*2019/08/26 15:30:08.07 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/07/11 19:41:50.000 END TIME : UTC 2016/07/11 19:42:02.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 65 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.23 2 Depth metres 0.15 19.25 3 Temperature 'deg C (ITS90)' 10.229 17.75 4 Conductivity S/m 1.87208 3.2493 5 Conductance:Specific S/m 2.18956 4.61166 6 Salinity PSS-78 13.11 29.14 7 Speed:Sound m/s 1483.86 1491.55 8 Density kg/m^3 1008.633 1022.435 $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 : 220 LATITUDE : 49 18.89766 N ! (deg min) LONGITUDE : 123 8.25606 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 19:41:15 65 65 HDREDIT2 3.1.1 2017/12/13 11:31:12 ? ? CALIB 12.0 2019/08/26 15:30:08 65 65 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 19:41:14 -HEADER EDITS: 2017/12/13 11:31:12 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 15:30:08 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_20160711_194150 % Cast time (UTC),2016-07-11 19:41:50 % Cast time (local),2016-07-11 19:41:50 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.314961 % Start longitude,-123.137601 % Start altitude,-15.289999961853027 % Start GPS horizontal error(Meter),2.0299999713897705 % Start GPS vertical error(Meter),2.3399999141693115 % Start GPS number of satellites,6 % End latitude,49.3147923 % End longitude,-123.1380293 % End altitude,-15.1899995803833 % End GPS horizontal error(Meter),9.9200000762939453 % End GPS vertical error(Meter),13.449999809265137 % End GPS number of satellites,6 % Cast duration (Seconds),58.4 % 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 17.750 1.87208 2.18956 13.11 1490.26 1008.633 0.45 0.46 17.595 1.90001 2.23032 13.37 1490.07 1008.866 0.75 0.76 17.431 1.93992 2.28598 13.73 1489.97 1009.176 1.05 1.06 17.274 2.02898 2.39978 14.47 1490.32 1009.776 1.35 1.36 17.000 2.12937 2.53496 15.36 1490.46 1010.508 1.65 1.67 16.850 2.23084 2.66529 16.22 1490.97 1011.197 1.95 1.97 16.608 2.36612 2.84333 17.40 1491.55 1012.150 2.25 2.27 16.332 2.42286 2.93096 17.98 1491.34 1012.650 2.55 2.57 16.027 2.50920 3.05801 18.83 1491.33 1013.360 2.85 2.87 15.680 2.55711 3.14295 19.39 1490.85 1013.860 3.15 3.17 15.291 2.61922 3.25038 20.11 1490.41 1014.485 3.45 3.48 15.057 2.68530 3.35182 20.79 1490.43 1015.053 3.75 3.78 14.909 2.73819 3.43055 21.32 1490.56 1015.490 4.05 4.08 14.694 2.76683 3.48520 21.68 1490.28 1015.812 4.35 4.38 14.472 2.80281 3.55035 22.12 1490.05 1016.191 4.65 4.68 14.303 2.83268 3.60369 22.48 1489.91 1016.499 4.95 4.98 14.155 2.85366 3.64407 22.75 1489.73 1016.735 5.25 5.28 13.908 2.87508 3.69475 23.08 1489.30 1017.041 5.55 5.58 13.780 2.88675 3.72194 23.26 1489.08 1017.204 5.85 5.88 13.688 2.89230 3.73794 23.37 1488.90 1017.303 6.15 6.18 13.619 2.89554 3.74881 23.44 1488.75 1017.372 6.45 6.49 13.536 2.90001 3.76277 23.53 1488.58 1017.459 6.75 6.79 13.424 2.90770 3.78368 23.67 1488.37 1017.587 7.05 7.09 13.318 2.91715 3.80646 23.82 1488.19 1017.723 7.35 7.39 13.227 2.93166 3.83454 24.00 1488.10 1017.886 7.65 7.69 13.108 2.95184 3.87298 24.26 1488.00 1018.108 7.95 7.99 12.979 2.97822 3.92082 24.58 1487.95 1018.381 8.25 8.29 12.838 3.00497 3.97078 24.92 1487.86 1018.667 8.55 8.59 12.717 3.02137 4.00528 25.15 1487.72 1018.867 8.85 8.89 12.598 3.03460 4.03561 25.35 1487.55 1019.046 9.15 9.19 12.481 3.04988 4.06852 25.57 1487.41 1019.237 9.45 9.49 12.371 3.06193 4.09670 25.76 1487.26 1019.403 9.75 9.79 12.242 3.07319 4.12600 25.95 1487.04 1019.577 10.05 10.09 12.180 3.07886 4.14045 26.05 1486.95 1019.663 10.35 10.39 12.108 3.08539 4.15735 26.16 1486.83 1019.763 10.65 10.69 12.052 3.09089 4.17102 26.25 1486.75 1019.844 10.95 10.99 12.004 3.09463 4.18151 26.32 1486.66 1019.907 11.25 11.29 11.966 3.09934 4.19218 26.39 1486.62 1019.970 11.55 11.59 11.927 3.10277 4.20119 26.45 1486.56 1020.024 11.85 11.89 11.882 3.10537 4.20985 26.50 1486.48 1020.077 12.15 12.19 11.823 3.10935 4.22203 26.59 1486.37 1020.150 12.45 12.49 11.766 3.11530 4.23663 26.68 1486.29 1020.236 12.75 12.79 11.708 3.12430 4.25558 26.81 1486.24 1020.345 13.05 13.09 11.611 3.14095 4.28963 27.04 1486.17 1020.541 13.35 13.38 11.409 3.15870 4.33778 27.35 1485.85 1020.822 13.65 13.69 11.220 3.17483 4.38270 27.65 1485.53 1021.085 13.95 13.98 11.045 3.19243 4.42833 27.95 1485.28 1021.349 14.25 14.28 10.956 3.20149 4.45196 28.11 1485.15 1021.487 14.55 14.58 10.887 3.21317 4.47677 28.27 1485.11 1021.629 14.85 14.88 10.764 3.22096 4.50310 28.44 1484.88 1021.784 15.15 15.18 10.657 3.21916 4.51412 28.51 1484.58 1021.854 15.45 15.48 10.585 3.22011 4.52451 28.57 1484.40 1021.917 15.75 15.78 10.537 3.22287 4.53448 28.64 1484.31 1021.977 16.05 16.08 10.489 3.22526 4.54402 28.70 1484.22 1022.034 16.35 16.38 10.417 3.22716 4.55593 28.78 1484.05 1022.105 16.65 16.68 10.388 3.23363 4.56877 28.86 1484.06 1022.179 16.95 16.98 10.367 3.23721 4.57657 28.91 1484.05 1022.224 17.25 17.28 10.360 3.23890 4.57992 28.94 1484.05 1022.244 17.55 17.57 10.366 3.23898 4.57918 28.93 1484.08 1022.241 17.85 17.88 10.360 3.24086 4.58263 28.96 1484.09 1022.261 18.15 18.17 10.343 3.24275 4.58759 28.99 1484.07 1022.291 18.45 18.47 10.320 3.24398 4.59232 29.02 1484.03 1022.320 18.75 18.77 10.295 3.24520 4.59728 29.05 1483.98 1022.350 19.05 19.07 10.244 3.24692 4.60637 29.11 1483.87 1022.404 19.23 19.25 10.229 3.24930 4.61166 29.14 1483.86 1022.435