*2019/08/26 15:30:29.96 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 23:10:19.000 END TIME : UTC 2017/02/28 23:10:33.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 73 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.87 2 Depth metres 0.15 21.84 3 Temperature 'deg C (ITS90)' 7.646 7.672 4 Conductivity S/m 2.82561 2.86462 5 Conductance:Specific S/m 4.32668 4.38395 6 Salinity PSS-78 26.86 27.25 7 Speed:Sound m/s 1471.08 1471.97 8 Density kg/m^3 1020.935 1021.336 $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 : 277 LATITUDE : 49 18.15013 N ! (deg min) LONGITUDE : 123 6.20533 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 20:29:40 73 73 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:29 73 73 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:29:40 -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 15:30:29 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_20170228_231019 % Cast time (UTC),2017-02-28 23:10:19 % Cast time (local),2017-02-28 23:10:19 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3025021 % Start longitude,-123.1034222 % Start altitude,-16.809999465942383 % Start GPS horizontal error(Meter),7.0900001525878906 % Start GPS vertical error(Meter),12.890000343322754 % Start GPS number of satellites,5 % End latitude,49.3027748 % End longitude,-123.1036768 % End altitude,-20.930000305175781 % End GPS horizontal error(Meter),4.8400001525878906 % End GPS vertical error(Meter),8.75 % End GPS number of satellites,5 % Cast duration (Seconds),94.8 % 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 7.659 2.82611 4.32668 26.86 1471.09 1020.935 0.45 0.45 7.657 2.82719 4.32867 26.87 1471.10 1020.947 0.75 0.75 7.657 2.82765 4.32925 26.88 1471.11 1020.951 1.05 1.05 7.656 2.82738 4.32900 26.88 1471.11 1020.951 1.35 1.35 7.656 2.82706 4.32848 26.87 1471.11 1020.950 1.65 1.65 7.653 2.82732 4.32936 26.88 1471.11 1020.956 1.95 1.95 7.649 2.82703 4.32937 26.88 1471.10 1020.957 2.25 2.25 7.646 2.82561 4.32760 26.86 1471.08 1020.949 2.55 2.55 7.646 2.82620 4.32856 26.87 1471.09 1020.956 2.85 2.85 7.647 2.82742 4.33023 26.88 1471.11 1020.966 3.15 3.15 7.649 2.82736 4.32989 26.88 1471.12 1020.965 3.45 3.44 7.652 2.82939 4.33261 26.90 1471.16 1020.981 3.75 3.74 7.654 2.82946 4.33246 26.90 1471.17 1020.982 4.05 4.04 7.656 2.82979 4.33274 26.90 1471.19 1020.984 4.35 4.34 7.657 2.82951 4.33222 26.90 1471.19 1020.983 4.65 4.64 7.655 2.82945 4.33228 26.90 1471.19 1020.985 4.95 4.94 7.656 2.82993 4.33293 26.90 1471.20 1020.989 5.25 5.24 7.656 2.83230 4.33651 26.93 1471.24 1021.010 5.55 5.54 7.659 2.83462 4.33977 26.95 1471.28 1021.029 5.85 5.84 7.661 2.83445 4.33921 26.95 1471.29 1021.027 6.15 6.14 7.662 2.83462 4.33939 26.95 1471.30 1021.029 6.45 6.44 7.662 2.83397 4.33828 26.94 1471.30 1021.024 6.75 6.74 7.662 2.83450 4.33912 26.94 1471.31 