*2019/08/26 15:30:30.91 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 00:50:12.000 END TIME : UTC 2017/03/02 00:50:27.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 77 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.88 2 Depth metres 0.15 22.84 3 Temperature 'deg C (ITS90)' 7.498 7.55 4 Conductivity S/m 2.7823 2.84324 5 Conductance:Specific S/m 4.28074 4.36752 6 Salinity PSS-78 26.53 27.12 7 Speed:Sound m/s 1470.04 1471.34 8 Density kg/m^3 1020.692 1021.252 $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 : 292 LATITUDE : 49 17.68865 N ! (deg min) LONGITUDE : 123 1.12736 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 20:44:37 77 77 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:30 77 77 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:44:37 -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 15:30:30 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_20170302_005012_mid % Cast time (UTC),2017-03-02 00:50:12 % Cast time (local),2017-03-02 00:50:12 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2948109 % Start longitude,-123.0187894 % Start altitude,-21.059999465942383 % Start GPS horizontal error(Meter),2.1400001049041748 % Start GPS vertical error(Meter),3.059999942779541 % Start GPS number of satellites,7 % End latitude,49.2949787 % End longitude,-123.0164598 % End altitude,-16.200000762939453 % End GPS horizontal error(Meter),4.7699999809265137 % End GPS vertical error(Meter),7.7100000381469727 % End GPS number of satellites,6 % Cast duration (Seconds),106 % 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 7.498 2.78230 4.28074 26.53 1470.04 1020.692 0.45 0.45 7.498 2.78231 4.28078 26.53 1470.05 1020.694 0.75 0.75 7.500 2.78365 4.28260 26.54 1470.07 1020.705 1.05 1.05 7.499 2.78435 4.28375 26.55 1470.09 1020.712 1.35 1.35 7.500 2.78364 4.28255 26.54 1470.08 1020.707 1.65 1.65 7.499 2.78406 4.28327 26.54 1470.09 1020.712 1.95 1.95 7.501 2.78520 4.28482 26.55 1470.12 1020.722 2.25 2.25 7.502 2.78523 4.28468 26.55 1470.12 1020.722 2.55 2.55 7.506 2.78425 4.28265 26.54 1470.13 1020.713 2.85 2.85 7.509 2.78419 4.28213 26.54 1470.14 1020.711 3.15 3.15 7.510 2.78406 4.28179 26.53 1470.15 1020.710 3.45 3.44 7.511 2.78443 4.28233 26.54 1470.16 1020.715 3.75 3.75 7.515 2.79222 4.29374 26.61 1470.28 1020.777 4.05 4.04 7.516 2.79284 4.29452 26.62 1470.29 1020.782 4.35 4.34 7.516 2.79307 4.29485 26.62 1470.30 1020.785 4.65 4.64 7.520 2.79684 4.30022 26.66 1470.37 1020.815 4.95 4.94 7.525 2.80997 4.31973 26.79 1470.56 1020.921 5.25 5.24 7.532 2.82471 4.34139 26.94 1470.78 1021.038 5.55 5.54 7.542 2.82860 4.34609 26.98 1470.86 1021.065 5.85 5.84 7.547 2.82724 4.34328 26.96 1470.86 1021.051 6.15 6.14 7.543 2.82638 4.34246 26.95 1470.84 1021.048 6.45 6.44 7.542 2.82866 4.34623 26.98 1470.87 1021.069 6.75 6.74 7.541 2.82670 4.34332 26.96 1470.85 1021.055 7.05 7.04 7.537 2.83053 4.34970 27.00 1470.89 1021.091 7.35 7.34 7.540 2.82941 4.34765 26.98 1470.89 