*2019/08/26 15:30:29.46 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 22:26:44.000 END TIME : UTC 2017/02/28 22:27:01.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 90 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 26.93 2 Depth metres 0.15 26.88 3 Temperature 'deg C (ITS90)' 7.621 7.854 4 Conductivity S/m 2.79924 2.95758 5 Conductance:Specific S/m 4.28918 4.50107 6 Salinity PSS-78 26.6 28.07 7 Speed:Sound m/s 1470.7 1473.78 8 Density kg/m^3 1020.739 1021.984 $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 : 269 LATITUDE : 49 18.17930 N ! (deg min) LONGITUDE : 123 5.02664 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 20:21:56 90 90 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:29 90 90 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:21:55 -HEADER EDITS: 2017/12/13 11:33:16 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 15:30:29 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_20170228_222644 % Cast time (UTC),2017-02-28 22:26:44 % Cast time (local),2017-02-28 22:26:44 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3029883 % Start longitude,-123.0837774 % Start altitude,-11.180000305175781 % Start GPS horizontal error(Meter),1.8300000429153442 % Start GPS vertical error(Meter),2.6800000667572021 % Start GPS number of satellites,7 % End latitude,49.3030116 % End longitude,-123.0839344 % End altitude,-5.6500000953674316 % End GPS horizontal error(Meter),6 % End GPS vertical error(Meter),9.6999998092651367 % End GPS number of satellites,7 % Cast duration (Seconds),73 % 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 7.639 2.80046 4.29001 26.61 1470.70 1020.739 0.45 0.45 7.639 2.80108 4.29096 26.61 1470.71 1020.745 0.75 0.75 7.640 2.80053 4.29005 26.61 1470.71 1020.742 1.05 1.05 7.639 2.80031 4.28982 26.61 1470.71 1020.742 1.35 1.35 7.639 2.80092 4.29076 26.61 1470.72 1020.748 1.65 1.65 7.637 2.80062 4.29055 26.61 1470.71 1020.748 1.95 1.95 7.636 2.80000 4.28974 26.61 1470.71 1020.745 2.25 2.25 7.635 2.79985 4.28962 26.60 1470.71 1020.746 2.55 2.55 7.634 2.79978 4.28964 26.60 1470.71 1020.747 2.85 2.85 7.632 2.79933 4.28918 26.60 1470.70 1020.746 3.15 3.15 7.631 2.79941 4.28944 26.60 1470.71 1020.749 3.45 3.44 7.630 2.79953 4.28984 26.60 1470.71 1020.753 3.75 3.75 7.629 2.79987 4.29050 26.61 1470.71 1020.757 4.05 4.04 7.627 2.79924 4.28974 26.60 1470.71 1020.755 4.35 4.34 7.626 2.79988 4.29093 26.61 1470.71 1020.762 4.65 4.64 7.625 2.79967 4.29070 26.61 1470.71 1020.762 4.95 4.94 7.623 2.80032 4.29193 26.62 1470.72 1020.770 5.25 5.24 7.623 2.80026 4.29186 26.62 1470.72 1020.771 5.55 5.54 7.622 2.80023 4.29194 26.62 1470.73 1020.773 5.85 5.84 7.621 2.79996 4.29162 26.61 1470.73 1020.773 6.15 6.14 7.621 2.80047 4.29250 26.62 1470.73 1020.779 6.45 6.44 7.621 2.80073 4.29285 26.62 1470.74 1020.782 6.75 6.74 7.621 2.80202 4.29485 26.64 1470.77 1020.794 7.05 7.04 7.622 2.80521 4.29961 26.67 1470.81 1020.821 7.35 7.34 7.623 2.80857 4.30457 26.70 1470.87 1020.848 7.65 7.64 7.624 2.81060 4.30756 26.72 1470.90 1020.866 7.95 7.94 7.625 2.81117 4.30836 26.73 1470.91 1020.871 8.25 8.24 7.626 2.81413 4.31271 26.76 1470.96 1020.896 8.55 8.54 7.626 2.81728 4.31758 26.79 1471.01 1020.923 8.85 8.84 7.626 2.81867 4.31967 26.80 1471.03 1020.936 9.15 9.14 7.629 2.82120 4.32318 26.83 1471.08 1020.956 9.45 9.44 7.632 2.82449 