*2019/08/26 15:30:32.05 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 18:24:44.000 END TIME : UTC 2017/03/02 18:24:59.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 78 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.39 2 Depth metres 0.15 23.36 3 Temperature 'deg C (ITS90)' 7.288 7.513 4 Conductivity S/m 2.74986 2.81088 5 Conductance:Specific S/m 4.2576 4.32337 6 Salinity PSS-78 26.34 26.81 7 Speed:Sound m/s 1469.04 1470.82 8 Density kg/m^3 1020.585 1021.017 $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 : 308 LATITUDE : 49 17.89072 N ! (deg min) LONGITUDE : 123 3.64076 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 21:00:30 78 78 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:32 78 78 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:00:29 -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 15:30:32 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_20170302_182444_mid % Cast time (UTC),2017-03-02 18:24:44 % Cast time (local),2017-03-02 18:24:44 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2981786 % Start longitude,-123.0606793 % Start altitude,-21.809999465942383 % Start GPS horizontal error(Meter),8.0799999237060547 % Start GPS vertical error(Meter),12.859999656677246 % Start GPS number of satellites,6 % End latitude,49.298014 % End longitude,-123.0610405 % End altitude,-13.140000343322754 % End GPS horizontal error(Meter),8.15999984741211 % End GPS vertical error(Meter),11.920000076293945 % End GPS number of satellites,6 % Cast duration (Seconds),61.8 % 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 7.296 2.75249 4.26139 26.37 1469.05 1020.592 0.45 0.45 7.294 2.75162 4.26026 26.36 1469.04 1020.587 0.75 0.75 7.293 2.75137 4.26002 26.36 1469.04 1020.587 1.05 1.05 7.293 2.75277 4.26217 26.37 1469.06 1020.600 1.35 1.35 7.292 2.75254 4.26201 26.37 1469.06 1020.600 1.65 1.65 7.293 2.75198 4.26091 26.36 1469.06 1020.596 1.95 1.95 7.293 2.75207 4.26116 26.36 1469.06 1020.598 2.25 2.25 7.292 2.75179 4.26081 26.36 1469.06 1020.598 2.55 2.55 7.292 2.75225 4.26152 26.36 1469.07 1020.603 2.85 2.85 7.292 2.75232 4.26158 26.37 1469.08 1020.605 3.15 3.15 7.294 2.74986 4.25760 26.34 1469.06 1020.585 3.45 3.45 7.295 2.75222 4.26111 26.36 1469.09 1020.605 3.75 3.75 7.295 2.75234 4.26130 26.36 1469.10 1020.607 4.05 4.04 7.294 2.75219 4.26117 26.36 1469.10 1020.607 4.35 4.34 7.293 2.75252 4.26175 26.37 1469.11 1020.612 4.65 4.64 7.290 2.75266 4.26241 26.37 1469.11 1020.617 4.95 4.94 7.288 2.75316 4.26338 26.38 1469.11 1020.623 5.25 5.24 7.289 2.75358 4.26396 26.38 1469.12 1020.628 5.55 5.54 7.289 2.75303 4.26311 26.38 1469.12 1020.624 5.85 5.84 7.290 2.75291 4.26281 26.37 1469.13 1020.624 6.15 6.14 7.290 2.75309 4.26312 26.38 1469.13 1020.627 6.45 6.44 7.289 2.75296 4.26296 26.37 1469.14 1020.628 6.75 6.74 7.291 2.75323 4.26316 26.38 1469.15 1020.630 7.05 7.04 7.292 2.75325 4.26309 26.37 1469.16 1020.631 7.35 7.34 7.292 2.75364 4.26364 26.38 1469.17 1020.635 7.65 7.64 7.294 2.75353 