2.0. OPERATIONS
Scheduling of individual activities will depend upon weather conditions
and progress of scientific work, therefore, firm advance scheduling of
events will not be possible, and a continual dialogue between scientific
and ship's personnel will be especially important. To insure fulfillment
of all the scientific objectives, the ship is asked to steam at maximum
cruising speed whenever time in transit and between stations is greater
than one hour.
A standard oceanographic watch will be utilized which consists of a
winch operator, a scientific staff of three and a Survey Tech on deck.
Operations will be conducted 24 hours a day.
2.1 SUMMARY OF ACTIVITIES (See Table 1 and Figure 1):
- The summary below is the tentative order of execution. The order
of activities will be determined by the Chief Scientist.
a) Proceed to offshore end Line D off St. George Island (Fig. 1) and
begin CTD survey heading north. Stations should be approximately 9 km apart,
but closer spacing may be needed in the area of the front. Water bottles
for collecting nutrients, chlorophylls and microzooplankton samples should
be used at stations specified by the project scientists. An acoustic transect
should be done both day and night on this transect. ROV deployments, MOCNESS
tows and Methot, anchovy or bottom trawls will be made along this transect
at stations specified by the chief scientist. Up to 2 days will be spent
at this transect.
b) Proceed to the inner front of Line C on the other side of St. George.
(Fig. 1). Conduct similar physical, biological and acoustic sampling operations
as described in previous section over a complete diel cycle (2 days) sampling
both at the front and on both sides of the front.
c) Proceed to front on Line B south of St. Paul and continue physical,
acoustical and biological sampling as before (2 days).
d) Proceed to front on Line A north of St. Paul and continue physical,
acoustical and biological sampling as before (2 days).
e) Depending on progress of the survey, the ship will either proceed
to the Pribilof Canyon area (Fig. 1) to do extra ROV deployments as before
or it may return to an area of high pollock density determined previously
and do a full diel series sampling at least 48 hours at the same station.
At any time during the sampling when large aggregations of pollock or seabirds
are observed, additional sampling will be requested at that location. Depending
on weather, several biologists will be deployed on the rhib boat to collect
seabirds. If there is more time available at the end, an additional diel
series or several acoustic transects with trawl sampling will be requested.
f) The cruise will end with a touch-and-go at St. Paul and all scientists
will disembark.
A standard oceanographic watch will be utilized which consists of a
winch operator, a scientific staff of three and a survey tech on deck.
Operations will be conducted 24 hours a day. A fishing crew will be required
to assist with the MOCNESS, Methot, midwater or bottom trawls, which may
be conducted in daytime or nighttime. A survey tech and winch operator
will be needed for CTD, bongo and ROV operations. These will be conducted
at times and locations to be determined by the Chief Scientist, based on
acoustic signal and juvenile abundance. Collections of juvenile pollock
for growth and condition studies will be made during the juvenile survey.
2.2 PROCEDURES FOR OPERATIONS:
Please refer to FOCI Standard Operating Instructions for NOAA Ship Miller
Freeman, 1997 (1/13/97).
- Relevant Sections:
- 2.2.1 CTD/Water Operations
2.2.2 MARMAP bongo tow
2.2.5 MOCNESS tows
2.2.7 Methot trawl
2.2.8 Midwater trawls
2.2.10 Chlorophyll Samples
2.2.12 EK-500
2.2.13 ADCP
2.2.14 Radiometer
3.4 Seachest and Uncontaminated Seawater
3.0. FACILITIES AND EQUIPMENT
The following systems and their associated support services are essential
to the cruise. Sufficient consumables, back-up units, and on-site spares
and technical support must be in place to assure that operational interruptions
are minimal. All measurement instruments are expected to have current calibrations,
and all pertinent calibration information shall be included in the data
package
3.1 Equipment and Capabilities to be Provided by the Ship
SEAS XBT launcher, recorder, and probes for synoptic weather report,
Oceanographic winch with slip rings and 3-conductor cable terminated
for CTD,
Wire-angle indicator and readout for oceanographic winch to be used
with bongo tows,
Oceanographic winch for bongo net sampling with slip rings and 3-conductor
cable terminated for electronic Time-Depth recorder. Wire should be capable
of 1200 lb. loading,
Sea-Bird 911 plus CTD system to be used with PMEL stand (primary system)
(The underwater CTD unit should have mounts compatible with the PMEL CTD
stand).