1021.030 7.05 7.04 7.662 2.83497 4.33991 26.95 1471.32 1021.036 7.35 7.34 7.662 2.83571 4.34096 26.96 1471.33 1021.043 7.65 7.64 7.662 2.83586 4.34117 26.96 1471.34 1021.045 7.95 7.94 7.663 2.83557 4.34062 26.95 1471.34 1021.043 8.25 8.24 7.665 2.83578 4.34072 26.95 1471.36 1021.045 8.55 8.54 7.663 2.83671 4.34235 26.97 1471.37 1021.055 8.85 8.84 7.664 2.83778 4.34386 26.98 1471.39 1021.065 9.15 9.13 7.665 2.83957 4.34655 26.99 1471.42 1021.080 9.45 9.44 7.664 2.83689 4.34248 26.97 1471.39 1021.060 9.75 9.73 7.663 2.83530 4.34019 26.95 1471.37 1021.049 10.05 10.03 7.664 2.83587 4.34101 26.96 1471.38 1021.055 10.35 10.33 7.665 2.83528 4.33997 26.95 1471.38 1021.050 10.65 10.63 7.664 2.83558 4.34047 26.95 1471.39 1021.054 10.95 10.93 7.664 2.83513 4.33988 26.95 1471.39 1021.052 11.25 11.23 7.665 2.83572 4.34063 26.95 1471.40 1021.058 11.55 11.53 7.665 2.83677 4.34226 26.96 1471.42 1021.068 11.85 11.83 7.665 2.84072 4.34831 27.00 1471.48 1021.101 12.15 12.13 7.666 2.84055 4.34792 27.00 1471.48 1021.101 12.45 12.43 7.665 2.84093 4.34859 27.01 1471.49 1021.106 12.75 12.73 7.666 2.84442 4.35384 27.04 1471.54 1021.135 13.05 13.03 7.666 2.84349 4.35242 27.03 1471.54 1021.129 13.35 13.33 7.666 2.84138 4.34920 27.01 1471.51 1021.113 13.65 13.63 7.665 2.84143 4.34930 27.01 1471.52 1021.115 13.95 13.93 7.667 2.84334 4.35202 27.03 1471.55 1021.130 14.25 14.23 7.665 2.84473 4.35437 27.05 1471.57 1021.144 14.55 14.53 7.666 2.84502 4.35469 27.05 1471.58 1021.147 14.85 14.83 7.666 2.84572 4.35572 27.05 1471.60 1021.154 15.15 15.12 7.666 2.84534 4.35514 27.05 1471.60 1021.152 15.45 15.43 7.665 2.84545 4.35552 27.05 1471.60 1021.156 15.75 15.72 7.666 2.84399 4.35320 27.04 1471.58 1021.145 16.05 16.02 7.666 2.84517 4.35490 27.05 1471.61 1021.155 16.35 16.32 7.666 2.84988 4.36219 27.10 1471.67 1021.195 16.65 16.62 7.664 2.85167 4.36509 27.12 1471.69 1021.212 16.95 16.92 7.667 2.85198 4.36523 27.12 1471.71 1021.214 17.25 17.22 7.666 2.85157 4.36470 27.12 1471.71 1021.213 17.55 17.52 7.666 2.85223 4.36575 27.12 1471.72 1021.220 17.85 17.82 7.667 2.85245 4.36596 27.12 1471.73 1021.222 18.15 18.12 7.668 2.85239 4.36578 27.12 1471.74 1021.222 18.45 18.42 7.667 2.85220 4.36563 27.12 1471.74 1021.223 18.75 18.72 7.667 2.85149 4.36453 27.11 1471.73 1021.218 19.05 19.02 7.667 2.85247 4.36599 27.12 1471.75 1021.227 19.35 19.32 7.667 2.85360 4.36771 27.14 1471.77 1021.238 19.65 19.62 7.667 2.85299 4.36677 27.13 1471.77 1021.234 19.95 19.92 7.667 2.85421 4.36860 27.14 1471.79 1021.245 20.25 20.22 7.667 2.85473 4.36946 27.15 1471.80 1021.251 20.55 20.52 7.665 2.85219 4.36580 27.12 1471.77 1021.233 20.85 20.82 7.666 2.85496 4.36988 27.15 1471.81 1021.256 21.15 21.11 7.667 2.85396 4.36832 27.14 1471.80 1021.249 21.45 21.41 7.668 2.86357 4.38280 27.24 1471.94 1021.328 21.87 21.84 7.672 2.86462 4.38395 27.25 1471.97 1021.336