+--------------------------------------------------------------------------+ | OCEANUS CRUISE SYNOPSIS | +--------------------------------------------------------------------------+ Voyage - Leg: OC 399-3 Voyage Dates: 15 Feb - 15 Mar 2004 Chief Sci(s): Michael Lomas (Lomas) Address: Bermuda Biological Station for Research 17 Biological Lane St. George's GE01 Phone: 441-297-1880 x303 Email: mlomas@bbsr.edu Cruise Objective: Short term biogeochemical response to the passage of weather fronts in the Sargasso Sea. (1) 1) Measure the daily time course of N input and uptake, within the euphotic zone of the Sargasso Sea, through several destratification/stratification events during the winter convective mixing period. (2) 2) Quantify the main floristic changes (using a diversity of chemotaxonomic methods) and the size distribution change in the phytoplankton community during and after these destratifica-tion/stratification events. (3) 3) Determine the fate of N (primarily particulate flux, DON export, non-gravitational flux or remineralization) that is detrained during destratification events in order to better understand the relationships between new production and export production. (4) 4) Use the data collected to validate and enhance a 1-D model of the primary production and biogenic particle export cycle that has been developed for the BATS site, as well as increase the general robustness of biological/physical models for this and similar temperate latitude sites. Science Activities: CTD, ADCP, XBT's, PITS deployment and recovery, In Situ pump deployment and recovery Operations Area: NW Sargasso Sea 31 40N 64 10W - ~5 hour transit from Georgetown 500m SSSG Tech: sssg @oceanus.whoi.edu Departure Port: St. Georges, Bermuda Agent: Master R/V Oceanus Attn: Scientist's Name c/o Meyer Shipping Somers Wharf 14 Water St. St. Georges, GE BX BERMUDA Contact: Capt. John Moore tel. (441) 297-2303 fax: (441) 292-1583 email: jmoore@meyer.bm Arrival Port: St. Georges, Bermuda Agent: Same as above Installed Scientific ADCP Equipment: CTD/Rosette 24X10L - O2 sensor,fluorometer,par sensor QSP200L4S XBT System Deionized Water Salinometer Oxygen Titration Apparatus Fume Hood Refrigerator Chest Freezer -70 Deg Freezer IMET - full sensor suite WHOI-Provided Science Isotope Van Tools: SSSG Dynacon Winch - ISM documents given to Captain Program-Provided Winding Cart, Baskets, Science Tools: In Situ Pumps 2nd Refrigerator for main lab. Shipboard Equipment/Nav: Other Requirements: Night Work Anticipated Particle interceptor trap deployment, drum to hold 450m 5/8" line in situ incubations deployment , 150 m 5/8" line Notes: Standard isotope handling procedures will be employed in the removal/disposal of radioisotopes used on the cruise Isotope Approval has been approved for Dave Nelson for 32Si - Samples and dry waste to be offload at BBSR at end of cruise. The rad waste drums were specified by the Rad Safety committee and purchased through the WHOI safety office. They can be secured outside of the van. Transfer of waste is to only be down via hose connections. No funnels to be used for the transfer of liquid waste. The drums were specified to be metal for security and ease of deck tie down. The tops were specified to have the ability to be locked to prevent unauthorized access. Michael Lomas to use 14C - authorization has been approved. Hazardous Material - 32Si, 14C, Hydrochloric acid, Sulfuric Acid, Sodium Hyrdoxide, Liquid Nitrogen, formaldehyde/paraformaldehyde There will need to be a block on the A-frame that can allow a ~4" D-ring to slide through.* What we'll have is the line on a spool, then we'll need to transfer it to the winch drum (before we sail) and the line will be fed from the winch drum, through the block on the A-frame each time we deploy.* As we are putting the actual traps in place (on the way out, or taking them out of line as it comes in), we'll need a line with a safety hook that can attach below a trap (for example) allowing the release of tension on the winch drum so that the trap can be put in or taken out.* Then the winch drum line will be reconnected and hauled in/paid out until the next trap comes along. At the end we put on a string (3) of surface floats that are connected to the main spar float (4 in total) that is directly connected to the trap line.* So this step by step process just keeps getting repeated until its all in or our.* Deployment will be parallel to the stern, so the winch drum should be direct line to the block on the A-frame.* There will only be the safety line as a 'free' line on the deck the deployment line will all be on the winch drum. Deployment/recovery turnaround every 3-4 days. Total recovery/deployment ~2.5 hours We will be doing in situ incubations for our isotope productivities.* We do this much the same way (winch drum through block on A-frame) but it is infinitely easier. It is one solid line and we just clamp items at specified depths.* There is no stoppering of the line at all.* But we would need a smaller drum that can hold ~150m of the 5/8" poly line.* This deployment (I'll still write up a protocol) is really easy, pay it out until you get the sample depth, attach samples, pay out to next depth, etc.. Daily recovery/deployment expected. In Situ pump deployment allowed on the .322 CTD cable only in the first 300 meters of cable in the unlikely possibility of damage to cable from clamping pump on the wire. Navy Clearance Status: Last Modified: 12/13/2006 Check List: Required? Comments US Customs Form Yes Dempsey Lott Van, Isotope Van Explosives Clearance No Isotope Use Approval Yes Dave Nelson 32Si, Michael Lomas C14 - Authorization granted Diplomatic Clearance Yes Bermuda -granted SCUBA Diving No