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:5/8/99
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
Arrival port & date:6/8/99
Op area:NP 13 - 9N EPR
Lat/Lon:9N, 105W
Depth range:2500m
    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- 9618007

    Science objectives/activities planned:
Crab cruise requirements

Our primary objective of our research on this cruise willbe to continue a comprehensive examination of the life history of the Brachyuran vent crab Bythogrea thermodron. In particular, we will be focusing on the behavior and ecology of the early life stages. During a previous cruise last November we were able to obtain only a few megalopal and juvenile stage crabs from the 9N sites (EPR) some of which have been successfully maintained in the laboratory at atmospheric pressure for over 8 months. While in the laboratory we have conducted preliminary studies on swimming behavior under different temperature regimes. Individuals maintained at atmospheric pressure for prolonged periods either failed to metamorphose from the megalopal stage or expired during an early juvenile molt.

Our primary goals during the LARVE cruise will be to:
1) collect megalopae for continued swimming and behavioral studies under pressure.

2) collect juvenile crabs to examine the pressure dependency of the molting process.

3) conduct an extensive survey of on and off axis sites for egg-bearing crabs or gravid females retaining sperm plugs

4) collect and maintain egg-bearing crabs or gravid females retaining sperm plugs under pressure in an effort to obtain the zoeal stage.

5) collect all available life stages for stable isotope, gut content, and lipid analysis.

Four Alvin dives have been awarded to augment our LARVE proposal. We anticipate that we will integrate our dives with the Luther/Cary LExEn dives (8) for a total of 12 dives. The advantages afforded by a extended dive series (12) greatly expands our collection capabilities. For the crab portion of these dives we will :
1) Deploy, survey, and retrieve crab trabs from within active vent sites.
2) Set up an extensive off axis trap grid that will be surveyed daily.
3) Collect traps when necessary from off axis and place in Coffin or use elevator
4) Collect Riftia clumps and place in coffin
5) Water chemistry with SIPPER (see LExEn) around Riftia clumps

An ancillary research program will be conducted by our group. This study focuses on analyzing the thermochemical environment inhabited by the Pompeii Worm, Alvinella pompejana. This work is a continuation of NSF sponsored research that has been conducted over that last 3 years. We will obtained water samples and temperature measurements from within the worms tube. Deploy HOBOs where necessary. Analysis of these data will be used to corroborate previous observations suggesting A. pompejana inhabits the highest temperature environment of any metazoan. Some Alvinella samples will be collected into the Cary BioBox.

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) No

Long baseline (LBL) transponder navigation? Yes No. of xpndrs/nets: currently on site
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: Power in walk-in refridgerator if possible

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:
we will need the ICL data logging to be active. We will want a specific subset of Alvin data to be sectioned for us.

We will be using the SIPPER system. Has an inwater weight of 26lbs and out of 41lbs.
50v power out of sphere from a Vicor DC-DC power supply (26v input). RS232 input of data. Data on Sipper system included in the LExEn cruise questionaire.
Need 12v out of sphere source for ICL thermocouple.
    Electronic equipment used in the ALVIN personnel sphere:
HP palm top computer - already tested
IBM thinkpad computer - will need to be tested - will be sent with Luther equipment.
    Other comments and information:
Date Submitted: 03/15/99 04:49 PM