Cruise Planning Questionnaire


Ship: ATLANTIS
    Vehicle(s) required:
ALVIN
    Name of ship for ROV ops:
    Ch Sci:
Daniela Di Iorio
    Affiliation:
University of Georgia
    Address:
Department of Marine Sciences
250 Marine Sciences Building
Athens GA 30602
    Phone:
706 542 7020
    Email:
daniela@uga.edu
    POC / contact info:
Departure port & date:Astoria OR, Sep 11, 2007
    Distance to first station:
239 nm
    Number of stations:
1
    Distance between stations:
0
    Total days on station:
4
Arrival port & date:Astoria OR, Sep 20, 2007
Op area:Main Endeavour vent field, Endeavour Ridge
Lat/Lon:47deg 56.88N, 129deg 5.94W
Depth range:2200
    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-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. Instrumentation will be deployed during an Aug 1-22 cruise with Atlantis using Jason. For this cruise (Sept 11-20) instrumentation will be recovered, serviced and redeployed within 50 m of the vent plume to where they were previously placed.

Activities planned:

1) Locate acoustic scintillation transmitter (Tx) mooring with Alvin and move to a location where the anchor can be dropped via acoustic release. Note mooring will have a Sonardyne transponder with appropriate codes. Recover instrumentation at the surface with Atlantis (instruments will have a Seimac Xenon flasher and radio beacon for locating). Repeat procedure for the acoustic scintillation receiver (Rx) mooring: locate with Alvin, move, release the anchor, recover at surface with Atlantis.

2) Service instrumentation with new batteries, upload data and prepare mooring for redeployment.

3) Sample the vent 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).

4) Deploy transmitter (Tx) mooring at a drop location near either Hulk or Grotto vents. Locate the Tx mooring (which will have a transponder coded appropriately so that it won't conflict with other beacons in the area) with Alvin, using a homer probe. Lift the mooring (which will be <40 kg in water) using Alvin's manipulators on any of the galvanized rings along the mooring and move it to the location where it was previously deployed (see activity 1).

5) Deploy receiver (Rx) mooring at a drop location near either Hulk or Grotto vents. Locate the Rx mooring (which will have a transponder coded appropriately so that it won't conflict with other beacons in the area) with Alvin, using a homer probe. Lift the mooring (which will be <40 kg in water) using Alvin's manipulators on any of the galvanized rings along the mooring and move it to the location where it was previously deployed (see 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
    Type/size
    Location
    Water
    Power

Anticipated standard oceanographic cable use:

Instruments(s)
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)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)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 to a depth of 2200 m.
    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?
No
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
No
    Radioisotopes
No
    Isotope van
No

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?