COOK-BOOK II (KM0314): Chief Scientist Report
Chief Scientist: K. BJÖRKMAN
Departed Kodiak: October 1, 2003 at 1430 (AST)
Arrived Honolulu: October 10, 2003 at 0730 (HST)
Vessel: R/V Kilo Moana
Operator: University of Hawaii
Master of the Vessel: Captain Grey Drewry
Chief Scientist: Karin Björkman
STAG Electronics Technician: Tim McGovern
STAG : Kuhio Vellalos
1. SCIENTIFIC OBJECTIVES
The objective of this cruise was the collection of hydrographic and
biogeochemical data along the transect from Kodiak Island, AK to Oahu,
HI. We planned to occupy approximately 22 stations enroute from Kodiak
with higher resolution sampling across the transitional zone between
the northern North Pacific gyre boundery and sub-Arctic waters
approximately located between 35'N-45'N.
A single CTD cast was to be conducted at each station to collect
continuous profiles of various physical and chemical parameters. A
Fast Repetition Rate Fluorometer (FRRF) optical package was mounted on
the CTD rosette frame work for continuous profiling down to 250 m.
Water samples were to be collected at discrete depths for
biogeochemical measurements, and incubation experiments over the top
At predetermined co-ordinates XBTs or XCTDs were to be launched.
The following instruments were to collect data throughout the cruise:
FRRF, thermosalinograph, fluorometer, and anemometer.
The Hawaii Mapping Research Group (HMRG) component conducted continuous
multibeam mapping along the transect.
2. SCIENCE PERSONNEL
Karin Björkman Chief Scientist UH
Justine Afghan Scientist SIO
Bruce Applegate Scientist UH (HMRG)
Matthew Church Scientist UCSC
Tara Clemente Scientist UH
Lance Fujieki Scientist UH
Dan Sadler Scientist UH
Guido Corno Student OSU
Laurie Juranek Student UW
Tim McGovern UHMC/STAG
Kuhio Vellalos UHMC/STAG
3. GENERAL SUMMARY
Operations were hampered by inclement weather conditions for
approximately the first half of the cruise. The departure from Kodiak
was delayed 25 hours due to the weather. Out of the 22 planned
stations 17 were occupied, but only 12 were CTD stations. Five
stations were sampled from the uncontaminated seawater supply and the
other 5 stations were lost due to time constraints. Higher
resolution sampling for DIC and chlorophyll was conducted from the
uncontaminated seawater system as well as FRRF data.
J. Afghan launched 120 XBTs starting at the 200 m depth contour off
Kodiak Island and ending at the 200 m depth contour off Oahu, HI. The
XBTs were spaced approximately every 30 latitude N. In addition 6 XCTDs
were deployed at approximately 41', 46', 51', 54', 55'40 and 56'30 N.
J. Afghan experienced about 20% failures with the XBTs due to rough
seas that damaged some of the equipment. In addition there are gaps in
the data where she was unable to launch any XBTs.
L. Juranek collected samples for 18O and DIC.
M. Church collected DNA and RNA samples as well as samples for
K. Björkman collected samples for incubation experiments.
G. Corno collected data from the FRRF instruments, and did
experiments using a PAM.
Samples were also collected for Albert Coleman, Carnegie Institute,
for 18O determinations.
The HMRG component did multi-beam mapping throughout the transect.
The thermosalinograph and the ship's anemometer run without
interuptions. The fluorometer was reset on a couple of occasions.
We arrived to Snug Harbor, HI at 0730, 10 October, 2003
4. R/V KILO MOANA, OFFICERS AND CREW, TECHNICAL SUPPORT
The R/V Kilo Moana and her crew delivered excellent ship support for
our work. The officers and crew were helpful and accommodating. They
showed enthusiasm and concern for our work. Technical support during
this cruise was adequate. STAG personnel were available to assist in
the CTD deployments and retrievals.
