*2017/12/13 11:31:17.97 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/07/19 00:53:07.000 END TIME : UTC 2016/07/19 00:53:21.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 71 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 6 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 21.15 2 Depth metres 0.15 21.121 3 Temperature 'deg C (ITS90)' 13.631 16.277 4 Salinity PSS-78 27.097 28.295 5 Speed:Sound m/s 1494.729 1501.558 6 Density kg/m^3 1019.62 1021.18 $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 ' ' 7 F R4 2 5 -99 ' ' 8 F R4 2 6 -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 : 608 LATITUDE : 48 46.10762 N ! (deg min) LONGITUDE : 123 33.70949 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 01:58:31 71 71 HDREDIT2 3.1.1 2017/12/13 11:31:17 ? ? $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:58:30 -HEADER EDITS: 2017/12/13 11:31:17 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: Salinity [PSS-78] Format: F10.3 ==> F7.2 Channel 6: Density [kg/m^3] Format: F10.3 ==> F9.3 Channel 5: Speed:Sound [m/s] Format: F10.3 ==> F8.2 $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_20160719_005307 % Cast time (UTC),2016-07-19 00:53:07 % Cast time (local),2016-07-19 00:53:07 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,48.7684604 % Start longitude,-123.5618249 % Start altitude,-21.1299991607666 % Start GPS horizontal error(Meter),2.8399999141693115 % Start GPS vertical error(Meter),4.179999828338623 % Start GPS number of satellites,5 % End latitude,48.7681385 % End longitude,-123.5621365 % End altitude,-16.399999618530273 % End GPS horizontal error(Meter),4.6700000762939453 % End GPS vertical error(Meter),6.6399998664855957 % End GPS number of satellites,5 % Cast duration (Seconds),83.2 % 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”. !--1--- --2--- ---3--- --4--- ---5--- ---6---- !Pressu Depth Tempera Salini Speed: Density !re ture ty Sound !------ ------ ------- ------ ------- -------- *END OF HEADER 0.15 0.15 16.277 27.10 1501.56 1019.620 0.45 0.45 16.111 27.20 1501.16 1019.734 0.75 0.75 15.964 27.26 1500.77 1019.817 1.05 1.05 15.881 27.29 1500.55 1019.861 1.35 1.35 15.756 27.37 1500.25 1019.945 1.65 1.65 15.616 27.45 1499.90 1020.041 1.95 1.95 15.576 27.43 1499.76 1020.033 2.25 2.25 15.549 27.42 1499.66 1020.031 2.55 2.55 15.495 27.44 1499.52 1020.060 2.85 2.85 15.426 27.46 1499.33 1020.091 3.15 3.15 15.296 27.54 1499.01 1020.184 3.45 3.45 15.172 27.57 1498.65 1020.232 3.75 3.75 15.086 27.55 1498.36 1020.241 4.05 4.05 14.959 27.59 1498.00 1020.298 4.35 4.35 14.830 27.68 1497.68 1020.390 4.65 4.65 14.722 27.74 1497.41 1020.462 4.95 4.95 14.648 27.76 1497.20 1020.495 5.25 5.25 14.576 27.80 1497.01 1020.536 5.55 5.55 14.495 27.84 1496.80 1020.586 5.85 5.85 14.418 27.88 1496.60 1020.635 6.15 6.14 14.379 27.90 1496.50 1020.658 6.45 6.45 14.338 27.92 1496.39 1020.684 6.75 6.75 14.279 27.95 1496.24 1020.722 7.05 7.04 14.216 27.98 1496.07 1020.756 7.35 7.34 14.151 28.01 1495.90 1020.793 7.65 7.64 14.093 28.03 1495.74 1020.826 7.95 7.94 14.064 28.04 1495.66 1020.842 8.25 8.24 14.039 28.05 1495.59 1020.854 8.55 8.54 14.017 28.06 1495.53 1020.864 8.85 8.84 13.995 28.05 1495.46 1020.866 9.15 9.14 13.959 28.07 1495.37 1020.890 9.45 9.44 13.938 28.09 1495.32 1020.906 9.75 9.74 13.915 28.09 1495.26 1020.920 10.05 10.04 13.888 28.12 1495.20 1020.942 10.35 10.34 13.870 28.12 1495.15 1020.953 10.65 10.64 13.857 28.13 1495.12 1020.965 10.95 10.94 13.849 28.14 1495.11 1020.972 11.25 11.24 13.839 28.15 1495.10 1020.985 11.55 11.54 13.826 28.15 1495.06 1020.989 11.85 11.84 13.810 28.16 1495.03 1021.002 12.15 12.14 13.801 28.17 1495.01 1021.013 12.45 12.44 13.794 28.18 1495.00 1021.020 12.75 12.74 13.786 28.18 1494.98 1021.025 13.05 13.04 13.783 28.18 1494.98 1021.029 13.35 13.34 13.778 28.20 1494.98 1021.040 13.65 13.63 13.771 28.20 1494.97 1021.050 13.95 13.93 13.765 28.21 1494.96 1021.053 14.25 14.23 13.755 28.22 1494.94 1021.067 14.55 14.53 13.746 28.22 1494.93 1021.073 14.85 14.83 13.735 28.23 1494.90 1021.084 15.15 15.13 13.724 28.24 1494.88 1021.091 15.45 15.43 13.712 28.24 1494.85 1021.098 15.75 15.73 13.706 28.24 1494.84 1021.103 16.05 16.03 13.698 28.25 1494.82 1021.110 16.35 16.33 13.689 28.26 1494.81 1021.120 16.65 16.63 13.683 28.26 1494.80 1021.126 16.95 16.93 13.680 28.27 1494.80 1021.131 17.25 17.23 13.680 28.26 1494.80 1021.128 17.55 17.53 13.675 28.26 1494.79 1021.130 17.85 17.83 13.669 28.27 1494.78 1021.141 18.15 18.13 13.661 28.27 1494.76 1021.145 18.45 18.43 13.656 28.28 1494.75 1021.149 18.75 18.73 13.650 28.28 1494.74 1021.152 19.05 19.03 13.652 28.28 1494.75 1021.153 19.35 19.32 13.652 28.27 1494.75 1021.152 19.65 19.62 13.643 28.28 1494.73 1021.158 19.95 19.92 13.643 28.28 1494.74 1021.161 20.25 20.22 13.643 28.28 1494.74 1021.162 20.55 20.52 13.637 28.28 1494.73 1021.167 20.85 20.82 13.631 28.29 1494.73 1021.177 21.15 21.12 13.632 28.30 1494.74 1021.180