      CRUISE NARRATIVE: P17

A.1   Highlights

                        WHO Cruise Summary Information

         WOCE section designation  PR17
Expedition designation (EXPOCODE)  49SU9204_1
                 Chief Scientists  Nobuo SATO, Kobe Marine Observatory(KMO)
                     Cruise Dates  April 24 to April 30, 1992
                             Ship  R/V Shumpu Maru
                    Ports of Call  Kobe to Kochi
               Number of stations  12
                                                  31° 9.41'N
Geographic boundaries of stations  131° 29.49'E              133° 30.17'E
                                                 29° 29.39'N
     Floats and drifters deployed  0
   Moorings deployed or recovered  0


A.2   Cruise Summary

The cruise track and station locations of leg 1 are shown in Figure 1. The ship 
departed Kobe on April 24, 1992, and made 6 CTD/rosette stations of a section 
PR17. 6 XBT stations were made between CTD/rosette stations. To the first 
CTD/rosette station the ship reached at 1042 UTC on April 27, from the last 
station departed at 1802 UTC on April 28.

The CTD is EG&G NBIS Mark III B(6500 db type, no oxygen sensor). Water samples 
were collected from 1.7 liter Niskin bottles mounted on the General Oceanics
Rosette multisampler. However, surface water samples were collected by a 
bucket.

A.3   List of Principal Investigators

The principal investigators for all the parameters measured on the cruise are 
listed in Table 1.

Table 1: Principal Investigators for All Measurements


             Name                Responsibility         Affiliation
             -----------------------------------------------------
             Sukeyoshi TAKATANI  Oxygen, Nutrients, PH  KMO
             Ryohei OKADA        CTD, Salinity          KMO


1.4 List of Cruise Participants

The cruise participants for leg 1 are listed in Table 2.

Table 2: Cruise Participants for leg 1


             Name                Responsibility          Affiliation
             ------------------------------------------------------
             Nobuo SATO          Chief Scientist         KMO
                                 Oxygen, Nutrients, PH
             Ryohei OKADA        CTD Hardware            KMO
             Sukeyoshi TAKATANI  Oxygen, Nutrients, PH   KMO
             Hiroki SUZUKI       Oxygen, Nutrients, PH   KMO
             Yasushi TAKATSUKI   CTD Software, Salinity  KMO
             Shunta NAITO        Watch Stander           KMO
             Keiichi SATO        Watch Stander           KMO
             Jun OBATA           Watch Stander           KMO
             Yuto WAKIMOTO       Watch Stander           KMO



B Measurement Techniques and Calibrations

B.1 CTD

The CTD is EG&G NBIS Mark III B(6500 db type, no oxygen sensor). A HP 9000 
Series 300 model 330(Hewlett Packard) with a 4 MByte of memory was used as the 
primary data collection device. 

The temperature and pressure sensor were calibrated at the calibration facility 
of S¥E¥A CO., LTD before the cruise. The results are shown in Table 3. 
Temperature and pressure(increasing) calibration values are used to correct
CTD data, by linear interpolation inside the calibrated regime. CTD data 
outside of the regime is corrected by the calibration values on the boundary,
at the each side.

Notice that the upcast pressure data is corrected by Pressure(increasing), not 
Pressure(decreasing) in Table 3.


Table 3: The temperature and pressure sensor calibration values

              Temperature(Calibrated on January 31, pre-cruise)
              ------------------------------------------------
              Standard     CTD
              Temperature  Temperature  Difference
              ------------------------------------
               1.9726       1.9872      -0.0146
               3.5818       3.5966      -0.0148
               5.2368       5.2514      -0.0146
               7.4751       7.4903      -0.0152
              10.2274      10.2434      -0.0160
              12.5938      12.6111      -0.0173
              15.0394      15.0582      -0.0188
              20.1280      20.1500      -0.0220
              25.1896      25.2145      -0.0248
              30.1553      30.1818      -0.0265


              Pressure(increasing, Calibrated on January 31, pre-cruise)
              --------------------------------------------------------
              Standard  CTD
              Pressure  Pressure  Difference
              ------------------------------
                 0.0       4.5    -4.5
                98.0     102.1    -4.1
               293.9     297.8    -3.8
               489.9     494.3    -4.3
               979.8     986.2    -6.3
              1959.6    1966.6    -7.0
              2939.5    2944.1    -4.6
              3919.3    3921.3    -2.1
              4899.1    4899.8    -0.7
              5878.9    5879.7    -0.8


              Pressure(decreasing, calibrated on January 31, pre-cruise)
              --------------------------------------------------------
              Standard  CTD
              Pressure  Pressure  Difference
              ------------------------------
                 0.0       5.1     -5.1
                98.0     104.1     -6.1
               293.9     302.0     -8.1
               489.9     499.6     -9.7
               979.8     991.4    -11.6
              1959.6    1969.0     -9.3
              2939.5    2944.8     -5.4
              3919.3    3921.4     -2.1
              4899.1    4899.7     -0.6
              5878.9    5879.7     -0.8


The conductivity sensor were calibrated at sea using data from the analysis of 
salinity collected at 4 stations. The salinometer is AUTO-LAB model 1601 for 
the analyses of salinity of the water samples. The results are shown in Table 
4. The calibration constant is determined assuming that the bias 0.


