*2019/08/26 15:30:32.28 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 00:12:05.000 END TIME : UTC 2017/03/03 00:12:21.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 85 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 25.44 2 Depth metres 0.15 25.4 3 Temperature 'deg C (ITS90)' 7.403 7.766 4 Conductivity S/m 2.74237 2.94026 5 Conductance:Specific S/m 4.2316 4.48677 6 Salinity PSS-78 26.18 27.96 7 Speed:Sound m/s 1469.24 1473.28 8 Density kg/m^3 1020.431 1021.903 $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 : 312 LATITUDE : 49 18.19713 N ! (deg min) LONGITUDE : 123 4.94668 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 21:04:23 85 85 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 85 85 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:04:23 -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_001205 % Cast time (UTC),2017-03-03 00:12:05 % Cast time (local),2017-03-03 00:12:05 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3032855 % Start longitude,-123.0824447 % Start altitude,-20.190000534057617 % Start GPS horizontal error(Meter),5.0500001907348633 % Start GPS vertical error(Meter),6.3000001907348633 % Start GPS number of satellites,5 % End latitude,49.3031413 % End longitude,-123.0829182 % End altitude,-20.809999465942383 % End GPS horizontal error(Meter),10.630000114440918 % End GPS vertical error(Meter),12.430000305175781 % End GPS number of satellites,5 % Cast duration (Seconds),71.4 % 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 7.403 2.74237 4.23160 26.18 1469.24 1020.431 0.45 0.45 7.409 2.74328 4.23225 26.18 1469.27 1020.436 0.75 0.75 7.410 2.74599 4.23639 26.21 1469.31 1020.459 1.05 1.05 7.413 2.74698 4.23753 26.22 1469.34 1020.466 1.35 1.35 7.415 2.74820 4.23907 26.23 1469.37 1020.476 1.65 1.65 7.419 2.75236 4.24502 26.27 1469.44 1020.509 1.95 1.95 7.420 2.75520 4.24924 26.30 1469.48 1020.533 2.25 2.25 7.423 2.75600 4.25007 26.30 1469.51 1020.538 2.55 2.55 7.424 2.75690 4.25139 26.31 1469.53 1020.547 2.85 2.85 7.425 2.75840 4.25357 26.33 1469.55 1020.560 3.15 3.15 7.425 2.76023 4.25633 26.35 1469.58 1020.576 3.45 3.45 7.422 2.76106 4.25801 26.36 1469.59 1020.586 3.75 3.75 7.420 2.76088 4.25799 26.36 1469.59 1020.587 4.05 4.04 7.420 2.76193 4.25962 26.37 1469.61 1020.597 4.35 4.34 7.422 2.76469 4.26360 26.40 1469.65 1020.620 4.65 4.64 7.425 2.76517 4.26390 26.40 1469.67 1020.623 4.95 4.94 7.429 2.76530 4.26357 26.40 1469.69 1020.622 5.25 5.24 7.429 2.76703 4.26628 26.42 1469.72 1020.638 5.55 5.54 7.425 2.76842 4.26893 26.43 1469.73 1020.653 5.85 5.84 7.428 2.76975 4.27061 26.45 1469.76 1020.664 6.15 6.14 7.434 2.77042 4.27092 26.45 1469.79 1020.667 6.45 6.44 7.440 2.77151 4.27180 26.45 1469.83 1020.673 6.75 6.74 7.445 2.77211 4.27200 26.46 1469.86 1020.675 7.05 7.04 7.450 2.77341 4.27338 26.47 1469.89 1020.683 7.35 7.34 7.453 2.77408 4.27404 26.47 1469.91 1020.688 7.65 7.64 7.455 2.77556 4.27599 26.48 1469.94 1020.700 7.95 7.94 7.455 2.77676 4.27781 26.50 1469.97 1020.711 8.25 8.24 7.458 2.77891 4.28082 26.52 1470.01 1020.728 8.55 8.54 7.461 2.77955 4.28141 26.52 1470.03 1020.733 8.85 8.84 7.463 2.78089 4.28321 26.53 