Hawaii Ocean Time-series (HOT)
in the School of Ocean and Earth Science and Technology at the University of Hawai'i at Manoa
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HOT-27: Chief Scientist Report


Chief Scientist: R. LUKAS


                          Cruise Summary
                              HOT-27
                                 
                   Leg 1: 3 June - 6 June, 1991
                   Roger Lukas, Chief Scientist
                                 
                   Leg 2: 8 June - 9 June, 1991


Personnel List

Roger Lukas, Chief Scientist
Chris Carrillo
Terrence Houlihan
Jef Snyder
Chris Sabine
Dale Hebel
John Dore
Lance Fujieki
Craig Moyer
Fernando Santiago-Mandujano


Summary

HOT-27 was conducted on R/V ALPHA HELIX in two parts.  ALPHA HELIX
departed from Snug Harbor for Leg 1 at 0945 HST on 3 June, 1991, and
returned approximately 1030 on 6 June.  Leg 2 departed from Snug Harbor
at 1200 on 8 June and returned to Snug Harbor at 1200 on 9 June.

The weather was generally good, with light easterly trade winds
prevailing.  Occasional rain squalls were encountered, and the first
two days of Leg 1 were fairly cloudy.

The work went smoothly on Leg 1.  All scheduled casts were done, and
the sediment traps were deployed without mishap.  The primary
productivity cast took a bit longer than normal due to pre-tripping of
the go-flos on the first attempt.  The in situ array was deployed and
recovered with no problems.  Some net tows were conducted between
hydrographic casts.

The sediment traps were recovered on Leg 2 at approximately 0100 on 9
June. With the exception of a mishap on the part of the ship's crew
crane operator, the sediment trap recovery went very smoothly. The
crane operator's error resulted in the headache ball falling from the
crane onto the ship deck. Fortunately, no one was injured when the
ball hit the deck.

A new spar buoy recovery strategy was used on Leg 2. This strategy
involved tying the top of the spar buoy to the deck before lifting the
spar out of the water. This resulted in the spar buoy being lifted onto
the deck in a horizontal position and made for a much smoother
recovery.  We will employ this strategy as much as possible on future
cruises.

One PNF cast was conducted at Kahe point and four at Station ALOHA.
LICOR data were logged on 4 June through 6 June.