*2019/08/26 15:30:11.87 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/19 17:43:27.000 END TIME : UTC 2016/10/19 17:43:38.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 59 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.55 2 Depth metres 0.15 17.73 3 Temperature 'deg C (ITS90)' 10.514 10.597 4 Conductivity S/m 0.9734E-01 2.52423 5 Conductance:Specific S/m 0.13673 3.55383 6 Salinity PSS-78 0.68 21.89 7 Speed:Sound m/s 1450.47 1476.14 8 Density kg/m^3 1000.179 1016.745 $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 : 410 LATITUDE : 49 7.05179 N ! (deg min) LONGITUDE : 123 4.91192 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 2017/12/08 22:43:02 59 59 HDREDIT2 3.1.1 2017/12/13 11:31:14 ? ? CALIB 12.0 2019/08/26 15:30:11 59 59 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:43:01 -HEADER EDITS: 2017/12/13 11:31:14 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 15:30:11 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_20161019_174327 % Cast time (UTC),2016-10-19 17:43:27 % Cast time (local),2016-10-19 17:43:27 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1175298 % Start longitude,-123.0818654 % Start altitude,-31.850000381469727 % Start GPS horizontal error(Meter),2.559999942779541 % Start GPS vertical error(Meter),3.309999942779541 % Start GPS number of satellites,7 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),103.4 % 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 10.595 0.09734 0.13673 0.68 1450.47 1000.179 0.45 0.46 10.597 0.11499 0.16152 0.80 1450.65 1000.280 0.75 0.76 10.594 0.12237 0.17190 0.86 1450.70 1000.325 1.05 1.07 10.595 0.14215 0.19967 1.00 1450.89 1000.440 1.35 1.38 10.593 0.14672 0.20611 1.04 1450.93 1000.468 1.65 1.68 10.596 0.15295 0.21484 1.08 1451.01 1000.506 1.95 1.99 10.597 0.15677 0.22021 1.11 1451.05 1000.529 2.25 2.29 10.596 0.16444 0.23098 1.17 1451.12 1000.576 2.55 2.60 10.595 0.18686 0.26249 1.34 1451.33 1000.709 2.85 2.90 10.595 0.20027 0.28131 1.44 1451.46 1000.790 3.15 3.21 10.594 0.21805 0.30630 1.57 1451.63 1000.897 3.45 3.52 10.593 0.23675 0.33257 1.72 1451.81 1001.010 3.75 3.82 10.593 0.24745 0.34761 1.80 1451.91 1001.076 4.05 4.13 10.593 0.25370 0.35639 1.85 1451.98 1001.115 4.35 4.43 10.592 0.26236 0.36856 1.92 1452.06 1001.168 4.65 4.74 10.592 0.26687 0.37490 1.95 1452.11 1001.197 4.95 5.04 10.591 0.30055 0.42222 2.21 1452.43 1001.402 5.25 5.35 10.591 0.31860 0.44758 2.35 1452.61 1001.514 5.55 5.65 10.590 0.35451 0.49805 2.63 1452.96 1001.736 5.85 5.96 10.586 0.39865 0.56013 2.99 1453.38 1002.011 6.15 6.26 10.581 0.50354 0.70761 3.83 1454.39 1002.670 6.45 6.57 10.577 0.63245 0.88884 4.89 1455.67 1003.494 6.75 6.87 10.573 0.79296 1.11454 6.23 1457.29 1004.539 7.05 7.18 10.566 0.93121 1.30913 7.41 1458.70 1005.454 7.35 7.48 10.563 1.11603 1.56911 9.00 1460.62 1006.695 7.65 7.79 10.559 1.36614 1.92092 11.20 1463.27 1008.404 7.95 8.09 10.551 1.50633 2.11855 12.46 1464.75 1009.379 8.25 8.39 10.543 1.74076 2.44884 14.58 1467.28 1011.028 8.55 8.69 10.539 2.00586 2.82207 17.02 1470.20 1012.919 8.85 8.99 10.538 2.13791 3.00795 18.24 1471.68 1013.872 9.15 9.30 10.535 2.16145 3.04129 18.46 1471.94 1014.045 9.45 9.60 10.534 2.16832 3.05105 18.53 1472.02 1014.097 9.75 9.90 10.532 2.17020 3.05384 18.55 1472.04 1014.113 10.05 10.20 10.532 2.17247 3.05709 18.57 1472.07 1014.131 10.35 10.50 10.533 2.17435 3.05966 18.59 1472.10 1014.145 10.65 10.80 10.533 2.17058 3.05435 18.55 1472.06 1014.119 10.95 11.11 10.533 2.17559 3.06141 18.60 1472.12 1014.157 11.25 11.41 10.533 2.17603 3.06195 18.60 1472.13 1014.161 11.55 11.71 10.533 2.17837 3.06529 18.62 1472.16 1014.180 11.85 12.01 10.531 2.18280 3.07169 18.66 1472.21 1014.214 12.15 12.31 10.531 2.19085 3.08301 18.74 1472.31 1014.274 12.45 12.61 10.529 2.18538 3.07550 18.69 1472.24 1014.237 12.75 12.91 10.529 2.21183 3.11275 18.94 1472.55 1014.430 13.05 13.22 10.528 2.24758 3.16312 19.27 1472.95 1014.692 13.35 13.52 10.527 2.28281 3.21278 19.61 1473.35 1014.950 13.65 13.82 10.527 2.32423 3.27105 19.99 1473.83 1015.254 13.95 14.12 10.527 2.36898 3.33405 20.42 1474.34 1015.582 14.25 14.42 10.525 2.39719 3.37395 20.68 1474.66 1015.792 14.55 14.72 10.523 2.41340 3.39698 20.84 1474.84 1015.913 14.85 15.02 10.520 2.45193 3.45149 21.20 1475.28 1016.200 15.15 15.32 10.518 2.47783 3.48815 21.45 1475.57 1016.393 15.45 15.62 10.517 2.49070 3.50636 21.57 1475.72 1016.490 15.75 15.93 10.516 2.49892 3.51800 21.65 1475.82 1016.552 16.05 16.23 10.515 2.51402 3.53934 21.80 1475.99 1016.665 16.35 16.53 10.514 2.52051 3.54860 21.86 1476.07 1016.715 16.65 16.83 10.514 2.52353 3.55286 21.89 1476.11 1016.739 16.95 17.13 10.514 2.52423 3.55383 21.89 1476.12 1016.745 17.25 17.43 10.516 2.52371 3.55297 21.89 1476.12 1016.742 17.55 17.73 10.520 2.52375 3.55260 21.89 1476.14 1016.741