*2019/08/26 15:30:38.96 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 18:05:47.000 END TIME : UTC 2017/06/23 18:06:01.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 75 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.36 2 Depth metres 0.15 22.42 3 Temperature 'deg C (ITS90)' 11.179 14.004 4 Conductivity S/m 2.12752 2.77675 5 Conductance:Specific S/m 2.72731 3.83657 6 Salinity PSS-78 16.55 23.87 7 Speed:Sound m/s 1480.99 1484.15 8 Density kg/m^3 1011.981 1018.198 $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 : 583 LATITUDE : 49 17.63644 N ! (deg min) LONGITUDE : 122 58.86197 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 01:33:58 75 75 HDREDIT2 3.1.1 2017/12/13 11:33:23 ? ? CALIB 12.0 2019/08/26 15:30:38 75 75 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:33:58 -HEADER EDITS: 2017/12/13 11:33:23 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 15:30:38 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_20170623_180547 % Cast time (UTC),2017-06-23 18:05:47 % Cast time (local),2017-06-23 18:05:47 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2939407 % Start longitude,-122.9810329 % Start altitude,-7.179999828338623 % Start GPS horizontal error(Meter),3.440000057220459 % Start GPS vertical error(Meter),4.1999998092651367 % Start GPS number of satellites,6 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),114.2 % 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 14.004 2.12752 2.72731 16.55 1481.92 1011.981 0.45 0.45 13.855 2.18340 2.80967 17.09 1482.04 1012.424 0.75 0.76 13.770 2.21610 2.85799 17.41 1482.13 1012.684 1.05 1.06 13.673 2.24596 2.90374 17.71 1482.15 1012.934 1.35 1.36 13.538 2.31763 3.00691 18.40 1482.49 1013.484 1.65 1.66 13.404 2.41422 3.14322 19.30 1483.10 1014.209 1.95 1.96 13.297 2.44753 3.19545 19.65 1483.14 1014.495 2.25 2.26 13.306 2.54186 3.31781 20.48 1484.15 1015.132 2.55 2.56 13.187 2.57010 3.36511 20.79 1484.11 1015.396 2.85 2.87 13.046 2.58232 3.39366 20.98 1483.85 1015.565 3.15 3.17 12.939 2.58730 3.40983 21.08 1483.60 1015.665 3.45 3.47 12.866 2.59083 3.42102 21.15 1483.44 1015.734 3.75 3.77 12.809 2.60295 3.44219 21.30 1483.41 1015.854 4.05 4.07 12.723 2.61565 3.46688 21.46 1483.31 1015.996 4.35 4.37 12.653 2.61737 3.47562 21.51 1483.13 1016.052 4.65 4.67 12.615 2.61896 3.48128 21.55 1483.05 1016.087 4.95 4.97 12.589 2.62368 3.49000 21.61 1483.03 1016.138 5.25 5.27 12.557 2.63340 3.50584 21.71 1483.05 1016.226 5.55 5.58 12.524 2.64564 3.52521 21.84 1483.09 1016.333 5.85 5.88 12.495 2.65175 3.53614 21.91 1483.08 1016.395 6.15 6.18 12.463 2.65520 3.54381 21.96 1483.03 1016.441 6.45 6.48 12.431 2.66005 3.55330 22.03 1483.00 1016.496 6.75 6.78 12.397 2.66270 3.56004 22.07 1482.94 1016.537 7.05 7.08 12.360 2.66423 3.56563 22.11 1482.85 1016.572 7.35 7.38 12.333 2.66574 3.57020 22.14 1482.80 1016.601 7.65 7.68 12.306 2.66734 