Information on CTD raw data observed by R/V MIRAI (Cruise number : MR99-K05) 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 MR99-K05 cruise are presented in section 3. The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR99-K05. SEASAVE(ver 4.236) for data acquisition SEASOFT(ver 4.236) for data processing Data presented on this website is averaged over 1m. 2. CTD sampling system ---------------------- Followings are the options for CTD/RMS(Rosette Multi Sampler) systems; system1 : CTD/RMS and 36 Niskin bottles of 12L 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 : 031314 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 : 041205 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 : 0358 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 : 130338 Measurement range : 0-15ml/l Accuracy : 0.1ml/l Resolution : 0.01ml/l (5) Altimeter Model : Benthos 2110-1, Serial number : 0205 CTD/RMS system2 (1) Temperature sensor Model : SBE3-04F, Sea-Bird Electronics,Inc. Serial number : 031464 Measurement range : -5.0 to +35degC Accuracy : 0.001degC Resolution : 0.0002degC (2) Temperature sensor Model : SBE3-04F, Sea-Bird Electronics,Inc. Serial number : 032445 Measurement range : -5.0 to +35degC Accuracy : 0.001degC Resolution : 0.0002degC (3) 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 (4) Salinity sensor Model : SBE4-04/O, Sea-Bird Electronics,Inc. Serial number : 041045 Measurement range : 0.0 to 7S/m Accuracy : 0.0003S/m Resolution : 0.00004S/m (5) Pressure sensor Model : SBE9plus, Sea-Bird Electronics,Inc. Serial number : 51190 Measurement range : up to 10500m Accuracy : 0.015%F.S. Resolution : 0.001%F.S. (6) DO sensor Model : SBE13-04, Sea-Bird Electronics,Inc. Serial number : 130311 Measurement range : 0-15ml/l Accuracy : 0.1ml/l Resolution : 0.01ml/l 4. Notes -------- (1) Observation is performed with CTD/RMS system presented section 3. Observed data by each system and used sensors is stored in the data file, its filename is presented in the following table. applied files list (2) D.O. sensor was not attached to the file named 'Dp1_070b.cnv'. So numerics presented in D.O. column have no meaning. (3) Data are averaged over 1m. Only for the file named and 'DP1_80B.CNV', data is averaged over 1dbar. (4) Data processing sequence for SEASOFT as follows; command procedure list -------------------------------------------------------------------- command function -------- ---------------------------------------------------------- datcnv Convert raw data to engineering units, and store converted data in file. section Extract rows of data from file. binavg Average data, basing bins on pressure, depth, scan number, or time range. split Split data in file into upcast and downcast files. --------------------------------------------------------------------