*2019/08/26 15:30:32.22 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 00:08:26.000 END TIME : UTC 2017/03/03 00:08:39.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 69 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.48 2 Depth metres 0.15 20.45 3 Temperature 'deg C (ITS90)' 7.336 7.446 4 Conductivity S/m 2.75879 2.81102 5 Conductance:Specific S/m 4.26526 4.33228 6 Salinity PSS-78 26.4 26.86 7 Speed:Sound m/s 1469.27 1470.58 8 Density kg/m^3 1020.613 1021.055 $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 : 311 LATITUDE : 49 18.43701 N ! (deg min) LONGITUDE : 123 4.90239 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 21:03:26 69 69 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 69 69 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:03:26 -HEADER EDITS: 2017/12/13 11:33:18 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 15:30:32 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_20170303_000826 % Cast time (UTC),2017-03-03 00:08:26 % Cast time (local),2017-03-03 00:08:26 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3072835 % Start longitude,-123.0817065 % Start altitude,-24.909999847412109 % Start GPS horizontal error(Meter),10.260000228881836 % Start GPS vertical error(Meter),12.449999809265137 % Start GPS number of satellites,5 % End latitude,49.3071654 % End longitude,-123.0817774 % End altitude,-26.459999084472656 % End GPS horizontal error(Meter),7.5799999237060547 % End GPS vertical error(Meter),9.8999996185302734 % End GPS number of satellites,5 % Cast duration (Seconds),63.6 % 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 7.336 2.76021 4.26798 26.42 1469.27 1020.626 0.45 0.45 7.340 2.75879 4.26526 26.40 1469.27 1020.613 0.75 0.75 7.344 2.75947 4.26578 26.40 1469.30 1020.617 1.05 1.05 7.349 2.76091 4.26732 26.41 1469.33 1020.627 1.35 1.35 7.355 2.76168 4.26781 26.42 1469.37 1020.630 1.65 1.65 7.364 2.76291 4.26843 26.42 1469.41 1020.635 1.95 1.95 7.374 2.76380 4.26857 26.43 1469.46 1020.637 2.25 2.25 7.378 2.76415 4.26852 26.43 1469.48 1020.638 2.55 2.55 7.376 2.76445 4.26929 26.43 1469.48 1020.643 2.85 2.85 7.374 2.76443 4.26952 26.43 1469.48 1020.646 3.15 3.15 7.370 2.76442 4.27005 26.43 1469.47 1020.650 3.45 3.45 7.366 2.76473 4.27098 26.44 1469.47 1020.656 3.75 3.75 7.363 2.76505 4.27189 26.45 1469.47 1020.662 4.05 4.04 7.363 2.76556 4.27270 26.45 1469.48 1020.668 4.35 4.34 7.362 2.76640 4.27414 26.46 1469.50 1020.677 4.65 4.64 7.359 2.76659 4.27481 26.46 1469.49 1020.682 4.95 4.94 7.356 2.76685 4.27567 26.47 1469.49 1020.688 5.25 5.24 7.352 2.76689 4.27619 26.47 1469.49 1020.692 5.55 5.54 7.351 2.76791 4.27797 26.48 1469.50 1020.703 5.85 5.84 7.351 2.76800 4.27811 26.48 1469.51 1020.705 6.15 6.14 7.350 2.76807 4.27835 26.49 1469.51 1020.708 6.45 6.44 7.349 2.76827 4.27876 26.49 1469.51 1020.711 6.75 6.74 7.348 2.76821 4.27881 26.49 1469.52 1020.713 7.05 7.04 7.349 2.76852 4.27916 26.49 1469.53 1020.716 7.35 7.34 7.348 2.76897 4.27994 26.50 1469.54 1020.721 7.65 7.64 7.349 2.76997 4.28137 26.51 1469.56 1020.730 7.95 7.94 7.349 2.77041 4.28206 26.51 1469.57 1020.735 8.25 8.24 7.349 2.76980 4.28112 26.50 1469.56 1020.732 8.55 8.54 7.351 2.77073 4.28234 26.51 1469.59 1020.739 8.85 8.84 7.354 2.77110 4.28247 26.51 1469.60 1020.741 9.15 9.14 7.354 2.77168 4.28337 26.52 1469.62 1020.747 9.45 9.44 7.354 2.77200 4.28384 26.52 1469.63 1020.751 9.75 9.74 7.352 2.77195 4.28400 26.52 1469.62 1020.753 10.05 10.04 7.352 2.77212 4.28435 26.53 1469.63 1020.757 10.35 10.34 7.352 2.77238 4.28477 26.53 1469.64 1020.760 10.65 10.64 7.349 2.77246 4.28520 26.53 1469.64 1020.764 10.95 10.94 7.351 2.77311 4.28593 26.54 1469.66 1020.769 11.25 11.23 7.353 2.77511 4.28874 26.56 1469.69 1020.785 11.55 11.54 7.355 2.77580 4.28957 26.56 1469.71 1020.791 11.85 11.84 7.356 2.77715 4.29150 26.57 1469.74 1020.803 12.15 12.13 7.357 2.77721 4.29145 26.57 1469.75 1020.804 12.45 12.43 7.359 2.77748 4.29165 26.58 1469.76 1020.806 12.75 12.73 7.362 2.77868 4.29312 26.59 1469.79 1020.815 13.05 13.03 7.368 2.78243 4.29810 26.62 1469.86 1020.843 13.35 13.33 7.379 2.78798 4.30521 26.67 1469.97 1020.882 13.65 13.63 7.389 2.78938 4.30612 26.68 1470.02 1020.888 13.95 13.93 7.394 2.79036 4.30697 26.68 1470.05 1020.894 14.25 14.23 7.396 2.79113 4.30786 26.69 1470.08 1020.900 14.55 14.53 7.400 2.79644 4.31548 26.74 1470.16 1020.942 14.85 14.83 7.402 2.79941 4.31979 26.77 1470.21 1020.966 15.15 15.13 7.408 2.80077 4.32116 26.78 1470.25 1020.975 15.45 15.43 7.415 2.80132 4.32104 26.78 1470.29 1020.975 15.75 15.73 7.417 2.80199 4.32179 26.79 1470.30 1020.981 16.05 16.03 7.416 2.80206 4.32205 26.79 1470.31 1020.983 16.35 16.33 7.414 2.80230 4.32261 26.79 1470.31 1020.988 16.65 16.63 7.412 2.80221 4.32275 26.79 1470.31 1020.990 16.95 16.93 7.413 2.80302 4.32394 26.80 1470.32 1020.997 17.25 17.23 7.416 2.80298 4.32350 26.80 1470.34 1020.996 17.55 17.53 7.419 2.80384 4.32436 26.81 1470.36 1021.002 17.85 17.82 7.426 2.80459 4.32462 26.81 1470.40 1021.005 18.15 18.12 7.427 2.80567 4.32614 26.82 1470.42 1021.014 18.45 18.42 7.424 2.80719 4.32893 26.84 1470.43 1021.031 18.75 18.72 7.427 2.80794 4.32968 26.84 1470.46 1021.036 19.05 19.02 7.438 2.81063 4.33228 26.86 1470.53 1021.051 19.35 19.32 7.444 2.80941 4.32968 26.84 1470.54 1021.038 19.65 19.62 7.442 2.81033 4.33125 26.86 1470.55 1021.048 19.95 19.92 7.443 2.80997 4.33066 26.85 1470.55 1021.046 20.25 20.22 7.443 2.81043 4.33134 26.86 1470.56 1021.051 20.48 20.45 7.446 2.81102 4.33191 26.86 1470.58 1021.055