*2019/08/26 15:30:39.00 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 18:14:02.000 END TIME : UTC 2017/06/23 18:14:12.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 51 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.19 2 Depth metres 0.15 15.25 3 Temperature 'deg C (ITS90)' 11.22 14.33 4 Conductivity S/m 2.24941 2.80056 5 Conductance:Specific S/m 2.85966 3.86605 6 Salinity PSS-78 17.44 24.08 7 Speed:Sound m/s 1481.26 1484.36 8 Density kg/m^3 1012.607 1018.321 $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 : 584 LATITUDE : 49 17.53471 N ! (deg min) LONGITUDE : 123 0.33458 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 2017/12/09 01:34:53 51 51 HDREDIT2 3.1.1 2017/12/13 11:33:23 ? ? CALIB 12.0 2019/08/26 15:30:39 51 51 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:34:53 -HEADER EDITS: 2017/12/13 11:33:23 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 15:30:39 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_20170623_181402 % Cast time (UTC),2017-06-23 18:14:02 % Cast time (local),2017-06-23 18:14:02 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2922452 % Start longitude,-123.0055764 % Start altitude,-34.799999237060547 % Start GPS horizontal error(Meter),3.1500000953674316 % Start GPS vertical error(Meter),4.2399997711181641 % Start GPS number of satellites,6 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),50.8 % 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 14.330 2.24941 2.85966 17.44 1484.07 1012.607 0.45 0.45 14.273 2.25047 2.86515 17.48 1483.92 1012.646 0.75 0.76 14.215 2.25405 2.87395 17.53 1483.80 1012.701 1.05 1.06 14.154 2.26013 2.88624 17.61 1483.68 1012.774 1.35 1.36 14.121 2.27997 2.91401 17.80 1483.79 1012.923 1.65 1.66 14.126 2.29015 2.92664 17.88 1483.91 1012.988 1.95 1.96 14.161 2.29634 2.93194 17.92 1484.08 1013.012 2.25 2.27 14.162 2.30199 2.93906 17.97 1484.14 1013.049 2.55 2.57 14.131 2.31546 2.95859 18.10 1484.19 1013.155 2.85 2.87 14.093 2.32200 2.96987 18.17 1484.15 1013.221 3.15 3.17 14.030 2.32480 2.97825 18.22 1484.01 1013.274 3.45 3.47 13.975 2.32845 2.98712 18.28 1483.89 1013.329 3.75 3.77 13.933 2.33171 2.99451 18.33 1483.81 1013.375 4.05 4.08 13.891 2.33288 2.99928 18.36 1483.70 1013.407 4.35 4.38 13.828 2.33553 3.00753 18.41 1483.56 1013.460 4.65 4.68 13.727 2.33858 3.01932 18.49 1483.30 1013.536 4.95 4.98 13.574 2.35090 3.04728 18.67 1482.99 1013.703 5.25 5.28 13.310 2.40568 3.13972 19.28 1482.80 1014.219 5.55 5.58 13.168 2.52287 3.30493 20.38 1483.62 1015.098 5.85 5.88 13.086 2.61578 3.43402 21.25 1484.36 1015.784 6.15 6.19 12.890 2.64041 3.48432 21.59 1484.07 1016.075 6.45 6.49 12.691 2.65000 3.51542 21.79 1483.62 1016.265 6.75 6.79 12.511 2.65399 3.53759 21.93 1483.16 1016.405 7.05 7.09 12.418 2.65511 3.54786 21.99 1482.92 1016.472 7.35 7.39 12.381 2.65485 3.55105 22.01 1482.82 1016.494 7.65 7.69 12.351 2.65601 3.55547 22.04 1482.75 1016.522 7.95 7.99 12.318 2.65834 3.56174 22.08 1482.68 1016.560 8.25 8.29 12.276 2.66056 3.56870 22.12 1482.60 1016.603 8.55 8.59 12.224 2.67782 3.59688 22.31 1482.64 1016.759 8.85 8.89 12.188 2.68982 3.61655 22.44 1482.67 1016.868 9.15 9.19 12.156 2.69212 3.62275 22.48 1482.61 1016.906 9.45 9.49 12.121 2.69338 3.62784 22.52 1482.53 1016.938 9.75 9.80 12.084 2.69494 3.63355 22.55 1482.45 1016.974 10.05 10.10 12.043 2.69553 3.63839 22.58 1482.35 1017.005 10.35 10.40 11.993 2.69742 3.64586 22.63 1482.23 1017.052 10.65 10.70 11.931 2.69978 3.65513 22.69 1482.09 1017.109 10.95 11.00 11.859 2.71000 3.67612 22.83 1482.00 1017.229 11.25 11.30 11.806 2.73467 3.71502 23.09 1482.13 1017.442 11.55 11.60 11.745 2.74628 3.73691 23.23 1482.09 1017.566 11.85 11.90 11.648 2.75154 3.75404 23.34 1481.88 1017.668 12.15 12.20 11.532 2.75962 3.77700 23.49 1481.65 1017.803 12.45 12.50 11.455 2.76920 3.79809 23.63 1481.54 1017.924 12.75 12.80 11.412 2.77940 3.81661 23.75 1481.54 1018.028 13.05 13.10 11.345 2.78680 3.83379 23.87 1481.44 1018.127 13.35 13.40 11.285 2.79013 3.84477 23.94 1481.31 1018.193 13.65 13.70 11.273 2.79179 3.84835 23.96 1481.30 1018.215 13.95 14.00 11.274 2.79396 3.85120 23.98 1481.34 1018.231 14.25 14.30 11.253 2.79654 3.85696 24.02 1481.31 1018.265 14.55 14.60 11.235 2.79788 3.86072 24.04 1481.28 1018.288 14.85 14.90 11.225 2.79804 3.86204 24.05 1481.26 1018.297 15.19 15.25 11.220 2.80056 3.86605 24.08 1481.28 1018.321