*2019/08/26 15:30:38.64 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 15:47:26.000 END TIME : UTC 2017/06/23 15:47:38.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 63 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.66 2 Depth metres 0.15 18.72 3 Temperature 'deg C (ITS90)' 11.246 14.224 4 Conductivity S/m 2.33889 2.78005 5 Conductance:Specific S/m 2.98146 3.83461 6 Salinity PSS-78 18.25 23.86 7 Speed:Sound m/s 1481.16 1484.65 8 Density kg/m^3 1013.249 1018.166 $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 : 575 LATITUDE : 49 18.34685 N ! (deg min) LONGITUDE : 122 58.83151 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 01:25:44 63 63 HDREDIT2 3.1.1 2017/12/13 11:33:23 ? ? CALIB 12.0 2019/08/26 15:30:38 63 63 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:25:44 -HEADER EDITS: 2017/12/13 11:33:23 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 15:30:38 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_20170623_154726 % Cast time (UTC),2017-06-23 15:47:26 % Cast time (local),2017-06-23 15:47:26 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3057809 % Start longitude,-122.9805252 % Start altitude,-21.290000915527344 % Start GPS horizontal error(Meter),2.0799999237060547 % Start GPS vertical error(Meter),2.8199999332427979 % Start GPS number of satellites,7 % End latitude,49.3065246 % End longitude,-122.9810175 % End altitude,40.810001373291016 % End GPS horizontal error(Meter),85.510002136230469 % End GPS vertical error(Meter),79.040000915527344 % End GPS number of satellites,4 % Cast duration (Seconds),77.6 % 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 14.224 2.33889 2.98146 18.25 1484.65 1013.249 0.45 0.45 14.167 2.34088 2.98832 18.30 1484.52 1013.294 0.75 0.75 14.132 2.34925 3.00173 18.39 1484.50 1013.370 1.05 1.06 14.078 2.35279 3.01036 18.44 1484.39 1013.423 1.35 1.36 14.027 2.35201 3.01328 18.46 1484.24 1013.447 1.65 1.66 13.983 2.35422 3.01952 18.50 1484.14 1013.487 1.95 1.96 13.939 2.35515 3.02415 18.53 1484.03 1013.519 2.25 2.26 13.807 2.36637 3.04892 18.69 1483.77 1013.667 2.55 2.56 13.596 2.39287 3.09985 19.02 1483.45 1013.961 2.85 2.87 13.443 2.42742 3.15712 19.40 1483.37 1014.280 3.15 3.17 13.309 2.45544 3.20481 19.71 1483.28 1014.547 3.45 3.47 13.148 2.48192 3.25299 20.03 1483.10 1014.821 3.75 3.77 12.959 2.50881 3.30461 20.37 1482.85 1015.116 4.05 4.07 12.825 2.56661 3.39276 20.96 1483.08 1015.595 4.35 4.37 12.711 2.61693 3.46968 21.48 1483.29 1016.013 4.65 4.67 12.613 2.65460 3.52881 21.87 1483.42 1016.337 4.95 4.97 12.495 2.66194 3.54977 22.01 1483.17 1016.463 5.25 5.28 12.400 2.66601 3.56420 22.10 1482.96 1016.552 5.55 5.58 12.360 2.67467 3.57961 22.20 1482.94 1016.639 5.85 5.88 12.310 2.67817 3.58904 22.26 1482.85 1016.696 6.15 6.18 12.274 2.67817 3.59257 22.29 1482.75 1016.720 6.45 6.48 12.259 2.67815 3.59398 22.29 1482.71 1016.731 6.75 6.78 12.243 2.67856 3.59604 22.31 1482.67 1016.745 7.05 7.08 12.236 2.67875 3.59702 22.31 1482.66 1016.752 7.35 7.38 12.227 2.67860 3.59770 22.32 1482.64 1016.758 7.65 7.68 12.216 2.67855 3.59861 22.32 1482.61 1016.765 7.95 7.98 12.200 2.67881 3.60058 22.33 1482.57 1016.779 8.25 8.28 12.177 2.68357 3.60915 22.39 1482.57 1016.828 8.55 8.58 12.160 2.68614 3.61432 22.43 1482.55 1016.859 8.85 8.88 12.139 2.69097 3.62286 22.48 1482.55 1016.907 9.15 9.19 12.120 2.69411 3.62893 22.52 1482.53 1016.943 9.45 9.49 12.108 2.69580 3.63236 22.55 1482.52 1016.964 9.75 9.79 12.091 2.69660 3.63513 22.56 1482.49 1016.981 10.05 10.09 12.079 2.69757 3.63756 22.58 1482.47 1016.997 10.35 10.39 12.074 2.69833 3.63912 22.59 1482.47 1017.007 10.65 10.69 12.068 2.69931 3.64106 22.60 1482.47 1017.019 10.95 10.99 12.059 2.70143 3.64472 22.62 1482.47 1017.041 11.25 11.29 12.055 2.70211 3.64605 22.63 1482.47 1017.050 11.55 11.59 12.049 2.70376 3.64892 22.65 1482.48 1017.067 11.85 11.89 12.042 2.70587 3.65243 22.68 1482.49 1017.087 12.15 12.19 12.036 2.70598 3.65318 22.68 1482.47 1017.093 12.45 12.49 12.028 2.70705 3.65545 22.70 1482.47 1017.108 12.75 12.79 12.012 2.70883 3.65938 22.72 1482.45 1017.131 13.05 13.09 11.984 2.71020 3.66397 22.75 1482.39 1017.160 13.35 13.39 11.939 2.71136 3.67004 22.79 1482.28 1017.199 13.65 13.70 11.890 2.71296 3.67714 22.83 1482.16 1017.243 13.95 14.00 11.825 2.71741 3.68966 22.91 1482.03 1017.317 14.25 14.30 11.760 2.73631 3.72188 23.13 1482.06 1017.496 14.55 14.60 11.701 2.75646 3.75528 23.36 1482.13 1017.681 14.85 14.90 11.622 2.76291 3.77223 23.46 1481.98 1017.780 15.15 15.20 11.533 2.76798 3.78830 23.57 1481.79 1017.876 15.45 15.50 11.471 2.77139 3.79949 23.64 1481.66 1017.943 15.75 15.80 11.429 2.77118 3.80353 23.66 1481.54 1017.970 16.05 16.10 11.385 2.77183 3.80906 23.70 1481.43 1018.005 16.35 16.40 11.327 2.77335 3.81718 23.75 1481.29 1018.055 16.65 16.70 11.306 2.77467 3.82125 23.78 1481.25 1018.081 16.95 17.00 11.312 2.77521 3.82137 23.78 1481.28 1018.082 17.25 17.30 11.309 2.77616 3.82300 23.79 1481.29 1018.092 17.55 17.60 11.294 2.77725 3.82604 23.81 1481.26 1018.111 17.85 17.90 11.270 2.77814 3.82978 23.83 1481.21 1018.135 18.15 18.20 11.257 2.77863 3.83188 23.84 1481.18 1018.148 18.45 18.50 11.246 2.77939 3.83406 23.86 1481.16 1018.162 18.66 18.72 11.249 2.78005 3.83461 23.86 1481.18 1018.166