*2019/08/26 15:30:30.63 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/01 20:25:13.000 END TIME : UTC 2017/03/01 20:25:26.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 67 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.95 2 Depth metres 0.15 19.92 3 Temperature 'deg C (ITS90)' 7.38 7.583 4 Conductivity S/m 2.61475 2.79462 5 Conductance:Specific S/m 4.03757 4.2902 6 Salinity PSS-78 24.86 26.6 7 Speed:Sound m/s 1467.51 1470.73 8 Density kg/m^3 1019.398 1020.807 $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 : 288 LATITUDE : 49 17.69149 N ! (deg min) LONGITUDE : 123 1.14232 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 20:40:31 67 67 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:30 67 67 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:40:31 -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 15:30:30 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_20170301_202513_mid % Cast time (UTC),2017-03-01 20:25:13 % Cast time (local),2017-03-01 20:25:13 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2948581 % Start longitude,-123.0190386 % Start altitude,-20.409999847412109 % Start GPS horizontal error(Meter),4.630000114440918 % Start GPS vertical error(Meter),6.6999998092651367 % Start GPS number of satellites,8 % End latitude,49.2949945 % End longitude,-123.0208827 % End altitude,-22.459999084472656 % End GPS horizontal error(Meter),20.579999923706055 % End GPS vertical error(Meter),23.75 % End GPS number of satellites,7 % Cast duration (Seconds),78 % 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 7.380 2.61475 4.03757 24.86 1467.51 1019.398 0.45 0.45 7.381 2.61892 4.04391 24.90 1467.57 1019.433 0.75 0.75 7.383 2.63090 4.06222 25.02 1467.74 1019.532 1.05 1.05 7.386 2.63273 4.06464 25.04 1467.78 1019.546 1.35 1.35 7.386 2.63250 4.06427 25.04 1467.78 1019.545 1.65 1.65 7.389 2.64141 4.07764 25.13 1467.91 1019.617 1.95 1.95 7.396 2.65571 4.09877 25.27 1468.12 1019.731 2.25 2.25 7.406 2.66835 4.11711 25.40 1468.32 1019.830 2.55 2.55 7.419 2.67209 4.12117 25.43 1468.41 1019.852 2.85 2.85 7.425 2.66408 4.10807 25.34 1468.33 1019.784 3.15 3.15 7.425 2.67758 4.12883 25.48 1468.51 1019.896 3.45 3.45 7.437 2.68075 4.13224 25.51 1468.59 1019.915 3.75 3.75 7.457 2.67991 4.12841 25.48 1468.64 1019.895 4.05 4.05 7.480 2.71410 4.17814 25.82 1469.16 1020.161 4.35 4.35 7.501 2.74567 4.22394 26.14 1469.64 1020.406 4.65 4.65 7.531 2.75376 4.23245 26.20 1469.84 1020.453 4.95 4.95 7.546 2.75978 4.23979 26.25 1469.97 1020.493 5.25 5.25 7.552 2.77066 4.25573 26.36 1470.13 1020.579 5.55 5.55 7.554 2.77957 4.26912 26.45 1470.26 1020.652 5.85 5.85 7.555 2.77947 4.26889 26.45 1470.26 1020.652 6.15 6.15 7.556 2.78016 4.26986 26.46 1470.28 1020.659 6.45 6.45 7.555 2.78131 4.27167 26.47 1470.30 1020.670 6.75 6.75 7.556 2.78094 4.27095 26.46 1470.30 1020.667 7.05 7.04 7.559 2.78286 4.27358 26.48 1470.34 1020.682 7.35 7.34 7.560 2.78708 4.27993 26.53 1470.40 1020.718 7.65 7.64 7.562 2.78990 4.28400 26.55 1470.45 1020.741 7.95 7.94 7.565 2.79157 4.28619 26.57 1470.48 1020.754 8.25 8.24 7.566 2.79342 4.28888 26.59 1470.52 1020.769 8.55 8.54 7.566 2.79191 4.28650 26.57 1470.50 1020.758 8.85 8.84 7.568 2.79251 4.28720 26.58 1470.52 1020.763 9.15 9.14 7.569 2.79096 4.28475 26.56 1470.51 1020.751 9.45 9.44 7.567 2.79141 4.28569 26.57 1470.51 1020.757 9.75 9.74 7.565 2.79295 4.28821 26.58 1470.53 1020.772 10.05 10.04 7.567 2.79354 4.28890 26.59 1470.55 1020.777 10.35 10.34 7.569 2.79424 4.28975 26.59 1470.57 1020.783 10.65 10.64 7.569 2.79457 4.29020 26.60 1470.58 1020.787 10.95 10.94 7.570 2.79321 4.28807 26.58 1470.57 1020.777 11.25 11.24 7.569 2.79225 4.28667 26.57 1470.56 1020.771 11.55 11.54 7.569 2.79308 4.28792 26.58 1470.57 1020.778 11.85 11.84 7.570 2.79399 4.28925 26.59 1470.59 1020.787 12.15 12.14 7.571 2.79420 4.28935 26.59 1470.60 1020.789 12.45 12.44 7.574 2.79450 4.28943 26.59 1470.62 1020.790 12.75 12.74 7.575 2.79345 4.28765 26.58 1470.62 1020.782 13.05 13.04 7.571 2.79371 4.28859 26.58 1470.61 1020.788 13.35 13.34 7.570 2.79407 4.28930 26.59 1470.62 1020.794 13.65 13.64 7.569 2.79396 4.28929 26.59 1470.62 1020.795 13.95 13.94 7.570 2.79388 4.28906 26.59 1470.62 1020.795 14.25 14.23 7.568 2.79327 4.28831 26.58 1470.62 1020.792 14.55 14.54 7.569 2.79318 4.28811 26.58 1470.62 1020.792 14.85 14.83 7.569 2.79318 4.28804 26.58 1470.63 1020.793 15.15 15.13 7.570 2.79398 4.28921 26.59 1470.64 1020.801 15.45 15.43 7.571 2.79462 4.29008 26.59 1470.66 1020.807 15.75 15.73 7.571 2.79398 4.28909 26.59 1470.66 1020.803 16.05 16.03 7.571 2.79324 4.28793 26.58 1470.65 1020.798 16.35 16.33 7.571 2.79351 4.28828 26.58 1470.66 1020.801 16.65 16.63 7.572 2.79338 4.28795 26.58 1470.67 1020.801 16.95 16.93 7.572 2.79333 4.28797 26.58 1470.67 1020.802 17.25 17.23 7.572 2.79286 4.28726 26.57 1470.67 1020.800 17.55 17.53 7.571 2.79296 4.28749 26.57 1470.67 1020.802 17.85 17.83 7.571 2.79350 4.28826 26.58 1470.68 1020.807 18.15 18.13 7.572 2.79295 4.28729 26.57 1470.68 1020.804 18.45 18.43 7.574 2.79236 4.28618 26.57 1470.69 1020.799 18.75 18.73 7.575 2.79283 4.28676 26.57 1470.70 1020.803 19.05 19.03 7.578 2.79289 4.28641 26.57 1470.72 1020.803 19.35 19.33 7.583 2.79297 4.28594 26.57 1470.73 1020.801 19.65 19.63 7.577 2.79215 4.28546 26.56 1470.71 1020.800 19.95 19.92 7.576 2.79207 4.28545 26.56 1470.71 1020.801