Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Daniela Di Iorio
University of Georgia
Department of Marine Sciences
250 Marine Sciences Building
Athens GA 30602
706 542 7020
    POC / contact info:
Departure port & date:Astoria, OR AUG 01, 2007
    Distance to first station:
239 nm (Astoria to Endeavour)
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:Astoria, OR AUG 22, 2007
Op area:Main Eneavour vent field
Lat/Lon:47deg 56.88 N, 129deg 5.94W
Depth range:2200 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-0449578

    Science objectives/activities planned:
Science Objectives:

The main objective of this research is to measure continuously, for extended periods of time (> months) the along-valley tidally driven horizontal flow, and the buoyantly driven vertical flow and temperature fluctuations of hydrothermal vent fluid from either Hulk or Grotto vents in the Main Endeavour vent field (decision on the black smoker vent is dependent on NEPTUNE Canada integrated studies site). Measurements will be
over an extended period of time so that comparisons can be made with
independent seismic data collected by NOAA/PMEL. This will be accomplished by deploying an acoustic scintillation system within 50 m of the vent plume.

Activities planned:

1) Survey appropriate black smoker vent (either Hulk or Grotto) to determine the location of the scintillation transmitter mooring (Tx) and scintillation receiver mooring (Rx). Each will be placed approximately 50 m from the plume aligned perpendicular to the axial valley direction. Sample the plume temperature as a function of height (from the orifice to 25 m above). Video image the plume from the orifice to 25 m above. If a high frequency digital echosounder is available then obtain cross sectional imagery of the plume (see vehicle-related instrumentation section below).

2) Build the acoustic transmitter mooring (Tx) which will be approximately 35 m long with syntactic foam floatation. Deploy it at a drop location near either Hulk or Grotto vents.

3) Locate the Tx mooring (which will have a transponder coded appropriately so that it won't conflict with other beacons in the area) with Jason, using a homer probe. Lift the mooring (which will be <40 kg in water) from the top using the moorings' floating tag line and move it to the location identified in activity 1.

4) Build the Rx mooring with similar specifications as the Tx mooring described in 2) and 3) above. Deploy to a drop location where Jason can get it.

5) Move the Rx mooring to its location identified in activity 1.

WHOI shipboard scientific instrumentation desired:

Is nighttime work anticipated on this cruise? Yes

    Critical MET sensors:
    Critical CTD sensors:

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

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

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
    Steel hydro
Acoustic Transmitter and Receiver moorings
Each mooring weight in water is approximately 35-40 kg. Each mooring consists of syntactic foam float (30in, 250lbs buoyancy), acoustic scintillation RX (or TX) (63kg in water), Oceano acoustic release (22kg in water), anchor/chain (45 kg in water)
mooring will be deployed from the surface.
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
NoNumber 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
    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
    Isotope van

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?