+--------------------------------------------------------------------------+ | ATLANTIS CRUISE SYNOPSIS | +--------------------------------------------------------------------------+ Voyage - Leg: AT 03-05 Voyage Dates: 21 - 25 Aug 1997 Chief Sci(s): Craig Smith Address: Univ. of Hawaii/Oceanography 100 Pope Rd. Honolulu, HI 96822 Phone: (808) 956-8623 Email: csmith@soest.hawaii.edu Cruise Objective: Third and final cruise in a series to study the mechanisms that affect the rate of bioturbation in the deep-sea, specifically tracer-dependent mixing in the Santa Catalina Basin. Science Activities: 3 ALVIN dives; otter trawling, multiple coring, sediment trap recovery Operations Area: Catalina Basin: 33-10.5N, 118-26.6W SSSG Tech: Greg Herlein, sssg@atlantis.whoi.edu Departure Port: San Diego Agent: Paxton, Shreve & Hays 2191 Main St., Suite 6 P.O. Box 82237 San Diego, California 92113 Tele: (619) 232-8941 Fax: (619) 232-3006 Tom Jenkins Arrival Port: San Diego Agent: Paxton, Shreve & Hays 2191 Main St., Suite 6 P.O. Box 82237 San Diego, California 92113 Tele: (619) 232-8941 Fax: (619) 232-3006 Tom Jenkins Installed Scientific CTD winch (not required) Equipment: Data logging (Standard) Trawl winch, 9/16" wire IMET data (standard) Crane Pingers, wire use Isotope van De-ionized water (possible) Chest Freezer (1) -70 Freezer (possible) Fume hoods WHOI-Provided Science Long-base navigation (using our transponder net Tools: already in place) 16 functional Alvin tube cores Large basket (or use of ours) Scanning sonar working well Alvin's sponson camera All video cameras in good working order Program-Provided Science Tools: Shipboard Equipment/Nav: Other Requirements: 1) We will be implanting and relocating treatments in our OIS transponder net that we placed on the seafloor from the A-II in Jan., 1996. Thus, we will require long-baseline navigation capabilities. 2) We will be sampling with our Ekman box cores (20 cm on a side) eight particle-introduction treatments we implanted in Jan and Mar of 1996. These are marked with triplane reflectors and mapped in our transponder net. Ideally, we would like to collect up to 6 Ekman cores per dive (this may require use of or large Alvin basket, which we will bring along). 3) We will be placing cages over sea cucumbers and then dumping tracer particles through a hole in the top of the cage; this operation will be very similar to our deployments of tracer particles last year. Then, after various time spans, we will return to each cage, take an Alvin tube core in front of the sea cucumber, and then scoop up the holothurian with a net and drop the net into a water-tight container. We will provide nets and containers, although we might want to use a "clam bucket" of yours, if you have one available. 4) We will collect free-running sea cucumbers with scoop nets and drop them into a container. 5) We will try to locate 2 kelp parcels we dropped at the site in June, collect 6-8 Alvin tube cores at each, and put some of the kelp into an container in the basket. 6) we plan to do some photosurveys for megafauna, skiing along the bottom. Notes: 1) Extensive night time program requires remaining on station after last dive. 2) There is a low probability of CTD operations on this leg. 3) The isotope van will be required to stay in aft position for this leg. 4) Two private film crews to participate, Shelley Lauzon informed. 5) Probable transfer of film personnel to/from small boat while on station. Film crew will embark the ship at-sea during the day of 23 August Navy Clearance Status: Last Modified: 05/19/1998 Check List: Required? Comments US Customs Form No Explosives Clearance No Isotope Use Approval Yes C14, cesium-139 and yttrium-88 (DeMaster) Diplomatic Clearance No SCUBA Diving No