*2019/08/26 15:30:36.77 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/21 23:47:46.000 END TIME : UTC 2017/06/21 23:48:01.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 80 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.82 2 Depth metres 0.15 23.82 3 Temperature 'deg C (ITS90)' 9.993 12.767 4 Conductivity S/m 2.5635 3.11877 5 Conductance:Specific S/m 3.39384 4.45603 6 Salinity PSS-78 20.96 28.03 7 Speed:Sound m/s 1481.21 1482.82 8 Density kg/m^3 1015.591 1021.626 $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 : 2017-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 534 LATITUDE : 49 18.43769 N ! (deg min) LONGITUDE : 123 4.98586 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1606003 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/09 00:44:58 80 80 HDREDIT2 3.1.1 2017/12/13 11:33:21 ? ? CALIB 12.0 2019/08/26 15:30:36 80 80 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:44:58 -HEADER EDITS: 2017/12/13 11:33:21 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 15:30:36 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,CC1606003 % File name,CC1606003_20170621_234746 % Cast time (UTC),2017-06-21 23:47:46 % Cast time (local),2017-06-21 23:47:46 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3072948 % Start longitude,-123.0830976 % Start altitude,-12.229999542236328 % Start GPS horizontal error(Meter),2.4200000762939453 % Start GPS vertical error(Meter),3.4500000476837158 % Start GPS number of satellites,7 % End latitude,49.3072213 % End longitude,-123.0828661 % End altitude,-17.110000610351562 % End GPS horizontal error(Meter),57.169998168945312 % End GPS vertical error(Meter),162.52999877929688 % End GPS number of satellites,4 % Cast duration (Seconds),92 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2016-03-01 % Temperature calibration date,2016-02-23 % Pressure calibration date,2016-02-12 % 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 12.767 2.56350 3.39384 20.96 1482.82 1015.591 0.45 0.45 12.719 2.56453 3.39951 21.00 1482.70 1015.628 0.75 0.75 12.658 2.56707 3.40837 21.06 1482.56 1015.683 1.05 1.05 12.640 2.57368 3.41884 21.13 1482.58 1015.741 1.35 1.35 12.632 2.57744 3.42458 21.17 1482.60 1015.774 1.65 1.66 12.588 2.57950 3.43129 21.21 1482.50 1015.816 1.95 1.96 12.539 2.58621 3.44469 21.30 1482.44 1015.893 2.25 2.26 12.461 2.58907 3.45566 21.37 1482.25 1015.961 2.55 2.56 12.373 2.59792 3.47565 21.50 1482.10 1016.078 2.85 2.86 12.311 2.60204 3.48699 21.57 1481.97 1016.146 3.15 3.16 12.251 2.60986 3.50312 21.68 1481.89 1016.240 3.45 3.46 12.209 2.62506 3.52748 21.84 1481.94 1016.374 3.75 3.76 12.185 2.63269 3.54001 21.92 1481.96 1016.444 4.05 4.06 12.161 2.63796 3.54937 21.98 1481.96 1016.497 4.35 4.36 12.131 2.65571 3.57610 22.16 1482.07 1016.642 4.65 4.67 12.076 2.66405 3.59267 22.27 1482.01 1016.737 4.95 4.97 12.029 2.66755 3.60201 22.33 1481.92 1016.793 5.25 5.27 11.972 2.67820 3.62194 22.47 1481.88 1016.906 5.55 5.57 11.882 2.68760 3.64356 22.61 1481.73 1017.031 5.85 5.87 11.768 2.69859 3.66977 22.78 1481.54 1017.184 6.15 6.17 11.713 2.72157 3.70651 23.02 1481.64 1017.385 6.45 6.47 11.663 2.74266 3.74034 23.25 1481.74 1017.570 6.75 6.77 11.608 2.78565 3.80471 23.69 1482.07 1017.919 7.05 7.07 11.476 2.80456 3.84438 