*2019/08/26 15:30:29.69 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 22:41:59.000 END TIME : UTC 2017/02/28 22:42:16.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 88 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 26.35 2 Depth metres 0.15 26.3 3 Temperature 'deg C (ITS90)' 7.651 7.791 4 Conductivity S/m 2.82974 2.92774 5 Conductance:Specific S/m 4.32316 4.46443 6 Salinity PSS-78 26.85 27.81 7 Speed:Sound m/s 1471.32 1473.2 8 Density kg/m^3 1020.915 1021.784 $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 : 273 LATITUDE : 49 17.29440 N ! (deg min) LONGITUDE : 123 5.14745 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 20:25:46 88 88 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:29 88 88 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:25:45 -HEADER EDITS: 2017/12/13 11:33:17 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 15:30:29 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_20170228_224159 % Cast time (UTC),2017-02-28 22:41:59 % Cast time (local),2017-02-28 22:41:59 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.28824 % Start longitude,-123.0857908 % Start altitude,-15.550000190734863 % Start GPS horizontal error(Meter),2.119999885559082 % Start GPS vertical error(Meter),3.2999999523162842 % Start GPS number of satellites,7 % End latitude,49.2882936 % End longitude,-123.0858732 % End altitude,-13.170000076293945 % End GPS horizontal error(Meter),5.9099998474121094 % End GPS vertical error(Meter),9.5 % End GPS number of satellites,7 % Cast duration (Seconds),91.2 % 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 7.728 2.82980 4.32316 26.85 1471.34 1020.915 0.45 0.45 7.728 2.83090 4.32490 26.86 1471.36 1020.925 0.75 0.75 7.726 2.83022 4.32408 26.85 1471.35 1020.922 1.05 1.05 7.726 2.83030 4.32428 26.85 1471.35 1020.925 1.35 1.35 7.724 2.83032 4.32449 26.86 1471.35 1020.927 1.65 1.65 7.723 2.83028 4.32455 26.86 1471.35 1020.929 1.95 1.95 7.721 2.83074 4.32559 26.86 1471.36 1020.936 2.25 2.25 7.720 2.83015 4.32474 26.86 1471.35 1020.932 2.55 2.55 7.717 2.82987 4.32478 26.86 1471.34 1020.934 2.85 2.85 7.712 2.82984 4.32534 26.86 1471.33 1020.938 3.15 3.15 7.710 2.82974 4.32556 26.86 1471.33 1020.941 3.45 3.44 7.706 2.83004 4.32649 26.86 1471.33 1020.947 3.75 3.74 7.701 2.83013 4.32725 26.87 1471.32 1020.953 4.05 4.04 7.697 2.83072 4.32867 26.88 1471.32 1020.962 4.35 4.34 7.694 2.83154 4.33038 26.89 1471.33 1020.972 4.65 4.64 7.692 2.83341 4.33349 26.91 1471.35 1020.990 4.95 4.94 7.688 2.83576 4.33761 26.94 1471.37 1021.014 5.25 5.24 7.684 2.84023 4.34494 26.99 1471.42 1021.054 5.55 5.54 7.681 2.84366 4.35065 27.03 1471.46 1021.087 5.85 5.84 7.681 2.84678 4.35534 27.06 1471.51 1021.113 6.15 6.14 7.681 2.84691 4.35562 27.06 1471.52 1021.116 6.45 6.44 7.677 2.84767 4.35731 27.07 1471.52 1021.126 6.75 6.74 7.675 2.84800 4.35808 27.08 1471.52 1021.132 7.05 7.04 7.672 2.84837 4.35904 27.08 1471.52 1021.138 7.35 7.34 7.671 2.84895 4.36009 27.09 1471.53 1021.145 7.65 7.64 7.668 2.84958 4.36145 27.10 1471.54 1021.154 7.95 7.94 7.666 2.84999 4.36230 27.10 1471.54 1021.160 8.25 8.24 7.665 2.85031 4.36296 27.11 1471.55 1021.165 8.55 8.54 7.665 2.85092 4.36392 27.11 1471.56 1021.171 8.85 8.84 7.661 2.85037 4.36352 27.11 1471.55 1021.170 9.15 9.13 7.659 2.85051 