3.57499 22.17 1482.74 1016.630 7.95 7.98 12.285 2.66856 3.57863 22.19 1482.70 1016.653 8.25 8.28 12.276 2.66972 3.58103 22.21 1482.69 1016.668 8.55 8.58 12.271 2.67009 3.58197 22.21 1482.69 1016.675 8.85 8.88 12.264 2.67022 3.58282 22.22 1482.68 1016.682 9.15 9.19 12.256 2.67086 3.58450 22.23 1482.66 1016.693 9.45 9.49 12.245 2.67142 3.58625 22.24 1482.64 1016.705 9.75 9.79 12.232 2.67212 3.58844 22.25 1482.62 1016.719 10.05 10.09 12.215 2.67508 3.59407 22.29 1482.61 1016.752 10.35 10.39 12.195 2.68067 3.60354 22.35 1482.62 1016.805 10.65 10.69 12.166 2.68892 3.61746 22.45 1482.63 1016.883 10.95 10.99 12.136 2.69040 3.62236 22.48 1482.57 1016.914 11.25 11.29 12.108 2.69076 3.62557 22.50 1482.50 1016.936 11.55 11.59 12.077 2.69259 3.63105 22.53 1482.43 1016.969 11.85 11.89 12.056 2.69768 3.64001 22.59 1482.44 1017.020 12.15 12.19 12.043 2.70197 3.64710 22.64 1482.45 1017.061 12.45 12.49 12.028 2.70824 3.65706 22.71 1482.48 1017.116 12.75 12.79 11.996 2.71126 3.66430 22.75 1482.43 1017.159 13.05 13.09 11.960 2.71430 3.67192 22.80 1482.37 1017.205 13.35 13.39 11.940 2.71641 3.67677 22.84 1482.34 1017.234 13.65 13.70 11.920 2.71850 3.68166 22.87 1482.31 1017.263 13.95 14.00 11.901 2.71972 3.68513 22.89 1482.28 1017.285 14.25 14.30 11.884 2.72128 3.68902 22.91 1482.25 1017.309 14.55 14.60 11.859 2.72351 3.69449 22.95 1482.21 1017.342 14.85 14.90 11.823 2.72654 3.70218 23.00 1482.14 1017.388 15.15 15.20 11.783 2.72898 3.70960 23.05 1482.06 1017.433 15.45 15.50 11.750 2.73451 3.72046 23.12 1482.03 1017.495 15.75 15.80 11.713 2.73753 3.72824 23.17 1481.97 1017.541 16.05 16.10 11.665 2.74281 3.74041 23.25 1481.90 1017.612 16.35 16.40 11.600 2.74881 3.75521 23.35 1481.79 1017.699 16.65 16.70 11.554 2.75442 3.76758 23.43 1481.72 1017.770 16.95 17.00 11.531 2.75882 3.77603 23.48 1481.71 1017.819 17.25 17.30 11.496 2.75945 3.78052 23.51 1481.62 1017.848 17.55 17.60 11.472 2.76046 3.78431 23.54 1481.58 1017.872 17.85 17.90 11.443 2.76136 3.78863 23.56 1481.51 1017.899 18.15 18.20 11.402 2.76352 3.79587 23.61 1481.42 1017.943 18.45 18.50 11.361 2.76637 3.80405 23.66 1481.34 1017.992 18.75 18.80 11.327 2.76832 3.81023 23.70 1481.27 1018.029 19.05 19.10 11.300 2.76955 3.81480 23.73 1481.21 1018.057 19.35 19.41 11.279 2.77354 3.82249 23.78 1481.21 1018.101 19.65 19.70 11.264 2.77394 3.82466 23.80 1481.17 1018.116 19.95 20.01 11.265 2.77574 3.82699 23.81 1481.20 1018.129 20.25 20.31 11.272 2.77614 3.82686 23.81 1481.23 1018.129 20.55 20.61 11.249 2.77675 3.83011 23.83 1481.17 1018.150 20.85 20.91 11.222 2.77627 3.83230 23.84 1481.10 1018.166 21.15 21.21 11.206 2.77531 3.83270 23.84 1481.05 1018.171 21.45 21.51 11.193 2.77584 3.83481 23.86 1481.02 1018.184 21.75 21.81 11.184 2.77582 3.83574 23.86 1481.00 1018.192 22.05 22.11 11.179 2.77605 3.83657 23.87 1480.99 1018.198 22.36 22.42 11.181 2.77589 3.83609 23.87 1481.00 1018.196