*2019/08/26 15:30:28.16 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 00:17:47.000 END TIME : UTC 2017/02/28 00:17:58.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 56 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.72 2 Depth metres 0.15 16.68 3 Temperature 'deg C (ITS90)' 7.531 8.067 4 Conductivity S/m 2.76842 3.05577 5 Conductance:Specific S/m 4.25385 4.62087 6 Salinity PSS-78 26.35 28.93 7 Speed:Sound m/s 1469.96 1475.48 8 Density kg/m^3 1020.552 1022.58 $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 : 248 LATITUDE : 49 18.95783 N ! (deg min) LONGITUDE : 123 8.16252 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 20:03:34 56 56 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:28 56 56 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:03:34 -HEADER EDITS: 2017/12/13 11:33:16 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 15:30:28 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_20170228_001747 % Cast time (UTC),2017-02-28 00:17:47 % Cast time (local),2017-02-28 00:17:47 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3159638 % Start longitude,-123.136042 % Start altitude,-14.210000038146973 % Start GPS horizontal error(Meter),2.1099998950958252 % Start GPS vertical error(Meter),2.5399999618530273 % Start GPS number of satellites,6 % End latitude,49.3157789 % End longitude,-123.1349812 % End altitude,-100.83000183105469 % End GPS horizontal error(Meter),16.559999465942383 % End GPS vertical error(Meter),28.309999465942383 % End GPS number of satellites,5 % Cast duration (Seconds),120.4 % 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 7.531 2.77547 4.26584 26.43 1470.05 1020.612 0.45 0.45 7.531 2.76842 4.25502 26.35 1469.96 1020.555 0.75 0.75 7.535 2.77148 4.25927 26.38 1470.02 1020.579 1.05 1.05 7.539 2.77128 4.25834 26.38 1470.04 1020.575 1.35 1.35 7.558 2.76997 4.25385 26.35 1470.08 1020.552 1.65 1.65 7.579 2.78034 4.26712 26.44 1470.28 1020.624 1.95 1.95 7.581 2.79432 4.28831 26.59 1470.47 1020.739 2.25 2.25 7.588 2.79342 4.28595 26.57 1470.49 1020.727 2.55 2.55 7.596 2.79419 4.28612 26.57 1470.52 1020.729 2.85 2.85 7.604 2.79935 4.29294 26.62 1470.62 1020.767 3.15 3.15 7.621 2.81280 4.31131 26.75 1470.85 1020.866 3.45 3.45 7.636 2.81710 4.31590 26.78 1470.95 1020.892 3.75 3.75 7.638 2.81942 4.31928 26.81 1470.99 1020.911 4.05 4.04 7.637 2.82029 4.32066 26.82 1471.01 1020.920 4.35 4.34 7.638 2.82023 4.32047 26.81 1471.01 1020.920 4.65 4.64 7.637 2.82234 4.32381 26.84 1471.04 1020.940 4.95 4.94 7.644 2.82568 4.32803 26.87 1471.11 1020.963 5.25 5.24 7.667 2.83271 4.33572 26.92 1471.28 1021.005 5.55 5.54 7.679 2.83561 4.33853 26.94 1471.35 1021.021 5.85 5.84 7.683 2.83779 4.34144 26.96 1471.40 1021.038 6.15 6.14 7.687 2.84685 4.35470 27.05 1471.53 1021.111 6.45 6.44 7.700 2.84635 4.35226 27.04 1471.57 1021.099 6.75 6.74 7.727 2.86603 4.37869 27.22 1471.91 1021.241 7.05 7.04 7.782 2.86463 4.36922 27.17 1472.05 1021.190 7.35 7.34 7.848 2.90249 4.41812 27.51 1472.74 1021.453 7.65 7.64 7.889 2.95858 4.49785 28.06 1473.59 1021.883 7.95 7.94 7.916 2.99016 4.54217 28.37 1474.08 1022.123 8.25 8.24 7.941 2.99480 4.54571 28.40 1474.21 1022.143 8.55 8.54 7.967 3.00035 4.55057 28.44 1474.37 1022.170 8.85 8.84 7.991 3.01432 4.56839 28.56 1474.62 1022.267 9.15 9.13 8.006 3.01897 4.57332 28.60 1474.73 1022.294 9.45 9.43 8.010 3.01596 4.56830 28.57 1474.70 1022.268 9.75 9.73 8.012 3.02018 4.57443 28.61 1474.77 1022.303 10.05 10.03 8.020 3.02893 4.58657 28.69 1474.91 1022.370 10.35 10.33 8.031 3.03309 4.59133 28.73 1475.00 1022.396 10.65 10.63 8.036 3.03900 4.59955 28.79 1475.09 1022.442 10.95 10.93 8.042 3.03711 4.59583 28.76 1475.09 1022.423 11.25 11.23 8.042 3.03636 4.59464 28.75 1475.09 1022.418 11.55 11.53 8.044 3.03811 4.59711 28.77 1475.12 1022.433 11.85 11.83 8.043 3.03901 4.59859 28.78 1475.13 1022.442 12.15 12.13 8.046 3.04257 4.60360 28.81 1475.19 1022.470 12.45 12.43 8.049 3.04335 4.60429 28.82 1475.22 1022.475 12.75 12.72 8.052 3.04493 4.60628 28.83 1475.25 1022.487 13.05 13.02 8.052 3.04536 4.60686 28.84 1475.26 1022.492 13.35 13.32 8.053 3.04717 4.60946 28.86 1475.29 1022.507 13.65 13.62 8.057 3.04888 4.61161 28.87 1475.33 1022.520 13.95 13.92 8.057 3.04972 4.61284 28.88 1475.34 1022.528 14.25 14.22 8.057 3.04854 4.61101 28.87 1475.34 1022.519 14.55 14.52 8.057 3.05056 4.61410 28.89 1475.37 1022.537 14.85 14.82 8.061 3.05268 4.61674 28.91 1475.41 1022.553 15.15 15.12 8.066 3.05462 4.61902 28.92 1475.45 1022.566 15.45 15.41 8.067 3.05538 4.61999 28.93 1475.47 1022.573 15.75 15.71 8.065 3.05526 4.62010 28.93 1475.47 1022.575 16.05 16.01 8.065 3.05577 4.62087 28.93 1475.48 1022.580 16.35 16.31 8.064 3.05425 4.61867 28.92 1475.46 1022.569 16.72 16.68 8.066 3.05417 4.61836 28.92 1475.47 1022.569