MIRAI MR07-05 Conductivity-Temperature-Depth Profiler (CTD)

Last Modified: 2014-07-30
: MR07-05
: Processed (PI)
: Pressure, Temperature, Salinity, Dissolved oxygen
:
OCEANS > OCEAN CHEMISTRY > OXYGEN
OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
OCEANS > SALINITY/DENSITY > SALINITY

For Using Data

Masahide Wakita (JAMSTEC)
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 MR07-05 cruise are presented in “System”.
The following software, developed and supplied by the Sea-Bird Electronics, Inc., was used in MR07-05.
SEASAVE(ver 5.27b) for data acquisition
SEASOFT(ver 5.27b) for data processing
Data presented on this website is averaged over 1db.

• Pressure sensor
Model : SBE9plus, Sea-Bird Electronics,Inc.
Serial number : 79492
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 : 034188
Measurement range : -5.0 to +35degC
Accuracy : 0.001degC
Resolution : 0.0002degC
• Salinity sensor
Model : SBE4, Sea-Bird Electronics,Inc.
Serial number : 043064
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

(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) The time and position presented in the header is at the starting time of cast.
(3) 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.
: MR07-05
: Processed (PI)
: 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
MR0705_S02_1_ct1.csv
MR0705_S02_2_ct1.csv
MR0705_S02_3_ct1.csv
MR0705_S02_4_ct1.csv
MR0705_S06_1_ct1.csv
MR0705_S06_2_ct1.csv
MR0705_S06_3_ct1.csv
MR0705_S06_4_ct1.csv
MR0705_S06_5_ct1.csv
MR0705_S06_6_ct1.csv
MR0705_S06_7_ct1.csv
MR0705_S09_1_ct1.csv
MR0705_S10_1_ct1.csv
MR0705_S10_2_ct1.csv
MR0705_S11_1_ct1.csv
MR0705_S12_1_ct1.csv
MR0705_S12_2_ct1.csv
MR0705_S13_1_ct1.csv
MR0705_S14_1_ct1.csv
MR0705_S14_2_ct1.csv
MR0705_S15_1_ct1.csv
MR0705_S15_2_ct1.csv
MR0705_S18_1_ct1.csv
MR0705_S18_2_ct1.csv
MR0705_S20_1_ct1.csv
MR0705_S20_2_ct1.csv
MR0705_S20_3_ct1.csv
MR0705_S20_4_ct1.csv
Observation List
The list of observation is shown as follows.
Observation Time and Date Lat. [°] Lon. [°]
MR0705_S02_1_ct1 2007-09-08 13:21 51.0008 164.9987
MR0705_S02_2_ct1 2007-09-09 07:22 51.0020 164.9962
MR0705_S02_3_ct1 2007-09-09 08:55 51.0027 164.9942
MR0705_S02_4_ct1 2007-09-10 00:10 50.9965 165.0037
MR0705_S06_1_ct1 2007-09-11 03:14 47.0018 160.0040
MR0705_S06_2_ct1 2007-09-12 16:50 46.8657 160.0007
MR0705_S06_3_ct1 2007-09-12 21:20 46.8815 159.9668
MR0705_S06_4_ct1 2007-09-13 09:15 46.9408 160.0990
MR0705_S06_5_ct1 2007-09-13 19:30 46.8862 160.0028
MR0705_S06_6_ct1 2007-09-14 21:12 46.8380 160.0888
MR0705_S06_7_ct1 2007-09-15 06:51 46.9353 160.0003
MR0705_S09_1_ct1 2007-09-22 15:34 43.7990 155.1763
MR0705_S10_1_ct1 2007-09-22 21:14 43.0035 154.9993
MR0705_S10_2_ct1 2007-09-22 23:18 42.9937 154.9752
MR0705_S11_1_ct1 2007-09-23 08:36 42.0095 155.0020
MR0705_S12_1_ct1 2007-09-21 20:00 41.0205 155.0392
MR0705_S12_2_ct1 2007-09-22 02:05 40.9947 155.1350
MR0705_S13_1_ct1 2007-09-21 10:01 39.9995 155.0010
MR0705_S14_1_ct1 2007-09-20 22:21 38.9975 155.0047
MR0705_S14_2_ct1 2007-09-21 00:11 38.9923 155.0010
MR0705_S15_1_ct1 2007-09-18 21:50 37.9942 155.0032
MR0705_S15_2_ct1 2007-09-19 00:13 37.9947 155.0050
MR0705_S18_1_ct1 2007-09-17 20:50 35.0058 154.9762
MR0705_S18_2_ct1 2007-09-18 03:31 34.9487 155.0368
MR0705_S20_1_ct1 2007-09-24 18:35 46.9277 159.9662
MR0705_S20_2_ct1 2007-09-25 01:03 46.9238 160.0022
MR0705_S20_3_ct1 2007-09-25 03:15 46.9430 160.0072
MR0705_S20_4_ct1 2007-09-25 05:17 46.9425 160.0037
: MR07-05
: Processed (PI)

CTD WOCE-type2


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'.

Related Information

Update History

2014-07-30
An observation data was registerd.
2013-03-27
An observation data was registerd.
2012-10-27
An observation data was registerd.