The Next 'Kurz 14N Mid-Atlantis Ridge'

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: St. Georges, Bermuda on May 11, 2018

Arrival: St. Georges, Bermuda on Jun 10, 2018

Mobilization Date: May 10, 2018

Demobilization Date: Jun 11, 2018

Supporting documentation:

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 š50 (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

Pre-cruise planning meeting: Teleconference/Visit WHOI

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

Funding Agency: NSF #1259218

- added NSF #1259218 on Dec 18, 2017 12:59 PM by
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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

Will you be using Ultra-short baseline (USBL) navigation for other than Alvin operations? 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


Wire Notes: Fibre optic cable for Alvin Observation Vehicle
Slip ring requested for CTD/Fibre Optic cable
Traction winch required

Slip ring required? no	Number of conductors:
Non-standard wire required? no	Type:
Traction winch required? no	Describe:

Other Science Vans:

Other Science Vans:

Science Van 1
Type/size: Sentry Tool Van		Location: Main Deck port side
Water: no		Power:
Science Van 2
Type/size: Sentry vehicle Van		Location: 01 deck
Water: no		Power:no

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

Will you be bringing any equipment (winches, blocks, etc.) that lowers instruments over the side? no

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

Explosive Devices: no Portable Air Compressors: no Flammable Gases: no

Small Boat Operations: no SCUBA Diving Operations: no

Hazardous Material

Will hazardous material be utilized? yes

Describe deployment method and quantity:
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

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other):  Sentry AUV ops and possibly dredging

Other required equipment and special needs: 

AUV Sentry

Site Survey

Will you provide detailed charts of the work area(s)?  yes
Current Chart(s):


If no, will you need Sentry 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

Will you be using Ultra-short baseline (USBL) navigation? yes

Will you be using Doppler/GPS navigation? yes

Sensors & Samplers

410/120kHz Sidescan sonar
850 kHz Sidescan sonor
CTD
Magnetometer
Multibeam maps
Optical back scatter
Sub bottom profiler
What type of samples do you expect to collect?
Highest priority is high resolution Multibeam bathymetry

Science Supplied Equipment

Are you supplying equipment to be used with AUV Sentry?  no

Has this equipment been used on Sentry 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

Air weight(s) of this equipment?

Water weight(s) 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: Highest priority Sentry data is multibeam bathymetry

HOV Alvin

Site Survey

Will you provide detailed charts of the work area(s)?  yes
Current Chart(s):


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

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


What type of samples do you expect to collect?
lava and sediment, possible biology and possible vent fluids

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

Air weight of this equipment? will provide

Water weight(s) 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

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 Alvin?  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, ceramic housings or similar (non-metallic materials) for either buoyancy or as pressure housings?  no

Do you require any electronic equipment in the personal 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

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
Date Submitted: Dec 20, 2017 1:46 PM