23.95 1481.91 1018.144 7.35 7.37 11.419 2.80993 3.85779 24.04 1481.82 1018.223 7.65 7.67 11.391 2.81244 3.86416 24.08 1481.77 1018.261 7.95 7.97 11.366 2.81910 3.87599 24.16 1481.78 1018.328 8.25 8.27 11.334 2.82794 3.89159 24.26 1481.80 1018.415 8.55 8.57 11.308 2.83646 3.90616 24.36 1481.82 1018.496 8.85 8.87 11.291 2.84456 3.91906 24.45 1481.88 1018.568 9.15 9.17 11.259 2.85177 3.93252 24.54 1481.87 1018.644 9.45 9.47 11.230 2.85813 3.94446 24.62 1481.87 1018.712 9.75 9.77 11.205 2.86424 3.95562 24.69 1481.87 1018.775 10.05 10.07 11.177 2.86779 3.96354 24.74 1481.84 1018.821 10.35 10.37 11.144 2.87129 3.97201 24.80 1481.79 1018.871 10.65 10.67 11.117 2.88325 3.99152 24.93 1481.86 1018.979 10.95 10.97 11.088 2.89799 4.01514 25.09 1481.95 1019.109 11.25 11.27 11.054 2.90767 4.03238 25.21 1481.97 1019.206 11.55 11.57 11.019 2.91330 4.04410 25.28 1481.94 1019.273 11.85 11.87 10.989 2.91734 4.05305 25.34 1481.91 1019.325 12.15 12.17 10.970 2.91918 4.05785 25.38 1481.88 1019.354 12.45 12.47 10.955 2.92110 4.06218 25.40 1481.87 1019.380 12.75 12.77 10.924 2.92134 4.06604 25.43 1481.79 1019.404 13.05 13.07 10.852 2.92186 4.07489 25.48 1481.60 1019.460 13.35 13.37 10.763 2.92283 4.08642 25.55 1481.37 1019.531 13.65 13.67 10.653 2.93510 4.11625 25.75 1481.21 1019.701 13.95 13.97 10.586 2.98041 4.18759 26.23 1481.56 1020.091 14.25 14.27 10.542 3.01090 4.23567 26.56 1481.80 1020.354 14.55 14.57 10.491 3.05431 4.30300 27.02 1482.17 1020.722 14.85 14.87 10.393 3.07160 4.33932 27.27 1482.11 1020.927 15.15 15.17 10.255 3.08475 4.37487 27.50 1481.90 1021.131 15.45 15.47 10.172 3.09752 4.40344 27.69 1481.83 1021.293 15.75 15.77 10.132 3.10164 4.41423 27.76 1481.78 1021.356 16.05 16.07 10.094 3.10428 4.42275 27.81 1481.71 1021.406 16.35 16.37 10.068 3.10636 4.42901 27.85 1481.67 1021.443 16.65 16.67 10.059 3.10703 4.43114 27.87 1481.65 1021.456 16.95 16.97 10.054 3.10704 4.43173 27.87 1481.65 1021.461 17.25 17.27 10.049 3.10723 4.43268 27.88 1481.64 1021.468 17.55 17.57 10.046 3.10739 4.43333 27.88 1481.64 1021.473 17.85 17.87 10.042 3.10775 4.43434 27.89 1481.63 1021.480 18.15 18.16 10.035 3.11030 4.43880 27.92 1481.65 1021.506 18.45 18.46 10.029 3.11264 4.44294 27.95 1481.67 1021.530 18.75 18.76 10.024 3.11424 4.44587 27.96 1481.68 1021.548 19.05 19.06 10.022 3.11395 4.44570 27.96 1481.67 1021.548 19.35 19.36 10.016 3.11389 4.44638 27.97 1481.66 1021.554 19.65 19.66 10.014 3.11487 4.44798 27.98 1481.67 1021.564 19.95 19.96 10.014 3.11463 4.44773 27.98 1481.67 1021.564 20.25 20.26 10.012 3.11497 4.44845 27.98 1481.68 1021.569 20.55 20.56 10.011 3.11477 4.44825 27.98 1481.68 1021.569 20.85 20.86 10.009 3.11476 4.44848 27.98 1481.68 1021.572 21.15 21.16 10.011 3.11499 4.44863 27.98 1481.69 1021.574 21.45 21.46 10.011 3.11455 4.44791 27.98 1481.69 1021.571 21.75 21.76 10.010 3.11506 4.44880 27.98 1481.70 1021.577 22.05 22.06 10.009 3.11574 4.44986 27.99 1481.71 1021.584 22.35 22.36 10.008 3.11638 4.45091 28.00 1481.72 1021.591 22.65 22.66 10.009 3.11658 4.45108 28.00 1481.73 1021.594 22.95 22.95 10.000 3.11782 4.45402 28.02 1481.72 1021.611 23.25 23.25 9.993 3.11827 4.45551 28.03 1481.72 1021.621 23.55 23.55 9.994 3.11871 4.45603 28.03 1481.73 1021.625 23.82 23.82 9.996 3.11877 4.45592 28.03 1481.74 1021.626