Cruise Planning Questionnaire


Ship: OTHER (ROV ops)
    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
James Cowen/Paul Johnson
    Affiliation:
University of Hawaii
    Address:
Department of Oceanography
1000 Pope Road
University of Hawaii
Honolulu, HI 96822
    Phone:
808-956-7124
    Email:
jcowen@soest.hawaii.edu
    POC / contact info:
Departure port & date:Aug. 25, 1999
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
12
Arrival port & date:Sept. 6, 1999
Op area:Juan de Fuca Ridge
Lat/Lon:46-48 N/ 127-130 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:
      NSF
Specify:

Grant or contract number: 9714286

    Science objectives/activities planned:
Statement of Activities:

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. Six of these scavenging columns were deployed last year (JULY, 1998) using ALVIN. We will recover these 6 columns using JASON and an elevator system. In addition, we will deploy combination in situ pump/filtration/scavenging/sensor (To and Eh) system at ODP Hole 1026B site for several periods lasting from hours to days. The PUFS syste
ms (for PUmp Filtration and Sensors system) will be transported to/from seafloor on the elevator and positioned with the JASON. Also, water will be collected from all sites for various inorganic, organic and microbiological analyses using Ti-major samplers supplied by JASON group. All operations and deployed instrumentation will be thoroughly photo-documented using still and video cameras.
Non-JASON operations will include CTD-rosette casts at Endeavour Segment and Axial Volcano; testing of in situ laser light particle analyzer; XBT sensitivity to hydrothermal plumes' temperature anomalies; surface ship deployment of a thermal blanket.
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).

TASK LIST

JASON Dives:
1. Most equipment transit to/from seafloor via elevator system.
2. Recover BioColumns from 1026B (1), Baby Bare (3), Endeavour (1), and Axial Volcano (1).
3. Deploy/recover sequentially several short term PUFS (in situ Pump-Filtration-Sensor systems) at 1026B .
4. Deploy/recover 1-2 mini-column(s) at 1026B.
5. Deploy one mini-column at 1026B for later ALVIN recover (Becker cruise) (tentative)
6. Collect water samples (Ti-majors) at all 4 sites.
7. Temperature probing at all sites.
8. Photo-document all sites, activities and samplers.
9. JASON SM2000 scanning sonar.
10. Thermal blanket deployments at BB, Endeavour and Axial.
11. Deploy unrestricted flow meter/temperature sensor in cemented box at Axial.
12. Collect sediments at least at 1026B and Baby Bare
13. Collect macro-fauna as time permits.

Non-Dive Operations (deployment/recovery direct from Thompson):
1. CTD/Optical-rosette casts at Endeavour, Axial, and background
2. Test in situ laser scattering particle analyzer (with CTD)
3. Test/calibrate deep XBT against CTD with respect to detection of neutrally-buoyant hydrothermal plume temperature anomaly (at Axial) versus background.
4. PUFS system deployment for background deep seawater.
5. Deployment of Thermal Blanket from ship (BB, Endeavour, Axial)

WHOI shipboard scientific instrumentation desired:

Is nighttime work anticipated on this cruise?

    Critical MET sensors:
    Critical CTD sensors:

Do you need Seabeam? (AT and KN only)

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

Will you be using portable science vans? How many:


Science Van #1
Science Van #2
Science Van #3
    Type/size
    Location
    Water
    Power

Anticipated standard oceanographic cable use:

Instruments(s)
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?

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:

Will any of the following items be used on board?

    Explosive devices
    Portable air compressors
    Flammable gases
    Radioisotopes
    Isotope van

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

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
Magnetometer
Portable CTD
Digital Still Camera
Search Sonar
Profiling Sonar
Rock Drill (Jason only)
Video Duplication (Jason)
Elevators
    Other vehicle-related equipment (list):
    Science equipment to be installed on vehicle:
    Electronic equipment used in the ALVIN personnel sphere:
    Other comments and information:
Dive Sites and Foreign clearance (Canadian Waters):

Site #1 - ODP drill hole 1026b
47.7633o N 127.7600o W depth ~2660 m
(47o 45.8' N 127o 45.6' W)

Site #2 - Baby Bare seamount
47.7133o N 127.7867o N depth ~2600 m
(47o 42.8' N 127o 47.2' W)

Site #3 - Endeavour Ridge Axis
47.9500o N 129.1000o N depth ~2250 m
(47o 57.0' N 129o 06.0' W)

Site #4- Axial Volcano
45.926o N 129.98o W depth ~1400-1500 m
(45o 55.56' N 129o 58.8' W)

Clearances (International and US Naval) sought for the entire area bounded by the following coordinates for the duration of the cruise. This is important because, due to the nature of the experimental equipment deployments, each site must be visited on a rotating basis throughout the cruise. The coordinates that define this umbrella box are:

48.12 deg N 130.15 deg W
45.75 deg N 127.58 deg W

Alternatively, the operations box could be devided in to a northern box and the Axial Volcano site as follows:

Northern box:
48.12 deg N 129.27 deg W
47.55 deg N 127.59 deg W

Axial Volcano (with 10 mile radius):
45.926 deg N 129.98 deg W

Date Submitted: 06/28/99 05:23 PM