Hydrographic data consist of 4 types of records: HEADER-1, HEADER-2, HEADER-3 and DATA. HEADER-1 represents the cruise information. HEADER-2 and HEADER-3 represent station information and remarks, respectively. DATA include observation data at the station.
The data files are composed of HEADER-1 and station data groups. HEADER-1 is always located at the beginning of the file. The station data groups are composed of HEADER-2, HEADER-3 and DATA. The character '@' on the "REC_IND" of DATA represents the end record of the station data group.
| Element | Start Position | Field Type | Description of Field |
|---|---|---|---|
| FORMAT CODE | 1 | A4 | Format Code of the file: 'E2.1' or 'E2.2' |
| CRUISE NO | 6 | I4 | Cruise number identified with the year and the month. |
| PERIOD | 11 | 2(2I2,1X) | Date of beginning and end of the observation. |
| AREA | 21 | A98 | Observation area. |
| NO OF STN | 119 | I4 | Number of stations. |
| SHIP CODE | 124 | A2 | SHIP CODE (listed in Table) |
| REC_IND | 126 | A1 | '@' |
| Element | Start Position | Field Type | Description of Field |
|---|---|---|---|
| STATION NO | 1 | A3,I4 | Staion number given by the ship code suffixed with four digits consective numbers. |
| LATITUDE | 9 | I2,1X,I2,I1,A1 | Degrees, minutes and tenths of minutes (if given) of latitude, N or S. |
| LONGITUDE | 17 | I3,1X,I2,I1,A1 | Degrees, minutes and tenths of minutes (if given) of longitudes, E or W. |
| DATE/TIME | 26 | 2(I2,1X,I2,1X,2I2,1X) | Month, day and time of beginning and end of a hydrographic cast in the Japan Standard Time (JST), which is nine hours ahead of the coordinated Universal Time (UTC). |
| W-DEPTH | 48 | I4 | Water depth to the bottom in meters. |
| W-COLOR | 54 | I2 | Color of sea in Forel-Ure scale. |
| TRANS | 57 | I2,1X,I2,1X | Transparency in meters with wire angle in parentheses, as determined by Secchi Disk. |
| SSF-No | 102 | A3,I3 | Corresponding station number of the subsurface temperature data. |
| ACM-NO | 109 | A3,I3 | Corresponding station number of the subsurface current data. |
| SUB STN NO | 116 | A6 | Sub station number. |
| CRUISE NO | 122 | I4 | |
| REC_IND | 126 | A1 | '=' |
| Element | Start Position | Field Type | Description of Field |
|---|---|---|---|
| STATION NO | 1 | A3,I4 | |
| REMARKS | 9 | A82 | Remarks of the station. |
| PARAM INF | 91 | A35 | Information about element and position of additional parameters in DATA. Refer to the explanation of "(ADD PARAM)" in DATA for the details of the described element. |
| REC_IND | 126 | A1 | '=' |
| Element | Start Position | Field Type | Description of Field |
|---|---|---|---|
| STATION NO | 1 | A3,I4 | |
| TIME | 9 | 2I2 | Sampling time in JST. |
| DEPTH(OBS) | 17 | I4 | Depth of sampling in meters. |
| TEMP(OBS) | 22 | F6.3 | CTD temperature in "the International Temperature Scale of 1990 (ITS-90)" |
| SAL(OBS) | 28 | F6.3 | CTD salinity in "the practical salinity scale, 1978 (PSS-78)" |
| DO | 35 | I3 | Concentration of dissolved oxygen in micro mol per liter as determined by the Winkler Method. |
| PO4-P | 39 | F4.2 | Inorganic phosphate-phosphorus in micro mol per liter as determined by the reduction method using ascorbic acid (Strickland and Parsons, 1965). |
| T-P | 44 | F4.2 | Total phosphorus in micro mol per liter as determined using the potassium persulfate decomposition method. |
| NO3-N | 49 | F4.1 | (Nitrate + nitrite)-nitrogen in micromols per liter as determined by the Muellin-Riley method using copper-cadmium reduction column (Wood, Armstrong and Richard,1967). |
| NO2-N | 54 | F4.2 | Nitrite-nitrogen in micro mol per liter as determined by the Bendschneider and Robinson method (Strickland and Parsons, 1965). |
| NH3-N | 59 | F4.2 | Ammonia-nitrogen in micro mol per liter as determined by the modified indophenol method. |
| PH | 64 | F4.2 | Hydrogen-ion concentration exponent at 25 degrees centigrade as determined by the pH meter. |
| CHL | 69 | F6.2 | Chlorophyll a in micrograms per liter as determined by the fluorometric technique. |
| PHA | 76 | F6.2 | Phaeopigments in micrograms per liter as determined by the fluorometric technique. |
| (ADD PARAM) | 83 | (Additional parameter.) "PRESSURE" in 10^4Pa, Chemical oxygen demand ("COD") in milligrams per liter, silicate-silicon ("SILICATE") in micromoles per liter, total nitrogen ("TOTAL-N") in micromoles per liter, "ALKALINITY" in milliequivalents per liter and total inorganic carbon ("TIC") in millimoles per liter. | |
| DEPTH(STD) | 94 | I4 | Standard depths in meters. |
| TEMP(STD) | 99 | F6.3 | CTD temperature in ITS-90 |
| SAL(STD) | 105 | F6.3 | CTD salinity in PSS-78" |
| D-ST | 116 | I4 | Thermosteric anomaly in 10^-8 m^3/kg. |
| DELTA-D | 121 | F5.3 | Geopotential anomaly in 10 m^2/sec^2. |
| REC_IND | 126 | A1 | '@'(End Record of station) or '=' |