*2019/08/26 15:30:36.03 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/20 22:47:22.000 END TIME : UTC 2017/06/20 22:47:35.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 70 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.75 2 Depth metres 0.15 20.79 3 Temperature 'deg C (ITS90)' 10.243 14.769 4 Conductivity S/m 1.93962 3.07654 5 Conductance:Specific S/m 2.43864 4.36373 6 Salinity PSS-78 14.67 27.42 7 Speed:Sound m/s 1481.06 1482.33 8 Density kg/m^3 1010.404 1021.094 $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 : 517 LATITUDE : 49 17.58663 N ! (deg min) LONGITUDE : 123 5.06528 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 00:28:49 70 70 HDREDIT2 3.1.1 2017/12/13 11:33:20 ? ? CALIB 12.0 2019/08/26 15:30:36 70 70 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:28:49 -HEADER EDITS: 2017/12/13 11:33:20 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 15:30:36 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_20170620_224722 % Cast time (UTC),2017-06-20 22:47:22 % Cast time (local),2017-06-20 22:47:22 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2931105 % Start longitude,-123.0844213 % Start altitude,-18.579999923706055 % Start GPS horizontal error(Meter),4.8400001525878906 % Start GPS vertical error(Meter),5.8400001525878906 % Start GPS number of satellites,7 % End latitude,49.2927446 % End longitude,-123.0804739 % End altitude,-82.040000915527344 % End GPS horizontal error(Meter),34.330001831054688 % End GPS vertical error(Meter),42.020000457763672 % End GPS number of satellites,4 % Cast duration (Seconds),194 % 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 14.769 1.93962 2.43864 14.67 1482.33 1010.404 0.45 0.45 14.177 2.03339 2.59515 15.68 1481.50 1011.285 0.75 0.76 14.010 2.11038 2.70491 16.40 1481.78 1011.868 1.05 1.06 13.898 2.16875 2.78772 16.95 1482.03 1012.308 1.35 1.36 13.700 2.21678 2.86404 17.45 1481.94 1012.728 1.65 1.66 13.506 2.26383 2.93961 17.94 1481.86 1013.144 1.95 1.96 13.357 2.31687 3.02014 18.48 1481.97 1013.580 2.25 2.27 13.239 2.36680 3.09475 18.97 1482.15 1013.983 2.55 2.57 13.101 2.39288 3.14016 19.27 1482.02 1014.238 2.85 2.87 12.993 2.40882 3.17008 19.46 1481.88 1014.408 3.15 3.17 12.918 2.42343 3.19565 19.63 1481.82 1014.552 3.45 3.47 12.858 2.43641 3.21785 19.78 1481.79 1014.676 3.75 3.77 12.797 2.43756 3.22452 19.82 1481.63 1014.720 4.05 4.07 12.750 2.44579 3.23944 19.92 1481.59 1014.805 4.35 4.38 12.729 2.44806 3.24423 19.95 1481.56 1014.834 4.65 4.68 12.705 2.46131 3.26388 20.08 1481.63 1014.940 4.95 4.98 12.644 2.46582 3.27519 20.16 1481.51 1015.008 5.25 5.28 12.608 2.47285 3.28768 20.24 1481.48 1015.079 5.55 5.58 12.568 2.47801 3.29807 20.30 1481.43 1015.139 5.85 5.88 12.456 2.49600 3.33195 20.53 1481.30 1015.331 6.15 6.18 12.255 2.52747 3.39216 20.92 1481.06 1015.671 