Table 4: The conductivity sensor calibration constants

                                  Bias  Slope
                                  -------------
                                  0     0.99996


The temperature of "SU9204.SEA" and "SU????_?.CTD" files are described with the 
international temperature scale of 1990, ITS-90.

B.2 Oxygen Measurements

The determination of dissolved oxygen was done by the modified version of the 
Winkler method described in "Kaiyo Kansoku Shishin (Manual of Oceanographic 
Observation)" published by the Oceanographical Society of Japan(1970). No 
estimation of accuracy and precision and reagent blank has been done.

2.3 Nutrients Analyses

The nutrients analyses were done by the Technicon Auto Analyzer II described in 
"Kaiyo Kansoku Shishin (Manual of Oceanographic Observation)" published by the 
Oceanographical Society of Japan(1970). No estimation of accuracy and precision 
has been done.

2.4 PH measurements

The PH measurements were done by the PH meter(Denki Kagaku keiki co., ltd) 
described in "Kaiyo Kansoku Shishin (Manual of Oceanographic Observation)" 
published by the Oceanographical Society of Japan(1970). No estimation of 
accuracy and precision has been done. Notice that the order of measurements is 
0.01.

2.5 Notes for the SU9204.SUM, SU9204.SEA and SU????_?.CTD files

The first 2 characters of the file name of *.SUM, *.SEA and *.CTD files are SU 
for R/V Shumpu maru of Kobe Marine Observatory. These characters are followed by 
the last two digits of the year and the month for the *.SUM and *.SEA files. 
For the *.CTD files, the characters SU are followed by the unique station 
number and the cast number given by the Japan Meteorological Agency.

In "SU9204.SUM", we leave some position column blank(when bucket was used) 
because not recorded.

In "SU9204.SEA", we leave "sample number (SAMPNO)" column of the surface layer 
blank, because of using bucket.

All water sample quality flags during this cruise were "3"(or "4","5","9"), 
because no estimation of accuracy and precision has been made.

In "SU????_?.CTD", we gave the value -9 to "NUMBER OBS.", because we lost the 
CTD raw data and data number of the observation stations when the earthquake 
was occurred in Kobe, Japan, on January 17, 1995.


WHPO SIO Data Processing Notes


Date      Contact         Data Type     Data Status  Summary  
------------------------------------------------------------------------------
10/20/99  Bartolacci      CTD/BTL/SUM   Submitted  being reformatted by 
          s.anderson  
          
8/4/00    Saiki  CTD/BTL  Data are Public    I am pleased to inform you that 
          the PIs and participants of the one-time and repeat cruises conducted 
          by the Japan Meteorological Agency's vessels agreed to change most of 
          the data status to public.
          
08/18/00  Bartolacci      CTD/BTL       Website Updated  data unencrypted, need 
          minor reformatting  CTD, Bottle

          These cruises' bottle and ctd files have been unencrypted and made 
          public. All index pages have been updated to reflect this change, and 
          all these files still need minor reformatting.
          
05/21/01  Bartolacci      SUM           Data Reformatted/OnLine  See Note:  
          SUM: Aligned all data columns to conform to WOCE format.
          Added fourth header line (dashed line)
          Capitalized all header parameters.
          Edited all header parameters to correspond to WOCE format. (i.e. 
          changed CRUISE/LEG to SHIP/CRS)
          Removed hard carriage returns.
          Added date/name stamp.
          Ran sumchk with only warnings due to missing latitude/longitudes for 
          many casts.  It appears that only one lat/lon was taken  for each 
          station, even though many casts were conducted per station.

05/21/01  Bartolacci      BTL           Data Reformatted/OnLine  See Note:  
          BOT: Inserted -9 for all missing bottle numbers in the BTLNBR column.
          Inserted -9.0 for all missing ctd raw pressures in the CTDRAW column. 
         (i.e. changed .7549 to 0.7549)
          Removed hard carriage returns.
          Added name/date stamp.
          Ran wocecvt with warnings pertaining to missing lat/lon within 
          sumfile.

06/18/01  Uribe           CTD           Website Updated  CSV File Added, 
          sumfiles need gaps filled, see note:  CTD was converted to exchange 
          format. New files were put online. Sumfiles needed to go through 
          fix_sum_file.pl to fill in data gaps in order to run exchange code.
          
11/16/01  Diggs           CTD           Update Needed  CTD needs major 
          corrections, see note:  CTD files (WHP format) needed major 
          corrections in order to be translated into CTD-Exchange type files. 
          Among the changes were making the header lines in each CTD-WHP files 
          correctly aligned, changing the incorrect DEG C to the correct single 
          word DEG_C, and removing the control-Zs from the last line of each 
          CTD-WHP file.

          In addition, the sumfile was incorrectly formatted with many lines 
          missing either lat-lon and/or time-date values. These lines were 
          removed from the temporary sumfile used to make the exchange files 
          since they didn't correspond to any of the original WHP-CTD files. 
          Original, unchanged sumfile is still online, but the WHP-CTD zip 
          archive is now updated with the format-corrected versions as is the 
          zip archive of the CTD-Exchange files.
          
11/29/01  Uribe           CTD           Website Updated  New CSV File Added  
          CTD has been converted to exchange using the new exchange code and 
          put online. Only cast 1 was used for the conversion and the latitude 
          and longitude values missing were replaced with other values from the 
          same station.
          
          

