*2019/08/26 15:30:30.99 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 00:59:15.000 END TIME : UTC 2017/03/02 00:59:30.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 79 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 23.6 2 Depth metres 0.15 23.57 3 Temperature 'deg C (ITS90)' 7.444 7.636 4 Conductivity S/m 2.77687 2.86907 5 Conductance:Specific S/m 4.26816 4.39557 6 Salinity PSS-78 26.44 27.32 7 Speed:Sound m/s 1470.06 1471.94 8 Density kg/m^3 1020.624 1021.405 $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 : 293 LATITUDE : 49 17.70904 N ! (deg min) LONGITUDE : 123 1.66433 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 20:45:36 79 79 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:30 79 79 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:45:35 -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_20170302_005915 % Cast time (UTC),2017-03-02 00:59:15 % Cast time (local),2017-03-02 00:59:15 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2951506 % Start longitude,-123.0277389 % Start altitude,-8.5200004577636719 % Start GPS horizontal error(Meter),1.7200000286102295 % Start GPS vertical error(Meter),2.4800000190734863 % Start GPS number of satellites,7 % End latitude,49.2949039 % End longitude,-123.0267371 % End altitude,-29.479999542236328 % End GPS horizontal error(Meter),2.630000114440918 % End GPS vertical error(Meter),4.429999828338623 % End GPS number of satellites,7 % Cast duration (Seconds),115.6 % 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 7.533 2.77708 4.26816 26.44 1470.08 1020.624 0.45 0.45 7.529 2.77707 4.26855 26.45 1470.07 1020.628 0.75 0.75 7.523 2.77687 4.26903 26.45 1470.06 1020.631 1.05 1.05 7.523 2.77980 4.27362 26.48 1470.10 1020.657 1.35 1.35 7.523 2.78090 4.27525 26.49 1470.12 1020.667 1.65 1.65 7.524 2.78055 4.27460 26.49 1470.12 1020.665 1.95 1.95 7.525 2.77981 4.27329 26.48 1470.12 1020.659 2.25 2.25 7.527 2.78009 4.27347 26.48 1470.13 1020.662 2.55 2.55 7.527 2.78016 4.27362 26.48 1470.14 1020.664 2.85 2.85 7.527 2.78038 4.27400 26.48 1470.14 1020.667 3.15 3.15 7.526 2.78012 4.27369 26.48 1470.14 1020.667 3.45 3.45 7.524 2.77997 4.27366 26.48 1470.14 1020.668 3.75 3.75 7.522 2.78008 4.27413 26.48 1470.14 1020.672 4.05 4.04 7.519 2.78086 4.27569 26.49 1470.15 1020.682 4.35 4.34 7.515 2.78107 4.27657 26.50 1470.14 1020.688 4.65 4.64 7.510 2.78158 4.27800 26.51 1470.14 1020.697 4.95 4.94 7.505 2.78173 4.27890 26.51 1470.13 1020.703 5.25 5.24 7.499 2.78212 4.28026 26.52 1470.12 1020.712 5.55 5.54 7.495 2.78248 4.28145 26.53 1470.12 1020.719 5.85 5.84 7.493 2.78286 4.28223 26.53 1470.12 1020.725 6.15 6.14 7.493 2.78337 4.28309 26.54 1470.13 1020.731 6.45 6.44 7.491 2.78322 4.28307 26.54 1470.13 1020.732 6.75 6.74 7.491 2.78332 4.28322 26.54 1470.14 1020.734 7.05 7.04 7.490 2.78405 4.28454 26.55 1470.15 1020.742 7.35 7.34 7.488 2.78532 4.28664 26.56 1470.17 1020.755 7.65 7.64 7.478 2.78724 4.29101 26.59 1470.16 1020.780 7.95 7.94 7.461 2.78847 