Cruise Planning Questionnaire


Ship: ATLANTIS
    Vehicle(s) required:
ALVIN, AUV
    Name of ship for ROV ops:
SENTRY
    Ch Sci:
David Valentine
    Affiliation:
UC Santa Barbara
    Address:
Deprtment of Earth Science
University of California
Santa Barbara, CA 93106
    Phone:
805-893-2973
    Email:
valentine@geol.ucsb.edu
    POC / contact info:
Departure port & date:9/13/09 San Francisco
    Distance to first station:
~250 nm
    Number of stations:
TBD
    Distance between stations:
Variable
    Total days on station:
TBD
Arrival port & date:9/29/09 San Diego
Op area:Santa Barbara/Monica/Maria Basins
Lat/Lon:
Depth range:60-900
    Will the vessel be operating within 200 NM of a foreign country?
    Which country?
    Are visas or special travel documents required?

Funding agency:
      NSF
Specify:

Grant or contract number: OCE

    Science objectives/activities planned:
SEEPS: Submarine Exploration and Evaluation of Petroleum Seeps (NSF CAREER)

Objective 1: Close the methane budget for gas vents ranging from shallow to deep. Activities in support of this objective include sediment coring (Alvin push cores), gas collection (Alvin - gas collectors sci), water sampling (Alvin - niskins), collection of microbial mats (Alvin slurp), radiotracer rate measurements (Atlantis), and Sediment Geochemistry (Atlantis). Recovery of growth plates for microbial mats (6) and pore water equilibration samplers (2) deployed during the SEEPS 07 cruise will also be conducted. Several vents will be targeted (known and suspected) in the Santa Barbara, Santa Monica and Santa Maria Basins. (Alvin operations). Some exploration will be involved.

Objective 2: Identifying the source of gas forming the mid water methane maximum in the Santa Barbara Basin. Activities in support of this objective include CTD/Rosette sampling, SENTRY operation, radiotracer based rate measurements (Isotope van), concentration and stable isotopic analyses of gases (shipboard by GC and cavity laser spectroscopy), Alvin dives to potential seep targets, and collection of samples for molecular biological analyses.

Objective 3: Further explore the tar mounds discovered during SEEPS 07 to accurately map the features (SENTRY operations) and to collect additional samples for geochemical analysis (Alvin operations). One Alvin dive may target an unexplored mound structure off Point Arguello.

Objective 4: collection of bulk sediment samples for analysis of microbial and viral community structure, especially as related to methane. Cores will be collected from several locations particularly from hydrate-related mound structures in the Santa Monica Basin.

Objective 5: Collect water column samples throughout the Southern California Borderland to assess the activity of methanotrophic microbes, and to test the hypothesis that northern and southern waters have distinctive methanotrophic potentials.

Other Objectives

Objective 6: This cruise is funded through the NSF CAREER program and as such will involve a number of graduate and undergraduate students from UC Santa Barbara as part of the educational component of the award. That is, this is partially a student cruise. All students will be involved in the scientific aspects of the research.
Objective 7: The opportunity to use SENTRY in support of the primary scientific objectives above will also enable other uses of this tool. These includes a high resolution synoptic view of the physical-chemical oceanography of the Santa Barbara and Santa Monica Basin, and photomasaic imaging of sea floor features such as tar mounds, hydrate mounds and gas seeps. An in-situ mass spectrometer, TETHYS, will also be linked to SENTRY in order to perform high resolution chemical profiling.

WHOI shipboard scientific instrumentation desired:
ADCP - 75 KHzOxygen titration apparatus
Fume hood
Refrigerator
Deionized water system
    Gravity corer
CTD/rosette system-70 deg freezer
SalinometerWalk-in cooler (AT only)
10-liter Niskin bottles
Pinger for wire use

Is nighttime work anticipated on this cruise? Yes

    Critical MET sensors:
    Critical CTD sensors:
Conductivity, Temperature, Pressure, Oxygen

Do you need Seabeam? (AT and KN only) Yes

Long baseline (LBL) transponder navigation? Yes No. of xpndrs/nets: one net
Ultra-short baseline (USBL) navigation? Yes
Doppler/GPS navigation? Yes

Will you be using portable science vans? Yes How many: AUV vans plus one Rad Van


Science Van #1
Science Van #2
Science Van #3
    Type/size
Radiation
    Location
Aft Deck Port side
    Water
Fresh, yes
    Power
Yes

Anticipated standard oceanographic cable use:

Instruments(s)
Instrument Weight(s)
Maximum Depth
    Conducting hydro
CTD
2000m
    Steel hydro
Coring?
900m
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
Number of conductors:
    Do you need non-standard wire?
NoIf 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
No
    Equipment handling
No
    Inter/intraship communications
No
    Science stowage
No

If yes to any of the above, please identify:

Will any of the following items be used on board?

    Explosive devices
No
    Portable air compressors
No
    Flammable gases
Yes
    Radioisotopes
Yes
    Isotope van
Yes

Will hazardous material be used aboard, or deployed by an ROV? No

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?
We will follow a standard chemical safety plan. All materials will be removed at the termination of the cruise and either transported back to UCSB or disposed at SIO/UCSD.