Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Andreas Teske
University of North Carolina at Chapel Hill
Dept of Marine Sciences,
340 Chapman Hall, CB 3300
27599 Chapel Hill
    POC / contact info:
Departure port & date:Guaymas, Nov 22
    Distance to first station:
ca. 100 miles
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:Guaymas, Dec 6
Op area:NP 13
Lat/Lon:27N00.30 to 27N00.60 and 111W24.65 to 111W24.35
Depth range:2000
    Will the vessel be operating within 200 NM of a foreign country?
    Which country?
    Are visas or special travel documents required?

Funding agency:

Grant or contract number: 0647633

    Science objectives/activities planned:
Our Science objectives focus on A) how the supply of geothermally derived substrates determines the composition, spatial zonation, and in-situ metabolic rates of the active microbial community, and B) how diverse cultured and uncultured microorganisms participate in carbon assimilation and transformation pathways. In the Guaymas Basin sediments, physiologically distinct microbial communities channel the geothermally produced substrates in hydrothermal fluid that permeates the sediments through a double “microbial gauntlet” of anaerobic metabolism and chemolithoautotrophic C fixation.
For combined geochemical/microbiological analysis, we are planning extensive push core sampling of hydrothermally and micreobially active sediments; Beggiatoa mat sampling using push cores and slurp guns, and also some bottom water sampling adjacent to microbially active sediments and microbial mats. Prior to sediment coring, benthic processes and microgradients within the sediments will be determined with redox-profiler modules, benthic respirometry chambers, and in-situ sulfate-reduction injectors and incubators. In-situ temperature gradients will be measured by Alvin thermoprobe and newly build UNC temperature loggers, to identify sediments with steep temperature (and, by inference, geochemical and microbiological) gradients. These sediments will be preferentially chosen for our work. As a working hypothesis, Beggiatoa mats may to some extent represent visual proxies for geochemically and microbiologically active sediments.

WHOI shipboard scientific instrumentation desired:
    12 kHz bathymetry system
Fume hood
    Relay transponder for wire use
    Piston corer
Deionized water system
CTD/rosette system-70 deg freezer
    Box corer
Walk-in cooler (AT only)
10-liter Niskin bottles
Pinger for wire use

Is nighttime work anticipated on this cruise? No

    Critical MET sensors:
    Critical CTD sensors:
Temperature, salinity, density, oxygen, fluorescence, transmission

Do you need Seabeam? (AT and KN only) No

Long baseline (LBL) transponder navigation? Yes No. of xpndrs/nets: 3 0r 4
Ultra-short baseline (USBL) navigation? No
Doppler/GPS navigation? No

Will you be using portable science vans? Yes How many: 1

Science Van #1
Science Van #2
Science Van #3
Radioisotope van

Anticipated standard oceanographic cable use:

Instrument Weight(s)
Maximum Depth
    Conducting hydro
    Steel hydro
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
Number of conductors:
    Do you need non-standard wire?
If so, what type?
    Do you need a traction winch?
Will you be bringing any equipment (winches, blocks, etc.) that lowers equipment over the side? No

If yes, please provide details:
Will there be special requirements for:

    Electrical power
    Equipment handling
    Inter/intraship communications
    Science stowage

If yes to any of the above, please identify: Some European lab gear might require 220V, but everything worked well the last time

Will any of the following items be used on board?

    Explosive devices
    Portable air compressors
    Flammable gases
    Isotope van

Will hazardous material be used aboard, or deployed by an ROV? Yes

What measures or plans have been made a) in the event of a spill, and b) for the removal and/or disposal of these materials at the completion of the cruise?
Hazardous material will be accompanied by the respective spill kit.
We plan to take chemicals, waste and gases off the ship at the next port. The German container (which includes the hazardous waste and radioisotopes) is offloaded in Manzanillo, Dec 12-15.