4.36410 27.11 1471.54 1021.175 9.45 9.44 7.656 2.85046 4.36431 27.11 1471.54 1021.177 9.75 9.73 7.653 2.85050 4.36483 27.12 1471.54 1021.181 10.05 10.03 7.651 2.85048 4.36503 27.12 1471.54 1021.184 10.35 10.33 7.652 2.85177 4.36696 27.13 1471.56 1021.195 10.65 10.63 7.654 2.85260 4.36796 27.14 1471.58 1021.202 10.95 10.93 7.654 2.85455 4.37088 27.16 1471.61 1021.219 11.25 11.23 7.656 2.85761 4.37531 27.19 1471.66 1021.244 11.55 11.53 7.659 2.86099 4.38011 27.22 1471.72 1021.271 11.85 11.83 7.663 2.86460 4.38512 27.26 1471.78 1021.299 12.15 12.13 7.667 2.86548 4.38595 27.26 1471.81 1021.305 12.45 12.43 7.669 2.86676 4.38756 27.27 1471.84 1021.315 12.75 12.73 7.670 2.86720 4.38813 27.28 1471.85 1021.319 13.05 13.03 7.671 2.86795 4.38916 27.29 1471.87 1021.326 13.35 13.33 7.671 2.86833 4.38966 27.29 1471.88 1021.330 13.65 13.63 7.673 2.86951 4.39124 27.30 1471.90 1021.340 13.95 13.93 7.675 2.87112 4.39344 27.32 1471.93 1021.353 14.25 14.23 7.676 2.87235 4.39515 27.33 1471.96 1021.363 14.55 14.53 7.677 2.87309 4.39625 27.33 1471.97 1021.370 14.85 14.82 7.679 2.87409 4.39752 27.34 1472.00 1021.378 15.15 15.12 7.682 2.87426 4.39732 27.34 1472.02 1021.379 15.45 15.42 7.684 2.87722 4.40157 27.37 1472.07 1021.403 15.75 15.72 7.688 2.87933 4.40430 27.39 1472.11 1021.419 16.05 16.02 7.693 2.88195 4.40760 27.41 1472.16 1021.437 16.35 16.32 7.700 2.88660 4.41381 27.46 1472.25 1021.472 16.65 16.62 7.703 2.88921 4.41737 27.48 1472.29 1021.492 16.95 16.92 7.706 2.89106 4.41983 27.50 1472.33 1021.507 17.25 17.22 7.708 2.89173 4.42051 27.50 1472.35 1021.512 17.55 17.52 7.709 2.89259 4.42174 27.51 1472.37 1021.520 17.85 17.82 7.710 2.89323 4.42252 27.52 1472.39 1021.525 18.15 18.12 7.710 2.89375 4.42328 27.52 1472.40 1021.530 18.45 18.42 7.710 2.89336 4.42269 27.52 1472.40 1021.529 18.75 18.72 7.710 2.89356 4.42311 27.52 1472.40 1021.532 19.05 19.02 7.711 2.89362 4.42302 27.52 1472.41 1021.533 19.35 19.32 7.712 2.89403 4.42352 27.52 1472.42 1021.537 19.65 19.61 7.712 2.89363 4.42289 27.52 1472.43 1021.535 19.95 19.91 7.713 2.89356 4.42264 27.52 1472.43 1021.535 20.25 20.21 7.714 2.89368 4.42266 27.52 1472.44 1021.536 20.55 20.51 7.715 2.89389 4.42291 27.52 1472.45 1021.539 20.85 20.81 7.716 2.89398 4.42284 27.52 1472.46 1021.540 21.15 21.11 7.717 2.89473 4.42386 27.53 1472.48 1021.546 21.45 21.41 7.718 2.89529 4.42456 27.53 1472.49 1021.551 21.75 21.71 7.720 2.89477 4.42348 27.52 1472.50 1021.547 22.05 22.01 7.721 2.89488 4.42357 27.52 1472.51 1021.549 22.35 22.31 7.723 2.89531 4.42404 27.53 1472.52 1021.552 22.65 22.61 7.725 2.89609 4.42492 27.53 1472.54 1021.558 22.95 22.91 7.732 2.89928 4.42883 27.56 1472.61 1021.581 23.25 23.21 7.741 2.90124 4.43053 27.57 1472.67 1021.591 23.55 23.51 7.750 2.91019 4.44307 27.66 1472.81 1021.659 23.85 23.81 7.756 2.91682 4.45237 27.73 1472.92 1021.711 24.15 24.11 7.765 2.92135 4.45801 27.77 1473.01 1021.742 24.45 24.40 7.772 2.92233 4.45852 27.77 1473.05 1021.746 24.75 24.70 7.777 2.92337 4.45950 27.78 1473.08 1021.752 25.05 25.00 7.781 2.92520 4.46178 27.79 1473.12 1021.766 25.35 25.30 7.785 2.92730 4.46443 27.81 1473.16 1021.781 25.65 25.60 7.789 2.92764 4.46441 27.81 1473.18 1021.782 25.95 25.90 7.791 2.92771 4.46423 27.81 1473.20 1021.783 26.35 26.30 7.791 2.92774 4.46423 27.81 1473.20 1021.784