*2019/08/26 15:30:38.33 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 15:33:02.000 END TIME : UTC 2017/06/23 15:33:15.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 67 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.89 2 Depth metres 0.15 19.94 3 Temperature 'deg C (ITS90)' 11.458 13.901 4 Conductivity S/m 2.09917 2.77068 5 Conductance:Specific S/m 2.6981 3.79842 6 Salinity PSS-78 16.35 23.63 7 Speed:Sound m/s 1480.62 1483.84 8 Density kg/m^3 1011.847 1017.953 $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 : 568 LATITUDE : 49 17.64307 N ! (deg min) LONGITUDE : 122 58.86270 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 01:18:33 67 67 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:38 67 67 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:18:32 -HEADER EDITS: 2017/12/13 11:33:22 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_153302 % Cast time (UTC),2017-06-23 15:33:02 % Cast time (local),2017-06-23 15:33:02 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2940512 % Start longitude,-122.981045 % Start altitude,-21.920000076293945 % Start GPS horizontal error(Meter),2.2400000095367432 % Start GPS vertical error(Meter),2.9000000953674316 % Start GPS number of satellites,8 % End latitude,49.2933898 % End longitude,-122.9809352 % End altitude,-44.139999389648438 % End GPS horizontal error(Meter),33.020000457763672 % End GPS vertical error(Meter),80.620002746582031 % End GPS number of satellites,3 % Cast duration (Seconds),93.8 % 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 13.901 2.09917 2.69810 16.35 1481.33 1011.847 0.45 0.45 13.832 2.10076 2.70491 16.40 1481.15 1011.893 0.75 0.76 13.730 2.10473 2.71721 16.47 1480.89 1011.972 1.05 1.06 13.603 2.11399 2.73814 16.61 1480.62 1012.098 1.35 1.36 13.491 2.15536 2.79985 17.01 1480.71 1012.429 1.65 1.66 13.437 2.25700 2.93596 17.92 1481.59 1013.135 1.95 1.96 13.396 2.35293 3.06407 18.77 1482.45 1013.802 2.25 2.27 13.321 2.47374 3.22762 19.87 1483.49 1014.660 2.55 2.57 13.176 2.54678 3.33559 20.59 1483.84 1015.243 2.85 2.87 12.988 2.57145 3.38456 20.91 1483.57 1015.525 3.15 3.17 12.876 2.57876 3.40425 21.04 1483.33 1015.644 3.45 3.47 12.758 2.58275 3.42013 21.14 1483.05 1015.744 3.75 3.77 12.645 2.58743 3.43665 21.25 1482.78 1015.846 4.05 4.07 12.590 2.59280 3.44881 21.33 1482.69 1015.918 4.35 4.37 12.546 2.59841 3.46034 21.40 1482.63 1015.985 4.65 4.67 12.509 2.60297 3.46977 21.46 1482.58 1016.040 4.95 4.97 12.485 2.60864 3.47959 21.53 1482.58 1016.096 5.25 5.28 12.474 2.61173 3.48472 21.56 1482.58 1016.125 5.55 5.58 12.463 2.61231 3.48654 21.57 1482.56 1016.138 5.85 5.88 12.454 2.61612 3.49241 21.61 1482.58 1016.171 6.15 6.18 12.450 2.62054 3.49869 21.66 1482.62 1016.205 6.45 6.48 12.443 2.62175 3.50101 21.67 1482.62 1016.220 6.75 6.78 12.435 2.62327 3.50375 21.69 1482.62 1016.236 7.05 7.08 12.423 2.62698 3.50986 21.73 1482.63 1016.271 7.35 7.38 12.401 2.62996 3.51592 21.77 1482.60 1016.307 7.65 7.68 12.373 2.63302 3.52257 21.81 1482.56 1016.347 7.95 7.98 12.338 2.63796 3.53251 21.88 1482.52 1016.404 8.25 8.29 12.301 2.64918 3.55108 22.00 1482.54 1016.508 8.55 8.59 12.273 2.66148 3.57025 22.13 1482.60 1016.613 8.85 8.89 12.252 2.67414 3.58923 22.26 1482.68 1016.717 9.15 9.19 12.212 2.69177 3.61680 22.45 1482.77 1016.868 9.45 9.49 12.151 2.69576 3.62815 22.52 1482.64 1016.936 9.75 9.79 12.116 2.69917 3.63617 22.57 1482.59 1016.984 10.05 10.09 12.085 2.70327 3.64470 22.63 1482.55 1017.034 10.35 10.39 12.046 2.70491 3.65071 22.67 1482.46 1017.071 10.65 10.69 12.020 2.70679 3.65588 22.70 1482.41 1017.103 10.95 10.99 11.991 2.70834 3.66079 22.73 1482.36 1017.133 11.25 11.29 11.965 2.71166 3.66786 22.78 1482.32 1017.175 11.55 11.59 11.929 2.71419 3.67490 22.82 1482.25 1017.218 11.85 11.89 11.876 2.71990 3.68787 22.91 1482.17 1017.293 12.15 12.19 11.803 2.72817 3.70642 23.03 1482.06 1017.401 12.45 12.49 11.752 2.74769 3.73819 23.24 1482.14 1017.576 12.75 12.79 11.705 2.75204 3.74889 23.31 1482.06 1017.639 13.05 13.10 11.662 2.75784 3.76114 23.39 1482.01 1017.709 13.35 13.40 11.612 2.75934 3.76834 23.44 1481.89 1017.754 13.65 13.70 11.571 2.75926 3.77250 23.46 1481.78 1017.782 13.95 14.00 11.547 2.75968 3.77551 23.48 1481.72 1017.802 14.25 14.30 11.530 2.75987 3.77750 23.49 1481.68 1017.815 14.55 14.60 11.521 2.76068 3.77962 23.51 1481.66 1017.829 14.85 14.90 11.509 2.76111 3.78139 23.52 1481.64 1017.841 15.15 15.20 11.497 2.76191 3.78378 23.53 1481.62 1017.856 15.45 15.50 11.488 2.76358 3.78695 23.55 1481.62 1017.875 15.75 15.80 11.484 2.76413 3.78819 23.56 1481.62 1017.883 16.05 16.10 11.474 2.76622 3.79208 23.59 1481.62 1017.906 16.35 16.40 11.463 2.76702 3.79431 23.60 1481.60 1017.920 16.65 16.70 11.459 2.76787 3.79590 23.61 1481.61 1017.930 16.95 17.00 11.458 2.76879 3.79718 23.62 1481.62 1017.939 17.25 17.30 11.459 2.76973 3.79842 23.63 1481.64 1017.946 17.55 17.60 11.460 2.76911 3.79743 23.62 1481.64 1017.942 17.85 17.90 11.460 2.76901 3.79733 23.62 1481.64 1017.943 18.15 18.20 11.464 2.76928 3.79729 23.62 1481.66 1017.944 18.45 18.50 11.468 2.76903 3.79655 23.62 1481.67 1017.941 18.75 18.80 11.469 2.76936 3.79686 23.62 1481.68 1017.944 19.05 19.10 11.468 2.76914 3.79664 23.62 1481.68 1017.944 19.35 19.41 11.468 2.76909 3.79665 23.62 1481.69 1017.945 19.65 19.70 11.469 2.76954 3.79715 23.62 1481.70 1017.949 19.89 19.94 11.476 2.77068 3.79791 23.63 1481.74 1017.953