4.26320 26.38 1469.18 1020.634 7.95 7.94 7.297 2.75395 4.26343 26.38 1469.20 1020.636 8.25 8.24 7.302 2.75396 4.26281 26.37 1469.21 1020.634 8.55 8.54 7.311 2.75389 4.26154 26.37 1469.25 1020.629 8.85 8.84 7.320 2.75518 4.26228 26.37 1469.30 1020.634 9.15 9.14 7.326 2.75807 4.26604 26.40 1469.35 1020.655 9.45 9.44 7.330 2.75993 4.26838 26.41 1469.39 1020.669 9.75 9.74 7.330 2.76135 4.27062 26.43 1469.42 1020.682 10.05 10.04 7.328 2.76150 4.27104 26.43 1469.42 1020.686 10.35 10.34 7.329 2.76190 4.27158 26.44 1469.43 1020.690 10.65 10.64 7.328 2.76240 4.27241 26.44 1469.44 1020.696 10.95 10.94 7.329 2.76240 4.27238 26.44 1469.45 1020.697 11.25 11.24 7.329 2.76302 4.27325 26.45 1469.46 1020.703 11.55 11.54 7.331 2.76424 4.27493 26.46 1469.49 1020.713 11.85 11.84 7.334 2.76410 4.27430 26.45 1469.50 1020.711 12.15 12.13 7.337 2.76562 4.27620 26.47 1469.54 1020.722 12.45 12.44 7.345 2.76905 4.28052 26.50 1469.61 1020.747 12.75 12.73 7.360 2.77085 4.28124 26.50 1469.68 1020.752 13.05 13.03 7.371 2.77133 4.28055 26.50 1469.72 1020.749 13.35 13.33 7.377 2.77188 4.28069 26.50 1469.75 1020.751 13.65 13.63 7.382 2.77214 4.28041 26.50 1469.78 1020.751 13.95 13.93 7.388 2.77318 4.28118 26.51 1469.81 1020.756 14.25 14.23 7.394 2.77455 4.28248 26.52 1469.85 1020.764 14.55 14.53 7.401 2.77486 4.28212 26.52 1469.88 1020.763 14.85 14.83 7.406 2.77657 4.28398 26.53 1469.93 1020.775 15.15 15.13 7.414 2.77955 4.28762 26.55 1469.99 1020.795 15.45 15.43 7.421 2.78142 4.28949 26.57 1470.04 1020.806 15.75 15.73 7.428 2.78548 4.29484 26.61 1470.12 1020.836 16.05 16.03 7.438 2.78763 4.29692 26.62 1470.18 1020.849 16.35 16.33 7.447 2.78929 4.29824 26.63 1470.24 1020.857 16.65 16.63 7.456 2.79071 4.29927 26.64 1470.29 1020.863 16.95 16.93 7.461 2.79182 4.30024 26.65 1470.32 1020.870 17.25 17.23 7.466 2.79140 4.29899 26.64 1470.33 1020.864 17.55 17.53 7.469 2.79304 4.30104 26.65 1470.37 1020.877 17.85 17.83 7.473 2.79335 4.30109 26.65 1470.39 1020.878 18.15 18.13 7.476 2.79559 4.30409 26.68 1470.43 1020.895 18.45 18.43 7.482 2.79855 4.30786 26.70 1470.49 1020.917 18.75 18.73 7.486 2.80040 4.31011 26.72 1470.54 1020.930 19.05 19.02 7.488 2.80072 4.31039 26.72 1470.55 1020.933 19.35 19.32 7.489 2.80191 4.31208 26.73 1470.57 1020.943 19.65 19.62 7.491 2.80222 4.31231 26.73 1470.59 1020.946 19.95 19.92 7.495 2.80384 4.31427 26.75 1470.63 1020.957 20.25 20.22 7.501 2.80591 4.31669 26.76 1470.67 1020.971 20.55 20.52 7.502 2.80602 4.31675 26.76 1470.68 1020.973 20.85 20.82 7.502 2.80635 4.31723 26.77 1470.69 1020.977 21.15 21.12 7.500 2.80663 4.31788 26.77 1470.70 1020.982 21.45 21.42 7.500 2.80736 4.31904 26.78 1470.71 1020.989 21.75 21.72 7.501 2.80676 4.31795 26.77 1470.71 1020.985 22.05 22.02 7.503 2.80963 4.32214 26.80 1470.76 1021.008 22.35 22.32 7.508 2.81088 4.32337 26.81 1470.79 1021.016 22.65 22.62 7.511 2.80991 4.32142 26.80 1470.80 1021.007 22.95 22.92 7.512 2.81054 4.32236 26.80 1470.81 1021.013 23.39 23.36 7.513 2.81082 4.32263 26.80 1470.82 1021.017