hot2coldVents18

Ship

R/V Atlantis

Vehicles

HOV Alvin

Cruise Party

Jason Sylvan: Chief Scientist, Principal Investigator
Texas A&M University Dep't of Oceanography, Eller O&M Bldg, Rm 1204 College Station, TX USA 77843-3146
+1 979 845 5105
jasonsylvan@tamu.edu

Departure: San Francisco on Mar 26, 2019

Arrival: San Diego on Apr 24, 2019

Mobilization Date: Dec 24, 2018

Demobilization Date: Dec 25, 2018

Supporting documentation:

Operations Area: East Pacific Rise

Lat/Lon: 9° 50.0′ N / 104° 17.0′ W

Depth Range: 2000 / 2600

Will the vessel be operating within 200 NM of a foreign country? don't think so
Are visas or special travel documents required? no

Science objectives

the objectives are to study the transition in mineralogy and microbiology as active hydrothermal sulfides transition to inactive.  we will do this through a combination of collecting active vents and allowing them to be exposed on the seafloor, away from venting, and then collecting those samples a week later (this cruise) and a month later (next cruise in 2020) as well as collecting already inactive sulfides and placing down pre-sterilized samples from archive collections for settling

Science Activities

12 Alvin dives are planned.  we will be collecting active and inactive vent sulfides, splitting the active samples on the seafloor into thirds to be distributed in bioboxes and seafloor exposure chambers, leaving the exposure chambers behind and collecting them later, collecting Major samples of hot fluids and possibly diffuse fluids, using the niskin on Alvin to cllect rising hydrothermal plume samples, and doing CTD ops at night

Pre-cruise planning meeting: Teleconference

visit if necessary but schedule may not permit. Meg Tivey is co-PI and can help locally as needed
Media personnel on board: Video, Writer
BBC will be onboard for interactions during first leg of cruise. i will also be bringing an outreach specialist, Rebecca Fowler (http://www.rebeccafowler.org/) and possibly a photographer

Stations:

  EPR 9 50'N
  Distance: 2140
  Days: 12
  Latitude: 9° 50.0’ N
  Longitude: 104° 17.0’ W

Funding Agency: NSF #1756339, 1756419, 1756558

- added NSF #1756339, 1756419, 1756558 on Dec 21, 2018 9:51 AM by
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R/V Atlantis

Shipboard Equipment

Bathymetry System 3.5 kHz
Deionized Water System
12 kHz Pinger for Wire Use
Navigation - Heading
Multibeam
Fume Hood
Navigation - Position
Crane

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
Biospherical underwater PAR (1000m depth limit) with reference Surface PAR
SBE43 oxygen sensor
Seapoint STM turbidity sensor
Wet Labs C*Star transmissometer (660nm wavelength)
Wet Labs ECO-AFL fluorometer

Critical CTD Sensors: 

Sample Storage

Climate Controlled Walk-in
Freezer -70°C 25 cu. ft.
Refrigerator 8.6 cu. ft.
Scientific Walk-in Freezer
Scientific Walk-in Refrigerator


Storage Notes: will need refrigerated walk-in, -70C freezer (as much space as possible), -20C freezer, and likely a refrigerator.  potentially the walk-in can serve as a refrigerator, but would be best to have walk-in refigerator AND a standard, kitchen-sized unit in the lab

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 Notes: not sure what to write here, we need whatever is necessary for getting to the sites and using Alvin


Winch Notes: nothing in addition to what is needed to deploy CTDs and use Alvin



Wire Notes: potentially bringing a transmissometer for CTD work to detect the plume, but this is not confirmed yet

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

Portable Vans

Isotope Van

Other Science Vans:

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: no	Identify:
Equipment Handling: no	Identify:
Inter/intraship Communications: no	Identify:
Science Stowage: no	Identify:
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:
in progress, but primarily formaldehyde for fixing samples, ethanol for cleaning equipment and acids for chemistry and/or cleaning equipment.  MSDS's will be supplied.

Radioactive Material

Radioiosotopes: yes

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other):  night time CTD deployments will be conducted

Other required equipment and special needs:  we will be ordering 3-4 canisters of N2 gas for onboard use

HOV Alvin

Site Survey

Will you provide detailed charts of the work area(s)?  no
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? no

Vehicle Equipment

Bio collection boxes: 12 x 12 x 12
Bio collection boxes: 12 x 12 x 24
CTD
Heat flow probe
Large capacity slurp samplers: multi-chamber
Niskin bottles (1L bottle rack)
Niskin bottles (2L bottle)
Rock collection baskets: 12" x 12" x 12" milk crates
Rock collection baskets: 12" x 18" x 12" milk crates
Slurp pump: 5-chamber high flow
Slurp pump: single chamber 'pelagic' medium flow
Special micro-bio box 12" x 18" x 12"


What type of samples do you expect to collect?
mostly sulfide rocks. but also major samples, and low-temperature diffuse fluids at Davidson Seamount for microbio/chemistry. possibly low-temp fluids for chemistry at EPR, not microbio. niskins for background sampling and rising plume samples, a few meters above the orifice of the vent

Elevators

Will you be using elevators to transport samples to the surface?  no
If yes, how many would you anticipate? 

Science Supplied Equipment

Are you supplying equipment to be used on HOV Alvin?  yes

Has this equipment been used on Alvin 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.
yes/no - will supply one oxygen probe from Geoff Wheat (U. Alaska/MBARI) that has been used by Alvin before, and a set of exposure containers/sample holders that we are constructing specifically for this cruise.  the exposure containers will have no electronics.  the O2 meter will have external pressure housing and will be tested prior to use.  not sure of the weights at this point but will ask about the probe, as well as voltage needed, etc.

Does this equipment use an external pressure housing?  yes

Has the pressure housing been tested per Alvin Pressure Test requirements?  no

Air weight of this equipment?

Water weight(s) of this equipment?

Does the equipment require a power interface from Alvin?  no

Voltage required

Power required

Data Interface

Does the equipment meet the electrical requirements of the Alvin User Manual?  no

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:  O2 sensor will be placed in venting fluids and held there until a reading is made.  the exposure containers/samplers will be placed on the seafloor and samples moved about in and out of them.  all manipulations will be with the manipulator arms.

Will this equipment be deployed off the vehicle?  yes

If yes, please describe how the equipment is intended for deployment:  O2 meter as described above.  for the exposure chambers, samples will first be placed in them, then the chambers will be left behind on the seafloor.  we will recover them later at the end of the cruise.  we are currently designing and constructing these units, but they will likely have some cover placed on them for retrieval.

If yes, will the equipment be disconnected from the vehicle and left in situ?  yes

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?  yes

If yes, please describe this equipment:  current meter, high temperature logger, thermal blanket and microbial growth chambers may be recovered, as time allows.  all of these were left out during cruise AT42-06 in December.  do not have specs but will ask for them.  Dan Fornari likely has specs for the current meter, temp logger and thermal blankets.  not sure if they use any glass spheres, ceramic housings or similar.

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:

Date Submitted: Dec 21, 2018 10:40 AM