MIRAI MR11-05 Leg2 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2017-06-22
: MR11-05 Leg2
: Processed (DMO)-QCed
: JAMSTEC
: Pressure, Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY

For Using Data

Data Management Office
See Terms and Conditions about constrain of use.
See Terms and Conditions about data citation.
Instrument:
Water sampling system with CTD (30 litters * 24 bottles)
Instrument:
Water sampling system with CTD (12 litters * 36 bottles)
Instrument:
Water sampling system with CTD (12 litters * 12 bottles)
Instrument:
Conductivity temperature depth measurements (CTD)
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 MR11-05 Leg2 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR11-05 Leg2.
SEASAVE(ver 7.20g) for data acquisition
SEASOFT(ver 7.18d) for data processing
Data presented on this website is averaged over 1db.

・ Pressure sensor
Model : SBE9plus, Sea-Bird Electronics,Inc.
Serial number : 117457
Measurement range : up to 10500m
Accuracy : 0.015% F.S.
Resolution : 0.001% F.S.
・ Temperature sensor
Model : SBE3, Sea-Bird Electronics,Inc.
Serial number : 034815
Measurement range : -5.0 to +35degC
Accuracy : 0.001degC
Resolution : 0.0002degC
・ Salinity sensor
Model : SBE4, Sea-Bird Electronics,Inc.
Serial number : 041203
Measurement range : 0.0 to 7 S/m
Accuracy : 0.0003 S/m
Resolution : 0.00004 S/m
・ DO sensor
Model : SBE43, Sea-Bird Electronics,Inc.
Serial number : 430394
Measurement range : 120% of surface saturation
Accuracy : 2% of saturation

Sensors used in each cast is as follows.
Cast name Serial number of sensor
Pressure Temperature Salinity Dissolved Oxygen
D01M01117457034815041203430394
D02M01117457034815041203430394
D03M01117457034815041203430394
D04M01117457034815041203430394
F01M03117457034815041203430394
KEOM01117457034815041203430394
S01M01117457034815041203430394
S01M02117457034815041203430394
S01M03117457034815041203430394
S01M04117457034815041203430394
S01M05117457034815041203430394
S01M06117457034815041203430394
S01M07117457034815041203430394
S01M08117457034815041203430394
S01M09117457034815041203430394
S01M10117457034815041203430394
S01M11117457034815041203430394
S01M12117457034815041203430394
S01M13117457034815041203430394
S01M14117457034815041203430394
Calibration Information is as follows.
(1) Data processing sequence for SEASOFT is as follows;
  ("∗" is not SEASOFT original procedure.)
command function
datcnv Convert raw data to engineering units, and store converted data in file.
tcorp Corrected the pressure sensitivity of the temperature(SBE3) sensor.
alignctd Align data relative to pressure(typically used for conductivity, temperature, and oxygen).
wildedit Mark a data value with badflag to eliminate wild points.
celltm Perform conductivity thermal mass correction.
filter Low-pass filter columns of data.
wfilter Median filter removes spikes of fluorometer data.
section Extract rows of data from file.
loopedit Mark a scan with badflag if scan fails pressure reversal or minimum velocity tests.
despike Remove spikes of the data.
derive Calculate oxygen. (with oxygen sensor)
binavg Average data, basing bins on pressure, depth, scan number, or time range.
derive Calculate salinity, density, etc..
split Split data in file into upcast and downcast files.
(2) Quality control
QCed data were added flag according to the NODC (National Oceanographic Data Center) quality control procedure.
1) The gradient check of adjacent depth data
2) The density inversion check
3) The broad range check set up at given ocean space and depth
Please see the site of NODC of the following link for quality control procedure in detail.
In addition, an abnormal value is identified by a visual check, and the data after visual QC is released.
(1) In this cruise, there is extra data (fluorescence intensity, transmittance, distance to bottom) in additional to temperature, salinity, dissolved oxygen that has been opened to the public. Please contact us from "Contact Us" above if necessary.
: MR11-05 Leg2
: Processed (DMO)-QCed
: JAMSTEC
: Pressure, Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY

Observation Map

  1. Clicking the icon displays a balloon with observation information.
  2. Then click the observation name, figures will be displayed.
Imagery reproduced from ...

