Woods Hole Oceanographic Institution
Cruise Planning Synopsis
| view revisions | |
AT42-01: Lang - Lost City 2015 | |
Ship | |
| R/V Atlantis | |
Vehicles | |
| ROV Jason | |
Cruise Party | |
| William Brazelton: Principal Investigator University of Utah USA +1 801 587 9455 william.brazelton@utah.edu Gretchen Fruh-Green: Principal Investigator ETH-Zurich Switzerland +1 999 999 9999 fruh-green@erdw.ethz.ch Deborah Kelley: Principal Investigator University of Washington USA +1 206 543 9279 kelley@ocean.washington.edu Susan Lang: Chief Scientist University of South Carolina 701 Sumter St Columbia, SC USA 29208 +1 803 777 8832 slang@geol.sc.edu Marvin Lilley: Principal Investigator University of Washington School of Oceanography P.O. BOX 355351 Seattle, WA USA 98195 +1 206 543 0959 lilley@u.washington.edu |
Departure: Sep 8, 2018 | |
| Woods Hole | |
Arrival: Oct 1, 2018 | |
| San Juan | |
Operations Area | |
| Mid-Atlantic Ridge, 30N | |
| Lat/Lon: 30° 12.0′ N / 42° 12.0′ W | |
| Depth Range: 650 / 4500 | |
| Will the vessel be operating within 200 NM of a foreign country? | N/A |
| Are visas or special travel documents required? | no |
Science Objectives | |
Objective 1: Mantle rocks comprise significant portions of the seafloor, and microbial communities hosted within them may be important mediators of carbon and energy exchange between the deep Earth and the surface biosphere. Given the abundant metabolic energy potentially available in these ubiquitous mantle rocks, the microbial communities hosted within them may represent a significant proportion of the active subsurface biosphere. To better understand the extent of the serpentinite subsurface, this project will address the question: What limits biological activity in the serpentinite subsurface? Specifically, the proposed work will test the hypotheses: (1) microbial diversity spans a wider range of temperature-pH conditions than currently recognized and (2) the scarcity of ΣCO2 is a key biological limitation to serpentinization-driven ecosystems that can be overcome by the metabolic activity of one or a few foundation species. Objective 2: A recent expedition carried out by the International Ocean Discovery Program in Fall 2015 drilled a series of boreholes at the top of the Atlantis Massif, in an East-West profile. In several cases, water appeared to be buoyantly rising from the hole after drilling. Several boreholes were outfitted with plugs, making it possible to return to these sites and sample pristine subsurface fluids. The objective is to sample fluids from the boreholes where possible and to visually inspect some of the remaining boreholes to determine their status. | |
Science Activities | |
Objective 1 (10 science days): Sample fluids and rocks from multiple locations across the Lost City hydrothermal field. The goal is to collect co-registered fluid, volatile, filter, and chimney samples from four to eight distinct sites within the field. Fluids and volatiles will be sampled using traditional Major and GasTight samplers as well as newer samplers that include a scaled-up GasTight sampler (1500 mL instead of 150 mL) and a large volume water sampler that can collect multiple samples of fluids (2 – 10L) and filters (unlimited volume). Our highest priority is to collect as many high-quality fluid samples as possible from the same site. This may require multiple-day Jason dives rather than more frequent, shorter dives. A minimum of four sets of high-quality samples from four different sites could meet our science objectives, and sampling 6-8 sites could be attempted, time-permitting. Our highest priority sites are Marker 2, Marker H, Marker 3, Marker C, and the ‘Beehive’. Objective 2 (2 science days): Sample fluids from locations that that have borehole plugs (M0068B; M0071B; M0072B; M0075). The top of the borehole plugs are sealed with a ball valve that would be opened by connecting a top cap with a t-handle. Visually inspect the boreholes drilled during IODP Expedition 357. When Jason is not in the water we plan to deploy water casts with the CTD/Niskin rosette. | |
Additional Info | |
| Pre-cruise Planning Meeting: Teleconference | |
| Media personnel on board: TBD | |
Stations: | |
Supporting documentation: | |
| »Preliminary_List_of_Operations_for_Lost_City_cruise_Sept_2018.pdf | |
Funding |
| Funding Agency: NSF | |
| Grant or contract number: OCE-1536702 |
Scientific Instrumentation for R/V Atlantis |
Shipboard Equipment | |||||||||||
| Bathymetry System 12 kHz | |||||||||||
| Bathymetry System 3.5 kHz | |||||||||||
| Deionized Water System | |||||||||||
| Relay Transponder for Wire Use | |||||||||||
| 12 kHz Pinger for Wire Use | |||||||||||
| Transponder Navigation - Sonardyne USBL | |||||||||||
| Navigation - Heading | |||||||||||
| Multibeam | |||||||||||
| Fume Hood | |||||||||||
| Navigation - Position | |||||||||||
Shipboard Communication | |||||||||||
| Basic Internet access via HiSeasNet | |||||||||||
| Is there an expectation to use Skype or any other real-time video conference program? | |||||||||||
CTD/Water Sampling | |||||||||||
| 911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors | |||||||||||
| SBE43 oxygen sensor | |||||||||||
| Seapoint STM turbidity sensor | |||||||||||
| Wet Labs C*Star transmissometer (660nm wavelength) | |||||||||||
Critical CTD Sensors | |||||||||||
Hydrographic Analysis Equipment | |||||||||||
| Dissolved Oxygen Titration System (Brinkmann Titrator) | |||||||||||
| Salinometer | |||||||||||
Sample Storage | |||||||||||
| Climate Controlled Walk-in | |||||||||||
| Freezer -70°C 25 cu. ft. | |||||||||||
| Freezer -70°C 3.2 cu. ft. ea. | |||||||||||
