*2019/08/26 15:30:35.21 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/10/04 18:03:03.000 END TIME : UTC 2017/10/04 18:03:19.000 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 24.24 2 Depth metres 0.15 24.24 3 Temperature 'deg C (ITS90)' 13.295 13.58 4 Conductivity S/m 3.06651 3.13244 5 Conductance:Specific S/m 3.97518 4.0899 6 Salinity PSS-78 25 25.77 7 Speed:Sound m/s 1490.27 1490.69 8 Density kg/m^3 1018.557 1019.314 $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 : 361 LATITUDE : 54 0.12754 N ! (deg min) LONGITUDE : 132 9.29902 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 21:52:58 81 81 HDREDIT2 3.1.1 2017/12/13 11:33:20 ? ? CALIB 12.0 2019/08/26 15:30:35 81 81 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:52:58 -HEADER EDITS: 2017/12/13 11:33:20 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 15:30:35 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_20171004_180303 % Cast time (UTC),2017-10-04 18:03:03 % Cast time (local),2017-10-04 18:03:03 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,54.0021257 % Start longitude,-132.1549837 % Start altitude,-5.2600002288818359 % Start GPS horizontal error(Meter),1.3600000143051148 % Start GPS vertical error(Meter),2.3499999046325684 % Start GPS number of satellites,9 % End latitude,54.0019101 % End longitude,-132.1550252 % End altitude,-9.0600004196167 % End GPS horizontal error(Meter),2.3299999237060547 % End GPS vertical error(Meter),4.3400001525878906 % End GPS number of satellites,9 % Cast duration (Seconds),68 % 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 13.580 3.06721 3.97518 25.00 1490.35 1018.557 0.45 0.45 13.576 3.06760 3.97606 25.01 1490.35 1018.564 0.75 0.75 13.573 3.06710 3.97568 25.00 1490.35 1018.563 1.05 1.05 13.566 3.06651 3.97563 25.00 1490.33 1018.565 1.35 1.35 13.555 3.06722 3.97778 25.02 1490.31 1018.580 1.65 1.65 13.535 3.06922 3.98243 25.05 1490.28 1018.609 1.95 1.95 13.527 3.07268 3.98771 25.09 1490.30 1018.639 2.25 2.25 13.519 3.07253 3.98835 25.09 1490.29 1018.645 2.55 2.55 13.513 3.07298 3.98951 25.10 1490.28 1018.653 2.85 2.85 13.507 3.07287 3.98999 25.10 1490.27 1018.658 3.15 3.15 13.504 3.07379 3.99149 25.11 1490.28 1018.668 3.45 3.45 13.502 3.07355 3.99143 25.11 1490.27 1018.669 3.75 3.75 13.498 3.07403 3.99248 25.12 1490.27 1018.677 4.05 4.05 13.491 3.07476 3.99411 25.13 1490.27 1018.687 4.35 4.35 13.488 3.07661 3.99679 25.14 1490.28 1018.703 4.65 4.65 13.487 3.07698 3.99744 25.15 1490.29 1018.708 4.95 4.95 13.486 3.07797 3.99885 25.16 1490.30 1018.717 5.25 5.25 13.484 3.07879 4.00011 25.17 1490.31 1018.726 5.55 5.55 13.480 3.07938 4.00125 25.18 1490.31 1018.734 5.85 5.85 13.475 3.08031 4.00296 25.19 1490.31 1018.745 6.15 6.15 13.472 3.08160 4.00496 25.20 1490.32 1018.757 6.45 6.45 13.470 3.08252 4.00639 25.21 1490.33 1018.766 6.75 6.75 13.468 3.08316 4.00746 25.22 1490.34 1018.774 7.05 7.05 13.467 3.08382 4.00841 25.22 1490.35 1018.780 7.35 7.35 13.464 3.08446 4.00953 25.23 1490.35 1018.788 7.65 7.65 13.461 3.08487 4.01034 25.24 1490.35 1018.794 7.95 7.95 13.459 3.08528 4.01116 25.24 1490.36 1018.800 8.25 8.25 