Woods Hole Oceanographic Institution
Cruise Planning Synopsis
Tioga - Calypso | |
Ship | |
| R/V Tioga | |
Cruise Party | |
| Ken Buesseler: Principal Investigator null +1 508 289 2309 kbuesseler@whoi.edu Meg Estapa: Chief Scientist, Principal Investigator null null mestapa@whoi.edu |
Departure: May 8, 2018 | |
| WHOI | |
Arrival: May 10, 2018 | |
| WHOI | |
Operations Area | |
| tbd, potentially near pioneer array, closest location with deep water and reasonable currents | |
| Lat/Lon: | |
| Depth Range: 1000 / 2000 | |
| Will the vessel be operating within 200 NM of a foreign country? | no |
Science Objectives | |
| Test of autonomous subsurface sediment traps (aka Neutrally Buoyant Sediment Traps- NBSTs) | |
Science Activities | |
| THIS IS ONE PLAN FOR 2 separate single days of TIOGA use day 1) Steam to 1000 m water depth at shelf/slope break (exact location tbd- looking for low currents) and put 5-6 NBSTs in water and return to WHOI. Deployment time is about 15 min each. Weight in air about 200 lb (I think I sent photo already to Ken) return to port 24-48 hours. NBSTs surface at end of that time period and provide GPS position and strobe light day 2 (appox 1-2 days later) Steam to GPS location and pick up. Pick up 15-30 min each. Some time searching to locate will also be needed. They tend to surface within a <1 to few km of each other if deployed as here in same location on day 1. Timing of pick up is somewhat flexible, but the longer on the surface the faster they may drift, so we will work with the Captain and currents to pick a suitable deployment location. | |
Additional Info | |
| Pre-cruise Planning Meeting: Visit WHOI | |
| Meeting Notes: I am at WHOI and already contacted Ken Houlter about this | |
Stations: | |
Supporting documentation: | |
| »NBST.jpeg | |
Funding |
| Funding Agency: NSF | |
| Grant or contract number: 85999500 |
Scientific Instrumentation for R/V Tioga |
Shipboard Equipment | |
| A-Frame | |
| Navigation - Heading | |
| Navigation - Position | |
Equipment Deployment | |
| What type of equipment will you deploy? See science plan and description of NBST - about 200 lb in air | |
| What are the dimensions? see photo. Built around APEX float with added sensors tubes. Approx. 5' tall, 2' dia for outermost sample collection tubes 3 | |
| What is the weight in air? 200 lb | |
Hazardous Material | |
| Will hazardous material be utilized? | no |
| Describe deployment method and quantity: NSBT is slid to rail/pick up point, lift by its own attached tether and lowered vertically in the water. A quick release on the line/loop is used to release the tether. For retrieval, we use boat hooks on a long pole (10+ feet) and/or grappling hooks to snag line, fasten to ships line/winch over the A frame and position to lift vertically on board. We will have racks on board to fasten in between deployment and retrieval. We will have at least 2 people on board to assist. Key steps are locating via GPS and binoculars (if done in dark flasher is obvious target), and bringing vessel along side to grap the floating yellow tether line that is permanently attached to each NBST with a loop at its end. | |
Additional Information | |
| Brief operations description or comments: | |
| Other required equipment and special needs:We have used these NBSTs on vessels ranging from ocean class & much smaller. This is a test of equipment, and timing can be adjusted. Once in the water the return at a pre-set/adjustable time and we are somewhat flexible in that deployment window. We will know more about this window/timing after another cruise in mid-March on the Endeavor with 2 NBSTs | |
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: | |