*2019/08/26 15:30:05.97 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/03/10 19:08:20.000 END TIME : UTC 2016/03/10 19:08:30.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 53 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.8 2 Depth metres 0.15 15.91 3 Temperature 'deg C (ITS90)' 6.504 8.409 4 Conductivity S/m 0.25555 2.70754 5 Conductance:Specific S/m 0.40559 4.05205 6 Salinity PSS-78 2.09 25.07 7 Speed:Sound m/s 1435.48 1472.04 8 Density kg/m^3 1001.587 1019.512 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F R4 2 2 -99 ' ' 7 F R4 2 3 -99 ' ' 8 F R4 3 4 -99 ' ' 10 F R4 5 5 -99 ' ' 10 F R4 5 6 -99 ' ' 7 F R4 2 7 -99 ' ' 8 F R4 2 8 -99 ' ' 9 F R4 3 $END *ADMINISTRATION MISSION : 2016-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 182 LATITUDE : 49 6.96839 N ! (deg min) LONGITUDE : 123 4.98966 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1545005 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 19:06:12 53 53 HDREDIT2 3.1.1 2017/12/13 11:31:11 ? ? CALIB 12.0 2019/08/26 15:30:05 53 53 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 19:06:11 -HEADER EDITS: 2017/12/13 11:31:11 Applied edit header: P:\Cruise_Data_Processing\CHS_data\test\Docs\CHS-ref-HDR.TXT Channel 1: Pressure [decibar] Format: F10.3 ==> F7.2 Channel 2: Depth [metres] Format: F10.3 ==> F7.2 Channel 3: Temperature [deg C (ITS90)] Format: F10.3 ==> F8.3 Channel 4: Conductivity [mS/cm] Format: F10.3 ==> F9.1 Channel 6: Salinity [PSS-78] Format: F10.3 ==> F7.2 Channel 8: Density [kg/m^3] Format: F10.3 ==> F9.3 Channel 5: Conductance:Specific [mS/cm] Format: F10.3 ==> F9.1 Channel 7: Speed:Sound [m/s] Format: F10.3 ==> F8.2 -CALIB parameters: 2019/08/26 15:30:05 Calibration type = Correct Mode: ONLY - calibration specs from Cal File only. Calibration file = Q:\OSD_DataProcessing\Cruise_data\conductivity-corrections\recal-cond.CCF Calibrations applied: Ch Name Units Fmla Coefficents -- ----------------------------- --------- --- ----------------------------- 4 Conductivity S/m 10 0.0000000E+00 0.1000000E-03 5 Conductance:Specific S/m 10 0.0000000E+00 0.1000000E-03 $END *COMMENTS Data Processing Notes: The CastAway-CTD is a small profiling instrument that measures conductivity, temperature, and pressure. Its embedded firmware controls all of the instrument's functions. It is designed for profiling to depths of up to 100m at 5 Hz. It uses a six electrode flow-through conductivity cell with zero external field coupled with a rapid response thermistor (<5Hz) to attain high measurement accuracies. The instrument does not require a pump and is hydrodynamically designed to free fall rate of 1 m/s. Processing was done using the CastAway CTD data processing system which included the following steps: - Pressure correction to remove ambient atmospheric pressure. - Removal of records obtained while the system was stationary. - De-spiking of conductivity data to remove erratic measurements near the water surface that can be caused by air bubbles trapped in the conductivity flow cell. - Bin-averaging with 0.3db bins with linear interpolation used to fill empty bins or the nearest available value for surface or bottom bins. - Combination of downcast and upcast data using a weighted average based on fall velocity. - Derivation of specific conductance, salinity, sound speed, density and depth for each pressure bin. The data were converted to IOS Header format and some quality control checks were made. Resolution and Accuracy as stated by the manufacturer is: Channel Resolution Accuracy Pressure 0.01 db 0.25 db Depth 0.01 m 0.25 m Temperature 0.01 degrees C 0.05 degrees C Conductivity 1 mS/cm 5 mS/cm Conductance:Specific 1 mS/cm 5 mS/cm Salinity 0.01 (PSS-78) 0.1 (PSS-78) Speed:Sound 0.01 m/s 0.15 m/s Density 0.004 kg/m3 0.02 kg/m3 GPS 10m Density is derived based on temperature resolution and accuracy using the International Equation of State for sea water (EOS-80). Depth and Specific Conductance are derived using the International Equation of State for sea water (EOS-80). Salinity was calculated using the 1978 Practical Salinity Scale. Sound Speed was calculated using the method of Chen-Millero, 1977. Original data file header: % Device,CC1545005 % File name,CC1545005_20160310_190820 % Cast