HOT-16: Chief Scientist Report

Chief Scientist: D. KARL

HOT-16 Cruise Report
R/V Wecoma
11-15 Apr. 1990 



Personnel List:
---------------

David Karl		UH
Max Cremer		UH
Fred Dobbs		UH
John Dore		UH
Dale Hebel		UH
Ricardo Letelier	UH
Roger Lukas		UH
George Parish		UH
Stewart Reid		UH
Marc Rosen		UH
Jef Snyder		UH
Chuck Stump		UW



Cruise Schedule:
----------------

11 April (Wednesday)

0800	ETD Honolulu
1100	ETA Kahe Pt. Station
1400	ETD Kahe Pt. Station
2400	ETA ALOHA Station

12 April (Thursday)

0000	Deploy sediment traps
0200	Begin WOCE deep hydrocasts
1300	Light profile
1400	Continue CTD casts

13 April (Godd Friday the 13th!!)

0300	Primary productivity cast
0500	Deploy primary productivity array
0600	Continue CTD casts
1200	Locate primary productivity array
1300	Continue CTD casts
1800	Locate and recover primary productivity array
2000	Continue CTD casts

14 April (Saturday)

2000	Locate sediment trap array
2100	Recover sediment trap array
2200	ETD ALOHA Station

15 April (Sunday)

0800	ETA Snug Harbor		HAPPY EASTER !!!



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

HOT-16 departed Snug Harbor at 0900 on 11 April 1990 aboard the R/V
Wecoma. Samples were collected at Kahe Point and regular sampling work
was conducted at Station ALOHA. The ship returned to Snug Harbor at
approximately 1800 on April.


WOCE & JGOFS Sampling

All WOCE & JGOFS primary sampling was complete on this cruise.


CTD and XBT Operations

There were no CTD problems on this cruise. No XBTs were deployed.


Primary Production and Sediment Trap Measurements

Primary production was measured during 12-hour in situ incubations and
during 24-hour on-deck incubations. Sediment trap samples were obtained
without significant problems.


Optical Measurements

Optical casts were completed at Kahe Point.


Ancillary projects

Samples for dissolved gases were collected for Charles Keeling of
Scripps and for Steve Emerson and Paul Quay of the University of
Washington.