Figures

Data List

File names
D01M01.dat
D02M01.dat
D03M01.dat
D04M01.dat
F01M03.dat
KEOM01.dat
S01M01.dat
S01M02.dat
S01M03.dat
S01M04.dat
S01M05.dat
S01M06.dat
S01M07.dat
S01M08.dat
S01M09.dat
S01M10.dat
S01M11.dat
S01M12.dat
S01M13.dat
S01M14.dat
ex_read2.f (Sample Program)
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
D01M01 2011-07-19 04:12 37.5835 141.5158
D02M01 2011-07-19 00:22 37.3321 141.4655
D03M01 2011-07-18 21:16 36.9996 141.2828
D04M01 2011-07-18 06:17 36.6906 141.1500
F01M03 2011-07-17 21:28 36.4831 141.4993
KEOM01 2011-07-31 20:27 32.4980 144.5586
S01M01 2011-07-24 05:16 29.9956 144.9950
S01M02 2011-07-24 17:21 30.0016 144.9995
S01M03 2011-07-25 06:57 30.0046 144.9985
S01M04 2011-07-26 02:22 30.0398 145.0200
S01M05 2011-07-26 06:32 30.0375 145.0180
S01M06 2011-07-27 04:29 30.0406 145.0408
S01M07 2011-07-27 17:20 30.0015 144.9988
S01M08 2011-07-27 22:53 30.0081 144.9958
S01M09 2011-07-29 04:48 30.0341 144.9055
S01M10 2011-07-30 06:16 30.0116 144.9873
S01M11 2011-07-30 09:55 30.2375 145.2671
S01M12 2011-07-30 14:52 29.7511 145.3015
S01M13 2011-07-30 19:27 29.7336 144.7151
S01M14 2011-07-31 00:02 30.2508 144.7013
: MR11-05 Leg2
: Processed (DMO)-QCed
: JAMSTEC

CTD DMO


Format Description for the Corrected Data
Provided in the Exchange Format of CCHDO (CLIVAR and Carbon Hydrographic Data Office). Please see the following link for details of Exchange Format.
Data in following cruise is not expressed with Exchange Format. Please see the site of each cruise for format.
MR02-K05 Leg1
MR04-05
Format Description for the QCed Data
Each data file contains one line header (meta data) followed by data lines for each cast.
The number of data lines are recorded in the header.
  1. Header part
No. Column Content Format Remarks
1 1 Header ID a1 fixed as '#'
2 3 - 6 Data ID a4 CTD
3 8 - 22 Cruise ID a15 MRYY-(K)XX(_legx)
4 24 - 31 Cast name a8
5 33 - 40 Date i8 YYYYMMDD (UTC)
6 42 - 45 Time i4 hhmm (UTC)
7 47 - 55 Latitude i2,a1,f5.2,a1 dd-mm.mmN(S)
8 57 - 66 Longitude i3,a1,f5.2,a1 ddd-mm.mmE(W)
9 68 - 71 Number of data lines i4
10 72 - 73 Terminator - CR+LF
  1. Data part
No. Column Content Unit Format Remarks
1 1 - 11 Pressure dbar f11.3
2 12 - 22 Temperature deg-C f11.4 ITS-90
3 23 - 33 Salinity PSU f11.4 PSS-78
4 34 - 44 Dissolved oxygen umol/kg f11.3
5 45 - 55 Flag - i11 1 - 7 : space
8 : flag of pressure
9 : flag of temperature
10 : flag of salinity
11 : flag of dissolved oxygen
* reference : 'Definition of Quality Control Flags'
6 56 - 57 Terminator - - CR+LF
  1. Each contents of the data part is stored in 11 bytes.
  2. Missing value is presented by '-5', and error value is presented by '-9'.

Definition of Quality Control Flags
  1. Depth Flags
  2. 0 - accepted value
    1 - error in recorded depth ( same or less than previous depth )
    2 - density inversion

  3. Observed Level Flags
  4. N - missing value
    0 - accepted value
    1 - range outlier ( outside of broad range check )
    2 - failed inversion check
    3 - failed gradient check
    4 - zero anomaly
    5 - failed combined gradient and inversion checks
    6 - failed range and inversion checks
    7 - failed range and gradient checks
    8 - failed range and zero anomaly checks
    9 - failed range and combined gradient and inversion checks
    A - failed visual check

    QCed data were added flag according to the NODC (National Oceanographic Data Center) quality control procedure, additionally visually checked. Please see the site of NODC of the following link for quality control procedure.

Related Information

Update History

2017-06-22
An observation data was registerd.
2014-08-08
An observation data was registerd.
2014-02-20
An observation data was registerd.
2013-08-22
An observation data was registerd.