats that collects pressure, temperature, and salinity data at predefined depths and reports its data to global data centers via the argos satellite system. We have been currently developing the next generation of profiling floats with continuous profiling CTDs that will report their data via the iridium phone network. The deployment procedure is to lower the float over the stern with a rope and will take ~5 minutes. I can do the deployment after we are leaving a station; the vessel does need to be moving 1-2 kts forward so the float will not drift back into the vessel during deployment. I am not too particular about the deployment location except that I need water depth > 2000m and at least 0.5 degree of longitude away from the 2000m bathymetric mark. Two wooden crates 81" x 22" x 17" with 2 floats each. Each float is ~3 feet in length and 8 inches in diameter weighing ~50 lb each. I will be deploying only 3 of the 4 floats. Notes: Of the 7 borehole sites, 4 are original CORK designs visited many times with Alvin in past, and 3 (1026B, 1301A, 1301B) are new designs installed in summer of 2004 and revisited once with ROPOS. Three sites (857D, 1024C, and 1025C) are isolated and will require one devoted dive each. The other four sites (1026B, 1027C, 1301A, 1301B) are closely spaced and the remaining dives will probably each visit more than one of these four sites. Possible night-time work for Cowen one or two nights at Endeavour Axis. Site Table: Hole 857D: 48DEG 26.517' N,128DEG 42.651'W, 2421 m Hole 1024C: 47DEG 54.531' N, 128DEG 45.005'W, 2612 m Hole 1025C: 47DEG 53.247' N,128DEG 38.919'W, 2606 m Hole 1027C: 47DEG 45.387' N,127DEG 43.867'W, 2656 m Hole 1026B: 47o 45.759' N, 127o 45.552' W, 2658 m Hole 1301A: 47o 45.2095' N, 127o 45.8329' W, 2658 m Hole 1301B: 47o 45.2286' N, 127o 45.8262' W, 2658 m At 1026B, the "top plug" of the sensor string is on the wellhead, and 2-3 m of spectra rope runs out of the top of the hole to the top plug. See ROPOS frame grabs. This is not in the way, and initial data recovered using ROPOS indicates that the hole is properly sealed with the bottom plug. We would like to devote a small effort to stuffing the neutral or slightly positively buoyant spectra rope into the hole and installing the top plug, but not at any risk of damage to the rope. The platforms at 1301A and 1301B are in slight depressions (~1m), not elevated like the original CORKs. Backup laptop for CORK communications already tested - hope to use Alvin in-hull computer 8/9: Science party will be loading compressed gasses and chemicals at UW and removing all waste and chems at cruise end. Navy Clearance Status: Granted 08/30/05: WITHIN 5 NM RADIUS OF 47-45N, 127-45W DURING PERIOD 081500Z THRU 190000Z SEP 05 WITHIN 5 NM RADIUS OF 47-54N, 128-42W DURING PERIOD 081500Z THRU 190000Z SEP 05 WITHIN 5 NM RADIUS OF 48-26N, 128-43W DURING PERIOD 081500Z THRU 190000Z SEP 05 Last Modified: 01/19/2006 Check List: Required? Comments US Customs Form No Explosives Clearance No Isotope Use Approval No Diplomatic Clearance Yes Canada SCUBA Diving No