5. ISOTOPE VAN
A post-cruise swipe test on 24 locations inside the van and in its
immediate vicinity came out clean.
6. DAILY REPORT OF ACTIVITIES (all times are HST unless otherwise stated)
September 29, 2003; Loading Day
Equipment and science supplies were loaded on this day. The majority of
our gear was already onboard from the April, 2003 cruise (KM0308). The
labs were set up.
September 30, 2003
The scheduled departure at 1330 (AST) was cancelled, and rescheduled
for the following day due to inclement weather.
October 1, 2003
Departed the US Coast Guard Station, Kodiak, at 1430 as scheduled.
Winds 15-20 knots. Ships speed 12-13 knots.
October 2, 2003
Came on station at 0600 and deployed the first CTD at daybreak at
54'N. The winch speed for the CTD/FRRF package was to be 10m/min for
both on the up and down cast to ensure high resolution profiling for
the FRRF. The cast was completed without problems.
When CTD 1 was on deck we commenced our transit to the next station.
Fire and abandon ship drills were conducted at 1230 hours.
Station 2 (52.2'N) was occupied from approximately 1700 to 1800
hours. Bottle #9 didn't trip.
The ship's clock was advanced 1 hour.
Winds 15-20 knots. Clear skies. Ship's speed 12-13 knots.
October 3, 2003
Occupied stations 3 at 49.9'N (0600 hours) and 4 at 47.6'N (1800
hours). At station 4, the weather was getting hard and the wire angle
was changing constantly making it difficult to trip bottles at the
October 4, 2003
The weather had deteriorated to a point were CTD operations were not
possible. The Captain declared heavy weather procedures to be in
effect. Station 5 at 45.3'N, 6 at 44.2'N and 7 at 43.5'N were sampled
from the uncontaminated seawater system for all parameters except for
incubation experiments. One of the incubators got hit and a large
piece of plastic was broken off. Portions of the catwalk metal
grating between the hulls in the bow was torn off by a wave.
October 5, 2003
Heavy weather procedures continued to be in effect for the day.
Continued to sample from the uncontaminated seawater system for
stations 8 (43.0'N) and 9 (41.4'N). The ship speed was down to 5-6
knots due to the seas and high winds.
October 6, 2003
The weather improved sufficiently to attempt a CTD cast. This was
station 10, CTD #5. Stations 11,and 12 also completed this day.
October 7, 2003
Completed Station 13 at 34.7'N and Station 14 at 32.25'N.
October 8, 2003
Completed Station 15 at 29.9'N and Station 16 at 27.4'N.
The ship's clock was advanced 1 hour.
October 9, 2003
Completed Station 17 at 25.3'N (0700 hours). Last station. Cleaned
and packed up the labs.
A final rad survey and swipes in the isotope van was done. Results
October 10, 2003
Arrived at the sea buoy off Honolulu Harbor at 0600, Docked at Snug
by 0730. Full off-load took place.
Below is the approximate daily wind direction, wind speed and
barometer. Wind direction in degrees, speed in knots, barometer in
Date Wind Wind Barometer
1 October, 2003 105-262 15-20 1000
2 October, 2003 160-206 10-15 1000
3 October, 2003 190-230 20-30 990
4 October, 2003 206-250 30-35 995
5 October, 2003 230-273 25-30 1018
6 October, 2003 230-340 20-30 1018
7 October, 2003 5-95 5-15 1024
8 October, 2003 85-95 15-20 1020
9 October, 2003 75-85 15-20 1017
David Karl HOT core sampling/UH
Paul Quay DI13C and O isotopes/UW
Ricardo Letelier optical measurements/OSU
Karin Björkman/Karl phosphorus cycling/UH
Matt Church/John Zehr leucine uptake, DNA and RNA isolation/UCSC
Glen Pezzoli XBT, XCTD work, transect P38/SIO
Albert Coleman 18O isotopic composition of phosphate in seawater