4.29505 26.61 1470.14 1020.803 8.25 8.24 7.451 2.78888 4.29711 26.63 1470.11 1020.816 8.55 8.54 7.445 2.79089 4.30093 26.65 1470.13 1020.837 8.85 8.84 7.444 2.79278 4.30397 26.67 1470.16 1020.855 9.15 9.14 7.446 2.79472 4.30676 26.69 1470.19 1020.871 9.45 9.44 7.450 2.79623 4.30854 26.70 1470.23 1020.882 9.75 9.74 7.455 2.80021 4.31400 26.74 1470.30 1020.912 10.05 10.04 7.457 2.80052 4.31417 26.74 1470.31 1020.915 10.35 10.34 7.456 2.80171 4.31614 26.76 1470.33 1020.926 10.65 10.64 7.456 2.80044 4.31416 26.74 1470.32 1020.917 10.95 10.94 7.458 2.80073 4.31434 26.75 1470.33 1020.919 11.25 11.23 7.460 2.80182 4.31584 26.76 1470.36 1020.929 11.55 11.53 7.463 2.80283 4.31697 26.76 1470.38 1020.936 11.85 11.83 7.467 2.80326 4.31707 26.77 1470.41 1020.938 12.15 12.13 7.474 2.80553 4.31969 26.78 1470.46 1020.953 12.45 12.43 7.480 2.80848 4.32336 26.81 1470.52 1020.974 12.75 12.73 7.488 2.81053 4.32547 26.82 1470.58 1020.986 13.05 13.03 7.500 2.81388 4.32908 26.85 1470.66 1021.007 13.35 13.33 7.516 2.82282 4.34072 26.93 1470.83 1021.070 13.65 13.63 7.524 2.82874 4.34867 26.99 1470.94 1021.114 13.95 13.93 7.526 2.82754 4.34654 26.97 1470.93 1021.104 14.25 14.23 7.529 2.82748 4.34613 26.97 1470.94 1021.103 14.55 14.53 7.529 2.83083 4.35121 27.01 1470.99 1021.131 14.85 14.83 7.540 2.83774 4.36042 27.07 1471.12 1021.182 15.15 15.13 7.552 2.84333 4.36732 27.12 1471.23 1021.220 15.45 15.43 7.562 2.84196 4.36387 27.10 1471.25 1021.203 15.75 15.73 7.569 2.84337 4.36519 27.11 1471.29 1021.211 16.05 16.03 7.580 2.84566 4.36723 27.12 1471.36 1021.223 16.35 16.33 7.587 2.84970 4.37245 27.16 1471.44 1021.252 16.65 16.63 7.593 2.85436 4.37880 27.20 1471.52 1021.287 16.95 16.93 7.600 2.85769 4.38295 27.23 1471.59 1021.311 17.25 17.22 7.606 2.85876 4.38385 27.24 1471.62 1021.317 17.55 17.52 7.610 2.85943 4.38435 27.24 1471.65 1021.321 17.85 17.82 7.611 2.86090 4.38640 27.26 1471.68 1021.333 18.15 18.12 7.614 2.86156 4.38703 27.26 1471.70 1021.338 18.45 18.42 7.616 2.86142 4.38648 27.26 1471.71 1021.336 18.75 18.72 7.618 2.86103 4.38567 27.25 1471.71 1021.333 19.05 19.02 7.617 2.85903 4.38277 27.23 1471.69 1021.319 19.35 19.32 7.612 2.85879 4.38302 27.23 1471.68 1021.321 19.65 19.62 7.614 2.86064 4.38565 27.25 1471.71 1021.337 19.95 19.92 7.615 2.85753 4.38069 27.22 1471.68 1021.311 20.25 20.22 7.611 2.85706 4.38054 27.21 1471.66 1021.312 20.55 20.52 7.610 2.85961 4.38456 27.24 1471.70 1021.335 20.85 20.82 7.613 2.86092 4.38617 27.25 1471.73 1021.345 21.15 21.12 7.613 2.86186 4.38754 27.26 1471.75 1021.353 21.45 21.42 7.615 2.86356 4.38994 27.28 1471.78 1021.367 21.75 21.72 7.620 2.86437 4.39049 27.28 1471.81 1021.372 22.05 22.02 7.625 2.86510 4.39097 27.29 1471.84 1021.375 22.35 22.32 7.627 2.86570 4.39164 27.29 1471.86 1021.380 22.65 22.61 7.629 2.86701 4.39332 27.30 1471.89 1021.390 22.95 22.91 7.632 2.86857 4.39534 27.32 1471.92 1021.403 23.25 23.21 7.636 2.86907 4.39557 27.32 1471.94 1021.405 23.60 23.57 7.636 2.86852 4.39466 27.31 1471.94 1021.402