Information on CTD raw data observed by R/V MIRAI
(Cruise number : MR00-K08)

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-K08 cruise are 
presented in section 3.
The following software, developed and supplied by the Sea-Bird 
Electronics, Inc., was used in MR00-K08.
  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
----------------------
Following is the option for CTD/RMS(Rosette Multi Sampler) system;
    CTD/RMS and 24 Niskin bottles of 30L


3. Sensors
----------
(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 :       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 :       0357
    Measurement range :   up to 10500m
    Accuracy :            0.015%F.S.
    Resolution :          0.001%F.S.
(4) DO sensor
    Model :               SBE13-04, Sea-Bird Electronics,Inc.
    Serial number :       130540
    Measurement range :   0-15ml/l
    Accuracy :            0.1ml/l
    Resolution :          0.01ml/l
(5) Fluorometer
    Model :               Seapoint Sensors,Inc.
    Serial number :       2148
(6) Altimeter
    Model :               Benthos 2110-1,
    Serial number :       0206
 
 
4. Notes
--------
(1) Data processing sequence for SEASOFT as follows;
        --------------------------------------------------------------------
        command   function
        --------  ----------------------------------------------------------
        datcnv    Convert raw data to engineering units, and store converted 
                  data in file.
        alignctd  Align data relative to pressure(typically used for 
                  conductivity, temperature, and oxygen).
        derive    Calculate salinity, density, etc..
        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.
        --------------------------------------------------------------------