*2019/08/26 15:30:36.10 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/20 22:56:53.000 END TIME : UTC 2017/06/20 22:57:16.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 118 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 35.12 2 Depth metres 0.15 35.12 3 Temperature 'deg C (ITS90)' 10.051 13.016 4 Conductivity S/m 2.35727 3.11481 5 Conductance:Specific S/m 3.1004 4.44328 6 Salinity PSS-78 19 27.94 7 Speed:Sound m/s 1480.86 1482.04 8 Density kg/m^3 1014.033 1021.602 $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 : 518 LATITUDE : 49 17.91226 N ! (deg min) LONGITUDE : 123 4.99117 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 00:29:49 118 118 HDREDIT2 3.1.1 2017/12/13 11:33:21 ? ? CALIB 12.0 2019/08/26 15:30:36 118 118 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:29:48 -HEADER EDITS: 2017/12/13 11:33:21 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_225653 % Cast time (UTC),2017-06-20 22:56:53 % Cast time (local),2017-06-20 22:56:53 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2985376 % Start longitude,-123.0831861 % Start altitude,-12.239999771118164 % Start GPS horizontal error(Meter),2 % Start GPS vertical error(Meter),2.4100000858306885 % Start GPS number of satellites,7 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),245.4 % 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 13.016 2.35727 3.10040 19.00 1481.37 1014.033 0.45 0.45 12.953 2.37365 3.12709 19.18 1481.36 1014.180 0.75 0.75 12.906 2.38672 3.14819 19.31 1481.37 1014.297 1.05 1.05 12.759 2.43141 3.21967 19.79 1481.41 1014.688 1.35 1.36 12.664 2.47230 3.28204 20.20 1481.58 1015.026 1.65 1.66 12.582 2.50862 3.33755 20.57 1481.73 1015.326 1.95 1.96 12.595 2.50560 3.33236 20.54 1481.74 1015.299 2.25 2.26 12.641 2.49968 3.32042 20.46 1481.82 1015.232 2.55 2.56 12.577 2.53065 3.36727 20.77 1481.97 1015.486 2.85 2.86 12.456 2.53841 3.38856 20.91 1481.70 1015.614 3.15 3.16 12.437 2.54118 3.39398 20.95 1481.68 1015.646 3.45 3.46 12.407 2.55539 3.41568 21.09 1481.76 1015.764 3.75 3.77 12.348 2.56251 3.43062 21.19 1481.67 1015.851 4.05 4.07 12.319 2.56463 3.43607 21.23 1481.62 1015.884 4.35 4.37 12.293 2.57244 3.44894 21.31 1481.63 1015.956 4.65 4.67 12.264 2.57803 3.45911 21.38 1481.61 1016.014 4.95 4.97 12.237 2.58112 3.46581 21.42 1481.57 1016.053 5.25 5.27 12.223 2.58220 3.46857 21.44 1481.55 1016.071 5.55 5.57 12.212 2.58456 3.47277 21.47 1481.55 1016.095 5.85 5.87 12.200 2.58611 3.47592 21.49 1481.54 1016.115 6.15 6.17 12.174 2.58657 3.47898 21.51 1481.47 1016.135 6.45 6.47 12.146 2.58711 3.48233 21.53 1481.40 1016.157 6.75 6.78 12.095 2.58903 3.48976 21.57 1481.28 1016.203 7.05 7.08 12.022 2.59153 3.50001 21.64 1481.10 1016.267 7.35 7.38 