1021.081 7.65 7.64 7.547 2.83276 4.35184 27.02 1470.96 1021.105 7.95 7.94 7.550 2.83186 4.34998 27.00 1470.96 1021.096 8.25 8.24 7.550 2.83407 4.35347 27.03 1471.00 1021.116 8.55 8.54 7.542 2.83812 4.36069 27.07 1471.03 1021.156 8.85 8.84 7.538 2.83666 4.35903 27.06 1471.00 1021.148 9.15 9.14 7.537 2.83684 4.35944 27.07 1471.01 1021.152 9.45 9.44 7.536 2.83812 4.36157 27.08 1471.03 1021.165 9.75 9.73 7.538 2.83879 4.36223 27.08 1471.05 1021.170 10.05 10.04 7.539 2.83908 4.36258 27.09 1471.06 1021.173 10.35 10.33 7.543 2.83767 4.35990 27.07 1471.06 1021.160 10.65 10.63 7.545 2.83634 4.35757 27.05 1471.05 1021.148 10.95 10.93 7.544 2.83605 4.35721 27.05 1471.05 1021.148 11.25 11.23 7.545 2.83868 4.36116 27.08 1471.09 1021.170 11.55 11.53 7.547 2.83936 4.36196 27.08 1471.11 1021.176 11.85 11.83 7.544 2.83634 4.35775 27.05 1471.07 1021.154 12.15 12.13 7.542 2.83647 4.35815 27.06 1471.07 1021.158 12.45 12.43 7.541 2.83716 4.35939 27.06 1471.08 1021.166 12.75 12.73 7.540 2.83950 4.36313 27.09 1471.11 1021.187 13.05 13.03 7.541 2.84007 4.36382 27.09 1471.12 1021.192 13.35 13.33 7.543 2.83830 4.36090 27.07 1471.11 1021.178 13.65 13.63 7.536 2.83720 4.36015 27.07 1471.08 1021.175 13.95 13.93 7.535 2.83859 4.36240 27.08 1471.10 1021.189 14.25 14.23 7.535 2.83795 4.36136 27.08 1471.10 1021.184 14.55 14.53 7.533 2.83818 4.36204 27.08 1471.10 1021.189 14.85 14.83 7.532 2.83809 4.36205 27.08 1471.10 1021.191 15.15 15.13 7.532 2.83819 4.36211 27.08 1471.11 1021.192 15.45 15.43 7.535 2.83846 4.36213 27.08 1471.12 1021.194 15.75 15.72 7.535 2.83742 4.36062 27.07 1471.11 1021.187 16.05 16.02 7.534 2.83697 4.36002 27.07 1471.11 1021.185 16.35 16.32 7.534 2.83729 4.36046 27.07 1471.12 1021.189 16.65 16.62 7.530 2.83697 4.36053 27.07 1471.11 1021.190 16.95 16.92 7.528 2.83608 4.35945 27.06 1471.10 1021.186 17.25 17.22 7.530 2.83607 4.35913 27.06 1471.11 1021.185 17.55 17.52 7.531 2.83746 4.36118 27.07 1471.13 1021.198 17.85 17.82 7.530 2.83744 4.36129 27.07 1471.13 1021.200 18.15 18.12 7.530 2.83790 4.36200 27.08 1471.14 1021.205 18.45 18.42 7.532 2.83759 4.36125 27.07 1471.15 1021.202 18.75 18.72 7.531 2.83746 4.36115 27.07 1471.15 1021.203 19.05 19.02 7.531 2.83736 4.36097 27.07 1471.15 1021.203 19.35 19.32 7.533 2.83849 4.36252 27.08 1471.18 1021.213 19.65 19.62 7.534 2.83871 4.36271 27.08 1471.19 1021.215 19.95 19.92 7.534 2.83852 4.36237 27.08 1471.19 1021.214 20.25 20.22 7.535 2.83858 4.36238 27.08 1471.20 1021.216 20.55 20.52 7.534 2.83818 4.36180 27.08 1471.20 1021.214 20.85 20.82 7.533 2.83726 4.36055 27.07 1471.19 1021.209 21.15 21.11 7.534 2.83761 4.36097 27.07 1471.20 1021.212 21.45 21.41 7.537 2.84043 4.36492 27.10 1471.25 1021.235 21.75 21.71 7.541 2.84138 4.36589 27.11 1471.28 1021.241 22.05 22.01 7.550 2.84246 4.36635 27.11 1471.32 1021.245 22.35 22.31 7.550 2.84324 4.36752 27.12 1471.34 1021.252 22.65 22.61 7.544 2.84019 4.36360 27.09 1471.29 1021.232 22.88 22.84 7.543 2.83831 4.36080 27.07 1471.26 1021.219