*2019/08/26 15:30:33.28 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 18:20:35.000 END TIME : UTC 2017/03/03 18:20:53.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 92 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.47 2 Depth metres 0.15 27.43 3 Temperature 'deg C (ITS90)' 7.395 7.702 4 Conductivity S/m 2.77312 2.89534 5 Conductance:Specific S/m 4.27968 4.42683 6 Salinity PSS-78 26.5 27.54 7 Speed:Sound m/s 1469.61 1472.54 8 Density kg/m^3 1020.691 1021.59 $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 : 329 LATITUDE : 49 17.28627 N ! (deg min) LONGITUDE : 123 5.13536 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 21:21:13 92 92 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:33 92 92 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:21:13 -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 15:30:33 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_182035 % Cast time (UTC),2017-03-03 18:20:35 % Cast time (local),2017-03-03 18:20:35 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2881045 % Start longitude,-123.0855894 % Start altitude,-8.25 % Start GPS horizontal error(Meter),15.590000152587891 % Start GPS vertical error(Meter),31.959999084472656 % Start GPS number of satellites,5 % End latitude,49.2882276 % End longitude,-123.0858823 % End altitude,6.1999998092651367 % End GPS horizontal error(Meter),16.600000381469727 % End GPS vertical error(Meter),36.020000457763672 % End GPS number of satellites,5 % Cast duration (Seconds),73 % 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 7.395 2.77312 4.28020 26.51 1469.61 1020.691 0.45 0.45 7.397 2.77352 4.28053 26.51 1469.63 1020.694 0.75 0.75 7.403 2.77350 4.27968 26.50 1469.65 1020.691 1.05 1.05 7.411 2.77495 4.28093 26.52 1469.70 1020.698 1.35 1.35 7.429 2.77665 4.28113 26.52 1469.78 1020.701 1.65 1.65 7.450 2.77820 4.28076 26.52 1469.87 1020.700 1.95 1.95 7.457 2.78297 4.28722 26.56 1469.96 1020.735 2.25 2.25 7.464 2.78448 4.28856 26.57 1470.00 1020.744 2.55 2.55 7.481 2.78801 4.29169 26.60 1470.10 1020.761 2.85 2.85 7.487 2.79266 4.29814 26.64 1470.18 1020.797 3.15 3.15 7.473 2.80047 4.31197 26.73 1470.25 1020.873 3.45 3.44 7.483 2.79595 4.30371 26.68 1470.23 1020.830 3.75 3.75 7.499 2.79512 4.30037 26.66 1470.27 1020.813 4.05 4.04 7.481 2.79751 4.30639 26.70 1470.25 1020.847 4.35 4.34 7.472 2.79771 4.30783 26.70 1470.23 1020.856 4.65 4.64 7.476 2.79940 4.30998 26.72 1470.27 1020.868 4.95 4.94 7.481 2.79782 4.30682 26.70 1470.27 1020.853 5.25 5.24 7.480 2.79664 4.30521 26.69 1470.25 1020.845 5.55 5.54 7.478 2.79683 4.30580 26.69 1470.26 1020.850 5.85 5.84 7.475 2.79731 4.30680 26.70 1470.26 1020.857 6.15 6.14 7.473 2.79837 4.30870 26.71 1470.27 1020.868 6.45 6.44 7.469 2.79849 4.30943 26.71 1470.27 1020.873 6.75 6.74 7.469 2.79919 4.31060 26.72 1470.28 1020.881 7.05 7.04 7.466 2.79898 4.31057 26.72 1470.27 1020.882 7.35 7.34 7.466 2.79860 4.30999 26.72 1470.27 1020.880 7.65 7.64 7.468 2.79868 4.30987 26.72 1470.29 1020.881 7.95 7.94 7.470 2.80054 4.31256 26.74 1470.32 1020.897 8.25 8.24 7.471 2.80177 4.31419 26.75 1470.34 1020.907 8.55 8.54 7.474 2.80303 4.31582 26.76 1470.37 1020.917 8.85 8.84 7.477 2.80257 4.31474 26.75 1470.38 1020.912 9.15 9.14 7.479 2.80330 4.31563 26.76 1470.40 1020.918 9.45 9.44 7.480 2.80326 4.31533 26.76 1470.41 1020.918 9.75 9.74 7.481 2.80429 4.31676 26.77 1470.43 