11.926 2.60287 3.52440 21.80 1480.96 1016.407 7.65 7.68 11.821 2.62098 3.55908 22.03 1480.86 1016.602 7.95 7.98 11.751 2.66296 3.62299 22.46 1481.13 1016.948 8.25 8.28 11.710 2.69332 3.66840 22.76 1481.35 1017.193 8.55 8.58 11.513 2.73642 3.74719 23.29 1481.28 1017.632 8.85 8.88 11.390 2.75874 3.79050 23.57 1481.18 1017.875 9.15 9.18 11.313 2.77177 3.81649 23.75 1481.12 1018.022 9.45 9.48 11.270 2.78036 3.83283 23.85 1481.10 1018.114 9.75 9.78 11.232 2.79347 3.85498 24.00 1481.14 1018.237 10.05 10.08 11.184 2.81908 3.89546 24.28 1481.30 1018.458 10.35 10.38 11.113 2.86092 3.96102 24.72 1481.59 1018.816 10.65 10.68 11.081 2.87218 3.98016 24.85 1481.63 1018.922 10.95 10.98 11.030 2.88214 3.99961 24.98 1481.61 1019.032 11.25 11.28 11.017 2.88960 4.01146 25.06 1481.66 1019.098 11.55 11.58 11.011 2.89268 4.01643 25.09 1481.68 1019.126 11.85 11.88 11.011 2.89521 4.01984 25.12 1481.72 1019.146 12.15 12.18 11.006 2.89799 4.02430 25.15 1481.74 1019.171 12.45 12.48 11.002 2.89896 4.02614 25.16 1481.74 1019.183 12.75 12.78 11.000 2.90129 4.02961 25.18 1481.77 1019.203 13.05 13.08 10.985 2.90359 4.03441 25.21 1481.76 1019.231 13.35 13.38 10.977 2.90552 4.03800 25.24 1481.77 1019.252 13.65 13.68 10.966 2.90821 4.04302 25.27 1481.77 1019.281 13.95 13.98 10.945 2.91226 4.05102 25.32 1481.76 1019.327 14.25 14.28 10.912 2.91626 4.06034 25.39 1481.72 1019.382 14.55 14.58 10.876 2.92445 4.07580 25.49 1481.72 1019.469 14.85 14.88 10.807 2.93422 4.09729 25.63 1481.65 1019.591 15.15 15.18 10.731 2.95357 4.13301 25.87 1481.67 1019.791 15.45 15.48 10.644 2.97238 4.16957 26.11 1481.65 1019.996 15.75 15.78 10.561 2.99431 4.21011 26.39 1481.68 1020.222 16.05 16.08 10.511 3.00705 4.23397 26.55 1481.70 1020.355 16.35 16.38 10.471 3.01113 4.24456 26.62 1481.64 1020.417 16.65 16.68 10.440 3.01712 4.25662 26.70 1481.63 1020.486 16.95 16.98 10.409 3.02207 4.26733 26.77 1481.61 1020.547 17.25 17.28 10.378 3.02788 4.27934 26.85 1481.60 1020.616 17.55 17.58 10.351 3.03602 4.29411 26.95 1481.62 1020.698 17.85 17.88 10.310 3.04879 4.31712 27.10 1481.67 1020.827 18.15 18.18 10.263 3.05732 4.33508 27.22 1481.64 1020.929 18.45 18.48 10.237 3.06342 4.34689 27.30 1481.65 1020.996 18.75 18.78 10.208 3.06633 4.35465 27.35 1481.61 1021.041 19.05 19.08 10.191 3.06936 4.36106 27.39 1481.60 1021.078 19.35 19.38 10.171 3.07817 4.37606 27.50 1481.66 1021.162 19.65 19.68 10.155 3.08689 4.39042 27.59 1481.72 1021.242 19.95 19.98 10.138 3.08945 4.39618 27.63 1481.71 1021.276 20.25 20.28 10.131 3.09022 4.39819 27.64 1481.71 1021.288 20.55 20.58 10.118 3.09163 4.40175 27.67 1481.69 1021.310 20.85 20.88 10.114 3.09346 4.40484 27.69 1481.71 1021.328 21.15 21.18 10.114 3.09406 4.40571 27.70 1481.72 1021.334 21.45 21.47 