*2019/08/26 15:30:38.67 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 17:52:07.000 END TIME : UTC 2017/06/23 17:52:17.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 52 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.37 2 Depth metres 0.15 15.42 3 Temperature 'deg C (ITS90)' 11.522 14.869 4 Conductivity S/m 2.21717 2.77289 5 Conductance:Specific S/m 2.78421 3.79553 6 Salinity PSS-78 16.96 23.62 7 Speed:Sound m/s 1481.81 1485.32 8 Density kg/m^3 1012.138 1017.915 $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 : 576 LATITUDE : 49 18.30940 N ! (deg min) LONGITUDE : 122 58.92649 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 01:26:44 52 52 HDREDIT2 3.1.1 2017/12/13 11:33:23 ? ? CALIB 12.0 2019/08/26 15:30:38 52 52 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:26:43 -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 15:30:38 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_175207 % Cast time (UTC),2017-06-23 17:52:07 % Cast time (local),2017-06-23 17:52:07 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3051567 % Start longitude,-122.9821081 % Start altitude,-18.950000762939453 % Start GPS horizontal error(Meter),6.4099998474121094 % Start GPS vertical error(Meter),7.7399997711181641 % Start GPS number of satellites,5 % End latitude,49.3061344 % End longitude,-122.9801335 % End altitude,-18.590000152587891 % End GPS horizontal error(Meter),253.19000244140625 % End GPS vertical error(Meter),563.3699951171875 % End GPS number of satellites,3 % Cast duration (Seconds),117 % 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 14.869 2.22005 2.78421 16.96 1485.32 1012.138 0.45 0.45 14.833 2.22010 2.78678 16.98 1485.22 1012.158 0.75 0.76 14.797 2.21745 2.78592 16.97 1485.10 1012.161 1.05 1.06 14.780 2.21717 2.78676 16.97 1485.06 1012.169 1.35 1.36 14.769 2.21739 2.78782 16.98 1485.03 1012.178 1.65 1.66 14.767 2.21869 2.78962 16.99 1485.04 1012.188 1.95 1.96 14.773 2.22367 2.79545 17.03 1485.11 1012.218 2.25 2.27 14.749 2.22718 2.80158 17.07 1485.08 1012.255 2.55 2.57 14.692 2.22885 2.80767 17.11 1484.94 1012.296 2.85 2.87 14.619 2.23345 2.81863 17.18 1484.78 1012.365 3.15 3.17 14.540 2.27964 2.88271 17.60 1485.01 1012.707 3.45 3.47 14.448 2.32002 2.94061 17.99 1485.15 1013.019 3.75 3.78 14.237 2.32593 2.96394 18.14 1484.62 1013.172 4.05 4.08 13.899 2.32948 2.99430 18.33 1483.69 1013.380 4.35 4.38 13.575 2.34490 3.03941 18.61 1482.92 1013.660 4.65 4.68 13.284 2.49806 3.26256 20.10 1483.67 1014.858 4.95 4.98 12.980 2.69137 3.54313 21.99 1484.85 1016.367 5.25 5.28 12.679 2.70682 3.59197 22.31 1484.18 1016.664 5.55 5.58 12.438 2.70891 3.61783 22.47 1483.53 1016.831 5.85 5.88 12.281 2.71010 3.63469 22.57 1483.11 1016.940 6.15 6.18 12.158 2.71147 3.64853 22.66 1482.78 1017.029 6.45 6.49 12.094 2.71210 3.65567 22.70 1482.62 1017.075 6.75 6.79 12.070 2.71450 3.66129 22.74 1482.58 1017.109 7.05 7.09 12.045 2.71571 3.66538 22.77 1482.53 1017.135 7.35 7.39 12.024 2.71675 3.66892 22.79 1482.48 1017.157 7.65 7.69 12.008 2.71752 3.67150 22.81 1482.45 1017.174 7.95 7.99 11.997 2.71766 3.67277 22.81 1482.43 1017.183 8.25 8.29 11.986 2.71772 3.67395 22.82 1482.40 1017.192 8.55 8.59 11.978 2.71731 3.67425 22.82 1482.38 1017.196 8.85 8.89 11.970 2.71758 3.67538 22.83 1482.36 1017.204 9.15 9.19 11.959 2.71806 3.67714 22.84 1482.34 1017.216 9.45 9.49 11.947 2.71887 3.67938 22.86 1482.32 1017.230 9.75 9.79 11.928 2.72045 3.68346 22.88 1482.29 1017.255 10.05 10.09 11.900 2.72287 3.68951 22.92 1482.24 1017.291 10.35 10.39 11.887 2.72830 3.69821 22.98 1482.27 1017.340 10.65 10.70 11.865 2.73235 3.70589 23.03 1482.26 1017.385 10.95 10.99 11.837 2.73321 3.70986 23.05 1482.19 1017.410 11.25 11.30 11.814 2.73484 3.71442 23.08 1482.15 1017.438 11.55 11.60 11.794 2.73641 3.71856 23.11 1482.12 1017.463 11.85 11.90 11.778 2.73894 3.72365 23.14 1482.11 1017.493 12.15 12.20 11.764 2.74010 3.72662 23.16 1482.08 1017.512 12.45 12.50 11.746 2.74096 3.72959 23.18 1482.05 1017.531 12.75 12.80 11.728 2.74157 3.73222 23.20 1482.01 1017.548 13.05 13.10 11.715 2.74105 3.73291 23.20 1481.97 1017.554 13.35 13.40 11.689 2.74407 3.73964 23.25 1481.94 1017.594 13.65 13.70 11.677 2.75036 3.74947 23.31 1481.98 1017.649 13.95 14.00 11.698 2.75801 3.75770 23.37 1482.13 1017.691 14.25 14.30 11.695 2.76356 3.76554 23.43 1482.18 1017.734 14.55 14.60 11.668 2.76704 3.77307 23.47 1482.15 1017.778 14.85 14.90 11.605 2.77119 3.78529 23.55 1482.03 1017.851 15.15 15.20 11.522 2.77239 3.79553 23.62 1481.81 1017.915 15.37 15.42 11.529 2.77289 3.79541 23.62 1481.84 1017.915