Woods Hole Oceanographic Institution
Cruise Planning Synopsis
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AT40-02: Mantle Volatiles | |
Ship | |
| R/V Atlantis | |
Vehicles | |
| AUV Sentry, HOV Alvin | |
Cruise Party | |
| Joshua Curtice: Principal Investigator Organization Name USA +1 508 289 2618 jcurtice@whoi.edu Daniel Fornari: Principal Investigator Woods Hole Oceanographic Institution Clark South 172B, MS#24 Woods Hole, Ma. USA 02543 +1 508 289 2857 dfornari@whoi.edu Mark Kurz: Principal Investigator, Chief Scientist Woods Hole Oceanographic Institution Clark 421B, MS#25 Woods Hole, Ma. USA 02543 +1 508 289 2888 mkurz@whoi.edu Eric Mittelstaedt: Principal Investigator, Chief Scientist University of Idaho 875 Perimeter Dr. MS 3022 Moscow, Idaho USA 83844 +1 208 885 2045 emittelstaedt@uidaho.edu Adam Soule: Principal Investigator Organization Name USA +1 508 289 3213 ssoule@whoi.edu Dorsey Wanless: Principal Investigator Organization Name USA +1 508 289 3922 dwanless@whoi.edu |
Departure: May 11, 2018 | |
| St. Georges, Bermuda | |
Arrival: Jun 10, 2018 | |
| St. Georges, Bermuda | |
Operations Area | |
| 13-15N Mid-Atlantic Ridge at 45W long | |
| Lat/Lon: 14° 0.0′ N / 45° 0.0′ W | |
| Depth Range: 4500 / max (m) | |
| Will the vessel be operating within 200 NM of a foreign country? | n/a |
| Are visas or special travel documents required? | no |
Science Objectives | |
The primary objective of this proposal is to collect a suite of glassy volcanic rocks from the Mid Atlantic Ridge, measure the full suite of volatiles, major elements, trace elements, and isotopes, and evaluate their geochemical variability with respect to their geological setting. An ROV or submersible is required for this project because the seafloor eruption style will be critical in relating the samples to local and regional tectonics. The field work for this project began with Atlantis/Alvin/Sentry cruise AT33-03 in 2016, which was cut short (due to oil leaks in both z-drives) after only 30% of the work was completed (9 days out of 27). This cruise will involve 19 days on station between 13°30’ and 14°05’N on the Mid-Atlantic Ridge. The use of Alvin will allow us to collect well located samples and to determine if vesicularity and volatile abundances relate to their geologic setting and at what scale (i.e. segment wide, 'tectonic' vs. 'magmatic', adjacent to detachment faults, etc.). This will include sampling on the segment scale (e.g., magmatic segment center and detachment faulted terrain), and the local scale related to seamounts/source vents, lava flow size and origin, and proximity to detachment faults. The use of Alvin will also allow controlled sampling of glassy samples, not just with respect to geologic setting, but to ensure preservation of the volatiles. Selected glassy samples will be collected in anaerobic sea-floor samplers that retain (some) sea floor pressure and temperature, thus minimize air contamination (Kurz and Curtice, 2009), reducing the reliance on post-analysis corrections. These vessels will also permit collection of any gas exsolved at the surface because the samples can be kept immersed, allowing them to warm slowly (exsolved gases will then be collected in copper tubes). This will reduce the uncertainties associated with estimates of “pre-degassing” volatile contents. In addition to existing sonar data, we will use AUV Sentry make local high-resolution bathymetry and sonar maps north of 13 ÂÂÂÂÂÂ50 (i.e., the magmatic segment) to define the geologic context of those samples. | |
Science Activities | |
| Alvin diving- includes observations, imaging (video and still imaging), mapping, rock sampling, push cores, possible small Niskin water sampling, and Ti-major samplers for possible use if hydrothermal vents are encountered Sentry AUV diving, mostly night time operations, but possibly longer with wave-glider navigation shipboard multibeam surveys possible dredging as a contingency possible gravity coring possible CTD as a contingency (to be ready to use but stored on 01 deck) rock processing in main lab rock sawing in wet lab We will use compressed gases (nitrogen) and liquid nitrogen | |
Additional Info | |
| Pre-cruise Planning Meeting: Teleconference/Visit WHOI | |
| Meeting Notes: CoPIs from WHOI, Boise State and U. of Idaho | |
| Media personnel on board: Video, Writer | |
| possible outreach, TBD | |
Stations: | |
| Station 1 Distance: 1576 Days: 19 Latitude: 13° 46.6’ N Longitude: 45° 1.25’ W Station 2 Distance: 1576 Days: 19 Latitude: 13° 46.6’ N Longitude: 45° 1.25’ W | |
Supporting documentation: | |
Funding |
| Funding Agency: NSF | |
