*2019/08/26 15:30:31.80 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 18:12:37.000 END TIME : UTC 2017/03/02 18:12:52.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 76 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.71 2 Depth metres 0.15 22.67 3 Temperature 'deg C (ITS90)' 7.297 7.478 4 Conductivity S/m 2.7597 2.82887 5 Conductance:Specific S/m 4.27239 4.35534 6 Salinity PSS-78 26.44 27.02 7 Speed:Sound m/s 1469.15 1470.94 8 Density kg/m^3 1020.651 1021.188 $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 : 304 LATITUDE : 49 18.42640 N ! (deg min) LONGITUDE : 123 4.87073 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 20:56:40 76 76 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:31 76 76 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:56:40 -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 15:30:31 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_181237 % Cast time (UTC),2017-03-02 18:12:37 % Cast time (local),2017-03-02 18:12:37 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3071066 % Start longitude,-123.0811788 % Start altitude,-25.459999084472656 % Start GPS horizontal error(Meter),9.8599996566772461 % Start GPS vertical error(Meter),13.529999732971191 % Start GPS number of satellites,6 % End latitude,49.307273 % End longitude,-123.0820762 % End altitude,-9.3999996185302734 % End GPS horizontal error(Meter),10.430000305175781 % End GPS vertical error(Meter),17.059999465942383 % End GPS number of satellites,5 % Cast duration (Seconds),70.8 % 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 7.297 2.75970 4.27239 26.44 1469.15 1020.651 0.45 0.45 7.298 2.76036 4.27328 26.45 1469.16 1020.657 0.75 0.75 7.300 2.76087 4.27380 26.45 1469.18 1020.661 1.05 1.05 7.301 2.76159 4.27484 26.46 1469.20 1020.668 1.35 1.35 7.301 2.76190 4.27526 26.46 1469.21 1020.671 1.65 1.65 7.301 2.76211 4.27560 26.46 1469.21 1020.674 1.95 1.95 7.301 2.76204 4.27553 26.46 1469.22 1020.675 2.25 2.25 7.301 2.76208 4.27558 26.46 1469.22 1020.677 2.55 2.55 7.300 2.76199 4.27550 26.46 1469.22 1020.678 2.85 2.85 7.302 2.76358 4.27777 26.48 1469.26 1020.691 3.15 3.15 7.305 2.76376 4.27766 26.48 1469.27 1020.692 3.45 3.45 7.308 2.76533 4.27962 26.49 1469.31 1020.703 3.75 3.75 7.312 2.76650 4.28095 26.50 1469.34 1020.712 4.05 4.04 7.316 2.76789 4.28253 26.51 1469.37 1020.721 4.35 4.34 7.321 2.77086 4.28644 26.54 1469.43 1020.744 4.65 4.64 7.322 2.77314 4.28989 26.56 1469.47 1020.763 4.95 4.94 7.323 2.77539 4.29320 26.59 1469.51 1020.782 5.25 5.24 7.326 2.77650 4.29457 26.59 1469.53 1020.791 5.55 5.54 7.329 2.77757 4.29586 26.60 1469.56 1020.799 5.85 5.84 7.332 2.77786 4.29589 26.60 1469.58 1020.800 6.15 6.14 7.339 2.77959 4.29756 26.62 1469.63 1020.811 6.45 6.44 7.346 2.78003 4.29735 26.62 1469.66 1020.811 6.75 6.74 7.349 2.78171 4.29954 26.63 1469.69 1020.824 7.05 7.04 7.351 2.78360 4.30221 26.65 1469.73 1020.839 7.35 7.34 7.353 2.78456 