*2019/08/26 15:30:32.96 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 18:00:28.000 END TIME : UTC 2017/03/03 18:00:42.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 72 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.33 2 Depth metres 0.15 21.31 3 Temperature 'deg C (ITS90)' 6.911 7.677 4 Conductivity S/m 2.06324 2.88936 5 Conductance:Specific S/m 3.23286 4.42194 6 Salinity PSS-78 19.44 27.51 7 Speed:Sound m/s 1458.9 1472.29 8 Density kg/m^3 1015.199 1021.537 $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 : 323 LATITUDE : 49 18.22270 N ! (deg min) LONGITUDE : 123 3.71888 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 21:15:08 72 72 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 72 72 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:15:08 -HEADER EDITS: 2017/12/13 11:33:18 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 15:30:32 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_20170303_180028 % Cast time (UTC),2017-03-03 18:00:28 % Cast time (local),2017-03-03 18:00:28 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3037117 % Start longitude,-123.0619813 % Start altitude,-17.059999465942383 % Start GPS horizontal error(Meter),4.3000001907348633 % Start GPS vertical error(Meter),5.690000057220459 % Start GPS number of satellites,5 % End latitude,49.3038284 % End longitude,-123.0619791 % End altitude,-14.279999732971191 % End GPS horizontal error(Meter),15.25 % End GPS vertical error(Meter),24.059999465942383 % End GPS number of satellites,5 % Cast duration (Seconds),63.2 % 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 6.911 2.06324 3.23286 19.44 1458.90 1015.199 0.45 0.45 7.055 2.20006 3.43165 20.77 1461.14 1016.226 0.75 0.75 7.161 2.40410 3.73757 22.81 1464.11 1017.822 1.05 1.05 7.218 2.54976 3.95702 24.29 1466.18 1018.978 1.35 1.35 7.259 2.58303 4.00354 24.61 1466.75 1019.225 1.65 1.65 7.286 2.61502 4.04976 24.93 1467.25 1019.471 1.95 1.95 7.297 2.64127 4.08906 25.20 1467.63 1019.681 2.25 2.25 7.319 2.66244 4.11900 25.40 1467.98 1019.841 2.55 2.55 7.339 2.67581 4.13713 25.53 1468.22 1019.939 2.85 2.85 7.362 2.68974 4.15575 25.66 1468.47 1020.039 3.15 3.15 7.388 2.70948 4.18278 25.84 1468.81 1020.184 3.45 3.45 7.407 2.71666 4.19151 25.90 1468.97 1020.231 3.75 3.75 7.419 2.71872 4.19308 25.92 1469.04 1020.241 4.05 4.05 7.430 2.72409 4.19996 25.96 1469.14 1020.278 4.35 4.35 7.437 2.73884 4.22183 26.11 1469.36 1020.396 4.65 4.65 7.434 2.75023 4.23980 26.24 1469.50 1020.494 4.95 4.95 7.429 2.75225 4.24355 26.26 1469.52 1020.515 5.25 5.25 7.425 2.75357 4.24610 26.28 1469.53 1020.530 5.55 5.55 7.413 2.75433 4.24887 26.30 1469.51 1020.546 5.85 5.85 7.402 2.75254 4.24754 26.28 1469.46 1020.541 6.15 6.15 7.390 2.75181 4.24799 26.29 1469.42 1020.545 6.45 6.45 7.382 2.75238 4.24990 26.30 1469.40 1020.556 6.75 