| Grant or contract number: 1259218 |
Scientific Instrumentation for R/V Atlantis |
Shipboard Equipment | |||||||||||
| 12 kHz Pinger for Wire Use | |||||||||||
| ADCP 75 kHz | |||||||||||
| Bathymetry System 12 kHz | |||||||||||
| Bathymetry System 3.5 kHz | |||||||||||
| Deionized Water System | |||||||||||
| Fume Hood | |||||||||||
Gravimeter  | |||||||||||
| Multibeam | |||||||||||
| Navigation - Heading | |||||||||||
| Navigation - Position | |||||||||||
| Relay Transponder for Wire Use | |||||||||||
| Sippican XBT System (Mark 21) | |||||||||||
| Towed Magnetometer | |||||||||||
| Transponder Navigation - Sonardyne USBL | |||||||||||
Shipboard Communication | |||||||||||
| Basic Internet access via HiSeasNet | |||||||||||
| Is there a need to transfer data to shore on a regular basis? | |||||||||||
| Is there an expectation to use Skype or any other real-time video conference program? | |||||||||||
| Is there a need to receive data from shore on a regular basis? | |||||||||||
CTD/Water Sampling | |||||||||||
| 911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors | |||||||||||
| Seapoint STM turbidity sensor | |||||||||||
Critical CTD Sensors | |||||||||||
| Note: 2 pingers required | |||||||||||
Sediment Sampling | |||||||||||
| Rock dredges | |||||||||||
| Gravity corers | |||||||||||
Sample Storage | |||||||||||
| Freezer -70°C 25 cu. ft. | |||||||||||
| Freezer -70°C 3.2 cu. ft. ea. | |||||||||||
| Refrigerator 8.6 cu. ft. | |||||||||||
| Storage Notes: -70C freezers for possible biological collections | |||||||||||
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 | |||||||||||
| USBL | |||||||||||
| Navigation Notes:
Alvin and Sentry require USBL, also for elevators and dredging operations. USBL system on Atlantis needs to be calibrated and serviced before the cruise, with CASSIUS survey completed during engineering dives | |||||||||||
Winches | |||||||||||
| CTD Winch with .322" Electro-mechanical wire | |||||||||||
| Hydro Winch with .25" hydro wire | |||||||||||
| Trawl Winch with 9/16th trawl wire | |||||||||||
| Winch Notes:
Fibre optic cable for Alvin Observation Vehicle Slip ring requested for CTD/Fibre Optic cable Traction winch required | |||||||||||
Wire use and application | |||||||||||
| CTD Winch with .322" Electro-mechanical wire | |||||||||||
| Trawl Winch with 9/16th trawl wire | |||||||||||
| Winch Notes:
Fibre optic cable for Alvin Observation Vehicle Slip ring requested for CTD/Fibre Optic cable Traction winch required | |||||||||||
Standard Oceanographic Cables | |||||||||||
| |||||||||||
| Science Van 1 | |||
| Type/size: Sentry vehicle Van | Location: 01 deck | ||
| Water: no | Power:no | ||
| Science Van 2 | |||
| Type/size: Sentry Tool Van | Location: Main Deck port side | ||
| Water: no | Power: | ||
Specialized Deck Equipment
| Mooring Deployment/Recovery Equipment Required: no | Type: |
| Cruise Specific Science Winch Required: no | Type: |
| Nets Required: no | Type: |
Over the Side Equipment
Special Requirements
| Elecrical Power: yes | Identify for Sentry |
| Equipment Handling: yes | Identify: for Sentry |
| Inter/intraship Communications: no | Identify: |
| Science Stowage: yes | Identify: rocks and gear R/T WHOI back to WHOI |
| Water: no | Identify: |
Additional Cruise Items/Activities
Hazardous Material
Sentry Li battery- ask Sentry group
solvents - ethanol
gases in tanks - N2, CO2, liquid N2 (tanks r/t -loaded at WHOI and back to WHOI, or Bermuda)
Radioactive Material
Additional Information
Sentry AUV ops and possibly dredging
Scientific Instrumentation for HOV Alvin |
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? | 0 |
| How many tansponders? | 0 |
| Will you be using Ultra-short baseline (USBL) navigation for other than Alvin operations? | yes |
Vehicle Equipment | |
| Push corers (12-pack rack) | |
| Search sonar | |
| Scoop nets | |
| CTD | |
| Small capacity slurp samplers | |
| Large capacity slurp samplers: single-chamber | |
| Bio collection boxes: 12 x 12 x 12 | |
| Bio collection boxes: 12 x 12 x 24 | |
| Rock collection baskets: additional wire basket | |
| Rock collection baskets: 12" x 18" x 12" milk crates | |
| Rock collection baskets: 12" x 12" x 12" milk crates | |
Elevators | |
| Will you be using elevators to transport samples to the surface? | yes |
| If yes, how many would you anticipate? | One to three elevator deployments for imagery and large volume rock collections |
Science Supplied Equipment | |
| Are you supplying equipment to be used on HOV Alvin | yes |
| Has this equipment been used on Alvin 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.