6.45 6.48 12.140 2.57513 3.46682 21.42 1481.25 1016.077 6.75 6.79 12.023 2.60855 3.52289 21.80 1481.29 1016.386 7.05 7.09 11.929 2.62633 3.55594 22.01 1481.22 1016.571 7.35 7.39 11.848 2.64646 3.59102 22.25 1481.21 1016.766 7.65 7.69 11.699 2.68698 3.66081 22.71 1481.24 1017.152 7.95 7.99 11.610 2.72758 3.72518 23.14 1481.44 1017.502 8.25 8.29 11.535 2.74934 3.76265 23.39 1481.48 1017.710 8.55 8.59 11.387 2.77201 3.80911 23.70 1481.32 1017.973 8.85 8.89 11.256 2.82010 3.88918 24.24 1481.50 1018.413 9.15 9.19 11.072 2.84480 3.94321 24.60 1481.27 1018.719 9.45 9.49 11.048 2.86239 3.97030 24.78 1481.40 1018.867 9.75 9.79 11.039 2.86893 3.98029 24.85 1481.46 1018.923 10.05 10.09 11.017 2.87566 3.99214 24.93 1481.48 1018.989 10.35 10.39 11.007 2.88641 4.00810 25.04 1481.58 1019.077 10.65 10.69 11.006 2.89296 4.01735 25.10 1481.66 1019.128 10.95 10.99 10.997 2.89544 4.02182 25.13 1481.67 1019.154 11.25 11.29 11.001 2.90177 4.03007 25.19 1481.76 1019.199 11.55 11.59 10.998 2.90993 4.04181 25.27 1481.85 1019.263 11.85 11.89 10.953 2.91576 4.05492 25.35 1481.79 1019.338 12.15 12.19 10.884 2.92743 4.07906 25.51 1481.74 1019.475 12.45 12.49 10.844 2.93771 4.09789 25.64 1481.75 1019.581 12.75 12.79 10.820 2.94225 4.10702 25.70 1481.74 1019.633 13.05 13.09 10.811 2.94381 4.11020 25.72 1481.74 1019.652 13.35 13.39 10.808 2.94524 4.11257 25.74 1481.75 1019.667 13.65 13.69 10.804 2.94768 4.11639 25.76 1481.78 1019.689 13.95 13.99 10.800 2.94930 4.11917 25.78 1481.79 1019.705 14.25 14.29 10.796 2.95048 4.12126 25.80 1481.80 1019.718 14.55 14.59 10.791 2.95373 4.12642 25.83 1481.82 1019.748 14.85 14.89 10.783 2.95762 4.13274 25.87 1481.85 1019.783 15.15 15.19 10.774 2.96207 4.13991 25.92 1481.88 1019.824 15.45 15.49 10.748 2.96622 4.14881 25.98 1481.86 1019.875 15.75 15.79 10.717 2.97403 4.16328 26.08 1481.88 1019.957 16.05 16.09 10.698 2.97871 4.17209 26.14 1481.88 1020.007 16.35 16.39 10.681 2.98464 4.18245 26.21 1481.91 1020.066 16.65 16.69 10.650 2.98698 4.18927 26.25 1481.86 1020.106 16.95 16.99 10.626 2.98772 4.19317 26.28 1481.80 1020.130 17.25 17.29 10.606 2.98930 4.19770 26.30 1481.77 1020.158 17.55 17.59 10.522 2.99535 4.21617 26.43 1481.61 1020.265 17.85 17.89 10.411 3.02510 4.27141 26.80 1481.66 1020.573 18.15 18.19 10.359 3.05054 4.31371 27.08 1481.82 1020.806 18.45 18.49 10.311 3.06230 4.33615 27.23 1481.84 1020.932 18.75 18.79 10.298 3.06787 4.34566 27.30 1481.87 1020.986 19.05 19.09 10.285 3.07020 4.35060 27.33 1481.87 1021.015 19.35 19.39 10.266 3.07431 4.35868 27.39 1481.87 1021.061 19.65 19.68 10.263 3.07594 4.36145 27.40 1481.89 1021.078 19.95 19.98 10.252 3.07654 4.36367 27.42 1481.87 1021.092 20.25 20.28 10.243 3.07582 4.36373 27.42 1481.84 1021.094 20.55 20.58 10.259 3.07286 4.35750 27.38 1481.86 1021.060 20.75 20.79 10.273 3.07142 4.35384 27.35 1481.88 1021.040