13.458 3.08568 4.01177 25.25 1490.36 1018.804 8.55 8.55 13.456 3.08620 4.01266 25.25 1490.37 1018.811 8.85 8.85 13.453 3.08710 4.01411 25.26 1490.37 1018.820 9.15 9.15 13.451 3.08762 4.01498 25.27 1490.38 1018.826 9.45 9.45 13.449 3.08832 4.01612 25.27 1490.39 1018.834 9.75 9.75 13.445 3.08958 4.01822 25.29 1490.39 1018.847 10.05 10.05 13.442 3.08969 4.01865 25.29 1490.39 1018.851 10.35 10.35 13.439 3.09153 4.02137 25.31 1490.41 1018.867 10.65 10.65 13.435 3.09239 4.02285 25.32 1490.41 1018.877 10.95 10.95 13.433 3.09304 4.02396 25.33 1490.42 1018.885 11.25 11.25 13.431 3.09404 4.02542 25.34 1490.43 1018.894 11.55 11.55 13.428 3.09454 4.02644 25.34 1490.43 1018.901 11.85 11.85 13.424 3.09526 4.02780 25.35 1490.43 1018.910 12.15 12.15 13.421 3.09550 4.02843 25.36 1490.43 1018.915 12.45 12.45 13.418 3.09655 4.03007 25.37 1490.44 1018.926 12.75 12.75 13.414 3.09801 4.03238 25.39 1490.45 1018.940 13.05 13.05 13.411 3.09922 4.03427 25.40 1490.46 1018.952 13.35 13.35 13.408 3.10044 4.03619 25.41 1490.47 1018.964 13.65 13.65 13.401 3.10205 4.03902 25.43 1490.47 1018.981 13.95 13.95 13.395 3.10527 4.04382 25.46 1490.50 1019.009 14.25 14.25 13.392 3.10657 4.04583 25.48 1490.51 1019.022 14.55 14.55 13.385 3.10756 4.04789 25.49 1490.51 1019.035 14.85 14.85 13.376 3.11052 4.05274 25.52 1490.52 1019.063 15.15 15.15 13.372 3.11217 4.05523 25.54 1490.53 1019.078 15.45 15.45 13.368 3.11422 4.05833 25.56 1490.55 1019.097 15.75 15.75 13.363 3.11705 4.06256 25.59 1490.57 1019.122 16.05 16.05 13.355 3.11944 4.06658 25.62 1490.58 1019.146 16.35 16.35 13.347 3.11989 4.06797 25.63 1490.57 1019.155 16.65 16.65 13.343 3.12015 4.06875 25.63 1490.56 1019.161 16.95 16.95 13.337 3.12118 4.07077 25.64 1490.56 1019.174 17.25 17.25 13.335 3.12341 4.07386 25.67 1490.59 1019.192 17.55 17.55 13.334 3.12391 4.07464 25.67 1490.59 1019.198 17.85 17.85 13.332 3.12425 4.07530 25.68 1490.60 1019.203 18.15 18.15 13.328 3.12426 4.07567 25.68 1490.59 1019.207 18.45 18.45 13.321 3.12490 4.07730 25.69 1490.59 1019.218 18.75 18.75 13.314 3.12690 4.08059 25.71 1490.60 1019.238 19.05 19.05 13.307 3.12781 4.08251 25.72 1490.59 1019.250 19.35 19.35 13.305 3.12878 4.08404 25.73 1490.60 1019.260 19.65 19.65 13.304 3.12879 4.08413 25.73 1490.60 1019.262 19.95 19.95 13.304 3.12925 4.08475 25.74 1490.61 1019.267 20.25 20.25 13.303 3.12910 4.08465 25.74 1490.61 1019.267 20.55 20.55 13.303 3.12945 4.08517 25.74 1490.62 1019.272 20.85 20.85 13.302 3.13020 4.08623 25.75 1490.63 1019.279 21.15 21.15 13.300 3.13076 4.08712 25.75 1490.64 1019.285 21.45 21.45 13.298 3.13117 4.08795 25.76 1490.64 1019.291 21.75 21.75 13.297 3.13128 4.08817 25.76 1490.64 1019.293 22.05 22.05 13.297 3.13079 4.08754 25.76 1490.64 1019.291 22.35 22.35 13.299 3.13156 4.08833 25.76 1490.66 1019.297 22.65 22.65 13.298 3.13194 4.08886 25.77 1490.67 1019.301 22.95 22.95 13.298 3.13223 4.08928 25.77 1490.68 1019.304 23.25 23.25 13.296 3.13162 4.08866 25.77 1490.67 1019.303 23.55 23.55 13.297 3.13157 4.08855 25.76 1490.68 1019.303 23.85 23.85 13.295 3.13227 4.08970 25.77 1490.68 1019.311 24.24 24.24 13.295 3.13244 4.08990 25.77 1490.69 1019.314