HOT-113: Chief Scientist Report

Chief Scientist: L. TUPAS

Vessel: R/V Ka'Imikai O' Kanaloa
Loading: March 24, 2000			
Departed: March 27, 2000 at 0900	
Returned: March 30, 2000 at 1700

Chief Scientist: Dr. Louie Tupas	
Master: Captain Robert Hayes
Deck Operations: Mr. Dave Gravatt	
Electronics Technician: Mr. Will Hervig

1.	SCIENCE PERSONNEL

	Luis Tupas - UH, scientist
	Dale Hebel - UH, scientist
	Karin Bjorkman - UH, scientist
	Terry Houlihan - UH, research associate
	Lance Fujieki - UH, computer specialist
	Dan Sadler - UH, research associate
	Don Wright - UH, research associate
	Fernando Santiago-Mandujano - UH, research associate
	Mark Valenciano - UH, marine technician
	Colleen Allen - UH, research associate
	Tom Gregory - UH, research associate
	Jeremiah Johnson - UH, research associate
	Michelle Eich - UH, graduate assistant
	Lal Ratnapala - UH, graduate assistant
	Matt Church - VIMS, visiting graduate student
	Albert Coleman - Yale, visiting graduate student
	Regina Bruhn - Baltic Sea Research Institute, scientist
	
2.	GENERAL SUMMARY

All objectives of the JGOFS and WOCE programs were. All planned
stations were occupied. Weather and sea conditions were rough but
within limits of safety for deck operations. All core samples were
taken and the 36 hour CTD burst sampling period was not interrupted.
All samples for ancillary projects were taken. Guest scientists and
students were able to accomplish their work. Floating sediment trap
array and primary production array deployed and recovered successfully.
No samples were lost during the in-situ incubations. ADCP measurements
were made throughout the cruise. There was no HALE ALOHA station
because the mooring has not yet been deployed.


3.      R/V Ka Imikai O Kanaloa, OFFICERS AND CREW, TECHNICAL SUPPORT

Ship's crew gave excellent support and showed enthusiasm and concern
for our work and were very flexible in receiving changes in our
operational schedule and logistical support. Technical support during
this cruise was excellent. STAG personnel were available at any time to
assist in our work and made things much easier for us. During the
cruise, email was not reliable but the skyphone made it possible for us
to retrieve the satellite positions of the sediment trap.


4.	DAILY REPORT OF ACTIVITIES

March 24, 2000; Loading Day

The ship's main deck was configured for HOT equipment. The main lab van
and the rope winch were secured inside the submarine hangar. The
equipment van and second radiation van were secured on the O-2 deck.
All deck and lab equipment were loaded and secured within the ship's
labs. All electrical and electronic connections were made for the CTD.
All other equipment and containers were stowed away and secured. All
laboratory instruments were tested and appeared functioning. No
problems were encountered.

March 27, 2000

We departed Snug Harbor at 0900. Fire and abandon ship drills were held
at around 0930. We arrived at Station Kahe at 1130. Upon arrival the
PRR was deployed and retrieved. The TSRB was not functioning. Attempts
were made to repair it on-board ship. CTD cast started at 1300. Work at
Station Kahe was accomplished by 1600 and the ship proceeded to Station
ALOHA.

March 28, 2000

Ship arrived at Station ALOHA at 0100. Two net tows were successfully
completed. Floating sediment traps were successfully deployed at 0200.
The deep CTD cast was made  at around 0400 and the burst series
commenced at 0900. Regina Bruhn commenced with hose pumping at the
beginning of the deep cast. Pumping was done as often as possible while
the ship was not maneuvering. Net tows and the light casts were
accomplished around noon and night. TSRB was still not working.

March 29, 2000

Work continues as scheduled. Net tows conducted at 0100. Go-Flo cast
commenced at 0200 with some difficulty. The morning shift completed the
water sampling. Primary production experiment made from Go-Flo cast and
CTD rosette water. Matt Church and Karin Bjorkman added incubation
samples to the array. Primary production experiment was deployed
without incident at 0500. At noon we did optical measurements as
scheduled for the satellite overflight times at Station ALOHA. Net tows
successful. Primary  production experiment retrieved at 1900 and all
samples processed shortly after. CTD casts continue at 3 hour
intervals.

March 30, 2000

Work has been proceeding as scheduled without any problems. Second WOCE
deep cast started at 0000 and completed at 0400. We received the ARGOS
positions by email. We had planned to remain on station until 0600 for
Regina Bruhn to complete her pump sampling. She lost her hose at around
0400 and she terminated her pumping then. She continued to collect
water samples using the clean seawater intake system.  Ship proceeded
to the trap location and traps retrieved at 0700. Ship then proceeded
to Honolulu. We arrived at Snug Harbor at 1700.

March 31, 2000; Unloading

Unloading commenced and completed at 1200.


SAMPLES TAKEN FOR OTHER INVESTIGATORS

1. DIC water samples for Charles Keeling, SIO-UCSD
2. DIC water samples for Paul Quay, UW
3. Seawater for Ted Walsh, UH
4. Phosphorus experiments by Karin Bjorkman, UH
5. Aerosol and ozone measurements for J. Porter by Jeremiah Johnson, UH
6. Microbial sampling and experiment by Matt Church, UH
7. Phosphorus sampling by Albert Coleman, Yale
8. Phosphorus sampling Claudia Benitez-Nelson by Tom Gregory, UH
9. PCB sampling by Regina Bruhn, Baltic Sea Res. Inst.