MISO digital still camera MISO GoPro camera anerobic rock samplers (Kurz) made from PVC, used previously on AT33-03 | |
| Does this equipment use an external pressure housing? | yes |
| Has the pressure housing been tested per Alvin Pressure Test requirements? | yes |
| Pressure housing schematic with dimensions and include air and water weights. | |
| Air weight of this equipment? | will provide |
| Water weight of this equipment? | will provide |
| Does the equipment require a power interface from Alvin? | yes |
| Voltage required | 24 Volts DC |
| Power required | DC power (wattage to be supplied) |
| Data Interface | null|
| Does the equipment meet the electrical requirements of the Alvin User Manual? | yes |
| Please provide power and comms specifics, wiring diagram, pinout, and wiring harness in advance of the cruise. | |
| 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:
anaerobic rock samplers require manipulation, cameras do not | |
| Will this equipment be deployed off the vehicle? | yes |
| If yes, please describe how the equipment is intended for deployment:
GoPro camera perhaps on elevator | |
| 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? | yes |
| Do you intend to recover any other previously deployed equipment? | no |
| If yes, please describe this equipment: | |
| Does this equipment use any glass spheres for either buoyancy or as pressure housings? | no |
| Does the equipment have an associated computer or control panel for remote operation from the personnel sphere? | no |
| Has the computer or control panel been gas tested for use in the personnel sphere? | no |
Hazardous Material | |
| Will hazardous material be utilized? | no |
| Describe deployment method and quantity: | |
Additional Information | |
| Brief operations description or comments: Highest priority for Alvin operations: rock sample collection, video and still photo imagery, sediment collection using push cores | |
| Navy Clearance: Granted 05/08/2018: WITHIN 60 NM RADIUS OF 13-46N 045-00W DURING PERIOD 110000P MAY THRU 102400P JUN 18 | |
Scientific Instrumentation for AUV Sentry |
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)? | yes |
| Will you need post-dive maps of the work area generated? | yes |
Navigation | |
| Will you be using Long Base Line (LBL) navigation? | no |
| How many nets? | 0 |
| How many tansponders? | 0 |
| Will you be using Ultra-short baseline (USBL) navigation? | yes |
| Will you be using Doppler/GPS navigation? | yes |
Science Supplied Equipment | |
| Are you supplying equipment to be used on HOV AbeSentry | no |
| Has this equipment been used on AbeSentry before? | no |
| Please give a brief description of the equipment, its intended purpose, the cruise # it was last used on if any and its deployment method. | |
| Does this equipment use an external pressure housing? | no |
| Has the pressure case been tested to the anticipated depth of deployment?& | no |
| Pressure housing schematic with dimensions and include air and water weights. | |
| Air weight of this equipment? | |
| Water weight of this equipment? | |
| Does the equipment require data or a power interface from the vehicle? | no |
| Does the equipment meet the electrical requirements of the Sentry User Manual? | no |
Cameras & Video | |
| Digital Still Camera: Color | |
Additional Information | |
| Brief operations description or comments: We intend to use the USBL wave-glider navigation system for Sentry to allow greater distance between Atlantis and Sentry. | |
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: | |