Seep larval dispersal

Ship

R/V Atlantis

Vehicles

HOV Alvin

Cruise Party

Shawn Arellano: Principal Investigator
Western Washington University, Shannon Point Marine Center 1900 Shannon Pt. Road Anacortes, WA USA 98221
+1 360 213 2188
Shawn.Arellano@wwu.edu

David Eggleston: Principal Investigator
NC State University 303 College Circle Morehead City, NC US 27695
+1 919 515 7840
eggleston@ncsu.edu

Craig Young: Chief Scientist, Principal Investigator
University of Oregon 63466 Boat Basin Road P.O. BOX 5389 Charleston, OR 97420, OR US 97420
+1 541 888 2581 ext. 299
cmyoung@uoregon.edu

Departure: Morehead City, NC on Nov 2, 2021

Arrival: Gulfport, MS on Nov 21, 2021

Mobilization Date: Oct 30, 2021

Demobilization Date: Nov 22, 2021

Supporting documentation:

Operations Area: Western Atlantic Margin, Florida Keys, Northern and Eastern Gulf of Mexico

Lat/Lon: 88° 0.0′ W

Depth Range: 350 / 3500

Will the vessel be operating within 200 NM of a foreign country? Cuba, Bahamas
Are visas or special travel documents required? no

Science objectives

Determine vertical distribution of deep-sea larvae in the water column at all sites by direct collection.

Estimate dispersal potential and distribution of larvae using isotopic and geochemical methods.

Obtain fall samples of various seep organisms to complete analysis of gametogenesis as a function of species and depths.

Determine if the larvae of methane seep species limited to the Gulf of Mexico can transit around the Florida Peninsula.

Assess the amount of energy exported from methane seeps in the form of gametes to the overlying water column.

Model the dispersal of seep larvae using data on dispersal times, vertical distribution and currents.

Continue biological studies of deep-sea calcareous sponges, epizooic associates of tubeworms and bivalves, and several undescribed species of polychaetes and ophiuroids.

Science Activities

Recover instruments and collectors from 6 long-term larval observatories. As this is the final cruise, none will be redeployed.

Collect methane seep animals for gametogenic studies and genetics.

Collect juvenile seep animals for work on geochemistry and isotope analysis.

CTD collections for water-column bacteria.

Filming in Alvin and on ship.

Night-time MOCNESS collections of larvae at a range of depths.

Sorting, fixation and photography of larval forms.

Pre-cruise planning meeting: Teleconference

Zoom preferred
Media personnel on board: Video
Pending funding, we will have Stephen Low Productions on board filming a large-screen IMAX film, "Born in the Abyss." Have also had queries from BBC Natural History Unit, interested in footage for Blue Planet III

Stations:

Funding Agency: NSF #OCE-1851383

- added NSF #OCE-1851383 on Jul 29, 2021 3:55 AM by
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R/V Atlantis

Shipboard Equipment

A-Frame
Deionized Water System
Science Underway Seawater System
Multibeam
Fume Hood
Crane

Shipboard Communication

Basic Internet access via HiSeasNet

CTD/Water Sampling

911+ Rosette 24-position, 10-liter bottle Rosette with dual T/C sensors
Mocness

Critical CTD Sensors: 

Sample Storage

Climate Controlled Walk-in
Scientific Walk-in Freezer
Scientific Walk-in Refrigerator


Storage Notes: We would like both of the walkins to be refrigerators, one at 4 degrees C and one at 7 degrees C

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:

Winches

CTD Winch with .322" Electro-mechanical wire
Hydro Winch with .25" hydro wire

Winch Notes: appropriate winch for MOCNESS



Wire Notes:

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

Other Science Vans:

Specialized Deck Equipment

Mooring Deployment/Recovery Equipment Required: no	Type:
Cruise Specific Science Winch Required: no	Type:
Nets Required: yes	Type: mocness

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

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other):  mocness and lab work

Other required equipment and special needs: 

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? no

Vehicle Equipment

Bio collection boxes: 12 x 12 x 12
Bio collection boxes: 12 x 12 x 24
CTD
Large capacity slurp samplers: multi-chamber
Niskin bottles (1L bottle rack)
Scoop nets


What type of samples do you expect to collect?
slurp samples in interstices of mussel beds various larger animals, including lots of mussels

Elevators

Will you be using elevators to transport samples to the surface?  yes
If yes, how many would you anticipate?  possibly to deploy and recover larval pumps

Science Supplied Equipment

Are you supplying equipment to be used on HOV Alvin?  no

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.

Does this equipment use an external pressure housing?  no

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?  no

If yes, please describe how the equipment is to be manipulated: 

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

Do you intend to recover any other previously deployed equipment?  yes

If yes, please describe this equipment:  lowell instrument tilt current meter

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? yes

Describe deployment method and quantity:
formaldehyde in larval traps that will be recovered

Additional Information

Brief operations description or comments:

Date Submitted: Aug 3, 2021 1:19 AM