Information on CTD raw data observed by R/V MIRAI
(Cruise number : MR00-K03)

1. Preface
----------
CTD(Conductivity-Temperature-Depth profiler) is used to observe 
the vertical profiles of temperature and conductivity.
Usually, this system is operated with multicylinder water sampler.
Observed signal is transmitted from sensor to the operation room on 
board using wire cable, and electric power is supplied from vessel 
to sensor.
Details of sensors attached to CTD system for MR00-K03 cruise are 
presented in section 3.
The following software, developed and supplied by the Sea-Bird 
Electronics, Inc., was used in MR00-K03.
  SEASAVE(ver 4.232) for data acquisition
  SEASOFT(ver 4.232) for data processing
Data presented on this website is averaged over 1db.


2. CTD sampling system
----------------------
Followings are the options for CTD/RMS(Rosette Multi Sampler) systems;
    system1 : CTD/RMS and 24 Niskin bottles of 30L
    system2 : CTD/RMS and 12 Niskin bottles of 12L


3. Sensors
----------
CTD/RMS system1
(1) Temperature sensor
    Model :               SBE3-04F, Sea-Bird Electronics,Inc.
    Serial number :       031359
    Measurement range :   -5.0 to +35degC
    Accuracy :            0.001degC
    Resolution :          0.0002degC
(2) Salinity sensor
    Model :               SBE4-04/O, Sea-Bird Electronics,Inc.
    Serial number :       041206
    Measurement range :   0.0 to 7S/m
    Accuracy :            0.0003S/m
    Resolution :          0.00004S/m
(3) Pressure sensor
    Model :               SBE9plus, Sea-Bird Electronics,Inc.
    Serial number :       42423
    Measurement range :   up to 10500m
    Accuracy :            0.015%F.S.
    Resolution :          0.001%F.S.
(4) Fluorometer
    Model :               SEA TECH,Inc.
    Serial number :       132s
(5) Altimeter
    Model :               Benthos 2110-1,
    Serial number :       0206
 
CTD/RMS system2
(1) Temperature sensor
    Model :               SBE3-04F, Sea-Bird Electronics,Inc.
    Serial number :       031525
    Measurement range :   -5.0 to +35degC
    Accuracy :            0.001degC
    Resolution :          0.0002degC
(2) Salinity sensor
    Model :               SBE4-04/O, Sea-Bird Electronics,Inc.
    Serial number :       041088
    Measurement range :   0.0 to 7S/m
    Accuracy :            0.0003S/m
    Resolution :          0.00004S/m
(3) Pressure sensor
    Model :               SBE9plus, Sea-Bird Electronics,Inc.
    Serial number :       751190
    Measurement range :   up to 10500m
    Accuracy :            0.015%F.S.
    Resolution :          0.001%F.S.
(4) Altimeter
    Model :               Datasonics PSA-900D,
    Serial number :       396
 

4. Notes
--------
(1) Observed data by system1 is stored in the data file, its filename 
    includes the letter of 'L' or 'l'.
    Observed data by system2 is stored in the data file, its filename 
    includes the letter of 'S' or 's'.
(2) Data processing sequence for SEASOFT as follows;
        --------------------------------------------------------------------
        command   function
        --------  ----------------------------------------------------------
        datcnv    Convert raw data to engineering units, and store converted 
                  data in file.
        section   Extract rows of data from file.
        wildedit  Mark a data value with badflag to eliminate wild points.
        binavg    Average data, basing bins on pressure, depth, scan number, 
                  or time range.
        split     Split data in file into upcast and downcast files.
        --------------------------------------------------------------------