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.