*2019/08/26 15:30:37.86 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/22 21:08:53.000 END TIME : UTC 2017/06/22 21:09:09.000 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 24.3 3 Temperature 'deg C (ITS90)' 11.298 13.13 4 Conductivity S/m 2.32745 2.74302 5 Conductance:Specific S/m 3.052 3.77779 6 Salinity PSS-78 18.68 23.48 7 Speed:Sound m/s 1480.89 1482.82 8 Density kg/m^3 1013.769 1017.883 $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 : 557 LATITUDE : 49 18.17678 N ! (deg min) LONGITUDE : 122 58.85064 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 2017/12/09 01:07:34 81 81 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:37 81 81 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:07:34 -HEADER EDITS: 2017/12/13 11:33:22 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 15:30:37 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_20170622_210853 % Cast time (UTC),2017-06-22 21:08:53 % Cast time (local),2017-06-22 21:08:53 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3029463 % Start longitude,-122.980844 % Start altitude,-14.699999809265137 % Start GPS horizontal error(Meter),1.6299999952316284 % Start GPS vertical error(Meter),2.6500000953674316 % Start GPS number of satellites,9 % End latitude,49.3032711 % End longitude,-122.9804594 % End altitude,-28.479999542236328 % End GPS horizontal error(Meter),16.930000305175781 % End GPS vertical error(Meter),25.420000076293945 % End GPS number of satellites,5 % Cast duration (Seconds),64.4 % 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 13.014 2.33229 3.06770 18.78 1481.10 1013.864 0.45 0.45 13.130 2.32745 3.05200 18.68 1481.40 1013.769 0.75 0.75 12.837 2.45345 3.24213 19.94 1481.87 1014.793 1.05 1.05 12.748 2.56313 3.39502 20.97 1482.77 1015.603 1.35 1.36 12.730 2.57143 3.40764 21.06 1482.82 1015.673 1.65 1.66 12.684 2.57171 3.41221 21.09 1482.69 1015.704 1.95 1.96 12.666 2.57265 3.41507 21.10 1482.66 1015.722 2.25 2.26 12.638 2.57354 3.41881 21.13 1482.59 1015.747 2.55 2.56 12.607 2.57535 3.42404 21.16 1482.53 1015.779 2.85 2.86 12.573 2.58328 3.43767 21.25 1482.52 1015.856 3.15 3.16 12.514 2.59265 3.45553 21.37 1482.46 1015.958 3.45 3.46 12.447 2.59383 3.46333 21.42 1482.28 1016.009 3.75 3.77 12.386 2.59549 3.47116 21.47 1482.13 1016.058 4.05 4.07 12.326 2.60298 3.48681 21.57 1482.05 1016.149 4.35 4.37 12.267 2.61280 3.50549 21.69 1481.99 1016.255 4.65 4.67 12.200 2.62235 3.52470 21.82 1481.91 1016.365 4.95 4.97 12.147 2.63744 3.54996 21.99 1481.93 1016.506 5.25 5.27 12.130 2.64367 3.55998 22.05 1481.95 1016.562 5.55 5.57 12.104 2.64116 3.55913 22.05 1481.85 1016.561 5.85 5.87 12.067 2.65654 3.58344 22.21 1481.92 1016.695 6.15 6.17 12.013 2.66991 3.60676 22.36 1481.92 1016.825 6.45 6.47 11.957 2.67893 3.62438 22.48 1481.87 1016.926 6.75 6.77 11.911 2.69118 3.64546 22.62 1481.87 1017.043 7.05 7.07 11.870 2.69371 3.65298 22.67 1481.79 1017.089 7.35 7.37 11.813 2.69739 3.66361 22.74 1481.67 1017.153 7.65 7.67 11.761 2.69951 3.67171 22.79 1481.56 1017.202 7.95 7.98 11.721 2.70280 3.68022 22.84 1481.48 1017.253 8.25 8.28 11.679 2.70938 