HOT-122: Chief Scientist Report

Chief Scientist: D. HEBEL

HOT 122 Cruise Report
R/V Kaimikai O Kanaloa 
15-19 Jan., 2001


Personnel List

HOT 122:
WOCE group:
Fernando Santiago-Mandujano* 		Research Associate			UH
Lal Ratnapala             		Graduate Assistant              	UH
Mark Valenciano				Electronic Technician			UH
Jeremiah Johnson			Research Associate			UH
Noel Larson				Research Associate			UH
Jorgen Olsen				Graduate Student			UH

JGOFS group:
Dale Hebel              		Chief Scientist (co-PI JGOFS)  		UH
John Dore*				Scientist				UH
Colleen Allen				Research Associate 			UH
Anne Gasc				Scientist 				UH
My Christensen				Research Associate			UH
Ceclia Sheridan				Graduate Student			UH

Associated projects
Tom Gregory				Research Associate			UH
Roberta Hamme				Graduate Student			UW


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

*Watch Leader


Cruise Events (approximate HST):

Monday, 15 Jan.
0905	Departed Snug Harbor 
0930	Fire/abandon ship drill, science meeting    
1145	Arrived Kahe Pt. (Sta. 1)
1200 	Weight cast (1000 m)
1245    PRR cast 
1335    s1c1
1440    Depart Kahe
1730    Arrive sta. 6 Kaena
1750    s6c1 (2500m)
1940	Departed sta. 6

Tuesday, 16 Jan.
0135	Arrived Sta. ALOHA (sta. 2) 	
0145 	Net tow
0225	Began sediment trap deployment
0310	Completed sediment trap deployment (22o 45.7N, 158o 00.2W)
0320	s2c1 (WOCE deep)
0635	s2c1 on deck
0810	s2c2 (WOCE shallow) 
0955  	Net tow
1030	Net tow 
1100	s2c3
1200	PRR-600 cast
1250	Net tow
1325	Net tow	 
1400	s2c4
1505	in situ pumping
1620	in situ pump on deck
1700	s2c5
2200	s2c6 
2145    Net tow
2245	Completed net tows (2)
2300	s2c7

Wednesday, 17 Jan.
0025	Net tow
0100	Net tow
0140	Net tow	
0205	s2c8
0500	s2c9
0640	Deployed primary productivity array (22o 44.7N, 157o 59.7W)
0805	s2c10
1000	Net tow
1100    Completed net tows (2?)
1105	s2c11
1200    PRR-600 cast
1400	s2c12
1505	in situ pump (in)
1645	in situ pump (out)
1700	s2c13
1840	Recovered PP array
2000    s2c14 (2000m)
2300    s9c1  (water mass anomaly spatial survey)

Thursday 18 Jan.

0100	s10c1
0230	s11c1
0340	s12c1
0500	s13c1
0600	s14c1
0740	s15c1
0820	Transit sediment traps 
0900	Arrived sed. traps 
0955	Completed sed. trap recovery (22o 45.9N, 158o 08.5W)
1005	s16c1
1140	s17c1
1330	s18c1
1445	s19c1
1525	Transit HALE ALOHA
1735	Arrived HALE ALOHA
1740	s8c1
1840	Departed sta. 8

Friday 19 Jan.
0730	Arrive Snug Harbor 
 

Narrative:
HOT 122 was conducted aboard the R/V Kaimikai O Kanaloa (KOK), 15-19
Jan., 2001.  Captain Ross Barnes was the master of the vessel and Dale
Hebel chief scientist.  There was a total of 16 participants in the
scientific party composed of 6 WOCE, 6 JGOFS, 2 ancillary and 2 STAG.
We departed Snug on 15 January occupying stations at Kahe Pt. (sta. 1),
Station ALOHA (sta. 2), HALE ALOHA (sta.  8) and Kaena Pt. (sta. 6).
All scheduled work was completed and all samples collected. CTD
operations were conducted at stations 1, 2, 6, 8-19.  One ~1000 m CTD
cast was conducted at stations 1 & 8 and ~600 m at stations  9- 19.  At
Station ALOHA 11 ~1000 m, one ~2000 m and one ~4800 m CTD casts were
completed while one ~2500m CTD cast was done at Kaena Pt. (sta.6).
Other over-the-side operations at Station ALOHA included 3 light casts
(PRR only), 10 net tows, 2 in situ pumping operations,  floating
sediment traps and primary productivity measurements.  All operations
followed previous cruise routines with the exception of no TSRB casts
and a spacial survey (stations 9-19), of an anomalous salinity/oxygen
feature at about 400m.  The underway/continuous thermosalinograph,
ADCP, and fluorometer were operable and functioned properly. WOCE met.
obs and limited ship met. data were collected as well as discrete
aerosol measurements on 15,16 & 18 Jan.  Overall the weather was mostly
sunny (although we did experience periods of  light rain), with
generally calm seas and light Trade winds.  Daily activities are listed
above under Cruise Events.


Weather
HOT 122:
The weather was mostly sunny with light winds and generally calm seas,
however, we did experience a large swell from the NNW midway through
the cruise.  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 oF (dry bulb) and clouds
in tenths.

Day Date       Wind            Sea     	    Swell    	  Barometer    	Temp	Clouds

Mon 15 Jan.    075-110,10-20   075-110,2-3  120-340,2-5	  30.00-30.10	74-83	3-4	
Tues 16 Jan.   115-130,7-15    115-130,2-3  330,3-4	  30.02-30.09  	73-78	1-10	
Wed 17 Jan.    090-135,6-14    090-135,1-2  310-330,6-15  30.04-30.10  	73-78	1-4	
Thur 18 Jan.   095-130,12-15   095-130,2-3  310,8-12	  30.05-30.12	73-80	1-4	
Fri. 19 Jan.*  065,11	       065,2        120-310,2-8   30.09-30.10	73	2-4	

*Two entries  (0200 & 0600  hrs)




Equipment and methods:
All standard equipment functioned properly.  Due to the large swell a
kink formed in the CTD cable requiring retermination.
	 

Sub component programs:

Investigator:               		Project:
-----------------              		----------
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
CBN					phosphorus isotopes,Th234/UH

Students:
Roberta Hamme				O2/N2/Ar dynamics
Others:
Hebel, Dore, Karl			EOC /UH
Karin Bjorkman				phosphorus experiments/UH


Notable events:
1. Salinity/O2 anomaly
2. No TSRB casts
3. Calm weather with large swell

[DH2] Need to update with h122 info 
Need to update with current data