Hawaii Ocean Time-series (HOT)
in the School of Ocean and Earth Science and Technology at the University of Hawai'i at Manoa


HOT-112: Chief Scientist Report


Chief Scientist: D. HEBEL


HOT 112 Cruise Report
R/V Kaimikai O Kanaloa 
28 Feb.- 3 Mar., 2000


Personnel List

HOT 112:

WOCE group:
Fernando Santiago-Mandujano* 	Research Associate			UH
Michele Eich             	Research Associate              	UH
Mark Valenciano			Electronic Technician			UH
Don Wright			Research Associate			UH

JGOFS group:
Dale Hebel              	Chief Scientist (co-PI JGOFS)		UH
Louie Tupas*			Scientist (co-PI JGOFS)  		UH
Lance Fujieki			Computer Specialist			UH
Karen Bjorkman 			Postdoc					UH
Colleen Allen			Research Associate 			UH
Terry Houlihan 			Research Associate 			UH
Matt Church			Visiting Graduate Student 		UH


Associated projects
Tom Gregory			Research Associate			UH
Jeremiah Johnson 		Research Associate			UH
Pati Turner			Research Associate			UCSC 

			
STAG
Steve Poulos               	Electronic Technician       		UH-UMC
Dave Gravatt             	Deck Technician              		UH-UMC

* Watch Leader




Itinerary (approximate HST):
------------------------------

Monday, 28 Feb.
0900	Departed Snug Harbor 
0925	Fire/abandon ship drill, science meeting    
1140	Arrived Kahe Pt. (Sta. 1)
1200 	Weight cast (1000 m)
1245	PRR/TSRB casts 
1315  	s1c1
1425 	Departed Kahe
2355 	Arrived Sta. Aloha (Sta. 2)



Tuesday, 29 Feb.
0010	Net tow
0040	Net tow
0130	Began sediment trap deployment
0220 	Completed sediment trap deployment (22o 46.15'N, 157o 57.13'W)
0300	s2c1(WOCE deep)
0800	s2c2
1000  	Net tow 
1100 	s2c3 (fluorometer problem - cast aborted)
1130 	s2c4
1225	PRR-600/TSRB cast
1300	Net tow
1335  	Net tow	 
1405	s2c5
1505 	in situ pump (in)
1620 	in situ pump (out)
1700 	s2c6
2000 	s2c7
2200	Net tow 
2235	Net tow
2300 	s2c8


Wednesday, 1 Mar.
0020	Ship lost control both main engines
0130	Port main eng. on line
0215	Starboard main eng. on line (A motor only)	
0225	s2c9
0320  	Go-Flo cast	
0500	s2c10
0710	Deployed primary productivity array (22o ?N, 158o ?W)
0800	s2c11
1000 	Net tow
1035 	Net tow
1100 	s2c12
1200 	PRR-600/TSRB cast
1300	Net tow
1400	s2c13
1505 	in situ pump (in)
1620 	in situ pump (out)
1700	s2c14
1900	Recovered PP array
2000 	s2c15 
2300	s2c16 (second WOCE deep cast)

Thursday 2, Mar.
0215	CTD on deck
0220	Transit sediment traps strobe
0300	Visual sighting of ST strobe light
0610	Ch. Eng. reported strb SCR repaired  
0645	Initiated trap retrieval 
0730	Completed sed. trap recovery/transit Honolulu
1730 	Arrived Snug Harbor

Friday 3, Mar.
0800	Offloading HOT 112 
1100	Completed offloading 


Narrative:
-------------

HOT 112 was conducted aboard the R/V Kaimikai O Kanaloa (KOK), 28
February to 3 March, 2000.  Captain Hayes was the master of the vessel
and Dale Hebel chief scientist.  There was a total of 16 participants
in the scientific party composed of 4 WOCE, 7 JGOFS, 3 ancillary and 2
STAG.

We departed Snug on 1 February occupying stations at Kahe Pt. (sta. 1),
and Station ALOHA (sta. 2).  All scheduled work was completed and all
samples collected with the exception of two net tows due to engine
problems. CTD operations were conducted at stations 1 & 2.  One ~1000 m
CTD cast was conducted at station 1, with 14 ~1000 m CTD casts at
Station ALOHA and 2 near-bottom deep casts (~4750 m).  S2c3 was aborted
due to a faulty fluorometer, which stopped working for no apparent
reason.  Other over-the-side operations included 3 light casts, 10 net
tows, 2 in situ pumping operations, 1 Go-Flo cast, floating sediment
traps and productivity operations.  All operations were routine with
the exception of additional net tows for C. B. Nelson, a rosette Go-Flo
primary productivity experiment comparison, collection of atmospheric
particulate material, in situ pump operations and rosette/go-flo
primary production comparison.

The underway/continuous thermosalinograph and ADCP were operable and
functioned properly.  No continuous pCO2 or fluorometry were measured
on HOT 112 as well as limited meterological instrumentation. Overall
the weather was partly cloudy with moderate to rough seas.

The cruise schedule was very similar to HOT 111 with the exception of
HOT 112 engine problems, net tow cancellation, s2c3 fluorometer
problem; and inclusion of HPLC cast with the final WOCE deep cast on
HOT 111.  Therefore, for those interested please see HOT 111 Cruise
Report for generic daily activity narrative (applicable dates Feb. 1-4,
2000).





Weather
-------

HOT 112:
The weather was variable with partly cloudy skies and moderate-rough
seas at the beginning of the cruise and moderate-strong winds
decreasing to moderate conditions towards the end.  Below is listed the
cruise bridge log descriptions and the various values representing the
range for that day.  Under wind, sea, and swell there will be two
designations, the first is the direction (in degrees), the second for
wind is in kts, sea in Beauford force, and swell in feet, barometer in
inches of Hg, temp oC (dry bulb) and clouds in tenths.

Day Date      Wind     	     Sea     	  Swell    	Barometer    Temp   Clouds

Mon 28 Feb.   085-125,20-22  085-125,3    90-120,3-4	29.96-30.02  73-81  3
Tues 29 Feb.  085-100,17-18  080-100,3 	  310,4-5  	29.97-30.04  69-79  2-7
Wed 1 Mar.    070-120,15-25  070-120,3-4  110-310,5-10 	29.97-30.02  71-80  3-8
Thur 2 Mar.*  100-260,5-22   100-260,1-4  110-310,2-6 	29.97-30.05  72-79  4-8

*Three entries  (0200, 1000 & 1400 hrs)




Equipment and methods:
----------------------
All standard equipment functioned properly with the exception of the
flash fluorometer.


Sub component programs:
-----------------------

Investigator:               	Project:
-------------              	----------
Christopher Winn (UH)       	DIC, pH, Alk., pCO2/UH
Bob Bidigare (UH)           	HPLC pigments/UH
Michael Landry (UH)     	zooplankton dynamics/UH

Ancillary programs:
-------------------

Investigator:               	Project:
-----------------              	----------
Charles Keeling (SIO)       	CO2 dynamics and intercalibration/SIO
Paul Quay (UW)          	DIC and 13C/UW
John Porter			aerosols/UH
Abbott/Letelier			optical measurements/OSU
Claudia B.-Nelson		Natural abundance studies Phosphorus isotopes/UH
John Zehr			Bacterial genome studies/UCSC


Students:
---------
Matt Church			DOC/bacterial dynamics/UH 

Others:
-------
JGOFS personnel			EOC, 1 prod. comparison/UH
Karin Bjorkman			phosphorus experiments/UH