*2019/08/26 15:30:37.47 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/22 17:06:15.000 END TIME : UTC 2017/06/22 17:06:24.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 47 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.85 2 Depth metres 0.15 13.9 3 Temperature 'deg C (ITS90)' 11.637 14.435 4 Conductivity S/m 2.16981 2.73182 5 Conductance:Specific S/m 2.7511 3.72823 6 Salinity PSS-78 16.72 23.16 7 Speed:Sound m/s 1481.62 1484.2 8 Density kg/m^3 1012.037 1017.541 $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 : 548 LATITUDE : 49 18.35348 N ! (deg min) LONGITUDE : 122 58.83703 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 00:58:47 47 47 HDREDIT2 3.1.1 2017/12/13 11:33:21 ? ? CALIB 12.0 2019/08/26 15:30:37 47 47 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:58:46 -HEADER EDITS: 2017/12/13 11:33:21 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 15:30:37 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_20170622_170615 % Cast time (UTC),2017-06-22 17:06:15 % Cast time (local),2017-06-22 17:06:15 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3058913 % Start longitude,-122.9806172 % Start altitude,-14.210000038146973 % Start GPS horizontal error(Meter),1.8999999761581421 % Start GPS vertical error(Meter),2.4300000667572021 % Start GPS number of satellites,6 % End latitude,49.3063884 % End longitude,-122.9806816 % End altitude,-48.470001220703125 % End GPS horizontal error(Meter),14.529999732971191 % End GPS vertical error(Meter),18.209999084472656 % End GPS number of satellites,6 % Cast duration (Seconds),67.4 % 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 14.435 2.16981 2.75110 16.72 1483.59 1012.037 0.45 0.45 14.434 2.17809 2.76167 16.79 1483.67 1012.092 0.75 0.76 14.433 2.18666 2.77263 16.87 1483.76 1012.150 1.05 1.06 14.416 2.19069 2.77891 16.91 1483.75 1012.186 1.35 1.36 14.398 2.19838 2.78994 16.98 1483.78 1012.246 1.65 1.66 14.376 2.20191 2.79598 17.02 1483.76 1012.281 1.95 1.96 14.365 2.21424 2.81247 17.13 1483.85 1012.369 2.25 2.27 14.334 2.23588 2.84220 17.33 1483.98 1012.527 2.55 2.57 14.270 2.24152 2.85401 17.40 1483.86 1012.598 2.85 2.87 14.185 2.24284 2.86182 17.45 1483.63 1012.652 3.15 3.17 14.061 2.24344 2.87175 17.51 1483.28 1012.723 3.45 3.47 13.912 2.24735 2.88776 17.61 1482.90 1012.828 3.75 3.78 13.714 2.27166 2.93393 17.91 1482.57 1013.095 4.05 4.08 13.490 2.32188 3.01625 18.45 1482.44 1013.551 4.35 4.38 13.266 2.44813 3.19880 19.67 1483.10 1014.527 4.65 4.68 13.124 2.59193 3.39931 21.02 1484.20 1015.592 4.95 4.98 12.881 2.61223 3.44791 21.34 1483.73 1015.880 5.25 5.28 12.563 2.61950 3.48683 21.58 1482.92 1016.125 5.55 5.58 12.382 2.63275 3.52138 21.81 1482.55 1016.330 5.85 5.88 12.303 2.64713 3.54819 21.98 1482.49 1016.482 6.15 6.18 12.244 2.65475 3.56402 22.09 1482.41 1016.573 6.45 6.49 12.201 2.65645 3.57040 22.13 1482.31 1016.613 6.75 6.79 12.171 2.65789 3.57523 22.16 1482.24 1016.644 7.05 7.09 12.142 2.66075 3.58190 22.20 1482.20 1016.683 7.35 7.39 12.110 2.66351 3.58866 22.25 1482.14 1016.724 7.65 7.69 12.076 2.66549 3.59462 22.29 1482.07 1016.761 7.95 7.99 12.039 2.66887 3.60273 22.34 1482.01 1016.809 8.25 8.29 12.008 2.67689 3.61662 22.43 1482.02 1016.887 8.55 8.59 11.970 2.69001 3.63814 22.57 1482.06 1017.006 8.85 8.89 11.920 2.69291 3.64698 22.63 1481.95 1017.060 9.15 9.19 11.885 2.69699 3.65599 22.69 1481.90 1017.112 9.45 9.49 11.863 2.69878 3.66056 22.72 1481.86 1017.140 9.75 9.79 11.844 2.70133 3.66591 22.76 1481.84 1017.172 10.05 10.10 11.824 2.70423 3.67185 22.80 1481.82 1017.207 10.35 10.39 11.798 2.70689 3.67800 22.84 1481.79 1017.243 10.65 10.70 11.770 2.70934 3.68422 22.88 1481.74 1017.280 10.95 11.00 11.757 2.71241 3.68968 22.91 1481.74 1017.312 11.25 11.30 11.742 2.71555 3.69544 22.95 1481.74 1017.345 11.55 11.60 11.722 2.71701 3.69948 22.98 1481.70 1017.370 11.85 11.90 11.702 2.71792 3.70273 23.00 1481.66 1017.391 12.15 12.20 11.681 2.71977 3.70737 23.03 1481.62 1017.419 12.45 12.50 11.676 2.72145 3.71016 23.05 1481.63 1017.436 12.75 12.80 11.689 2.72524 3.71402 23.07 1481.72 1017.456 13.05 13.10 11.687 2.72810 3.71813 23.10 1481.75 1017.479 13.35 13.40 11.672 2.72989 3.72205 23.13 1481.73 1017.503 13.65 13.70 11.638 2.73043 3.72625 23.15 1481.64 1017.530 13.85 13.90 11.637 2.73182 3.72823 23.16 1481.66 1017.541