*2019/08/26 15:30:30.13 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 23:20:34.000 END TIME : UTC 2017/02/28 23:20:50.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 81 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.3 2 Depth metres 0.15 24.26 3 Temperature 'deg C (ITS90)' 7.638 7.683 4 Conductivity S/m 2.81451 2.866 5 Conductance:Specific S/m 4.31073 4.38492 6 Salinity PSS-78 26.75 27.25 7 Speed:Sound m/s 1470.9 1472.05 8 Density kg/m^3 1020.85 1021.347 $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 : 280 LATITUDE : 49 18.34043 N ! (deg min) LONGITUDE : 123 6.03187 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 20:32:32 81 81 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:30 81 81 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:32:31 -HEADER EDITS: 2017/12/13 11:33:17 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 15:30:30 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_232034 % Cast time (UTC),2017-02-28 23:20:34 % Cast time (local),2017-02-28 23:20:34 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3056738 % Start longitude,-123.1005311 % Start altitude,-34.209999084472656 % Start GPS horizontal error(Meter),9.3299999237060547 % Start GPS vertical error(Meter),12.550000190734863 % Start GPS number of satellites,5 % End latitude,49.3059807 % End longitude,-123.1010871 % End altitude,-19.069999694824219 % End GPS horizontal error(Meter),5.1399998664855957 % End GPS vertical error(Meter),8.2600002288818359 % End GPS number of satellites,5 % Cast duration (Seconds),97.2 % 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 7.645 2.81451 4.31073 26.75 1470.90 1020.850 0.45 0.45 7.645 2.81575 4.31267 26.76 1470.91 1020.861 0.75 0.75 7.645 2.81606 4.31322 26.77 1470.92 1020.866 1.05 1.05 7.643 2.81632 4.31375 26.77 1470.93 1020.870 1.35 1.35 7.645 2.81902 4.31775 26.80 1470.97 1020.893 1.65 1.65 7.643 2.82017 4.31972 26.81 1470.98 1020.905 1.95 1.95 7.641 2.82100 4.32121 26.82 1471.00 1020.914 2.25 2.25 7.642 2.82227 4.32311 26.83 1471.02 1020.925 2.55 2.55 7.639 2.82239 4.32365 26.84 1471.02 1020.930 2.85 2.85 7.638 2.82189 4.32294 26.83 1471.01 1020.927 3.15 3.15 7.641 2.82292 4.32422 26.84 1471.04 1020.935 3.45 3.44 7.642 2.82415 4.32588 26.85 1471.06 1020.945 3.75 3.74 7.642 2.82476 4.32688 26.86 1471.08 1020.952 4.05 4.04 7.644 2.82581 4.32824 26.87 1471.10 1020.961 4.35 4.34 7.645 2.82712 4.33011 26.88 1471.12 1020.972 4.65 4.64 7.646 2.82813 4.33154 26.89 1471.14 1020.981 4.95 4.94 7.645 2.82844 4.33209 26.89 1471.15 1020.985 5.25 5.24 7.646 2.82906 4.33300 26.90 1471.16 1020.991 5.55 5.54 7.644 2.82882 4.33279 26.90 1471.16 1020.991 5.85 5.84 7.643 2.82858 4.33262 26.90 1471.16 1020.992 6.15 6.14 7.644 2.82860 4.33254 26.90 1471.17 1020.993 6.45 6.44 7.644 2.82793 4.33149 26.89 1471.16 1020.988 6.75 6.74 7.646 2.82684 4.32958 26.88 1471.16 1020.979 7.05 7.04 7.646 2.82828 4.33171 26.89 1471.19 1020.992 7.35 7.34 7.647 2.82860 4.33213 26.89 1471.20 1020.996 7.65 7.64 7.647 2.82795 4.33114 26.89 1471.19 1020.992 7.95 7.94 7.648 2.83111 4.33584 26.92 