*2019/08/26 15:30:34.05 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 19:12:08.000 END TIME : UTC 2017/03/03 19:12:19.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 58 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.28 2 Depth metres 0.15 17.25 3 Temperature 'deg C (ITS90)' 7.274 7.71 4 Conductivity S/m 2.71018 2.90616 5 Conductance:Specific S/m 4.19871 4.44244 6 Salinity PSS-78 25.94 27.66 7 Speed:Sound m/s 1468.43 1472.54 8 Density kg/m^3 1020.257 1021.629 $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 : 340 LATITUDE : 49 17.40259 N ! (deg min) LONGITUDE : 123 6.77405 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 21:32:22 58 58 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:34 58 58 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:32:21 -HEADER EDITS: 2017/12/13 11:33:19 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 15:30:34 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_191208 % Cast time (UTC),2017-03-03 19:12:08 % Cast time (local),2017-03-03 19:12:08 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2900432 % Start longitude,-123.1129009 % Start altitude,-18.829999923706055 % Start GPS horizontal error(Meter),1.4800000190734863 % Start GPS vertical error(Meter),2.6400001049041748 % Start GPS number of satellites,8 % End latitude,49.2896988 % End longitude,-123.1127341 % End altitude,19.969999313354492 % End GPS horizontal error(Meter),12.539999961853027 % End GPS vertical error(Meter),22.1299991607666 % End GPS number of satellites,6 % Cast duration (Seconds),59.8 % 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 7.274 2.71018 4.19871 25.94 1468.43 1020.257 0.45 0.45 7.279 2.71126 4.19974 25.94 1468.46 1020.264 0.75 0.75 7.283 2.71490 4.20481 25.98 1468.53 1020.292 1.05 1.05 7.286 2.71662 4.20710 26.00 1468.57 1020.306 1.35 1.35 7.289 2.71539 4.20486 25.98 1468.56 1020.295 1.65 1.65 7.291 2.71997 4.21162 26.03 1468.63 1020.333 1.95 1.95 7.292 2.72238 4.21523 26.05 1468.67 1020.353 2.25 2.25 7.293 2.72574 4.22032 26.09 1468.72 1020.382 2.55 2.55 7.298 2.72764 4.22258 26.10 1468.77 1020.395 2.85 2.85 7.310 2.73038 4.22527 26.12 1468.85 1020.410 3.15 3.15 7.326 2.73732 4.23393 26.18 1468.99 1020.458 3.45 3.45 7.336 2.74905 4.25072 26.30 1469.18 1020.548 3.75 3.75 7.355 2.75785 4.26187 26.38 1469.35 1020.609 4.05 4.05 7.372 2.76061 4.26390 26.39 1469.44 1020.621 4.35 4.35 7.382 2.76253 4.26552 26.40 1469.51 1020.631 4.65 4.64 7.388 2.76562 4.26946 26.43 1469.57 1020.653 4.95 4.95 7.397 2.76999 4.27508 26.47 1469.66 1020.684 5.25 5.24 7.405 2.77288 4.27843 26.50 1469.72 1020.703 5.55 5.54 7.415 2.77483 4.28022 26.51 1469.78 1020.714 5.85 5.84 7.424 2.77663 4.28172 26.52 1469.84 1020.723 6.15 6.14 7.433 2.78028 4.28623 26.55 1469.91 1020.749 6.45 6.44 7.439 2.78433 4.29162 26.59 1469.99 1020.779 6.75 6.74 7.448 2.78841 4.29678 26.63 1470.08 1020.807 7.05 7.04 7.457 2.79052 4.29879 26.64 1470.14 1020.819 7.35 7.34 7.466 2.79245 4.30053 26.65 1470.19 1020.830 7.65 7.64 7.474 2.79413 4.30208 26.66 1470.24 1020.839 7.95 7.94 7.485 2.79506 4.30204 26.67 1470.29 1020.840 8.25 8.24 7.497 2.79785 4.30477 26.69 1470.37 1020.856 8.55 8.54 7.508 2.80614 4.31610 26.77 1470.51 1020.918 8.85 8.84 7.521 2.81573 4.32905 26.86 1470.68 1020.988 9.15 9.14 7.536 2.83013 4.34927 27.00 1470.92 1021.097 9.45 9.44 7.555 2.83804 4.35887 27.06 1471.08 1021.150 9.75 9.74 7.571 2.84304 4.36435 27.10 1471.20 1021.180 10.05 10.04 7.591 2.85067 4.37347 27.17 1471.36 1021.230 10.35 10.34 7.608 2.86346 4.39074 27.29 1471.58 1021.324 10.65 10.64 7.622 2.87575 4.40764 27.41 1471.79 1021.416 10.95 10.94 7.638 2.88355 4.41748 27.48 1471.94 1021.470 11.25 11.23 7.648 2.88636 4.42036 27.50 1472.01 1021.486 11.55 11.53 7.658 2.88995 4.42458 27.53 1472.09 1021.510 11.85 11.83 7.664 2.89047 4.42450 27.53 1472.12 1021.511 12.15 12.13 7.669 2.89202 4.42620 27.54 1472.16 1021.521 12.45 12.43 7.674 2.89375 4.42826 27.55 1472.20 1021.533 12.75 12.73 7.679 2.89639 4.43159 27.58 1472.26 1021.553 13.05 13.03 7.686 2.89819 4.43338 27.59 1472.31 1021.563 13.35 13.33 7.693 2.90023 4.43550 27.61 1472.36 1021.576 13.65 13.63 7.698 2.90245 4.43826 27.63 1472.40 1021.592 13.95 13.93 7.701 2.90347 4.43937 27.63 1472.43 1021.599 14.25 14.23 7.702 2.90428 4.44049 27.64 1472.45 1021.606 14.55 14.53 7.703 2.90358 4.43929 27.63 1472.45 1021.601 14.85 14.83 7.704 2.90466 4.44086 27.64 1472.47 1021.611 15.15 15.13 7.706 2.90545 4.44178 27.65 1472.49 1021.617 15.45 15.43 7.707 2.90523 4.44135 27.65 1472.49 1021.616 15.75 15.72 7.707 2.90540 4.44160 27.65 1472.50 1021.619 16.05 16.02 7.707 2.90560 4.44184 27.65 1472.51 1021.621 16.35 16.32 7.708 2.90567 4.44184 27.65 1472.52 1021.623 16.65 16.62 7.708 2.90610 4.44244 27.66 1472.53 1021.627 16.95 16.92 7.709 2.90586 4.44201 27.65 1472.53 1021.626 17.28 17.25 7.710 2.90616 4.44234 27.65 1472.54 1021.629