4.30346 26.66 1469.75 1020.847 7.65 7.64 7.356 2.78516 4.30394 26.66 1469.78 1020.851 7.95 7.94 7.361 2.78492 4.30291 26.66 1469.79 1020.847 8.25 8.24 7.364 2.78584 4.30386 26.66 1469.82 1020.853 8.55 8.54 7.365 2.78781 4.30678 26.68 1469.85 1020.870 8.85 8.84 7.364 2.78686 4.30545 26.67 1469.84 1020.864 9.15 9.14 7.366 2.78614 4.30413 26.66 1469.84 1020.858 9.45 9.44 7.366 2.78780 4.30662 26.68 1469.87 1020.873 9.75 9.74 7.372 2.78810 4.30630 26.68 1469.89 1020.872 10.05 10.04 7.376 2.78944 4.30789 26.69 1469.93 1020.882 10.35 10.34 7.377 2.79033 4.30914 26.70 1469.95 1020.890 10.65 10.63 7.379 2.79048 4.30909 26.70 1469.96 1020.891 10.95 10.94 7.381 2.79049 4.30885 26.70 1469.97 1020.891 11.25 11.23 7.383 2.79104 4.30946 26.70 1469.99 1020.896 11.55 11.53 7.386 2.79182 4.31027 26.71 1470.01 1020.901 11.85 11.83 7.389 2.79240 4.31079 26.71 1470.03 1020.905 12.15 12.13 7.392 2.79238 4.31030 26.71 1470.05 1020.904 12.45 12.43 7.396 2.79290 4.31060 26.71 1470.07 1020.907 12.75 12.73 7.398 2.79492 4.31337 26.73 1470.11 1020.923 13.05 13.03 7.402 2.79469 4.31256 26.72 1470.12 1020.920 13.35 13.33 7.404 2.79651 4.31511 26.74 1470.15 1020.935 13.65 13.63 7.405 2.79741 4.31633 26.75 1470.17 1020.943 13.95 13.93 7.406 2.79666 4.31503 26.74 1470.17 1020.937 14.25 14.23 7.406 2.79713 4.31581 26.75 1470.18 1020.942 14.55 14.53 7.407 2.79741 4.31605 26.75 1470.20 1020.945 14.85 14.83 7.408 2.79730 4.31575 26.75 1470.20 1020.945 15.15 15.13 7.411 2.79806 4.31657 26.75 1470.22 1020.950 15.45 15.43 7.411 2.79816 4.31664 26.75 1470.23 1020.952 15.75 15.73 7.413 2.79961 4.31861 26.77 1470.26 1020.964 16.05 16.03 7.414 2.79933 4.31810 26.76 1470.27 1020.962 16.35 16.33 7.415 2.79994 4.31891 26.77 1470.28 1020.968 16.65 16.63 7.420 2.80074 4.31944 26.77 1470.31 1020.972 16.95 16.93 7.425 2.80451 4.32454 26.81 1470.38 1021.001 17.25 17.23 7.429 2.80487 4.32464 26.81 1470.40 1021.002 17.55 17.52 7.434 2.80585 4.32553 26.82 1470.43 1021.008 17.85 17.82 7.437 2.80755 4.32772 26.83 1470.47 1021.021 18.15 18.12 7.440 2.80903 4.32957 26.84 1470.50 1021.032 18.45 18.42 7.445 2.81098 4.33186 26.86 1470.55 1021.046 18.75 18.72 7.448 2.81136 4.33207 26.86 1470.57 1021.048 19.05 19.02 7.449 2.81172 4.33257 26.86 1470.58 1021.052 19.35 19.32 7.448 2.81048 4.33071 26.85 1470.57 1021.044 19.65 19.62 7.449 2.81089 4.33127 26.86 1470.58 1021.048 19.95 19.92 7.446 2.81121 4.33211 26.86 1470.58 1021.054 20.25 20.22 7.443 2.80839 4.32825 26.83 1470.54 1021.034 20.55 20.52 7.440 2.80790 4.32789 26.83 1470.52 1021.034 20.85 20.82 7.441 2.80982 4.33069 26.85 1470.56 1021.050 21.15 21.12 7.445 2.81180 4.33318 26.87 1470.60 1021.065 21.45 21.42 7.448 2.81157 4.33239 26.86 1470.61 1021.062 21.75 21.72 7.451 2.81432 4.33626 26.89 1470.66 1021.084 22.05 22.02 7.453 2.81917 4.34344 26.94 1470.73 1021.123 22.35 22.32 7.463 2.82779 4.35534 27.02 1470.88 1021.188 22.71 22.67 7.478 2.82887 4.35511 27.02 1470.94 1021.188