Hydrate Ridge Carbonates

Ship

R/V Atlantis

Vehicles

HOV Alvin

Cruise Party

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

Departure: Astoria on Jul 31, 2010

Arrival: San Diego on Aug 12, 2010

Supporting documentation:

»CruisePlan_HydrateRidge_2010-1.doc

Operations Area: Hydrate Ridge 44deg 40.17N, 125deg 5.89W

Lat/Lon: 44° 40.17′ N / 125° 5.89′ W

Depth Range: 550 / 1000

Will the vessel be operating within 200 NM of a foreign country? USA
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 Costa Rica 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. 

Science Activities

(1A) Survey and map carbonate habitats at several locations with active and inactive seep sites on Hydrate Ridge (500-900 m)
(1B) Recover carbonate rocks and associated faunas from the survey areas.  Sample via manipulator, cold boxes, slurps, scoops.
(2) Collect tube cores of bacterial mat, clam bed and other sediments
(3) Place colonization experiments (carbonate, wood, chips, bones) for recovery in 2011
(4) Transplant carbonates to and from areas of active seepage
(5) Generate CTD profiles, collect water from immediately over the seep
(6) Examine OMZ waters (via CTD) and both OMZ and near seep sediments (via multicorer)  during night ops
(7) Generate multibeam maps for use in dive and elevator placement

CO PIS: Rathburn, Orphan, Rouse

Dive 1 -4 Hydrate Ridge North, 590 m  44 ^O 40.17’N, 125 ^O 5.89’W

Additional Site 612 m,  44 40.03N  125 06.26W

Dive 5 Hydrate Ridge South 770 m , 44  34.22 N 125   8.85 W

Dive 6 Hydrate Ridge East 905 m , 44 34.36N 125 00.04W

Dive 7-8 Hydrate Ridge North 590 m  44 ^O 40.17’N, 125 ^O 5.89’W

 

Pre-cruise planning meeting: Teleconference

Pre cruise meeting was 2/18.

Stations:

  Station 1
  Distance: 60 nm?
  Days: null
  Latitude: 44° 40.17’ N
  Longitude: 125° 5.89’ W

Funding Agency: NSF #0826254

- added NSF #0826254 on Jun 21, 2010 4:49 PM by
<Could not load the preview of Funding data >

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: Needs 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? yes

Winches

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

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: 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:
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? no

Specialized tech support (Seabeam, coring, other):  Multi beam. CTD, Multi care (1 per night, +/- 12 total).

Other required equipment and special needs:  Dark room for x-ray work. Collecting information on x-ray equipment.
PI requested running water for Dark room.
Do not need multi core tech.
Request spare tubes for multi core

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? yes

Vehicle Equipment

Bio collection boxes: 12 x 12 x 12
Push corers (12-pack rack)
Scoop nets
Small capacity slurp samplers
CTD
High temperature probe (0-480°C)
Low temperature probe
Major (dual) pair water sampler(s) with ICL temperature probles


What type of samples do you expect to collect?
PI will also bring own bio boxes. PI has requested an additional camera for the sphere, Bruce suggested Lisa bring a camera and have it tested. Tube cores 8-12 per dive will be processed at sea. PI requests homer probes for deployments. Sonar: will have a forward sonar and a reson. Still testing system to have processed data available at end of cruise.

Elevators

Will you be using elevators to transport samples to the surface?  yes
If yes, how many would you anticipate?  6

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.
colonization experiments (carbonate, wood, chips, bones)

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?  12  Months

Will the equipment be recovered by the same vehicle?  no

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:
Equipment loaded in San Fran.
All equipment will be offloaded in San Diego.
Date Submitted: Jun 21, 2010 4:51 PM