Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
James P. Cowen
University of Hawaii
Department of Oceanography
University of Hawaii
1000 Pope Road
Honolulu, HI 96822
    POC / contact info:
Departure port & date:July 8, 1998
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:July 26, 1998
Op area:NP 9
Lat/Lon:~ 47 deg N, 128 deg W
Depth range:1400 to 2700 m
    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: OCE-9714286

    Science objectives/activities planned:
The dive series is primarily in support of a LExEn project that seeks to evaluate the export of products of microbial activity within the seafloor crust near mid-ocean spreading centers. We are interested in both quantitative flux measurements of particulate and dissolved organic proxies of microbial activity as well as what these fluxes can tell us about the nature and magnitude of the subseafloor microbial communities. This project emphasizes the development of particle and dissolved organic carbon scavenging columns and bases designed to focus diffuse flow, exiting from the seafloor, through a 'filter cartridge-organic scavenging resin-thermisters-flow meter' assembly. These scavenging columns will be deployed using ALVIN for periods ranging from hours to days to one year. In addition water will be collected from all sites for various inorganic, organic and microbiological analyses. We will also carry out various geophysical studies including gravity and magnetometer measurements in part intended to
evaluate such things as porosity which have critical relationship to fluid/rock ratios and potential crustal fluid velocities.
The primary goal of our LExEn project is to test the hypothesis that there is a substantial microbial bio-sphere within the oceanic crust. A critical component of this study is to learn how this biosphere varies under different crustal-geothermal regimes, and how the organic-carbon evidence of the subsurface microbial activity is manifested at sites of widely different crustal age and sediment cover. Consequently, we will be diving at the following sites: ODP Hole 1026B and Baby Bare (crustal fluids escaping from 3 My old crust capped by thick sediment cover); Endeavour axis (young crust but with complex hydrothermal plumbing system in which fluids and entrained organics and other constituents could be derived from a variety of sources and environments; Axial Volcano (zero age crust, unsedimented).

A secondary objective at Axial is to document the recent eruption thought to have occurred as a result of the January-February 1998 seismic event recorded at Axial by the T-Phase Monitoring Program (SOSUS). Fluid and rock samples will be sought, as well as deployment of our LExEn scavenging columns.

WHOI shipboard scientific instrumentation desired:
Fume Hood
Deionized Water SystemChest Freezer
CTD/Rosette System-70 Deg Freezer
10-liter Niskin Bottles
Pinger for Wire Use

Is nighttime work anticipated on this cruise?

    Critical MET sensors:
    Critical CTD sensors:

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

Long baseline (LBL) transponder navigation? Yes No. of xpndrs/nets: 8/2 nets
Ultra-short baseline (USBL) navigation?
Doppler/GPS navigation?

Will you be using portable science vans? No How many:

Science Van #1
Science Van #2
Science Van #3

Anticipated standard oceanographic cable use:

Instrument Weight(s)
Maximum Depth
    Conducting hydro
2700 m
    Steel hydro
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
YesNumber 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?

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: It is strongly desired that some equipment be stowed for subsequent use on Lilley Oct/Nov S-EPR crui

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?

Vehicle equipment required:Check one or both:
Major water samplers
Large capacity slurp samplers
Small capacity slurp samplers
Bio collection boxes
Push corers
Scoop nets
High temperature probe
Low temperature probe
Heat flow probe
Portable CTD
Digital Still Camera
Search Sonar
Profiling Sonar
Rock Drill (Jason only)
Video Duplication (Jason)
    Other vehicle-related equipment (list):
    Science equipment to be installed on vehicle:
Tentative List (specs will follow):

PMEL manifold sampler
BioBox (for biological specimen collection)

Temporary/transported equipment (specs will follow):

Filter columns and bases to be deployed on sea floor; particle and dissolved organic material extraction. Supplied by Cowen/Johnson.
Titanium water samplers
Cement (grout) dispensors
Water pump sampler (possibly)
    Electronic equipment used in the ALVIN personnel sphere:
Switch box for Water pump sampler
    Other comments and information:
Date Submitted: 06/03/98 01:30 AM