*2019/08/26 15:30:12.43 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/20 22:20:16.000 END TIME : UTC 2016/10/20 22:20:28.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 61 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.23 2 Depth metres 0.15 18.38 3 Temperature 'deg C (ITS90)' 10.564 10.755 4 Conductivity S/m 0.273E-01 2.75847 5 Conductance:Specific S/m 0.3818E-01 3.87645 6 Salinity PSS-78 0.18 24.09 7 Speed:Sound m/s 1450.44 1479.03 8 Density kg/m^3 999.776 1018.448 $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 : 2016-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 427 LATITUDE : 49 7.04180 N ! (deg min) LONGITUDE : 123 4.92694 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 2017/12/08 23:00:09 61 61 HDREDIT2 3.1.1 2017/12/13 11:31:15 ? ? CALIB 12.0 2019/08/26 15:30:12 61 61 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 23:00:09 -HEADER EDITS: 2017/12/13 11:31:15 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 15:30:12 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_20161020_222016 % Cast time (UTC),2016-10-20 22:20:16 % Cast time (local),2016-10-20 22:20:16 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1173634 % Start longitude,-123.0821157 % Start altitude,-14.720000267028809 % Start GPS horizontal error(Meter),3.7100000381469727 % Start GPS vertical error(Meter),4.880000114440918 % Start GPS number of satellites,5 % End latitude,49.1170694 % End longitude,-123.0825114 % End altitude,-42.540000915527344 % End GPS horizontal error(Meter),17.899999618530273 % End GPS vertical error(Meter),25.520000457763672 % End GPS number of satellites,4 % Cast duration (Seconds),105 % 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 10.745 0.02730 0.03818 0.18 1450.44 999.776 0.45 0.46 10.744 0.02733 0.03823 0.18 1450.44 999.777 0.75 0.77 10.730 0.03659 0.05121 0.24 1450.47 999.830 1.05 1.07 10.732 0.03994 0.05589 0.27 1450.51 999.849 1.35 1.38 10.738 0.04102 0.05739 0.27 1450.55 999.856 1.65 1.68 10.744 0.04244 0.05936 0.28 1450.59 999.864 1.95 1.99 10.747 0.04756 0.06652 0.32 1450.65 999.893 2.25 2.29 10.755 0.05031 0.07035 0.34 1450.71 999.909 2.55 2.60 10.751 0.05568 0.07788 0.38 1450.74 999.940 2.85 2.91 10.745 0.05919 0.08280 0.40 1450.76 999.961 3.15 3.21 10.740 0.06158 0.08615 0.42 1450.77 999.976 3.45 3.52 10.737 0.07034 0.09842 0.48 1450.84 1000.027 3.75 3.82 10.730 0.09268 0.12969 0.64 1451.01 1000.154 4.05 4.13 10.721 0.22550 0.31564 1.63 1452.20 1000.928 4.35 4.43 10.706 0.43722 0.61224 3.28 1454.18 1002.223 4.65 4.74 10.695 0.71913 1.00732 5.59 1456.95 1004.019 4.95 5.04 10.686 0.89278 1.25087 7.05 1458.70 1005.158 5.25 5.35 10.678 1.08511 1.52068 8.71 1460.67 1006.442 5.55 5.65 10.672 1.25606 1.76058 10.20 1462.45 1007.601 5.85 5.95 10.659 1.46697 2.05694 12.07 1464.66 1009.055 6.15 6.26 10.647 1.59794 2.24137 13.25 1466.03 1009.971 6.45 6.56 10.633 1.67384 2.34869 13.94 1466.82 1010.509 6.75 6.86 10.624 1.79844 2.52423 15.07 1468.15 1011.393 7.05 7.17 10.614 1.83414 2.57500 15.40 1468.52 1011.651 7.35 7.47 10.610 1.85001 2.59758 15.55 1468.69 1011.767 7.65 7.77 10.606 1.92454 2.70251 16.24 1469.50 1012.300 7.95 8.07 10.601 1.95087 2.73994 16.48 1469.78 1012.492 8.25 8.37 10.595 2.04049 2.86629 17.31 1470.76 1013.138 8.55 8.68 10.588 2.10149 2.95255 17.88 1471.42 1013.582 8.85 8.98 10.581 2.12115 2.98077 18.07 1471.63 1013.729 9.15 9.28 10.578 2.15110 3.02306 18.35 1471.96 1013.947 9.45 9.58 10.576 2.17697 3.05962 18.59 1472.25 1014.137 9.75 9.88 10.575 2.22164 3.12244 19.01 1472.75 1014.462 10.05 10.18 10.574 2.24984 3.16218 19.27 1473.07 1014.669 10.35 10.48 10.571 2.28435 3.21095 19.60 1473.46 1014.923 10.65 10.79 10.570 2.37668 3.34088 20.47 1474.50 1015.600 10.95 11.09 10.567 2.50103 3.51594 21.64 1475.91 1016.516 11.25 11.39 10.564 2.59547 3.64898 22.55 1476.99 1017.216 11.55 11.69 10.565 2.62808 3.69479 22.86 1477.37 1017.459 11.85 11.99 10.564 2.65733 3.73603 23.14 1477.71 1017.678 12.15 12.29 10.564 2.66697 3.74953 23.23 1477.83 1017.751 12.45 12.59 10.565 2.67245 3.75715 23.28 1477.90 1017.792 12.75 12.89 10.567 2.67458 3.75996 23.30 1477.93 1017.808 13.05 13.19 10.570 2.67779 3.76412 23.33 1477.98 1017.831 13.35 13.49 10.572 2.68242 3.77044 23.37 1478.05 1017.866 13.65 13.79 10.574 2.68708 3.77677 23.41 1478.11 1017.901 13.95 14.09 10.577 2.69550 3.78832 23.49 1478.22 1017.963 14.25 14.39 10.580 2.70072 3.79526 23.54 1478.30 1018.000 14.55 14.69 10.582 2.70413 3.79987 23.57 1478.35 1018.026 14.85 14.99 10.579 2.70574 3.80243 23.59 1478.36 1018.041 15.15 15.29 10.576 2.70638 3.80370 23.60 1478.36 1018.050 15.45 15.59 10.574 2.72020 3.82332 23.73 1478.52 1018.155 15.75 15.89 10.574 2.74326 3.85575 23.95 1478.79 1018.328 16.05 16.19 10.572 2.74905 3.86404 24.01 1478.86 1018.374 16.35 16.50 10.575 2.75224 3.86827 24.04 1478.91 1018.397 16.65 16.80 10.578 2.75476 3.87145 24.06 1478.95 1018.415 16.95 17.09 10.581 2.75743 3.87486 24.08 1479.00 1018.434 17.25 17.39 10.581 2.75800 3.87571 24.09 1479.01 1018.440 17.55 17.70 10.580 2.75784 3.87555 24.09 1479.01 1018.441 17.85 18.00 10.579 2.75827 3.87621 24.09 1479.02 1018.445 18.23 18.38 10.580 2.75847 3.87645 24.09 1479.03 1018.448