Cruise Planning Questionnaire

    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Craig Cary
University of Delaware
College of Marine Studies
700 Pilottown Rd.
Lewes, DE 19958
    POC / contact info:
Departure port & date:1/12/00
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:1/23/00
Op area:NP13 - Guaymas Basin
Lat/Lon:27,00N, 111-24W
Depth range:<2000m
    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 - 9729784

    Science objectives/activities planned:
Primary Cruise Objective:
The Luther/Cary/Reysenbach LExEn program has 8 allocated Alvin dives on this cruise. The primary objective of the LEXEN program will be to survey and sample specific diffuse flow habitats with a new microelectrode array and thermocouples and to collect sulfide and sediment samples from these sites for microbial characterization.

Ancillary Activities:
Collect Riftia clumps and place in coffin
Water chemistry with SIPPER (see LExEn) around Riftia clumps
Collect Clams
Water samples near chimney with go-flow
Sea-net use (Fornari)

WHOI shipboard scientific instrumentation desired:
Fume Hood
Deionized Water SystemChest Freezer
-70 Deg Freezer

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: 2-4 long baseline
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
    Steel hydro
    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?

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: Equipment will be loaded in San Diego

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:

SIPPER/microelectrode System:
The microelectrode/- SIPPER array consists of two distinct operational units that are connected only through the terminal sampling wand.

The SIPPER unit is a microwater sampler that requires a 50 v DC power source and RS232 communication. In-water weight of 21 lbs/air 41lbs. 50v power out of sphere from a Vicor DC-DCpower supply (26v input). RS232 comunication is used for control of the unit and input of data. The sipper has been deployed on 6 past cruises very successfully and is well known by the Alvin group. Attached to the SIPPER is a separate thermocouple unit that requires RS232 communication and 12 volt power. This unit was designed and built by Lane Abrams at WHOI and
needs to be logged in the Alvin data system and displayed on the video data overlay. Previously the serial port replaced the Alvin ICL serial port since the data and display functions do not require any changes using this port. The SIPPER unit has the ability to take 12 independent water samples. This unit is positioned at the
rear of the basket but in view of the pilot. The water samples are taken with continuous temperature measurements through 2 tubes that terminate in a "T" handled wand unit. The thermocouple unit interfaces with the wand and is cabled back to a small communication bottle positioned to the rear of the basket. We anticipate that this unit will go down on all dives.

A new addition to the SIPPER will be a small water pump (Sea-Bird) that will require 15 volts output from the sub. We have built a small converter that will be wired inside the sub to take 26v and step it down to 15v. This converter also will be equiped with an independent switch that will be used to turn the unit on and off. An amp meter in this control box serves to inform the user if the unit is operational and pumping.

The microelectrode device (potentiostat) consists of 1 electronics bottle and
optionally an additional battery pack. cabled together and a series of 12 cables that
terminate in the electrodes themselves. We will attempt to run the unit off Alvin
power (the single bottle configuration) but in the event that there is too much
electronic noise we will power off batteries (two bottle configuration). The bottles
will be positioned at the rear of the basket. The electrode cables will be combined
into the SIPPER tubing sheath with the electrodes interfacing with the wand unit.
The electronics unit is 6" dia x 24" long, 90 lbs air weight (65# water weight). We
will need one "switched" 2 amp - 12 Volt line to run the potentiostat directly from
Alvin. If that does not work, we will still need an additional 12 V line to power the
on/off of our own battery power pack which will be in another housing in the basket.
One of two battery packs might be used. The small pack is 60# in air, the large
pack is 120# in air. Communication with the unit will be through an RS232 link and
logged on a science laptop that has been gas tested. Pressure certs are complete
and will be provided by science party. Ground detection issues have been reviewed
by Abrams. Don Nuzio will be responsible for installation details and maintenence of
this new instrument. This unit operated successfully on all 22 of our dive last May.

Chimney Sampling:
We have designed several new sampler devices that we will be testing on this cruise
to take discrete sulfide samples. Our general approach will be to use small
shovel-like devices that have bags attached that will trap the samples. We will also
try a simple coring device to see if this works better.

Sediment sampling

We have designed 3 new sediment corers specifically for use on the cruise. These new corers have a retaining cap that will be activated once the core has been taken and placed into the holster. This cap will seal the core in an effort to retain and maintain the integrity of the water/sediment interface.

Fornari Digital Deck
We would like to have Dan s Sony DSR-20 digital deck (110vac) put into the sphere and spliced off from the 3-chip camera so that we can record both on the digital deck and the normal hi-8.

Other stuff:

Possible Fornari Benthos digital camera on basket or down facing. with pencil cam viewfinder . Self
recording, needs 26 volt power, will use HMI light source. Installation pending basket payload and need.

A new Cary small bio-box has been built and will be deployed.
    Electronic equipment used in the ALVIN personnel sphere:
All equipment to go in the sphere has been sniffed.

One lap top computer to operate the DLK SUB1
A small palm-top computer to operate the SIPPER
switch box for sea-bird pump
Vicor power supply
Sony DSR-20 digital deck
    Other comments and information:
parsed Alvin data files for Cary will be needed. This can be arranged on the ship.

Date Submitted: 12/08/99 07:07 PM