*2019/08/26 15:30:34.16 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 23:57:06.000 END TIME : UTC 2017/03/03 23:57:17.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 58 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.23 2 Depth metres 0.15 17.2 3 Temperature 'deg C (ITS90)' 7.448 7.459 4 Conductivity S/m 2.77305 2.80177 5 Conductance:Specific S/m 4.27307 4.31584 6 Salinity PSS-78 26.47 26.75 7 Speed:Sound m/s 1469.77 1470.45 8 Density kg/m^3 1020.652 1020.955 $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 : 342 LATITUDE : 49 18.66969 N ! (deg min) LONGITUDE : 123 7.77327 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 21:34:19 58 58 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:34 58 58 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:34:18 -HEADER EDITS: 2017/12/13 11:33:19 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 15:30:34 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_235706 % Cast time (UTC),2017-03-03 23:57:06 % Cast time (local),2017-03-03 23:57:06 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3111615 % Start longitude,-123.1295545 % Start altitude,-23.479999542236328 % Start GPS horizontal error(Meter),2.9800000190734863 % Start GPS vertical error(Meter),3.6400001049041748 % Start GPS number of satellites,10 % End latitude,49.3112509 % End longitude,-123.1298595 % End altitude,-19.049999237060547 % End GPS horizontal error(Meter),7.0199999809265137 % End GPS vertical error(Meter),8.8500003814697266 % End GPS number of satellites,9 % Cast duration (Seconds),53.2 % 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 7.448 2.77305 4.27307 26.47 1469.77 1020.652 0.45 0.45 7.450 2.77693 4.27874 26.50 1469.83 1020.683 0.75 0.75 7.450 2.77756 4.27972 26.51 1469.85 1020.690 1.05 1.05 7.452 2.77675 4.27829 26.50 1469.85 1020.684 1.35 1.35 7.453 2.77772 4.27959 26.51 1469.87 1020.692 1.65 1.65 7.455 2.77818 4.28010 26.52 1469.88 1020.696 1.95 1.95 7.458 2.77760 4.27876 26.51 1469.89 1020.690 2.25 2.25 7.458 2.77759 4.27873 26.51 1469.89 1020.691 2.55 2.55 7.457 2.77729 4.27842 26.50 1469.89 1020.691 2.85 2.85 7.457 2.77766 4.27904 26.51 1469.90 1020.695 3.15 3.15 7.457 2.77848 4.28026 26.52 1469.92 1020.703 3.45 3.45 7.457 2.77820 4.27984 26.51 1469.92 1020.702 3.75 3.75 7.456 2.77884 4.28096 26.52 1469.93 1020.710 4.05 4.04 7.456 2.77841 4.28031 26.52 1469.93 1020.707 4.35 4.34 7.455 2.77884 4.28109 26.52 1469.93 1020.713 4.65 4.64 7.455 2.77921 4.28166 26.52 1469.94 1020.717 4.95 4.94 7.454 2.77985 4.28270 26.53 1469.96 1020.724 5.25 5.24 7.455 2.78095 4.28438 26.54 1469.97 1020.734 5.55 5.54 7.454 2.78215 4.28632 26.56 1469.99 1020.746 5.85 5.84 7.454 2.78206 4.28619 26.55 1470.00 1020.747 6.15 6.14 7.453 2.78224 4.28654 26.56 1470.00 1020.750 6.45 6.44 7.453 2.78284 4.28745 26.56 1470.02 1020.756 6.75 6.74 7.453 2.78130 4.28506 26.55 1470.00 1020.745 7.05 7.04 7.453 2.78148 4.28546 26.55 1470.00 1020.748 7.35 7.34 7.453 2.78193 4.28613 26.55 1470.02 1020.753 7.65 7.64 7.452 2.78323 4.28825 26.57 1470.04 1020.766 7.95 7.94 7.453 2.78446 4.29006 26.58 1470.06 1020.776 8.25 8.24 7.452 2.78288 4.28767 26.56 1470.04 1020.765 8.55 8.54 7.453 2.78325 4.28813 26.57 1470.05 1020.769 8.85 8.84 7.453 2.78387 4.28910 26.57 1470.07 1020.775 9.15 9.14 7.453 2.78400 4.28934 26.57 1470.07 1020.778 9.45 9.44 7.453 2.78477 4.29044 26.58 1470.09 1020.785 9.75 9.74 7.453 2.78641 4.29299 26.60 1470.11 1020.800 10.05 10.04 7.453 2.78661 4.29335 26.60 1470.12 1020.803 10.35 10.34 7.453 2.78744 4.29463 26.61 1470.13 1020.811 10.65 10.64 7.453 2.78974 4.29816 26.63 1470.17 1020.832 10.95 10.94 7.453 2.79238 4.30215 26.66 1470.21 1020.854 11.25 11.23 7.453 2.79355 4.30401 26.67 1470.23 1020.865 11.55 11.53 7.453 2.79495 4.30618 26.69 1470.25 1020.878 11.85 11.83 7.453 2.79435 4.30525 26.68 1470.25 1020.875 12.15 12.13 7.452 2.79502 4.30633 26.69 1470.26 1020.882 12.45 12.43 7.453 2.79510 4.30644 26.69 1470.27 1020.884 12.75 12.73 7.452 2.79667 4.30892 26.71 1470.29 1020.898 13.05 13.03 7.452 2.79697 4.30942 26.71 1470.30 1020.902 13.35 13.33 7.452 2.79808 4.31114 26.72 1470.32 1020.913 13.65 13.63 7.452 2.79874 4.31214 26.73 1470.33 1020.919 13.95 13.93 7.452 2.79888 4.31235 26.73 1470.34 1020.922 14.25 14.23 7.453 2.79909 4.31247 26.73 1470.35 1020.924 14.55 14.53 7.454 2.79957 4.31309 26.73 1470.36 1020.928 14.85 14.83 7.455 2.80051 4.31446 26.74 1470.38 1020.937 15.15 15.13 7.456 2.80067 4.31458 26.75 1470.39 1020.939 15.45 15.43 7.457 2.80062 4.31438 26.74 1470.40 1020.939 15.75 15.73 7.456 2.79960 4.31296 26.73 1470.39 1020.933 16.05 16.03 7.456 2.80078 4.31476 26.75 1470.41 1020.944 16.35 16.33 7.457 2.80109 4.31504 26.75 1470.42 1020.946 16.65 16.63 7.458 2.80082 4.31454 26.74 1470.42 1020.945 16.95 16.93 7.458 2.80161 4.31571 26.75 1470.44 1020.953 17.23 17.20 7.459 2.80177 4.31584 26.75 1470.45 1020.955