Sea-Bird 911 plus CTD system with stand (back up system)
(Each CTD system should include: underwater CTD, deck unit , tape recorder,
weights, and pinger).
10-liter sampling bottles for use with rosette (10 plus 4 spares),
For CTD field corrections: IAPSO water and AUTOSAL salinometer,
Sea-Bird SBE-19 SeaCat (backup system),
Meter block for plankton tows,
Wire speed indicator and readout for port, starboard, and Rowe winches,
For meteorological observations: 2 anemometers (one the R. M. Young
system interfaced to the SCS), calibrated air thermometer (wet-and dry-bulb)
and a calibrated barometer and/or barograph,
Freezer space for storage of nutrient samples (blast and storage freezers),
Simrad EQ-50 echo sounder ,
JRC JFV-200R color sounder recorder,
RDI ADCP with PC-compatible data acquisition computer and SyQuest drives,
Radar-tracked drifter buoys,
Bench space in DataPlot for PCs, monitor, printer and VCR to
fly MOCNESS,
Use of 486 PC in DataPlot for data analysis,
SCS (Shipboard Computer System),
Aft Rowe winch with single conductor cable and sliprings for MOCNESS,
Electrical connection between Rowe winch and DataPlot,
Stern platform should be removed and stowed priot to departure,
Laboratory space with exhaust hood, sink, lab tables and storage space,
Sea-water hoses and nozzles to wash down nets,
Adequate deck lighting for night-time operations,
Navigational equipment including GPS and radar ,
Safety harnesses for working on quarter deck and fantail,
3.2 Equipment to be Provided by the Project
Sea-Bird SBE-19 SeaCat, SBE 36 deck unit, SBE Power Data Interface Module
(PDIM), and SBE 5T pump (primary system),
PMEL PC with SEASOFT software for CTD data collection and processing,
Fluorometer, light meter, and chlorophyll absorbance meter (ChlAM) to
be mounted on CTD,
CTD stand modified for attachment of fluorometer,
Temperature thermistors for CTDs (one for primary system, one for back
up system),
CTD rosette sampler
XBT's for project,
60-cm bongo sampling arrays,
20 cm bongo arrays,
Spare wire angle indicator,
Electronic BKG computer, printer and software,
Anchovy midwater trawl,
ScanMar,
Methot frame and trawl,
MOCNESS, primary and spare parts, and expendables,
Super Phantom 2 ROV,
Hitachi CCD Color Video Camera,
Bathythermograph and Light Meter for ROV,
ROV cables and accessories,
Miscellaneous scientific sampling and processing equipment,
Scientific ultra-cold freezer,
Poly Nor'eastern bottom trawl,
5'x7' steel-V trawl doors (1250 lbs.)
3.3. Scientific Computer System (SCS)
Please refer to FOCI Standard Operating Instructions for NOAA Ship Miller
Freeman, 1997 (1/13/97).
3.4. Ultra-cold Freezer Requirements
Please refer to FOCI Standard Operating Instructions for NOAA Ship Miller
Freeman, 1997 (1/13/97).
4.0. DATA AND REPORTS
Please refer to FOCI Standard Operating Instructions for NOAA Ship Miller
Freeman, 1997 (1/13/97).
5.0. ADDITIONAL INVESTIGATIONS AND PROJECTS
5.1. Additional Investigations
Marine bird scientists will monitor bird abundances from the flying bridge
during transects, and may request the use of the rigid-hull inflatable boat
for collecting seabirds. Scientists will bring firearms and ammunition on
board, but will check these with the XO during the cruise.
5.2. Ancillary Projects:
Ancillary tasks will be accomplished in accordance with the NOAA Fleet
Standing Ancillary Instructions.
5.3. Piggyback Projects:
None at this time.
6.0. MISCELLANEOUS
Please refer to FOCI Standard Operating Instructions for NOAA Ship Miller
Freeman, 1997 (1/13/97).
Hazardous Materials.
- Additions to FOCI/AFSC chemical manifest -- none
7.0. COMMUNICATIONS
Please refer to FOCI Standard Operating Instructions for NOAA Ship Miller
Freeman, 1997 (1/13/97).
8.0. APPENDICES
Table 1. Operations - CTD Stations (not included here)
Figure 1. CTD Stations (not included here)
