*2019/08/26 15:30:37.97 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 00:45:31.000 END TIME : UTC 2017/06/23 00:45:40.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 47 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.95 2 Depth metres 0.15 13.97 3 Temperature 'deg C (ITS90)' 11.717 12.159 4 Conductivity S/m 2.67657 2.80511 5 Conductance:Specific S/m 3.60148 3.81994 6 Salinity PSS-78 22.34 23.8 7 Speed:Sound m/s 1482.25 1482.73 8 Density kg/m^3 1016.754 1018.019 $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 : 560 LATITUDE : 49 17.80072 N ! (deg min) LONGITUDE : 123 0.33988 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 01:10:27 47 47 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:37 47 47 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:10:27 -HEADER EDITS: 2017/12/13 11:33:22 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 15:30:37 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_004531 % Cast time (UTC),2017-06-23 00:45:31 % Cast time (local),2017-06-23 00:45:31 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2966787 % Start longitude,-123.0056647 % Start altitude,-11.859999656677246 % Start GPS horizontal error(Meter),2.0899999141693115 % Start GPS vertical error(Meter),2.9800000190734863 % Start GPS number of satellites,8 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),105 % 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 12.159 2.67657 3.60148 22.34 1482.31 1016.754 0.45 0.45 12.122 2.68034 3.61015 22.40 1482.25 1016.806 0.75 0.75 12.084 2.69296 3.63093 22.54 1482.28 1016.921 1.05 1.05 12.063 2.70311 3.64667 22.64 1482.34 1017.008 1.35 1.35 12.042 2.70525 3.65164 22.67 1482.31 1017.038 1.65 1.65 12.034 2.72438 3.67821 22.86 1482.50 1017.180 1.95 1.96 12.021 2.72563 3.68121 22.88 1482.48 1017.199 2.25 2.25 11.992 2.73267 3.69359 22.96 1482.48 1017.269 2.55 2.56 11.969 2.74135 3.70766 23.05 1482.52 1017.347 2.85 2.86 11.940 2.74427 3.71447 23.10 1482.48 1017.388 3.15 3.16 11.927 2.74793 3.72072 23.14 1482.49 1017.423 3.45 3.46 11.924 2.74916 3.72275 23.15 1482.49 1017.436 3.75 3.76 11.918 2.75391 3.72975 23.20 1482.54 1017.475 4.05 4.06 11.909 2.75175 3.72775 23.18 1482.49 1017.467 4.35 4.36 11.901 2.75283 3.73004 23.20 1482.48 1017.481 4.65 4.66 11.894 2.75139 3.72874 23.19 1482.46 1017.476 4.95 4.96 11.889 2.75655 3.73631 23.24 1482.50 1017.518 5.25 5.26 11.873 2.75609 3.73729 23.25 1482.46 1017.526 5.55 5.56 11.851 2.76078 3.74587 23.30 1482.45 1017.575 5.85 5.86 11.846 2.76849 3.75688 23.38 1482.53 1017.636 6.15 6.16 11.842 2.76885 3.75774 23.38 1482.53 1017.642 6.45 6.46 11.845 2.76880 3.75739 23.38 1482.54 1017.641 6.75 6.76 11.847 2.76883 3.75716 23.38 1482.55 1017.641 7.05 7.06 11.846 2.76822 3.75643 23.38 1482.55 1017.638 7.35 7.36 11.835 2.76590 3.75442 23.36 1482.49 1017.630 7.65 7.67 11.819 2.76799 3.75894 23.39 1482.47 1017.657 7.95 7.96 11.803 2.77157 3.76544 23.43 1482.47 1017.695 8.25 8.27 11.787 2.78036 3.77895 23.52 1482.53 1017.769 8.55 8.57 11.779 2.78505 3.78625 23.57 1482.57 1017.810 8.85 8.87 11.775 2.78083 3.78083 23.54 1482.52 1017.783 9.15 9.17 11.775 2.78047 3.78041 23.53 1482.51 1017.782 9.45 9.47 11.768 2.78022 3.78079 23.54 1482.50 1017.786 9.75 9.77 11.761 2.78480 3.78769 23.58 1482.53 1017.825 10.05 10.07 11.758 2.78552 3.78898 23.59 1482.54 1017.834 10.35 10.37 11.758 2.78456 3.78764 23.58 1482.53 1017.828 10.65 10.67 11.758 2.78461 3.78778 23.58 1482.54 1017.830 10.95 10.97 11.754 2.78469 3.78823 23.59 1482.53 1017.834 11.25 11.27 11.751 2.78556 3.78974 23.59 1482.54 1017.844 11.55 11.57 11.747 2.78582 3.79054 23.60 1482.53 1017.849 11.85 11.87 11.738 2.78404 3.78908 23.59 1482.49 1017.844 12.15 12.17 11.724 2.78719 3.79482 23.63 1482.49 1017.877 12.45 12.47 11.730 2.79053 3.79873 23.66 1482.55 1017.899 12.75 12.77 11.757 2.79098 3.79652 23.64 1482.64 1017.885 13.05 13.07 11.760 2.78889 3.79342 23.62 1482.63 1017.870 13.35 13.37 11.757 2.79831 3.80646 23.71 1482.73 1017.941 13.65 13.67 11.728 2.80311 3.81602 23.77 1482.71 1017.996 13.95 13.97 11.717 2.80511 3.81994 23.80 1482.70 1018.019