1020.927 10.05 10.04 7.486 2.80540 4.31788 26.77 1470.46 1020.934 10.35 10.34 7.491 2.80523 4.31694 26.77 1470.48 1020.930 10.65 10.63 7.493 2.80597 4.31784 26.77 1470.50 1020.936 10.95 10.93 7.494 2.80556 4.31706 26.77 1470.50 1020.933 11.25 11.23 7.495 2.80612 4.31781 26.77 1470.52 1020.939 11.55 11.53 7.495 2.80614 4.31778 26.77 1470.52 1020.940 11.85 11.83 7.496 2.80709 4.31911 26.78 1470.54 1020.948 12.15 12.13 7.498 2.80733 4.31922 26.78 1470.56 1020.950 12.45 12.43 7.501 2.80859 4.32083 26.80 1470.59 1020.960 12.75 12.73 7.506 2.81012 4.32250 26.81 1470.63 1020.970 13.05 13.03 7.510 2.80987 4.32152 26.80 1470.64 1020.966 13.35 13.33 7.518 2.81147 4.32297 26.81 1470.69 1020.975 13.65 13.63 7.525 2.81218 4.32312 26.81 1470.72 1020.977 13.95 13.93 7.542 2.81526 4.32553 26.83 1470.82 1020.991 14.25 14.23 7.562 2.82148 4.33246 26.88 1470.96 1021.029 14.55 14.53 7.571 2.83450 4.35125 27.01 1471.16 1021.131 14.85 14.83 7.586 2.85328 4.37803 27.20 1471.46 1021.275 15.15 15.13 7.608 2.86222 4.38887 27.27 1471.64 1021.335 15.45 15.43 7.618 2.86558 4.39257 27.30 1471.72 1021.356 15.75 15.73 7.628 2.86750 4.39424 27.31 1471.78 1021.366 16.05 16.03 7.633 2.86800 4.39434 27.31 1471.81 1021.367 16.35 16.32 7.636 2.86805 4.39401 27.31 1471.82 1021.367 16.65 16.62 7.638 2.86791 4.39354 27.31 1471.83 1021.366 16.95 16.92 7.638 2.86807 4.39376 27.31 1471.84 1021.368 17.25 17.22 7.638 2.86828 4.39409 27.31 1471.84 1021.371 17.55 17.52 7.638 2.86808 4.39376 27.31 1471.85 1021.371 17.85 17.82 7.639 2.86807 4.39357 27.31 1471.85 1021.371 18.15 18.12 7.639 2.86862 4.39453 27.32 1471.86 1021.377 18.45 18.42 7.638 2.86780 4.39327 27.31 1471.86 1021.372 18.75 18.72 7.639 2.86824 4.39392 27.31 1471.87 1021.377 19.05 19.02 7.639 2.86869 4.39454 27.32 1471.88 1021.381 19.35 19.32 7.639 2.86833 4.39404 27.31 1471.88 1021.380 19.65 19.62 7.640 2.86889 4.39480 27.32 1471.89 1021.385 19.95 19.92 7.639 2.86815 4.39374 27.31 1471.89 1021.381 20.25 20.22 7.640 2.86835 4.39387 27.31 1471.90 1021.383 20.55 20.52 7.641 2.86868 4.39425 27.31 1471.91 1021.386 20.85 20.82 7.643 2.86889 4.39441 27.31 1471.92 1021.388 21.15 21.12 7.643 2.86928 4.39499 27.32 1471.93 1021.393 21.45 21.41 7.645 2.86962 4.39521 27.32 1471.95 1021.395 21.75 21.71 7.646 2.87022 4.39596 27.32 1471.96 1021.400 22.05 22.01 7.649 2.87089 4.39665 27.33 1471.98 1021.405 22.35 22.31 7.651 2.87204 4.39809 27.34 1472.01 1021.414 22.65 22.61 7.654 2.87388 4.40052 27.36 1472.05 1021.429 22.95 22.91 7.657 2.87581 4.40305 27.38 1472.09 1021.443 23.25 23.21 7.662 2.87834 4.40627 27.40 1472.14 1021.462 23.55 23.51 7.667 2.87964 4.40758 27.41 1472.17 1021.470 23.85 23.81 7.670 2.88070 4.40875 27.41 1472.20 1021.478 24.15 24.11 7.673 2.88217 4.41065 27.43 1472.23 1021.489 24.45 24.41 7.674 2.88421 4.41362 27.45 1472.27 1021.506 24.75 24.71 7.676 2.88481 4.41431 27.45 1472.29 1021.511 25.05 25.01 7.678 2.88591 4.41568 27.46 1472.31 1021.520 25.35 25.31 7.681 2.88684 4.41673 27.47 1472.34 1021.527 25.65 25.61 7.683 2.88807 4.41833 27.48 1472.36 1021.537 25.95 25.91 7.687 2.88967 4.42018 27.50 1472.40 1021.548 26.25 26.20 7.691 2.89090 4.42152 27.50 1472.43 1021.556 26.55 26.50 7.693 2.89181 4.42267 27.51 1472.46 1021.564 26.85 26.80 7.696 2.89266 4.42355 27.52 1472.48 1021.570 27.15 27.10 7.699 2.89427 4.42563 27.53 1472.52 1021.582 27.47 27.43 7.702 2.89534 4.42683 27.54 1472.54 1021.590