| Refrigerator 8.6 cu. ft. | |||||||||||
| Scientific Walk-in Freezer | |||||||||||
| Storage Notes: | |||||||||||
Navigation | |||||||||||
| Will you be using Long Base Line (LBL) navigation? | no | ||||||||||
| How many nets? | null | ||||||||||
| How many tansponders? | null | ||||||||||
| Will you be using Ultra-short baseline (USBL) navigation? | no | ||||||||||
Navigation | |||||||||||
| GPS | |||||||||||
| LBL | |||||||||||
| USBL | |||||||||||
| Navigation Notes: | |||||||||||
Winches | |||||||||||
| CTD Winch with .322" Electro-mechanical wire | |||||||||||
| Hydro Winch with .25" hydro wire | |||||||||||
| Winch Notes: Will do several CTD casts both over the Lost City field (~750 m water depth) and to full ocean depth on the Mid-Atlantic Ridge and Atlantis Fracture zone (~4500 m water depth) | |||||||||||
| Winch Notes: | |||||||||||
Standard Oceanographic Cables | |||||||||||
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Portable Vans | |||||||||||
| Chemical Storage Van | |||||||||||
Specialized Deck Equipment | |||||||||||
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Over the Side Equipment | |||||||||||
| Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? | no | ||||||||||
Special Requirements | |||||||||||
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Additional Cruise Items/Activities | |||||||||||
| Explosive Devices: | no | ||||||||||
| Portable Air Compressors: | no | ||||||||||
| Flammable Gases: | yes | ||||||||||
| Small Boat Operations: | no | ||||||||||
| SCUBA Diving Operations: | no | ||||||||||
Hazardous Material | |||||||||||
| Will hazardous material be utilized? | yes | ||||||||||
| Describe deployment method and quantity: Within the main lab we will have a tank of hydrogen and an acetylene torch. Will also have regular chemicals (acids, solvents, etc) that will be used within the lab spaces. Will bring MSDS sheets and spill kits. | |||||||||||
Radioactive Material | |||||||||||
| Radioiosotopes: | no | ||||||||||
Additional Information | |||||||||||
| Is night time work anticipated on this cruise? | yes | ||||||||||
| Specialized tech support (Seabeam, coring, other): We will be doing CTD operations when Jason is not in the water. | |||||||||||
| Other required equipment and special needs: | |||||||||||
Scientific Instrumentation for HOV Jason |
Site Survey | |
| Will you provide detailed charts of the work area(s)? | yes |
| If no, willl you need R/V Atlantis to generate maps of the work area(s)? | no |
| Will you need post-dive maps of the work area generated? | no |
Navigation | |
| Will you be using Long Base Line (LBL) navigation? | no |
| How many nets? | null |
| How many tansponders? | null |
| Will you be using Ultra-short baseline (USBL) navigation? | no |
| Will you be using Doppler/GPS navigation? | no |
| What type of samples do you expect to collect? | please see attachment |
Elevators | |
| Will you be using elevators to transport samples to the surface? | yes |
| If yes, how many would you anticipate? | Elevators will be used to cycle GasTights and Majors if there is not enough room in the basket. Maximum of ~7 deployments. |
Science Supplied Equipment | |
| Are you supplying equipment to be used on HOV Jason | yes |
| Has this equipment been used on Jason before? | yes |
| Please give a brief description of the equipment, its intended purpose, the cruise # it was last used on if any and its deployment method.
Please see attachment | |
| Does this equipment use an external pressure housing? | yes |
| If yes, what is the pressure rating? | |
| and test pressure? | |
| Has the pressure housing been tested per Alvin Pressure Test requirements? | yes |
| Pressure housing schematic with dimensions and include air and water weights.
»Large_Volume_Sampler_-__Alvin_Pressure_Test.pdf »Lang_Large_Volume_Sampler_Electronics_diagrams.pdf | |
| Does the equipment have an associated computer or control panel for remote operation from the personnel sphere? | no |
| Air weight of this equipment? | |
| Water weight of this equipment? | |
| Does the equipment require data or a power interface from the vehicle? | no |
| Does this equipment require hydraulic inputs from the vehicle? | no |
| Hydraulic schematic of the equipment requirements. | |
| Does this equipment require manipulation? | yes |
| If yes, please describe how the equipment is to be manipulated:
Please see attachment | |
| Will this equipment be deployed off the vehicle? | no |
| If yes, please describe how the equipment is intended for deployment: | |
| If yes, will the equipment be disconnected from the vehicle and left in situ? | no |
| How long will the deployment be? | |
| Will the equipment be recovered by the same vehicle? | no |
| If recovering equipment deployed with another vehicle, provide pressure rating: | |
| and test pressure: | |
| Does this equipment use any glass spheres for either buoyancy or as pressure housings? | no |
Hazardous Material | |
| Will hazardous material be utilized? | no |
| Describe deployment method and quantity: | |
Additional Information | |
| Brief operations description or comments: Jason configuration: Would like to discuss costs/benefits of 2-body vs single-body deployment mode. Is one deployment mode easier to launch in poor weather? Is there a substantial benefit to having downward camera on Medea while in the hydrothermal field? Would like to use the regular science sled and would like to have downward facing camera / light on Jason. Video: Would like to record video 24/7. When doing mosaicking would like to turn off embedding. | |
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: | |