*2019/08/26 15:30:11.37 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/18 16:24:47.000 END TIME : UTC 2016/10/18 16:24:57.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 52 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.4 2 Depth metres 0.15 15.46 3 Temperature 'deg C (ITS90)' 10.423 10.723 4 Conductivity S/m 0.10694 3.19263 5 Conductance:Specific S/m 0.15094 4.4912 6 Salinity PSS-78 0.75 28.34 7 Speed:Sound m/s 1449.89 1483.96 8 Density kg/m^3 1000.254 1021.74 $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 : 2016-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 398 LATITUDE : 49 7.50318 N ! (deg min) LONGITUDE : 123 12.37738 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1606003 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 22:30:59 52 52 HDREDIT2 3.1.1 2017/12/13 11:31:14 ? ? CALIB 12.0 2019/08/26 15:30:11 52 52 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:30:58 -HEADER EDITS: 2017/12/13 11:31:14 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 15:30:11 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,CC1606003 % File name,CC1606003_20161018_162447 % Cast time (UTC),2016-10-18 16:24:47 % Cast time (local),2016-10-18 16:24:47 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.125053 % Start longitude,-123.2062896 % Start altitude,-21.280000686645508 % Start GPS horizontal error(Meter),10.920000076293945 % Start GPS vertical error(Meter),9.9399995803833 % Start GPS number of satellites,4 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),91.2 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2016-03-01 % Temperature calibration date,2016-02-23 % Pressure calibration date,2016-02-12 % 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 10.423 0.10724 0.15137 0.75 1449.89 1000.254 0.45 0.46 10.424 0.10694 0.15094 0.75 1449.90 1000.254 0.75 0.76 10.426 0.18697 0.26389 1.35 1450.65 1000.723 1.05 1.07 10.431 0.21805 0.30770 1.58 1450.97 1000.908 1.35 1.38 10.437 0.26693 0.37662 1.96 1451.46 1001.204 1.65 1.68 10.444 0.31512 0.44453 2.33 1451.96 1001.498 1.95 1.99 10.457 0.37231 0.52503 2.79 1452.57 1001.850 2.25 2.29 10.469 0.45738 0.64476 3.47 1453.45 1002.381 2.55 2.60 10.499 0.68688 0.96746 5.35 1455.87 1003.844 2.85 2.90 10.547 1.09648 1.54231 8.84 1460.28 1006.548 3.15 3.20 10.589 1.70656 2.39760 14.25 1466.98 1010.743 3.45 3.51 10.628 1.89829 2.66407 15.99 1469.21 1012.084 3.75 3.81 10.645 1.92225 2.69635 16.20 1469.54 1012.248 4.05 4.11 10.651 1.94320 2.72532 16.39 1469.79 1012.396 4.35 4.41 10.655 1.97303 2.76687 16.66 1470.14 1012.608 4.65 4.71 10.661 2.02465 2.83871 17.13 1470.74 1012.975 4.95 5.02 10.671 2.10014 2.94373 17.83 1471.61 1013.513 5.25 5.32 10.683 2.16463 3.03311 18.42 1472.38 1013.972 5.55 5.62 10.691 2.25795 3.16320 19.29 1473.45 1014.644 5.85 5.92 10.700 2.34389 3.28274 20.09 1474.45 1015.264 6.15 6.22 10.707 2.39668 3.35602 20.58 1475.07 1015.646 6.45 6.52 10.713 2.41768 3.38488 20.77 1475.33 1015.797 6.75 6.82 10.717 2.44233 3.41903 21.00 1475.62 1015.977 7.05 7.12 10.720 2.46343 3.44822 21.20 1475.88 1016.130 7.35 7.43 10.723 2.47380 3.46246 21.30 1476.01 1016.206 7.65 7.73 10.721 2.49441 3.49150 21.49 1476.24 1016.359 7.95 8.03 10.714 2.51649 3.52307 21.70 1476.48 1016.527 8.25 8.33 10.703 2.52635 3.53797 21.80 1476.56 1016.607 8.55 8.63 10.686 2.57284 3.60481 22.25 1477.05 1016.961 8.85 8.93 10.670 2.69129 3.77252 23.39 1478.36 1017.849 9.15 9.23 10.652 2.99303 4.19755 26.31 1481.81 1020.118 9.45 9.53 10.626 3.03241 4.25588 26.71 1482.21 1020.435 9.75 9.83 10.606 3.07531 4.31850 27.14 1482.66 1020.776 10.05 10.13 10.590 3.11072 4.37021 27.50 1483.04 1021.058 10.35 10.43 10.577 3.13817 4.41034 27.78 1483.33 1021.277 10.65 10.73 10.573 3.15303 4.43174 27.93 1483.50 1021.395 10.95 11.03 10.563 3.16473 4.44945 28.05 1483.62 1021.493 11.25 11.33 10.562 3.17221 4.46015 28.12 1483.70 1021.552 11.55 11.63 10.552 3.17940 4.47150 28.20 1483.77 1021.616 11.85 11.93 10.548 3.18281 4.47682 28.24 1483.80 1021.646 12.15 12.22 10.546 3.18311 4.47747 28.24 1483.81 1021.651 12.45 12.52 10.543 3.18438 4.47963 28.26 1483.82 1021.664 12.75 12.82 10.542 3.18378 4.47885 28.25 1483.81 1021.661 13.05 13.12 10.541 3.18686 4.48340 28.28 1483.85 1021.688 13.35 13.42 10.540 3.18836 4.48556 28.30 1483.87 1021.701 13.65 13.72 10.541 3.18859 4.48581 28.30 1483.88 1021.703 13.95 14.02 10.543 3.18742 4.48387 28.29 1483.88 1021.694 14.25 14.32 10.543 3.18853 4.48543 28.30 1483.90 1021.703 14.55 14.62 10.540 3.19031 4.48836 28.32 1483.91 1021.721 14.85 14.92 10.542 3.19148 4.48974 28.33 1483.94 1021.730 15.15 15.22 10.544 3.19263 4.49110 28.34 1483.96 1021.738 15.40 15.46 10.540 3.19235 4.49120 28.34 1483.95 1021.740