1471.24 1021.018 8.25 8.24 7.649 2.83314 4.33873 26.94 1471.28 1021.035 8.55 8.54 7.650 2.83233 4.33737 26.93 1471.27 1021.029 8.85 8.84 7.651 2.83177 4.33644 26.92 1471.27 1021.025 9.15 9.14 7.650 2.83118 4.33571 26.92 1471.27 1021.023 9.45 9.44 7.649 2.83182 4.33677 26.93 1471.28 1021.030 9.75 9.73 7.651 2.83288 4.33819 26.93 1471.30 1021.038 10.05 10.03 7.651 2.83195 4.33672 26.93 1471.29 1021.032 10.35 10.33 7.649 2.83205 4.33714 26.93 1471.29 1021.035 10.65 10.63 7.649 2.83133 4.33603 26.92 1471.29 1021.031 10.95 10.93 7.649 2.83018 4.33430 26.91 1471.28 1021.023 11.25 11.23 7.649 2.82904 4.33256 26.90 1471.27 1021.015 11.55 11.53 7.648 2.82911 4.33281 26.90 1471.27 1021.017 11.85 11.83 7.647 2.82926 4.33317 26.90 1471.28 1021.021 12.15 12.13 7.648 2.82897 4.33253 26.89 1471.28 1021.018 12.45 12.43 7.647 2.82898 4.33269 26.90 1471.28 1021.021 12.75 12.73 7.647 2.82768 4.33073 26.88 1471.27 1021.011 13.05 13.03 7.647 2.82707 4.32977 26.88 1471.27 1021.008 13.35 13.33 7.647 2.82666 4.32908 26.87 1471.27 1021.005 13.65 13.63 7.647 2.82641 4.32871 26.87 1471.27 1021.004 13.95 13.93 7.647 2.82787 4.33093 26.88 1471.29 1021.018 14.25 14.23 7.649 2.82952 4.33328 26.90 1471.32 1021.032 14.55 14.53 7.649 2.82891 4.33226 26.89 1471.32 1021.027 14.85 14.83 7.649 2.82784 4.33071 26.88 1471.31 1021.020 15.15 15.13 7.649 2.82767 4.33037 26.88 1471.32 1021.020 15.45 15.43 7.649 2.82839 4.33152 26.89 1471.33 1021.027 15.75 15.72 7.652 2.83018 4.33387 26.90 1471.37 1021.041 16.05 16.02 7.653 2.83343 4.33873 26.94 1471.41 1021.068 16.35 16.32 7.653 2.83607 4.34270 26.96 1471.45 1021.091 16.65 16.62 7.653 2.83557 4.34201 26.96 1471.45 1021.089 16.95 16.92 7.654 2.83209 4.33653 26.92 1471.41 1021.061 17.25 17.22 7.654 2.83292 4.33780 26.93 1471.43 1021.069 17.55 17.52 7.657 2.83781 4.34492 26.98 1471.51 1021.108 17.85 17.82 7.658 2.83689 4.34334 26.97 1471.50 1021.101 18.15 18.12 7.660 2.84411 4.35412 27.04 1471.61 1021.160 18.45 18.42 7.666 2.84855 4.36009 27.08 1471.69 1021.193 18.75 18.72 7.669 2.85014 4.36219 27.10 1471.72 1021.206 19.05 19.02 7.668 2.85135 4.36412 27.11 1471.74 1021.217 19.35 19.32 7.670 2.85109 4.36349 27.11 1471.75 1021.215 19.65 19.62 7.671 2.85152 4.36393 27.11 1471.76 1021.219 19.95 19.92 7.674 2.85325 4.36628 27.13 1471.80 1021.233 20.25 20.22 7.675 2.85524 4.36914 27.15 1471.83 1021.249 20.55 20.52 7.677 2.85688 4.37142 27.16 1471.86 1021.263 20.85 20.82 7.678 2.85859 4.37382 27.18 1471.89 1021.277 21.15 21.12 7.679 2.85807 4.37289 27.17 1471.89 1021.273 21.45 21.41 7.680 2.85803 4.37281 27.17 1471.90 1021.274 21.75 21.71 7.679 2.86198 4.37896 27.21 1471.95 1021.308 22.05 22.01 7.677 2.86335 4.38128 27.23 1471.97 1021.322 22.35 22.31 7.680 2.86454 4.38270 27.24 1472.00 1021.331 22.65 22.61 7.681 2.86397 4.38173 27.23 1472.00 1021.327 22.95 22.91 7.680 2.86447 4.38257 27.24 1472.01 1021.333 23.25 23.21 7.680 2.86600 4.38492 27.25 1472.03 1021.347 23.55 23.51 7.681 2.86536 4.38382 27.25 1472.03 1021.342 23.85 23.81 7.683 2.86541 4.38360 27.25 1472.04 1021.342 24.30 24.26 7.683 2.86542 4.38367 27.25 1472.05 1021.345