1470.06 1020.744 9.15 9.14 7.467 2.78249 4.28509 26.55 1470.09 1020.755 9.45 9.44 7.469 2.78340 4.28627 26.56 1470.12 1020.762 9.75 9.74 7.470 2.78484 4.28838 26.57 1470.14 1020.775 10.05 10.04 7.471 2.78508 4.28863 26.57 1470.15 1020.778 10.35 10.34 7.471 2.78676 4.29118 26.59 1470.18 1020.793 10.65 10.64 7.471 2.78766 4.29257 26.60 1470.20 1020.801 10.95 10.94 7.472 2.78773 4.29252 26.60 1470.20 1020.802 11.25 11.24 7.472 2.78834 4.29346 26.60 1470.22 1020.809 11.55 11.54 7.473 2.78897 4.29433 26.61 1470.23 1020.815 11.85 11.84 7.474 2.78939 4.29484 26.61 1470.25 1020.819 12.15 12.13 7.473 2.79046 4.29657 26.63 1470.26 1020.829 12.45 12.43 7.473 2.79148 4.29811 26.64 1470.28 1020.839 12.75 12.73 7.474 2.79141 4.29797 26.64 1470.29 1020.839 13.05 13.03 7.474 2.79275 4.29994 26.65 1470.31 1020.851 13.35 13.33 7.476 2.79362 4.30109 26.66 1470.33 1020.858 13.65 13.63 7.478 2.79500 4.30292 26.67 1470.36 1020.870 13.95 13.93 7.479 2.79510 4.30291 26.67 1470.37 1020.871 14.25 14.23 7.480 2.79647 4.30488 26.68 1470.40 1020.883 14.55 14.53 7.481 2.79947 4.30942 26.71 1470.44 1020.908 14.85 14.83 7.482 2.80109 4.31170 26.73 1470.47 1020.922 15.15 15.13 7.484 2.80171 4.31249 26.73 1470.49 1020.927 15.45 15.43 7.485 2.80338 4.31487 26.75 1470.52 1020.941 15.75 15.73 7.488 2.80371 4.31499 26.75 1470.54 1020.943 16.05 16.03 7.490 2.80505 4.31672 26.76 1470.57 1020.954 16.35 16.33 7.493 2.80609 4.31805 26.77 1470.59 1020.962 16.65 16.63 7.495 2.80742 4.31978 26.79 1470.62 1020.973 16.95 16.93 7.496 2.81010 4.32373 26.81 1470.66 1020.995 17.25 17.23 7.498 2.81168 4.32589 26.83 1470.69 1021.008 17.55 17.53 7.501 2.81283 4.32733 26.84 1470.72 1021.017 17.85 17.83 7.502 2.81469 4.33006 26.86 1470.75 1021.033 18.15 18.13 7.503 2.81449 4.32965 26.85 1470.76 1021.032 18.45 18.43 7.504 2.81532 4.33071 26.86 1470.78 1021.039 18.75 18.73 7.504 2.81623 4.33214 26.87 1470.80 1021.048 19.05 19.02 7.503 2.81777 4.33467 26.89 1470.82 1021.063 19.35 19.32 7.501 2.81891 4.33664 26.90 1470.83 1021.074 19.65 19.62 7.501 2.81889 4.33665 26.90 1470.83 1021.076 19.95 19.92 7.499 2.81951 4.33777 26.91 1470.84 1021.083 20.25 20.22 7.499 2.82029 4.33902 26.92 1470.86 1021.091 20.55 20.52 7.500 2.82059 4.33940 26.92 1470.87 1021.094 20.85 20.82 7.502 2.81956 4.33749 26.91 1470.87 1021.085 21.15 21.12 7.506 2.81953 4.33696 26.90 1470.88 1021.084 21.45 21.42 7.511 2.81992 4.33690 26.90 1470.91 1021.085 21.75 21.72 7.530 2.82189 4.33739 26.91 1470.99 1021.088 22.05 22.02 7.561 2.83647 4.35562 27.04 1471.28 1021.187 22.35 22.32 7.578 2.85543 4.38245 27.22 1471.58 1021.332 22.65 22.62 7.583 2.86826 4.40142 27.35 1471.77 1021.435 22.95 22.92 7.582 2.87359 4.40978 27.41 1471.84 1021.481 23.25 23.22 7.594 2.88236 4.42163 27.49 1471.99 1021.546 23.55 23.52 7.623 2.90701 4.45545 27.73 1472.40 1021.729 23.85 23.82 7.667 2.91292 4.45845 27.76 1472.61 1021.745 24.15 24.11 7.702 2.91151 4.45161 27.71 1472.70 1021.709 24.45 24.41 7.720 2.91911 4.46076 27.78 1472.86 1021.759 24.75 24.71 7.733 2.92951 4.47491 27.88 1473.03 1021.836 25.05 25.01 7.746 2.93462 4.48082 27.92 1473.14 1021.869 25.44 25.40 7.766 2.94026 4.48677 27.96 1473.28 1021.903