*2019/08/26 15:30:06.65 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/03/11 17:17:56.000 END TIME : UTC 2016/03/11 17:18:06.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 54 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.93 2 Depth metres 0.15 15.96 3 Temperature 'deg C (ITS90)' 6.34 8.631 4 Conductivity S/m 0.14593 3.01349 5 Conductance:Specific S/m 0.23282 4.48017 6 Salinity PSS-78 1.16 28.04 7 Speed:Sound m/s 1433.59 1476.53 8 Density kg/m^3 1000.859 1021.799 $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 : 193 LATITUDE : 49 6.95271 N ! (deg min) LONGITUDE : 123 10.98318 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 19:17:03 54 54 HDREDIT2 3.1.1 2017/12/13 11:31:11 ? ? CALIB 12.0 2019/08/26 15:30:06 54 54 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 19:17:03 -HEADER EDITS: 2017/12/13 11:31:11 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 15:30:06 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_20160311_171756 % Cast time (UTC),2016-03-11 17:17:56 % Cast time (local),2016-03-11 17:17:56 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1158785 % Start longitude,-123.183053 % Start altitude,-12.279999732971191 % Start GPS horizontal error(Meter),2.5899999141693115 % Start GPS vertical error(Meter),4.7699999809265137 % Start GPS number of satellites,6 % End latitude,49.1161549 % End longitude,-123.1837069 % End altitude,-15.300000190734863 % End GPS horizontal error(Meter),3.3900001049041748 % End GPS vertical error(Meter),5.0799999237060547 % End GPS number of satellites,6 % Cast duration (Seconds),68.6 % 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 6.340 0.14593 0.23282 1.16 1433.59 1000.859 0.45 0.46 6.367 0.14724 0.23470 1.17 1433.72 1000.867 0.75 0.76 6.410 0.15939 0.25372 1.27 1434.04 1000.946 1.05 1.07 6.519 0.21845 0.34654 1.77 1435.15 1001.337 1.35 1.38 6.669 0.43415 0.68545 3.65 1438.18 1002.818 1.65 1.68 6.790 0.77935 1.22576 6.80 1442.67 1005.295 1.95 1.98 6.862 0.98764 1.54987 8.76 1445.43 1006.829 2.25 2.29 6.976 1.20022 1.87678 10.77 1448.42 1008.404 2.55 2.59 7.160 1.48896 2.31492 13.53 1452.62 1010.555 2.85 2.89 7.349 1.82497 2.82076 16.79 1457.43 1013.091 3.15 3.19 7.421 1.95116 3.00910 18.02 1459.25 1014.050 3.45 3.50 7.554 2.11382 3.24665 19.59 1461.73 1015.268 3.75 3.80 7.679 2.29266 3.50783 21.34 1464.39 1016.620 4.05 4.10 7.820 2.45537 3.74061 22.91 1466.89 1017.835 4.35 4.40 7.915 2.58506 3.92686 24.17 1468.83 1018.816 4.65 4.70 7.989 2.65824 4.02899 24.87 1469.99 1019.357 4.95 5.00 8.047 2.66333 4.02966 24.88 1470.23 1019.359 5.25 5.30 8.110 2.66838 4.02962 24.89 1470.49 1019.358 5.55 5.60 8.153 2.68554 4.05019 25.04 1470.84 1019.467 5.85 5.90 8.189 2.69690 4.06297 25.13 1471.09 1019.536 6.15 6.20 8.211 2.70332 4.06989 25.18 1471.25 1019.573 6.45 6.50 8.239 2.71270 4.08055 25.25 1471.45 1019.630 6.75 6.80 8.262 2.72766 4.10021 25.39 1471.72 1019.735 7.05 7.10 8.282 2.74223 4.11965 25.52 1471.96 1019.839 7.35 7.40 8.300 2.75603 4.13818 25.65 1472.19 1019.939 7.65 7.70 8.319 2.76380 4.14748 25.72 1472.35 1019.989 7.95 8.00 8.349 2.79386 4.18888 26.00 1472.82 1020.210 8.25 8.30 8.365 2.82143 4.22810 26.27 1473.22 1020.421 8.55 8.60 8.379 2.83416 4.24545 26.39 1473.43 1020.514 8.85 8.89 8.392 2.84604 4.26154 26.51 1473.62 1020.601 9.15 9.20 8.404 2.85352 4.27126 26.57 1473.76 1020.654 9.45 9.49 8.415 2.85951 4.27883 26.63 1473.87 1020.696 9.75 9.79 8.429 2.86400 4.28365 26.66 1473.97 1020.722 10.05 10.09 8.440 2.86926 4.29022 26.71 1474.07 1020.759 10.35 10.39 8.451 2.87627 4.29929 26.77 1474.20 1020.808 10.65 10.69 8.470 2.89472 4.32430 26.95 1474.49 1020.943 10.95 10.99 8.498 2.92546 4.36659 27.24 1474.96 1021.171 11.25 11.29 8.519 2.95471 4.40746 27.52 1475.40 1021.391 11.55 11.59 8.535 2.97563 4.43663 27.73 1475.71 1021.549 11.85 11.89 8.546 2.98366 4.44707 27.80 1475.85 1021.606 12.15 12.19 8.558 2.98955 4.45424 27.85 1475.96 1021.646 12.45 12.49 8.581 2.99635 4.46144 27.90 1476.12 1021.685 12.75 12.79 8.589 3.00054 4.46651 27.94 1476.20 1021.713 13.05 13.09 8.596 3.00306 4.46942 27.96 1476.25 1021.730 13.35 13.39 8.599 3.00486 4.47162 27.98 1476.29 1021.743 13.65 13.69 8.603 3.00642 4.47338 27.99 1476.33 1021.754 13.95 13.99 8.606 3.00620 4.47271 27.98 1476.34 1021.751 14.25 14.29 8.606 3.00647 4.47317 27.99 1476.34 1021.755 14.55 14.58 8.604 3.00747 4.47489 28.00 1476.36 1021.766 14.85 14.88 8.602 3.00821 4.47619 28.01 1476.37 1021.774 15.15 15.18 8.602 3.00899 4.47733 28.02 1476.38 1021.782 15.45 15.48 8.605 3.00992 4.47832 28.02 1476.41 1021.788 15.75 15.78 8.609 3.01088 4.47931 28.03 1476.43 1021.795 15.93 15.96 8.631 3.01349 4.48017 28.04 1476.53 1021.799