*2019/08/26 15:30:36.30 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/20 23:46:07.000 END TIME : UTC 2017/06/20 23:46:17.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 53 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.76 2 Depth metres 0.15 15.79 3 Temperature 'deg C (ITS90)' 10.358 15.796 4 Conductivity S/m 1.35158 3.07494 5 Conductance:Specific S/m 1.6565 4.34824 6 Salinity PSS-78 9.66 27.32 7 Speed:Sound m/s 1479.69 1482.34 8 Density kg/m^3 1006.381 1020.982 $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 : 523 LATITUDE : 49 18.28502 N ! (deg min) LONGITUDE : 123 6.92022 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 00:34:37 53 53 HDREDIT2 3.1.1 2017/12/13 11:33:21 ? ? CALIB 12.0 2019/08/26 15:30:36 53 53 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:34:37 -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_20170620_234607mid % Cast time (UTC),2017-06-20 23:46:07 % Cast time (local),2017-06-20 23:46:07 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3047504 % Start longitude,-123.115337 % Start altitude,-17.850000381469727 % Start GPS horizontal error(Meter),2.0899999141693115 % Start GPS vertical error(Meter),3.1500000953674316 % Start GPS number of satellites,7 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),141.6 % 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 15.796 1.35158 1.65650 9.66 1479.99 1006.381 0.45 0.46 15.487 1.42356 1.75806 10.29 1479.69 1006.926 0.75 0.76 15.194 1.58219 1.96817 11.63 1480.26 1008.001 1.05 1.06 14.913 1.77731 2.22646 13.29 1481.24 1009.324 1.35 1.36 14.737 1.87761 2.36257 14.17 1481.67 1010.033 1.65 1.67 14.491 1.90760 2.41521 14.51 1481.23 1010.336 1.95 1.97 14.218 2.02187 2.57772 15.57 1481.54 1011.198 2.25 2.27 13.966 2.13347 2.73760 16.62 1481.90 1012.048 2.55 2.58 13.731 2.20015 2.84029 17.29 1481.88 1012.607 2.85 2.88 13.522 2.28650 2.96777 18.13 1482.15 1013.292 3.15 3.18 13.356 2.35105 3.06473 18.77 1482.34 1013.816 3.45 3.48 13.185 2.39716 3.13883 19.26 1482.33 1014.223 3.75 3.78 12.979 2.43502 3.20571 19.70 1482.13 1014.599 4.05 4.08 12.819 2.46154 3.25436 20.02 1481.95 1014.874 4.35 4.38 12.642 2.48960 3.30692 20.37 1481.75 1015.171 4.65 4.68 12.509 2.53644 3.38111 20.86 1481.87 1015.576 4.95 4.99 12.387 2.56335 3.42813 21.18 1481.81 1015.838 5.25 5.29 12.217 2.60191 3.49563 21.62 1481.74 1016.213 5.55 5.59 12.046 2.63998 3.56315 22.07 1481.68 1016.589 5.85 5.89 11.861 2.65559 3.60217 22.32 1481.33 1016.817 6.15 6.19 11.676 2.69923 3.67985 22.84 1481.29 1017.248 6.45 6.49 11.509 2.79974 3.83426 23.88 1481.94 1018.085 6.75 6.79 11.310 2.83484 3.90365 24.34 1481.78 1018.475 7.05 7.09 11.194 2.84046 3.92399 24.47 1481.53 1018.596 7.35 7.39 11.147 2.85247 3.94563 24.62 1481.54 1018.717 7.65 7.69 11.120 2.86147 3.96104 24.72 1481.57 1018.803 7.95 7.99 11.090 2.87126 3.97790 24.84 1481.60 1018.897 8.25 8.29 11.053 2.88034 3.99458 24.95 1481.61 1018.991 8.55 8.59 11.041 2.88149 3.99751 24.97 1481.59 1019.009 8.85 8.89 11.035 2.88677 4.00552 25.02 1481.64 1019.054 9.15 9.19 11.016 2.89079 4.01325 25.07 1481.64 1019.098 9.45 9.49 10.999 2.89201 4.01676 25.09 1481.61 1019.120 9.75 9.79 11.000 2.89612 4.02244 25.13 1481.66 1019.151 10.05 10.09 11.014 2.89833 4.02387 25.14 1481.73 1019.159 10.35 10.39 10.987 2.89626 4.02403 25.14 1481.64 1019.164 10.65 10.69 10.971 2.90136 4.03290 25.20 1481.66 1019.214 10.95 10.99 10.962 2.90556 4.03978 25.25 1481.68 1019.253 11.25 11.29 10.942 2.90806 4.04546 25.29 1481.66 1019.286 11.55 11.59 10.910 2.92183 4.06831 25.44 1481.74 1019.413 11.85 11.89 10.832 2.95177 4.11892 25.78 1481.87 1019.692 12.15 12.19 10.754 2.97131 4.15519 26.03 1481.89 1019.895 12.45 12.49 10.739 2.98714 4.17916 26.19 1482.03 1020.026 12.75 12.79 10.707 2.98967 4.18640 26.24 1481.98 1020.069 13.05 13.09 10.635 2.99460 4.20180 26.34 1481.84 1020.159 13.35 13.39 10.585 3.00664 4.22458 26.49 1481.85 1020.287 13.65 13.69 10.582 3.01597 4.23808 26.58 1481.96 1020.361 13.95 13.99 10.578 3.02059 4.24507 26.63 1482.01 1020.401 14.25 14.29 10.523 3.03040 4.26538 26.77 1481.98 1020.516 14.55 14.59 10.526 3.04297 4.28268 26.89 1482.14 1020.610 14.85 14.89 10.480 3.06031 4.31267 27.09 1482.22 1020.777 15.15 15.19 10.418 3.06577 4.32800 27.19 1482.12 1020.866 15.45 15.49 10.378 3.07034 4.33931 27.26 1482.07 1020.931 15.76 15.79 10.358 3.07494 4.34824 27.32 1482.08 1020.982