A18-12

Ship

R/V Atlantis

Vehicles

ROV Jason

Cruise Party

Lisa Levin: Chief Scientist, Principal Investigator
9500 Gilman Drive La Jolla, CA USA 92093-0218
+1 858 534 3579
llevin@ucsd.edu

Departure: Astoria on Aug 31, 2011

Arrival: San Francisco on Sep 8, 2011

Mobilization Date: Aug 29, 2011

Demobilization Date: Sep 10, 2011

Supporting documentation:

»AT18_12.CruiseSynopsis.doc
»Pre.docx

Operations Area: Hydrate Ridge North

Lat/Lon: 44° 40.17′ N / 125° 5.89′ W

Depth Range: 500 / 1000

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

Science objectives

The primary objectives of this research are to

(a) characterize the biotic diversity of authigenic, methane-derived carbonates at Hydrate Ridge seeps, from microbes to metazoans, (b) identify the ecosystem-scale interactions among these groups including habitat alteration, colonization, trophic transfer,

(c) assess how proximity to methane seepage influences (a) and (b), define successional dynamics of carbonate ecosystems,

(d) determine the evolutionary affinities of carbonate faunas and (e) refine our understanding of one of the most important paleoceanographic indicators,

C. wuellerstorfi.  Community components to be studied include associated megafauna, attached epifauna, endofauna

(i.e. cryptofauna), and endolithofauna, as well as the biogeochemistry of carbonate environments experienced by these organisms.  

This cruise is the final trip in the project and is focused on recovery of experiments placed at Hydrate Ridge North and South in August 2010.

Science Activities

(1) Experiment Recovery:

(1A) Recover experimental substrates deployed at several locations representing active and inactive seep sites on Hydrate Ridge North and South (500-900 m)

These include rocks, wood, bone, and chips, and slides placed with markers. Each item must be placed in a separate compartment. There are approximately

 Units 50 to recover.

(1B) Recover transplanted carbonate rocks that were moved from active to inactive areas or vice versa in 2010. Each item must be placed in a separate compartment.

There are approximately 16 units to recover.

(1C) Recover snail grazing experiments (rocks in cages with and without snails). Each item must be placed in a separate compartment.

There are approximately 8 units to recover.

(1D) Recover foraminifera microcosms in cages. Each item must be placed in a separate compartment.

There are approximately  20 units to recover.

 

(2) Sample rocks and biota adjacent to experimental substrates via manipulator, cold boxes, slurps, scoops.

(3) Collect tube cores of bacterial mat, clam bed and other sediments

(4) Generate CTD profiles, collect water from immediately over the seep

(5) Examine OMZ waters (via CTD) and both OMZ and near seep sediments (via multicorer)  as alternative ops if weather fails

(6) Generate multibeam maps for use in ROV dive and elevator placement

Pre-cruise planning meeting: Teleconference

Media personnel on board: Video
an NSF funded Film crew on board a. Mike wants to talk lights and camera, he has one dive, to a site of our mutual choosing. My hope is to share two dives. b. Perhaps a German crew (of one) as well on board

Stations:

  Hydrate Ridge South
  Distance: null
  Days: null
  Latitude: 44° 34.1’ N
  Longitude: 125° 9.0’ W

Funding Agency: NSF #0826254

- added NSF #0826254 on Feb 23, 2011 4:23 PM by Betsey Doherty

R/V Atlantis

Shipboard Equipment

Bathymetry System 12 kHz
Bathymetry System 3.5 kHz
Deionized Water System
Science Underway Seawater System
12 kHz Pinger for Wire Use
Multibeam
Fume Hood

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: 

Sediment Sampling

Multi-core

Sample Storage

Climate Controlled Walk-in
Scientific Walk-in Freezer


Storage Notes: Need a refrigerator in each of the three main labs.
< 5 gal day milli-Q

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

USBL

Navigation Notes: LBL - Uncertain if Jason requires this.
USBL - Yes if Jason uses this.
nets ? up to two
transponders ?

Winches

CTD Winch with .322" Electro-mechanical wire
Trawl Winch with 9/16th trawl wire

Winch Notes:



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: 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: yes	Identify: samples stowed until San Diego arrival
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:
Preservatives.  No chem use outside of labs. Gas cylinders general lab chems.

Radioactive Material

Radioiosotopes: no

Additional Information

Is night time work anticipated on this cruise? yes

Specialized tech support (Seabeam, coring, other): 

Multi beam. CTD, Multicoring only as bad weather backup.

 

Other required equipment and special needs:  THREE GEAR ELEVATORS REQUIRED FOR ROUND THE CLOCK JASON OPS.
Do not need multi core tech.
Request spare tubes for multi core. 

ROV Jason

Site Survey

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


If no, willl you need Jason 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? yes

Will you be using Doppler/GPS navigation? no

Sensors & Samplers

Major water sampler(s)
Push corers
Scoop nets
What type of samples do you expect to collect?
Push corers (12-pack rack) - more? Low temperature probe. CTD MOUNTED ON JASON Major water sampler(s), JASON-MOUNTED NISKIN BOTTLES (2L). Small capacity slurp samplers Bio collection boxes: 12 x 12 x 12 3 elevators, 12-18 deployments over 6 days

Elevators

Will you be using elevators to transport samples to the surface?  yes

If yes, how many would you anticipate?  0

Cameras & Video

Video & Photo data

Science Supplied Equipment

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

Has this equipment been used on Jason 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.
bioboxes-
colonization experiments (carbonate, wood, chips, bones) to be recovered in insulated bioboxes.



Does this equipment use an external pressure housing?  no

If yes, what is the pressure rating? 
and test pressure? 

Or has the pressure case been tested per Alvin Pressure Test requirements?  no

Housing schematic with dimensions and include air and water weights.

Does the equipment have an associated computer or control panel for remote operation from the personnel sphere?  no

Air weight of this equipment?  heavy

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.
Lids must be open and latched (with bungi) by manipulator.

Will this equipment be deployed off the vehicle?  yes

If yes, please describe how the equipment is intended for deployment.
also deployed 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?  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

Additional Information

Brief operations description or comments:
Do you intend to recover any other previously deployed equipment? Yes
If yes, please describe this equipment:  experimental substrates (rocks, bone, wood, chips), cages, foram microcosms, snail experiments

Equipment to be loaded in San Diego in June –awaiting permission.

All equipment will be offloaded in San Diego in October – awaiting permission
Date Submitted: Feb 24, 2011 10:16 AM by Eric Benway