6.75 7.379 2.75163 4.24916 26.29 1469.39 1020.554 7.05 7.05 7.376 2.75351 4.25244 26.31 1469.41 1020.573 7.35 7.35 7.376 2.75461 4.25409 26.32 1469.43 1020.583 7.65 7.65 7.378 2.75595 4.25589 26.34 1469.46 1020.594 7.95 7.95 7.381 2.75776 4.25831 26.35 1469.50 1020.608 8.25 8.25 7.383 2.76028 4.26193 26.38 1469.54 1020.628 8.55 8.55 7.385 2.76017 4.26152 26.38 1469.55 1020.628 8.85 8.85 7.386 2.75991 4.26099 26.37 1469.55 1020.626 9.15 9.14 7.386 2.76051 4.26190 26.38 1469.57 1020.632 9.45 9.45 7.387 2.76088 4.26232 26.38 1469.58 1020.636 9.75 9.74 7.389 2.76219 4.26402 26.39 1469.61 1020.646 10.05 10.04 7.394 2.76289 4.26449 26.40 1469.64 1020.650 10.35 10.34 7.399 2.76404 4.26558 26.41 1469.67 1020.657 10.65 10.64 7.407 2.76502 4.26612 26.41 1469.71 1020.661 10.95 10.94 7.414 2.76632 4.26712 26.42 1469.76 1020.667 11.25 11.24 7.424 2.77000 4.27158 26.45 1469.84 1020.692 11.55 11.54 7.432 2.77726 4.28162 26.52 1469.96 1020.747 11.85 11.84 7.445 2.77814 4.28128 26.52 1470.02 1020.746 12.15 12.14 7.451 2.77917 4.28205 26.52 1470.05 1020.752 12.45 12.44 7.457 2.78047 4.28334 26.53 1470.09 1020.760 12.75 12.74 7.466 2.78494 4.28895 26.57 1470.18 1020.791 13.05 13.04 7.476 2.78783 4.29211 26.59 1470.25 1020.809 13.35 13.34 7.484 2.78842 4.29200 26.59 1470.29 1020.810 13.65 13.64 7.488 2.78983 4.29357 26.61 1470.32 1020.819 13.95 13.94 7.494 2.79222 4.29656 26.63 1470.38 1020.837 14.25 14.24 7.499 2.79542 4.30073 26.66 1470.44 1020.860 14.55 14.54 7.502 2.79978 4.30710 26.70 1470.51 1020.895 14.85 14.84 7.504 2.80324 4.31210 26.73 1470.57 1020.923 15.15 15.14 7.509 2.80601 4.31579 26.76 1470.62 1020.944 15.45 15.44 7.513 2.80837 4.31890 26.78 1470.66 1020.962 15.75 15.74 7.518 2.81252 4.32458 26.82 1470.74 1020.994 16.05 16.04 7.523 2.81557 4.32862 26.85 1470.80 1021.017 16.35 16.34 7.525 2.81866 4.33303 26.88 1470.85 1021.042 16.65 16.64 7.533 2.82034 4.33453 26.89 1470.90 1021.051 16.95 16.93 7.545 2.82201 4.33558 26.90 1470.96 1021.058 17.25 17.23 7.555 2.82299 4.33576 26.90 1471.01 1021.060 17.55 17.53 7.564 2.82397 4.33600 26.91 1471.05 1021.062 17.85 17.83 7.571 2.83179 4.34710 26.98 1471.18 1021.123 18.15 18.13 7.575 2.84071 4.36026 27.07 1471.31 1021.195 18.45 18.43 7.583 2.84368 4.36381 27.10 1471.38 1021.215 18.75 18.73 7.589 2.84555 4.36585 27.11 1471.43 1021.227 19.05 19.03 7.596 2.84750 4.36792 27.13 1471.48 1021.239 19.35 19.33 7.597 2.84790 4.36836 27.13 1471.49 1021.243 19.65 19.63 7.596 2.84940 4.37081 27.15 1471.51 1021.257 19.95 19.93 7.596 2.85266 4.37578 27.18 1471.56 1021.285 20.25 20.23 7.602 2.86614 4.39559 27.32 1471.76 1021.393 20.55 20.53 7.619 2.87556 4.40781 27.40 1471.93 1021.459 20.85 20.83 7.637 2.88432 4.41881 27.48 1472.11 1021.520 21.15 21.13 7.661 2.88846 4.42194 27.51 1472.23 1021.537 21.33 21.31 7.677 2.88936 4.42114 27.50 1472.29 1021.533