Cruise Planning Questionnaire


Ship: KNORR
    Vehicle(s) required:
    Name of ship for ROV ops:
    Ch Sci:
Craig M. Lee
    Affiliation:
University of Washington, Applied Physics Laboratory
    Address:
1013 NE 40th St, Seattle, WA 98105-6698
    Phone:
206-685-7656/206-372-2268
    Email:
craig@apl.washington.edu
    POC / contact info:
Departure port & date:23 January 2003
    Distance to first station:
    Number of stations:
    Distance between stations:
    Total days on station:
26
Arrival port & date:17 February 2003
Op area:North/Central Adriatic Sea
Lat/Lon:42-46 N, 12-18 E
Depth range:approx. 20-1000 m
    Will the vessel be operating within 200 NM of a foreign country?
    Which country?
    Are visas or special travel documents required?

Funding agency:
      ONR/Navy
Specify:

Grant or contract number: N00014-02-1-0064

    Science objectives/activities planned:
ABSTRACT

Our study focuses on understanding the dynamics of fronts, eddies, filaments and freshwater plumes in the Adriatic Sea. These investigations will concentrate on how seasonally variable atmospheric forcing, ambient stratification and coastal freshwater discharge act to govern mesoscale variability. Processes of interest include eddy generation and watermass formation by wintertime convective overturning, the generation of filaments and eddies by instabilities of the atmospherically forced coastal currents and the response of buoyant river plumes to strong atmospheric forcing. These processes influence the Adriatic Sea general circulation and contribute Mediterranean deep water, thus effecting the transport and fate of nutrients, planktonic organisms, larval fish and pollutants. Three distinct regimes will be studied: (1) Bora- downwelling favorable winds, weak ambient stratification, (2) Sirocco- upwelling favorable winds, weak ambient stratification and (3) Spring freshette- strong freshwater outflow, downwe
lling favorable winds, stratified waters.

MEASUREMENT PROGRAM

This study will employ a towed, undulating sensor platform (SeaSoar) to make highly resolved, three-dimensional measurements of physical and optical variability associated with specific mesoscale features. SeaSoar undulates between the surface and 200 m depth while being towed at speeds of up to 8 knots. Rapidly repeated surveys will document the spatial structure and temporal evolution over the multi-day span of individual atmospheric events. Additional measurements will be made by other scientists participating in the cruises. Activities will include (with principal investigator):

1. SeaSoar towed profiler surveys. Measurements will include temperature, salinity, chlorophyll and dissolved organic matter fluorescence, light transmission, dissolved oxygen, velocity, 9-channel absorption and attenuation and upwelling and downwelling irradiance. (Dr. C. Lee, UW-APL)

2. Shipboard sensors measuring velocity profiles and meteorological parameters (wind velocity, short and long wave radiation, air and sea temperature, relative humidity, barometric pressure) (Dr. C. Lee, UW-APL and Dr. C. Dorman, SDSU/SIO).
3. Surface drifters (some will include sensors for temperature, salinity and velocity). These will be repeatedly deployed and recovered over the course of the cruise (Dr. P. Poulain, OGS-Trieste).
4. Turbulence measurements using a bottom lander instrumented with an upward-looking Acoustic Doppler Current Profiler (ADCP). The lander is a small, ~2 m diameter, ~1.5 m high frame that rests on the seabed, and will be repeatedly deployed and recovered throughout the cruise. Typical deployments will last ~4 days. All hardware, including anchors, will be recovered (Dr. H Peters, RSMAS).
5. Optical measurements (9-channel absorption and attenuation and upwelling and downwelling irradiance, additional measurements to provide calibration for satellite remote sensing). These will be performed continuously while underway (Dr. R. Arnone, NRL-Stennis Space Center and Dr. E. Marui, OGS-Trieste).
6. Underway and bottle nutrients and pigment analysis (Dr. Marini, CNR-IRPEM, Dr. B. Jones, USC).
7. Phytoplankton counts and taxonomy (Dr. Vilici, UZ).
8. Protein. lipid, bacteria and virus analysis (Dr. Pusceddu, UA).
9. Real time remote sensing and in-situ optics (Dr. Arnone, NRL- Stennis Space Center).
10. In-situ hydrographic and optical measurements (Dr. B. Jones, USC).

Because the processes we wish to study vary on small temporal and spatial scales, we use satellite remote sensing to guide a highly adaptive sampling strategy. We thus request permission to conduct a series of small surveys in the northern and central Adriatic. All surveys would be located within the shaded region indicated on the enclosed chart (Figure 1), with sample patterns depicting the survey track Knorr could occupy steaming at 8 knots for 3, 12 and 24 hour periods. The survey patterns shown are intended only as examples- specific survey locations will be determined during the cruise in response to observed environmental conditions. The bottom lander (4) would typically be deployed in the center of a survey pattern. Surface drifters would be deployed upstream of a survey pattern, and recovered downstream after several days.

Our science program involves two cruises, tentatively scheduled for January (26 days) and May (21 days) 2003. We tentatively plan to stage from Ancona, Italy, for both cruises. Mid-cruise transfer of scientific personnel may be carried out using an IRPEM vessel sailing from Ancona.

WHOI shipboard scientific instrumentation desired:
Oxygen Titration Apparatus
Refrigerator
Deionized Water SystemChest Freezer
CTD/Rosette System-70 Deg Freezer
Walk-In Cooler
10-liter Niskin Bottles

Is nighttime work anticipated on this cruise? Yes

    Critical MET sensors:
    Critical CTD sensors:
T, C, oxygen, Fchl, Xmiss

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

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

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


Science Van #1
Science Van #2
Science Van #3
    Type/size
20'
    Location
access for storage only
    Water
no
    Power
no

Anticipated standard oceanographic cable use:

Instruments(s)
Instrument Weight(s)
Maximum Depth
    Conducting hydro
optical profiling package
200 lbs
1000 m max cable length
    Steel hydro
    Steel trawl
    .681" fiber optic
    Do you require slip rings?
YesNumber of conductors:2
    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
Yes
    Equipment handling
Yes
    Inter/intraship communications
Yes
    Science stowage
Yes

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?


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
Magnetometer
Portable CTD
Digital Still Camera
Search Sonar
Profiling Sonar
Rock Drill (Jason only)
Video Duplication (Jason)
Elevators
    Other vehicle-related equipment (list):
    Science equipment to be installed on vehicle:
    Electronic equipment used in the ALVIN personnel sphere:
    Other comments and information:
Date Submitted: 10/06/2002 12:00 AM