WHP Ref. No.: IR1W
Last updated: 27 July 1995

A.	Cruise Narrative

A.1	Highlights

A.1.a	WOCE designation	IR1W
A.1.b	EXPOCODE		3175MB95/3
A.1.c	Chief Scientist		Robert Molinari
				Physical Oceanography Division
				Atlantic Oceanographic and 
				Meteorological Laboratory
				4301 Rickenbacker Causeway
				Miami, FL  33149
				Internet: molinari@ocean.aoml.er1.gov
				Phone: 305-361-4344
				Fax: 305-361-4449
A.1.d	Ship			R/V Malcolm Baldrige
A.1.e	Ports of call		Depart Muscat, Oman
				Arrive Male, the Maldives
				Depart Male, the Maldives
				Arrive Mahe, the Seychelles
A.1.f	Cruise dates		Depart 31 May 1995
				Arrive 20 June 1995
				Depart 21 June 1995
				Arrive 30 June 1995
	
A.2	Cruise Summary Information

A.2.a	Geographic boundaries
A.2.b	Stations occupied
	CTD:	      31 Stations
	Lowered ADCP: 92 stations taken concurrently with the CTD 
		      Observations

	Niskin Bottle water samples:  Except for misfires, shallow
	stations and stations occupied towards the end of the leg, 24
	bottles were tripped at each CTD station.

	XBT's: 31 stations

	Continous shipboard Acoustic Doppler Current Profiler

	Continous thermosalinograph measurements

	Continous pCO2 underway measurement

A.2.c	Floats and drifters deployed
NONE

A.2.d	Moorings deploued or recovered

NONE

A.3	List of Principal Investigators

A.4	Scientific Programme and Methods

Equipment and Operational summary:

The new Sea-Bird CTD performed well throughout the cruise.  There was 
a drift in the conductivity sensor to fresher values durin gthe curse 
of the curise (order of .003 to .004 psu).  The oxygen sensor failed 
abut half way through the cruie and was replaced with no additional 
problems.  The rosette also wored flawlessly as did the LADCP after 
some early  battery problems.  No difficulties were experienced with 
the oxygen analysis system.

Operationally, we exceeded the project requirements in the number of 
stations occupied.  We deleted three stations along I1n in the Arabian 
basin.  At the time we were some two days behind schedule becasue of 
the weather and sea state slowing operations.  However, east of the 
Maldives both moderated and on the flank of the Carlsberg Ridge and 
across the equator.  Equally important to adding stations, was the 
fact that all stations produced high quality CTD and LADCP data.  

A.5	Major Problems and Goals not Achieved

The only significant equipent problem experienced durng the cruise was 
with the two AUTOSALS (AMC's and AOML's).  We began the cruise using 
the AOML unti.  Typically, out of a 24 bottle cast there were 4 or 5 
samples that produced salinities that were some .002 to .004 high, as 
indicated by comparison to the CTD and T-S plots.  After many attempts 
to isolate the problem, checkin gbottle O-rings, valves, etc.; 
rearranging the order of bottle firing; julti-firing bottles at the 
same depth: etc., we switched to the AMC unti.  However, the problem 
persisted. 

After leaving the maldives, Gregg Thomas noticed that the bath 
thermometer, which is not connected electricallt to the AUTOSAL, would 
jump at the same time as moisy AUTOSAL values occured (noisy defiend 
as an inability to get three stable AUTOSAL values).  The jumps 
implied a bath temperature change that was not possible over the time 
of the observed noise.  The ship's ET and Dave Bitterman checked the 
grounding of the problems found.  The AUTOSAL was then connected to a 
separate UPS in an attempt to isolte it from other electronics.  
Unfortunately the problem continues.  Suggestions from the laboratory 
and Guildline did not resolve this intermittent problem before the 
end  of this cruise.  We will ship the AOML AUTOSAL to England for 
mainternance and repairs in the Seychelles to insure a working unti 
for I8n.

Fortunately, there are sufficient good bottle salinities to perform an 
accurate (i.e., to within WOCE specifications)  calibration of the CTD 
conductivity sensor.  In particular, the drift observed in the CTD 
salinity values can be corrected.

A.6	Other Incidents of Note

A.7	List of Cruise Participants

 	Name					Affiliation
	----------------------------------------------------
	Dr. R. Molinari		Chief Scientist	AOML/PhOD
	Mr. D. Bitterman			AOML/PhOD
	Mr. G. Berberian			AOML/OCD
	Mr. G. Thomas				AOML/PhOD
	Mr. R. Smith				AOML/META
	Lt. S. Tosini				AOML/PhOD
	Ms. C. Walter				UM/CIMAS
	Mr. L. Moore				AOML/OCD
	Mr. T. Lantry				AOML/OCD
	Mr. X. Chen				AOML/OCD

	Dr. L. Ballance				NMFS/SWFC
	Mr. R. Pitman				NMFS/SWFC
	Mr. M. Force				NMFS/SWFC
	---------------------------------------------------

	AOML			Atlantic Oceanographic and 
				Meteorological Laboratory

	PhOD			Physical Oceanography Division

	OCD			Ocean chemistry Division

	META			Maria Elena Torano Associate Inc.
				1000 Brickell Avenue
				Miami, FL  33131

	UM			University of Miami
				4600 Rickenbacker Causeway
				Miami, FL  33149

	CIMAS			Cooperative Institue of Marine
				Atmospheric Science

	NMFS			National Marine Fisheries
				Service

	SWFC			Southwest Fisheries Science Center
				8604 La Jolla Shores Drive
				La Jolla California 92307


