Cruise Planning Questionnaire


Ship: OCEANUS
    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Joan Bernhard
    Affiliation:
WHOI
    Address:
MS 52
    Phone:
508 289 3480
    Email:
jbernhard@whoi.edu
    POC / contact info:
Departure port & date:14 May 2006
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
~9
Arrival port & date:26 May 2006
Op area:NA6 & NA9
Lat/Lon:~35 10N, 75N; ~24 45 N, 79 15 W; ~26 N, 78 W; ~26 15 N and 77 45 W
Depth range:200-2000 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: OCE 0437366 & OCE 0350794

    Science objectives/activities planned:
We will carry out multicoring, Soutar box coring, gravity coring, and CTD rosette casts, to collect surface sediments, pore water, and bottom water for culturing studies of benthic foraminifera. Culturing methods provide ways to study environmental and physiological (“vital”) influences on the shell chemistry of benthic foraminifera. Recent efforts in the investigators’ laboratory resulted in growth and reproduction of Bulimina aculeata, an infaunal species common on the NW Atlantic continental margin, under controlled conditions in artificial-sediment culture chambers. The stable isotopic and trace element compositions of these cultured B. aculeata were determined, and the foraminiferal *13C, *18O, Cd/Ca, and Ba/Ca values were compared with the water chemistry of the culture system, and with the shell chemistry of “free-range” B. aculeata collected from NC and SC margin sites. This study demonstrated that foraminiferal cultures that reproduce and calcify can be maintained under tightly constrained carbonate chemistry and trace element concentrations and that the cultured foraminifera show reproducible, interpretable compositional patterns that are consistent with field-based understanding of foraminiferal ecology and shell chemistry. The project proposed here will move this research to its next level: Experimental studies designed to isolate the influence of single factors that influence benthic foraminiferal shell chemistry. Two culturing studies, which will take about one year each, have been designed to address key aspects of the controls on benthic foraminiferal shell chemistry. In each year (each of the 2 experiments) both B. aculeata (our “lab rat”) from a 220-m site and also epibenthic species (e.g., Cibicidoides) from deeper-water sites (collected on the Little Bahama Bank and Great Bahama Bank) will be cultured. Year 1 experiments are presently pursuing intriguing results from work to date, and from previous culturing studies of planktic foraminifera, by investigating the influence of carbonate ion concentration on shell composition (*13C, *18O, Cd, Ba, Mg, Sr, U, V). Year 2 experiments (to be done with the samples to be collected on this cruise) will document the response of benthic foraminiferal trace element composition to variations in dissolved trace metal concentrations, and the response of benthic foraminiferal carbon isotopic composition to the *13C of their algal food. Substantial culturing effort (~25% of the facility and time) will be devoted in both years to exploratory studies on temperature influence on foraminiferal shell chemistry (in particular, Mg/Ca), designed to help define problems and approaches most suitable for future culture work. In addition to these culturing studies, related field-based studies of in situ foraminiferal life positions and shell composition will also be conducted.

WHOI shipboard scientific instrumentation desired:
    12 kHz Transducer
    3.5 kHz Transducers
Fume Hood
Refrigerator
Deionized Water SystemChest Freezer
    Gravity Corer
CTD/Rosette System
    Box Corer
Walk-In Cooler
10-liter Niskin Bottles
Pinger for Wire Use

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

Will you be using portable science vans? Yes How many: 2


Science Van #1
Science Van #2
Science Van #3
    Type/size
UNOLS shared use cold van (U Del)
WHOI cold van
    Location
main deck
main deck or 01 deck
    Water
not needed
not needed
    Power
needed
needed

Anticipated standard oceanographic cable use:

Instruments(s)
Instrument Weight(s)
Maximum Depth
    Conducting hydro
CTD
?
2000 m
    Steel hydro
if needed for side deployment of MC800
?
2000 m
    Steel trawl
MC800, Soutar boxcorer (Duke Univ?)
?, ?
2000 m each
    .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?

If yes, please provide details:
Will there be special requirements for:

    Electrical power
No
    Equipment handling
No
    Inter/intraship communications
No
    Science stowage
Yes

If yes to any of the above, please identify: Delicate cores must stay aboard ship in functional cold van until Oceanus returns to WHOI

Will any of the following items be used on board?

    Explosive devices
No
    Portable air compressors
No
    Flammable gases
Yes
    Radioisotopes
No
    Isotope van
No

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?
We will take off what we bring on.