3.69333 22.93 1481.44 1017.328 8.55 8.58 11.635 2.71069 3.69961 22.97 1481.34 1017.367 8.85 8.88 11.604 2.71612 3.71011 23.04 1481.31 1017.427 9.15 9.18 11.588 2.71845 3.71499 23.07 1481.30 1017.456 9.45 9.48 11.576 2.71915 3.71711 23.09 1481.28 1017.470 9.75 9.78 11.569 2.71994 3.71895 23.10 1481.27 1017.482 10.05 10.08 11.553 2.72116 3.72217 23.12 1481.24 1017.502 10.35 10.38 11.538 2.72127 3.72387 23.13 1481.21 1017.514 10.65 10.68 11.519 2.72176 3.72651 23.15 1481.16 1017.531 10.95 10.98 11.500 2.72356 3.73089 23.17 1481.13 1017.557 11.25 11.28 11.493 2.72404 3.73231 23.18 1481.12 1017.567 11.55 11.58 11.488 2.72560 3.73492 23.20 1481.13 1017.582 11.85 11.88 11.483 2.72627 3.73640 23.21 1481.13 1017.592 12.15 12.18 11.479 2.72569 3.73599 23.21 1481.12 1017.592 12.45 12.48 11.479 2.72552 3.73572 23.20 1481.12 1017.591 12.75 12.78 11.477 2.72419 3.73410 23.19 1481.11 1017.584 13.05 13.09 11.469 2.72498 3.73599 23.21 1481.10 1017.597 13.35 13.38 11.462 2.72487 3.73659 23.21 1481.08 1017.602 13.65 13.69 11.456 2.72501 3.73738 23.21 1481.07 1017.608 13.95 13.99 11.454 2.72542 3.73820 23.22 1481.07 1017.614 14.25 14.29 11.454 2.72553 3.73832 23.22 1481.08 1017.616 14.55 14.59 11.455 2.72590 3.73875 23.22 1481.09 1017.619 14.85 14.89 11.456 2.72630 3.73916 23.23 1481.10 1017.622 15.15 15.19 11.456 2.72569 3.73831 23.22 1481.10 1017.619 15.45 15.49 11.453 2.72644 3.73969 23.23 1481.11 1017.628 15.75 15.79 11.451 2.72611 3.73942 23.23 1481.10 1017.628 16.05 16.09 11.450 2.72658 3.74019 23.23 1481.11 1017.634 16.35 16.39 11.447 2.72645 3.74028 23.23 1481.10 1017.636 16.65 16.69 11.445 2.72628 3.74024 23.23 1481.10 1017.637 16.95 16.99 11.444 2.72616 3.74016 23.23 1481.10 1017.638 17.25 17.29 11.442 2.72640 3.74071 23.23 1481.10 1017.643 17.55 17.59 11.441 2.72597 3.74022 23.23 1481.10 1017.641 17.85 17.89 11.440 2.72563 3.73986 23.23 1481.10 1017.641 18.15 18.19 11.440 2.72587 3.74021 23.23 1481.11 1017.644 18.45 18.49 11.439 2.72591 3.74041 23.23 1481.11 1017.647 18.75 18.80 11.434 2.72582 3.74074 23.23 1481.10 1017.650 19.05 19.09 11.428 2.72582 3.74133 23.24 1481.09 1017.655 19.35 19.40 11.422 2.72615 3.74241 23.25 1481.08 1017.663 19.65 19.70 11.414 2.72605 3.74312 23.25 1481.06 1017.669 19.95 20.00 11.405 2.72725 3.74571 23.27 1481.05 1017.685 20.25 20.30 11.399 2.72767 3.74686 23.27 1481.04 1017.692 20.55 20.60 11.390 2.72981 3.75075 23.30 1481.05 1017.715 20.85 20.90 11.364 2.73121 3.75533 23.33 1480.99 1017.744 21.15 21.20 11.347 2.73028 3.75583 23.33 1480.94 1017.749 21.45 21.50 11.334 2.73048 3.75744 23.34 1480.91 1017.760 21.75 21.80 11.338 2.73260 3.75993 23.36 1480.95 1017.774 22.05 22.10 11.352 2.73453 3.76122 23.37 1481.01 1017.781 22.35 22.40 11.336 2.73541 3.76403 23.39 1480.98 1017.799 22.65 22.70 11.312 2.73623 3.76771 23.41 1480.93 1017.822 22.95 23.00 11.301 2.73547 3.76778 23.41 1480.89 1017.825 23.25 23.30 11.299 2.73574 3.76834 23.41 1480.90 1017.829 23.55 23.60 11.298 2.73995 3.77426 23.45 1480.95 1017.862 23.85 23.90 11.299 2.73783 3.77120 23.43 1480.93 1017.847 24.24 24.30 11.304 2.74302 3.77779 23.48 1481.01 1017.883