4.32780 26.86 1471.13 1020.982 9.75 9.74 7.632 2.83006 4.33630 26.92 1471.21 1021.029 10.05 10.04 7.632 2.83581 4.34519 26.98 1471.29 1021.078 10.35 10.34 7.633 2.83719 4.34718 26.99 1471.31 1021.090 10.65 10.63 7.633 2.83855 4.34924 27.01 1471.34 1021.102 10.95 10.93 7.630 2.84026 4.35218 27.03 1471.36 1021.119 11.25 11.23 7.629 2.83991 4.35186 27.02 1471.35 1021.119 11.55 11.53 7.628 2.84015 4.35234 27.03 1471.36 1021.123 11.85 11.83 7.628 2.84095 4.35357 27.04 1471.37 1021.130 12.15 12.13 7.626 2.84108 4.35397 27.04 1471.37 1021.134 12.45 12.43 7.625 2.84125 4.35446 27.04 1471.38 1021.138 12.75 12.73 7.623 2.84175 4.35541 27.05 1471.38 1021.144 13.05 13.03 7.622 2.84146 4.35509 27.05 1471.38 1021.144 13.35 13.33 7.622 2.84202 4.35595 27.05 1471.39 1021.150 13.65 13.63 7.623 2.84212 4.35603 27.05 1471.40 1021.152 13.95 13.93 7.623 2.84241 4.35650 27.05 1471.41 1021.155 14.25 14.23 7.622 2.84320 4.35778 27.06 1471.42 1021.164 14.55 14.53 7.622 2.84374 4.35866 27.07 1471.43 1021.170 14.85 14.83 7.622 2.84420 4.35933 27.07 1471.44 1021.174 15.15 15.13 7.623 2.84553 4.36128 27.09 1471.47 1021.186 15.45 15.43 7.624 2.84609 4.36193 27.09 1471.48 1021.191 15.75 15.73 7.626 2.84698 4.36312 27.10 1471.51 1021.199 16.05 16.02 7.628 2.84876 4.36554 27.12 1471.54 1021.213 16.35 16.32 7.630 2.84990 4.36695 27.13 1471.57 1021.222 16.65 16.62 7.633 2.85383 4.37260 27.16 1471.63 1021.253 16.95 16.92 7.635 2.85861 4.37963 27.21 1471.70 1021.292 17.25 17.22 7.639 2.86158 4.38375 27.24 1471.76 1021.316 17.55 17.52 7.643 2.86655 4.39074 27.29 1471.84 1021.354 17.85 17.82 7.649 2.86972 4.39481 27.32 1471.90 1021.377 18.15 18.12 7.653 2.87336 4.39984 27.35 1471.97 1021.406 18.45 18.42 7.659 2.87762 4.40560 27.39 1472.04 1021.438 18.75 18.72 7.662 2.87861 4.40663 27.40 1472.07 1021.445 19.05 19.02 7.667 2.88128 4.41012 27.43 1472.12 1021.464 19.35 19.32 7.671 2.88630 4.41718 27.48 1472.21 1021.504 19.65 19.62 7.678 2.88748 4.41807 27.48 1472.25 1021.510 19.95 19.92 7.686 2.88986 4.42064 27.50 1472.31 1021.525 20.25 20.22 7.691 2.89443 4.42697 27.55 1472.38 1021.560 20.55 20.52 7.698 2.89550 4.42758 27.55 1472.42 1021.564 20.85 20.82 7.704 2.89637 4.42814 27.55 1472.46 1021.568 21.15 21.11 7.708 2.89857 4.43103 27.57 1472.50 1021.585 21.45 21.41 7.713 2.90044 4.43314 27.59 1472.55 1021.598 21.75 21.71 7.721 2.90261 4.43544 27.61 1472.60 1021.611 22.05 22.01 7.727 2.90422 4.43700 27.62 1472.64 1021.621 22.35 22.31 7.736 2.90966 4.44416 27.67 1472.74 1021.660 22.65 22.61 7.745 2.91276 4.44762 27.69 1472.82 1021.680 22.95 22.91 7.753 2.91564 4.45089 27.72 1472.88 1021.699 23.25 23.21 7.760 2.91765 4.45303 27.73 1472.93 1021.711 23.55 23.51 7.767 2.91933 4.45470 27.74 1472.98 1021.722 23.85 23.81 7.775 2.92088 4.45598 27.75 1473.03 1021.730 24.15 24.11 7.781 2.92149 4.45607 27.75 1473.06 1021.731 24.45 24.41 7.777 2.92291 4.45877 27.77 1473.07 1021.747 24.75 24.71 7.773 2.92342 4.46005 27.78 1473.07 1021.755 25.05 25.01 7.776 2.93242 4.47347 27.87 1473.20 1021.829 25.35 25.31 7.798 2.94361 4.48750 27.97 1473.41 1021.905 25.65 25.61 7.819 2.94576 4.48788 27.98 1473.51 1021.908 25.95 25.90 7.831 2.94938 4.49171 28.01 1473.59 1021.930 26.25 26.20 7.838 2.94983 4.49150 28.01 1473.62 1021.930 26.55 26.50 7.843 2.95555 4.49957 28.06 1473.72 1021.975 26.93 26.88 7.854 2.95758 4.50107 28.07 1473.78 1021.984