*2019/08/26 15:30:06.80 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/03/11 18:47:27.000 END TIME : UTC 2016/03/11 18:47:36.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 50 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 14.86 2 Depth metres 0.15 14.93 3 Temperature 'deg C (ITS90)' 6.482 8.533 4 Conductivity S/m 0.27633 2.92602 5 Conductance:Specific S/m 0.43875 4.36429 6 Salinity PSS-78 2.27 27.22 7 Speed:Sound m/s 1435.66 1475.13 8 Density kg/m^3 1001.732 1021.172 $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 : 195 LATITUDE : 49 6.83898 N ! (deg min) LONGITUDE : 123 10.81942 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 19:18:45 50 50 HDREDIT2 3.1.1 2017/12/13 11:31:11 ? ? CALIB 12.0 2019/08/26 15:30:06 50 50 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 19:18:45 -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_184727 % Cast time (UTC),2016-03-11 18:47:27 % Cast time (local),2016-03-11 18:47:27 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.113983 % Start longitude,-123.1803237 % Start altitude,-17.6200008392334 % Start GPS horizontal error(Meter),2.4100000858306885 % Start GPS vertical error(Meter),3.0899999141693115 % Start GPS number of satellites,5 % End latitude,49.1141649 % End longitude,-123.1806391 % End altitude,-14.1899995803833 % End GPS horizontal error(Meter),6.0199999809265137 % End GPS vertical error(Meter),7.9000000953674316 % End GPS number of satellites,5 % Cast duration (Seconds),54.8 % 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 6.482 0.28608 0.45435 2.36 1435.72 1001.799 0.45 0.46 6.491 0.27633 0.43875 2.27 1435.66 1001.732 0.75 0.76 6.508 0.28121 0.44625 2.31 1435.79 1001.765 1.05 1.07 6.544 0.30355 0.48114 2.50 1436.19 1001.918 1.35 1.37 6.601 0.41390 0.65489 3.48 1437.67 1002.684 1.65 1.68 6.618 0.42281 0.66862 3.56 1437.85 1002.746 1.95 1.98 6.633 0.41668 0.65862 3.50 1437.85 1002.702 2.25 2.29 6.657 0.46634 0.73654 3.94 1438.52 1003.052 2.55 2.59 6.680 0.47936 0.75655 4.06 1438.77 1003.143 2.85 2.90 6.751 0.63755 1.00399 5.49 1440.88 1004.271 3.15 3.20 6.836 0.81919 1.28658 7.17 1443.35 1005.586 3.45 3.51 6.931 1.09631 1.71670 9.78 1447.02 1007.635 3.75 3.81 6.994 1.22161 1.90914 10.97 1448.77 1008.568 4.05 4.11 7.110 1.39602 2.17385 12.64 1451.32 1009.865 4.35 4.42 7.205 1.49194 2.31633 13.54 1452.85 1010.569 4.65 4.72 7.332 1.59313 2.46370 14.49 1454.54 1011.300 4.95 5.02 7.437 1.76727 2.72417 16.17 1457.06 1012.608 5.25 5.32 7.498 1.89328 2.91291 17.40 1458.83 1013.566 5.55 5.62 7.562 1.97221 3.02842 18.16 1460.03 1014.155 5.85 5.92 7.653 2.13735 3.27283 19.77 1462.39 1015.410 6.15 6.23 7.888 2.53447 3.85314 23.67 1468.14 1018.435 6.45 6.53 8.000 2.63655 3.99479 24.64 1469.77 1019.182 6.75 6.83 8.082 2.68560 4.05906 25.09 1470.64 1019.522 7.05 7.13 8.141 2.73018 4.11901 25.50 1471.39 1019.841 7.35 7.42 8.212 2.75435 4.14666 25.70 1471.91 1019.987 7.65 7.72 8.305 2.79609 4.19771 26.06 1472.72 1020.258 7.95 8.03 8.337 2.83859 4.25741 26.47 1473.35 1020.578 8.25 8.32 8.361 2.84669 4.26654 26.54 1473.53 1020.627 8.55 8.62 8.385 2.85310 4.27297 26.58 1473.69 1020.662 8.85 8.92 8.409 2.86706 4.29090 26.71 1473.94 1020.758 9.15 9.22 8.418 2.87259 4.29796 26.76 1474.04 1020.797 9.45 9.52 8.434 2.87494 4.29942 26.77 1474.12 1020.806 9.75 9.82 8.451 2.87623 4.29912 26.77 1474.19 1020.805 10.05 10.12 8.466 2.88158 4.30523 26.82 1474.30 1020.838 10.35 10.42 8.473 2.89337 4.32190 26.93 1474.48 1020.929 10.65 10.72 8.482 2.89908 4.32929 26.98 1474.58 1020.969 10.95 11.02 8.493 2.90358 4.33461 27.02 1474.67 1020.999 11.25 11.32 8.495 2.90849 4.34169 27.07 1474.75 1021.038 11.55 11.62 8.495 2.91082 4.34510 27.09 1474.78 1021.058 11.85 11.92 8.498 2.91178 4.34621 27.10 1474.81 1021.065 12.15 12.22 8.504 2.91430 4.34915 27.12 1474.86 1021.082 12.45 12.52 8.510 2.91934 4.35588 27.17 1474.95 1021.119 12.75 12.82 8.519 2.92167 4.35828 27.18 1475.00 1021.133 13.05 13.12 8.533 2.92374 4.35950 27.20 1475.08 1021.140 13.35 13.42 8.519 2.92472 4.36283 27.22 1475.05 1021.160 13.65 13.72 8.506 2.92354 4.36267 27.21 1475.01 1021.161 13.95 14.02 8.504 2.92390 4.36347 27.22 1475.01 1021.166 14.25 14.31 8.504 2.92445 4.36429 27.22 1475.02 1021.172 14.55 14.62 8.508 2.92407 4.36324 27.22 1475.03 1021.168 14.86 14.93 8.532 2.92602 4.36310 27.22 1475.13 1021.167