WFP Ref. No.: PR4, PR2
Last Updated: February 9, 1996

A.	Cruise Narrative

A.1	Highlights

A.1.a	WOCE designation	PR4, PR2  
				 

A.1.b	EXPOCODE		49RY9006/1
				49RY9006/2
				49RY9006 /3

A.1.c	Chief Scientist		Michio Hirota,
                        	Japan Meteorological Agency,
                        	1-3-4, Otemachi, Chiyoda-ku,
                        	Tokyo 100, Japan

A.1.d	Ship			R/V Ryofu Maru
	
A.1.e	Ports of call		Leg 1: Tokyo, Japan to Rabaul, Papua New Guinea
          			Leg 2: Rabaul, Papua New Guinea to Cebu, 
				       Republic of the Philippines
          			Leg 3: Cebu, Republic of the Philippines to 
				       Tokyo, Japan
 
				 
A.1.f	Cruise dates		Leg 1: June 14, 1990 to June 30, 1990
          			Leg 2: July 3, 1990 to July 14, 1990
          			Leg 3: July 20, 1990 to August 3, 1990

A.2	Cruise Summary Information

A.2.a	Geographic boundaries

A.2.b	Stations occupied

Observations of PR4 were carried out as part of the R/V Ryofu
Maru cruise RY9006 Leg 1, and those of PR2 were Leg 2 and Leg 3.

A total of 35 CTD/rosette stations for PR4 and 33 stations for PR2 was 
occupied using a General Oceanics 12 bottle rosette equipped with 12 
1.7-liter Niskin water sample bottles, and an NBIS MK III B CTD. No 
additional sensors were used with the CTD system.

Sampling
          
The following water sample measurements were made:
salinity, oxygen, nitrate, nitrite and phosphate on all stations. 
The depths sampled were: 10, 25, 50, 75, 100, 125, 150, 175, 200,
250, 300, 400, 500, 600, 700, 800, 900, 1000, 1250, 1500, 2000,
2500, 3000, 4000 in meters at every 5 degrees in latitude. On other
stations, water samples were taken at shallower depths than 1250m.
Surface water samples were collected by a bucket at every station.
 

A.2.c	Floats and drifters deployed

A.2.d	Moorings deployed or recovered

 
A.3	List of Principal Investigators

          The principal investigators responsible for each 
parameter measured on the cruise are listed in Table 1. (All the
correspondence on these data should be addressed to the Director
of the Oceanographical Division, Marine Department, Japan
Meteorological Agency.)   


          Name                  Responsibility           Affiliation

          H. Minami             CTD, S                   JMA/MD
          K. Fushimi            O2, Nutrients            JMA/MD

          JMA/MD  Marine Department, Japan Meteorological Agency

  
A.4	Scientific Programme and Methods


 
A.5	Major Problems and Goals not Achieved 

 
A.6	Other Incidents of Note

A.7	List of Cruise Participants