10.110 3.09594 4.40897 27.72 1481.74 1021.353 21.75 21.77 10.114 3.09788 4.41120 27.73 1481.78 1021.366 22.05 22.07 10.112 3.09852 4.41238 27.74 1481.78 1021.374 22.35 22.37 10.111 3.09957 4.41392 27.75 1481.80 1021.384 22.65 22.67 10.112 3.10127 4.41632 27.77 1481.82 1021.398 22.95 22.97 10.111 3.10363 4.41976 27.79 1481.86 1021.418 23.25 23.27 10.109 3.10462 4.42137 27.80 1481.87 1021.428 23.55 23.57 10.103 3.10642 4.42475 27.82 1481.88 1021.448 23.85 23.87 10.106 3.10648 4.42448 27.82 1481.89 1021.448 24.15 24.17 10.100 3.10728 4.42631 27.84 1481.89 1021.459 24.45 24.47 10.104 3.10744 4.42605 27.83 1481.91 1021.459 24.75 24.77 10.097 3.10859 4.42859 27.85 1481.90 1021.475 25.05 25.07 10.095 3.10868 4.42897 27.85 1481.91 1021.478 25.35 25.37 10.088 3.10874 4.42986 27.86 1481.89 1021.485 25.65 25.67 10.091 3.10948 4.43065 27.86 1481.91 1021.490 25.95 25.96 10.088 3.10898 4.43030 27.86 1481.90 1021.490 26.25 26.26 10.083 3.10962 4.43186 27.87 1481.90 1021.500 26.55 26.56 10.080 3.10904 4.43139 27.87 1481.89 1021.499 26.85 26.86 10.077 3.11066 4.43403 27.89 1481.91 1021.514 27.15 27.16 10.076 3.11027 4.43365 27.88 1481.91 1021.514 27.45 27.46 10.074 3.11052 4.43417 27.89 1481.91 1021.518 27.75 27.76 10.076 3.11117 4.43490 27.89 1481.93 1021.523 28.05 28.06 10.074 3.11074 4.43458 27.89 1481.92 1021.523 28.35 28.36 10.070 3.11142 4.43602 27.90 1481.92 1021.532 28.65 28.66 10.073 3.11163 4.43593 27.90 1481.94 1021.533 28.95 28.96 10.069 3.11236 4.43751 27.91 1481.94 1021.543 29.25 29.26 10.071 3.11259 4.43756 27.91 1481.95 1021.544 29.55 29.56 10.065 3.11295 4.43880 27.92 1481.95 1021.553 29.85 29.86 10.061 3.11277 4.43906 27.92 1481.94 1021.556 30.15 30.16 10.063 3.11284 4.43889 27.92 1481.95 1021.556 30.45 30.45 10.059 3.11353 4.44043 27.93 1481.95 1021.566 30.75 30.75 10.057 3.11288 4.43975 27.92 1481.94 1021.563 31.05 31.05 10.057 3.11295 4.43983 27.92 1481.95 1021.565 31.35 31.35 10.059 3.11370 4.44070 27.93 1481.97 1021.571 31.65 31.65 10.065 3.11330 4.43935 27.92 1481.98 1021.565 31.95 31.95 10.058 3.11337 4.44036 27.93 1481.97 1021.572 32.25 32.25 10.069 3.11328 4.43883 27.92 1482.01 1021.564 32.55 32.55 10.065 3.11328 4.43932 27.92 1482.00 1021.568 32.85 32.85 10.062 3.11387 4.44052 27.93 1482.00 1021.576 33.15 33.15 10.066 3.11293 4.43866 27.91 1482.01 1021.567 33.45 33.45 10.057 3.11400 4.44131 27.93 1482.00 1021.583 33.75 33.75 10.059 3.11385 4.44090 27.93 1482.01 1021.582 34.05 34.05 10.054 3.11344 4.44091 27.93 1481.99 1021.584 34.35 34.35 10.066 3.11426 4.44058 27.93 1482.04 1021.583 34.65 34.65 10.063 3.11388 4.44037 27.93 1482.04 1021.583 34.95 34.95 10.056 3.11440 4.44209 27.94 1482.03 1021.594 35.12 35.12 10.051 3.11481 4.44328 27.94 1482.02 1021.602