XCTD data files consist of header part (first 14 records) and data part, The following elements are separated by comma in each record.
(a) Header part
Record No. | Element |
---|---|
Rec-1 | Ship name [listed in Table], cruise number and format code. Cruise number is identified with the year and the month. Format code is 'X1.1'. |
Rec-2 | Station number.Station number is given by the ship code [listed in Table] suffixed with four-digits consecutive numbers. |
Rec-3 | The number of data records. |
Rec-4 | Date (year/month/day) and time at the beginning of the expendable CTD observation in the Japan Standard Time (JST), which is nine hours ahead of the Coordinated Universal Time (UTC). |
Rec-5 | Latitude and longitude at the beginning of the expendable CTD observation with degrees, `-', minutes, `.', hundredth part of minutes. |
Rec-6 | Water depth at the beginning of the expendable CTD observation and sounding flag [listed in Table]. |
Rec-7 | Corresponding station number of the subsurface current data and sub-station number. |
Rec-8 | Sea surface temperature and salinity. |
Rec-9 | Probe type and instrument serial number. |
Rec-10 | Coefficients of the depth-time equation. |
Rec-11 | Correction coefficient of water temperature sensor. |
Rec-12 | Correction coefficient of electric conductivity sensor. |
Rec-13, Rec-14 | Headers for data columns. |
(b) Data part
Data are described at every 1 meter. The meaning of attached flags is shown in table.
Record No. | Elements |
---|---|
below Rec-15 | Depth, Temperature, flag of temperature, Salinity and flags of salinity [listed in table]. |
Ship Name | CALL SIGN | Ship Code | BT Code | AERO CODE |
---|---|---|---|---|
Kofu Maru | JDWX | KH | th | 1 2 47 002 |
Ryofu Maru | JGQH | RF | tf | 1 2 47 646 |
Keifu Maru | JPBN | KS | ts | 1 2 47 000 |
Chofu Maru | JCCX | NC | tc | 1 2 47 001 |
Seifu Maru | JIVB | SM | tm | 1 2 47 003 |
Flag No. | Definition |
---|---|
1 | Sounding by echo-sounder (not corrected) |
2 | Sounding by echo-sounder (corrected) |
5 | Water depth measured by CTD and altimeter |
6 | Water depth measured by BT or XCTD submersible |
9 | No sounding |
Flag No. | Definition |
---|---|
2 | Good |
3 | Doubtful |
4 | Bad |
6 | Interpolation by the separated layer over 2X10^4 Pa |
7 | Spike corrected |
9 | No data |