*2019/08/26 15:30:12.35 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/20 20:21:10.000 END TIME : UTC 2016/10/20 20:21:22.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 62 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.41 2 Depth metres 0.15 18.53 3 Temperature 'deg C (ITS90)' 10.564 10.777 4 Conductivity S/m 0.148E-01 2.7593 5 Conductance:Specific S/m 0.2069E-01 3.87783 6 Salinity PSS-78 0.1 24.1 7 Speed:Sound m/s 1450.19 1479.03 8 Density kg/m^3 999.707 1018.457 $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 : 425 LATITUDE : 49 7.03873 N ! (deg min) LONGITUDE : 123 4.93308 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 2017/12/08 22:58:07 62 62 HDREDIT2 3.1.1 2017/12/13 11:31:15 ? ? CALIB 12.0 2019/08/26 15:30:12 62 62 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:58:06 -HEADER EDITS: 2017/12/13 11:31:15 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 15:30:12 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_20161020_202110 % Cast time (UTC),2016-10-20 20:21:10 % Cast time (local),2016-10-20 20:21:10 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1173121 % Start longitude,-123.082218 % Start altitude,-20.649999618530273 % Start GPS horizontal error(Meter),2 % Start GPS vertical error(Meter),2.7400000095367432 % Start GPS number of satellites,9 % End latitude,49.1167523 % End longitude,-123.0830315 % End altitude,-14.930000305175781 % End GPS horizontal error(Meter),8.7600002288818359 % End GPS vertical error(Meter),10.270000457763672 % End GPS number of satellites,7 % Cast duration (Seconds),106.6 % 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 10.777 0.01480 0.02069 0.10 1450.46 999.707 0.45 0.46 10.734 0.01784 0.02496 0.12 1450.32 999.728 0.75 0.77 10.701 0.02076 0.02907 0.14 1450.22 999.748 1.05 1.07 10.681 0.02575 0.03609 0.17 1450.19 999.778 1.35 1.38 10.678 0.04837 0.06779 0.33 1450.38 999.902 1.65 1.68 10.680 0.06872 0.09631 0.47 1450.57 1000.015 1.95 1.99 10.679 0.07155 0.10027 0.49 1450.60 1000.033 2.25 2.29 10.673 0.07459 0.10454 0.51 1450.61 1000.052 2.55 2.60 10.665 0.08915 0.12498 0.61 1450.71 1000.136 2.85 2.90 10.658 0.22989 0.32236 1.66 1451.98 1000.957 3.15 3.21 10.650 0.39864 0.55910 2.98 1453.58 1001.987 3.45 3.52 10.647 0.58081 0.81468 4.45 1455.37 1003.135 3.75 3.82 10.644 0.69796 0.97906 5.42 1456.54 1003.889 4.05 4.12 10.644 0.86031 1.20683 6.79 1458.19 1004.951 4.35 4.43 10.642 0.95651 1.34183 7.61 1459.19 1005.589 4.65 4.73 10.642 1.08834 1.52677 8.74 1460.57 1006.472 4.95 5.04 10.639 1.16813 1.63883 9.44 1461.40 1007.013 5.25 5.34 10.637 1.20730 1.69391 9.78 1461.81 1007.280 5.55 5.64 10.636 1.26906 1.78062 10.32 1462.46 1007.702 5.85 5.95 10.633 1.34366 1.88541 10.98 1463.25 1008.215 6.15 6.25 10.628 1.49885 2.10349 12.36 1464.90 1009.289 6.45 6.55 10.624 1.70364 2.39113 14.21 1467.11 1010.722 6.75 6.86 10.616 1.87663 2.63454 15.79 1468.99 1011.950 7.05 7.16 10.605 2.07450 2.91325 17.62 1471.15 1013.372 7.35 7.46 10.597 2.43565 3.42112 21.01 1475.20 1016.001 7.65 7.76 10.589 2.60473 3.65949 22.62 1477.11 1017.254 7.95 8.06 10.582 2.64145 3.71175 22.97 1477.52 1017.531 8.25 8.36 10.580 2.65963 3.73753 23.15 1477.73 1017.669 8.55 8.66 10.580 2.66956 3.75148 23.24 1477.85 1017.744 8.85 8.96 10.582 2.67557 3.75973 23.30 1477.93 1017.789 9.15 9.26 10.583 2.67730 3.76210 23.32 1477.95 1017.803 9.45 9.56 10.586 2.67798 3.76269 23.32 1477.97 1017.807 9.75 9.86 10.590 2.67869 3.76330 23.32 1478.00 1017.811 10.05 10.16 10.587 2.67922 3.76429 23.33 1478.00 1017.818 10.35 10.46 10.583 2.68044 3.76649 23.34 1478.01 1017.831 10.65 10.77 10.579 2.68145 3.76832 23.36 1478.01 1017.842 10.95 11.06 10.579 2.68462 3.77273 23.39 1478.06 1017.867 11.25 11.37 10.581 2.69165 3.78248 23.45 1478.15 1017.920 11.55 11.67 10.579 2.69454 3.78667 23.48 1478.18 1017.943 11.85 11.97 10.578 2.69566 3.78839 23.49 1478.19 1017.954 12.15 12.27 10.579 2.69811 3.79170 23.52 1478.23 1017.973 12.45 12.57 10.579 2.70085 3.79554 23.54 1478.27 1017.994 12.75 12.87 10.577 2.70228 3.79778 23.56 1478.28 1018.008 13.05 13.17 10.576 2.70487 3.80159 23.58 1478.31 1018.029 13.35 13.47 10.575 2.71251 3.81238 23.66 1478.40 1018.088 13.65 13.77 10.574 2.71763 3.81968 23.71 1478.46 1018.128 13.95 14.07 10.572 2.72066 3.82417 23.74 1478.50 1018.153 14.25 14.37 10.572 2.72382 3.82864 23.77 1478.54 1018.178 14.55 14.67 10.573 2.72816 3.83458 23.81 1478.60 1018.211 14.85 14.97 10.572 2.73256 3.84092 23.85 1478.65 1018.246 15.15 15.27 10.569 2.73542 3.84519 23.88 1478.68 1018.270 15.45 15.57 10.568 2.74288 3.85580 23.95 1478.77 1018.328 15.75 15.87 10.565 2.74858 3.86417 24.01 1478.83 1018.374 16.05 16.17 10.564 2.75416 3.87213 24.06 1478.90 1018.417 16.35 16.47 10.565 2.75454 3.87258 24.07 1478.91 1018.421 16.65 16.77 10.569 2.75428 3.87177 24.06 1478.92 1018.418 16.95 17.07 10.570 2.75460 3.87210 24.06 1478.93 1018.421 17.25 17.37 10.570 2.75533 3.87310 24.07 1478.95 1018.427 17.55 17.67 10.572 2.75745 3.87591 24.09 1478.98 1018.443 17.85 17.97 10.573 2.75825 3.87685 24.10 1479.00 1018.449 18.15 18.27 10.574 2.75848 3.87707 24.10 1479.01 1018.452 18.41 18.53 10.578 2.75930 3.87783 24.10 1479.03 1018.457