time (UTC),2016-03-10 19:08:20 % Cast time (local),2016-03-10 19:08:20 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1161398 % Start longitude,-123.083161 % Start altitude,-16.430000305175781 % Start GPS horizontal error(Meter),2.2100000381469727 % Start GPS vertical error(Meter),3.0999999046325684 % Start GPS number of satellites,6 % End latitude,49.115614 % End longitude,-123.0836477 % End altitude,-14.470000267028809 % End GPS horizontal error(Meter),3.9300000667572021 % End GPS vertical error(Meter),5.0199999809265137 % End GPS number of satellites,6 % Cast duration (Seconds),108.8 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2015-11-20 % Temperature calibration date,2015-11-19 % Pressure calibration date,2015-11-17 % For more information about the CastAway CTD see document "CastAway CTD Principles of Operation.pdf”. *CALIBRATION $TABLE: CORRECTED CHANNELS ! Name Units Fmla Pad Coefficients ! ---------------------- ----- ---- ------ ------------ Conductivity S/m 10 -99 () (0 0.1E-03) Conductance:Specific S/m 10 -99 () (0 0.1E-03) $END !--1--- --2--- ---3--- ----4---- ----5---- --6--- ---7--- ---8---- !Pressu Depth Tempera Conductiv Conductan Salini Speed: Density !re ture ity ce: ty Sound ! Specific !------ ------ ------- --------- --------- ------ ------- -------- *END OF HEADER 0.15 0.15 6.504 0.25555 0.40559 2.09 1435.48 1001.587 0.45 0.46 6.517 0.25661 0.40709 2.10 1435.55 1001.594 0.75 0.76 6.540 0.27745 0.43984 2.28 1435.88 1001.736 1.05 1.07 6.563 0.33164 0.52536 2.75 1436.59 1002.110 1.35 1.37 6.581 0.35112 0.55590 2.92 1436.88 1002.246 1.65 1.68 6.600 0.37508 0.59347 3.13 1437.24 1002.412 1.95 1.98 6.616 0.41026 0.64882 3.44 1437.70 1002.659 2.25 2.29 6.627 0.42948 0.67897 3.61 1437.97 1002.795 2.55 2.59 6.640 0.44910 0.70971 3.79 1438.25 1002.934 2.85 2.90 6.665 0.47225 0.74571 3.99 1438.63 1003.096 3.15 3.20 6.689 0.50198 0.79204 4.26 1439.07 1003.306 3.45 3.51 6.726 0.57644 0.90845 4.93 1440.08 1003.836 3.75 3.81 6.741 0.58551 0.92233 5.01 1440.25 1003.900 4.05 4.12 6.765 0.61476 0.96767 5.28 1440.69 1004.109 4.35 4.42 6.889 0.74845 1.17352 6.49 1442.74 1005.059 4.65 4.73 7.074 1.05539 1.64522 9.35 1447.10 1007.291 4.95 5.03 7.327 1.50567 2.32884 13.63 1453.46 1010.629 5.25 5.33 7.532 1.73263 2.66296 15.78 1456.97 1012.297 5.55 5.63 7.674 1.86395 2.85237 17.02 1459.07 1013.252 5.85 5.93 7.739 1.93189 2.95041 17.66 1460.13 1013.750 6.15 6.24 7.759 1.94432 2.96761 17.78 1460.36 1013.839 6.45 6.54 7.769 1.94794 2.97225 17.81 1460.44 1013.863 6.75 6.84 7.793 1.96718 2.99934 17.99 1460.76 1014.002 7.05 7.14 7.813 1.99639 3.04210 18.27 1461.19 1014.222 7.35 7.44 7.832 2.03259 3.09542 18.62 1461.71 1014.496 7.65 7.74 7.869 2.06320 3.13850 18.91 1462.21 1014.717 7.95 8.05 7.899 2.10025 3.19198 19.26 1462.77 1014.993 8.25 8.35 7.917 2.12807 3.23252 19.53 1463.18 1015.203 8.55 8.65 7.936 2.14956 3.26320 19.74 1463.51 1015.362 8.85 8.95 7.954 2.16386 3.28315 19.87 1463.75 1015.465 9.15 9.25 7.970 2.19267 3.32529 20.15 1464.16 1015.684 9.45 9.55 8.002 2.23113 3.38029 20.52 1464.75 1015.969 9.75 9.85 8.029 2.26761 3.43280 20.87 1465.29 1016.243 10.05 10.15 8.053 2.29504 3.47175 21.13 1465.71 1016.446 10.35 10.45 8.069 2.30914 3.49143 21.26 1465.94 1016.549 10.65 10.76 8.088 2.33778 3.53269 21.54 1466.36 1016.765 10.95 11.06 8.117 2.37095 3.57965 21.86 1466.87 1017.010 11.25 11.36 8.136 2.38394 3.59726 21.98 1467.10 1017.103 11.55 11.66 8.141 2.39511 3.61353 22.09 1467.26 1017.189 11.85 11.96 8.162 2.41712 3.64446 22.30 1467.60 1017.352 12.15 12.26 8.181 2.44335 3.68188 22.55 1467.99 1017.549 12.45 12.56 8.206 2.47808 3.73133 22.88 1468.51 1017.809 12.75 12.86 8.226 2.50148 3.76431 23.11 1468.87 1017.983 13.05 13.16 8.235 2.51177 3.77878 23.21 1469.03 1018.060 13.35 13.46 8.250 2.52627 3.79892 23.34 1469.26 1018.167 13.65 13.76 8.277 2.54912 3.83018 23.56 1469.63 1018.332 13.95 14.06 8.275 2.55721 3.84255 23.64 1469.73 1018.399 14.25 14.36 8.272 2.55875 3.84522 23.66 1469.74 1018.414 14.55 14.66 8.280 2.56842 3.85878 23.75 1469.90 1018.487 14.85 14.96 8.288 2.58934 3.88935 23.96 1470.18 1018.650 15.15 15.26 8.328 2.66926 4.00453 24.74 1471.31 1019.260 15.45 15.56 8.380 2.70230 4.04783 25.04 1471.88 1019.489 15.80 15.91 8.409 2.70754 4.05205 25.07 1472.04 1019.512