*2019/08/26 15:30:37.94 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/22 21:12:20.000 END TIME : UTC 2017/06/22 21:12:29.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 46 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.73 2 Depth metres 0.15 13.76 3 Temperature 'deg C (ITS90)' 11.69 13.43 4 Conductivity S/m 2.32283 2.70378 5 Conductance:Specific S/m 3.02218 3.68424 6 Salinity PSS-78 18.49 22.87 7 Speed:Sound m/s 1481.45 1482.75 8 Density kg/m^3 1013.573 1017.301 $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 : 559 LATITUDE : 49 18.36511 N ! (deg min) LONGITUDE : 122 58.83023 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 01:09:31 46 46 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:37 46 46 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:09:30 -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 15:30:37 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_20170622_211220 % Cast time (UTC),2017-06-22 21:12:20 % Cast time (local),2017-06-22 21:12:20 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3060851 % Start longitude,-122.9805038 % Start altitude,-16.049999237060547 % Start GPS horizontal error(Meter),1.6399999856948853 % Start GPS vertical error(Meter),2.7799999713897705 % Start GPS number of satellites,8 % End latitude,49.3062404 % End longitude,-122.9805265 % End altitude,-10.539999961853027 % End GPS horizontal error(Meter),12.170000076293945 % End GPS vertical error(Meter),23.040000915527344 % End GPS number of satellites,7 % Cast duration (Seconds),62.6 % 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 13.430 2.32283 3.02218 18.49 1482.21 1013.573 0.45 0.45 12.869 2.48336 3.27884 20.19 1482.27 1014.979 0.75 0.75 12.809 2.54357 3.36374 20.76 1482.73 1015.431 1.05 1.05 12.610 2.58526 3.43694 21.25 1482.62 1015.840 1.35 1.36 12.444 2.62199 3.50118 21.68 1482.55 1016.198 1.65 1.66 12.445 2.63393 3.51702 21.78 1482.68 1016.283 1.95 1.96 12.440 2.64111 3.52708 21.85 1482.75 1016.337 2.25 2.26 12.372 2.65079 3.54653 21.98 1482.66 1016.449 2.55 2.56 12.291 2.65683 3.56230 22.08 1482.51 1016.543 2.85 2.86 12.229 2.66281 3.57621 22.17 1482.40 1016.625 3.15 3.16 12.183 2.66711 3.58642 22.24 1482.32 1016.685 3.45 3.46 12.129 2.66885 3.59405 22.29 1482.19 1016.733 3.75 3.76 12.076 2.66971 3.60030 22.33 1482.06 1016.774 4.05 4.06 12.032 2.67092 3.60628 22.36 1481.95 1016.811 4.35 4.36 12.004 2.67284 3.61158 22.40 1481.90 1016.844 4.65 4.67 11.969 2.67778 3.62162 22.46 1481.86 1016.902 4.95 4.96 11.935 2.68168 3.63026 22.52 1481.81 1016.953 5.25 5.27 11.906 2.68534 3.63810 22.57 1481.77 1016.999 5.55 5.57 11.874 2.68669 3.64304 22.60 1481.70 1017.029 5.85 5.87 11.841 2.68767 3.64764 22.63 1481.62 1017.059 6.15 6.17 11.824 2.69018 3.65279 22.67 1481.61 1017.089 6.45 6.47 11.807 2.69093 3.65550 22.68 1481.57 1017.107 6.75 6.77 11.789 2.69187 3.65851 22.70 1481.54 1017.126 7.05 7.07 11.778 2.69268 3.66070 22.72 1481.52 1017.140 7.35 7.37 11.767 2.69364 3.66308 22.73 1481.50 1017.155 7.65 7.67 11.763 2.69461 3.66484 22.74 1481.51 1017.166 7.95 7.97 11.757 2.69745 3.66931 22.77 1481.53 1017.191 8.25 8.27 11.746 2.69893 3.67237 22.79 1481.52 1017.210 8.55 8.57 11.738 2.69984 3.67444 22.81 1481.51 1017.223 8.85 8.87 11.729 2.70073 3.67655 22.82 1481.50 1017.237 9.15 9.18 11.719 2.70097 3.67790 22.83 1481.48 1017.246 9.45 9.47 11.711 2.70118 3.67900 22.84 1481.46 1017.254 9.75 9.78 11.707 2.70094 3.67908 22.84 1481.45 1017.256 10.05 10.08 11.704 2.70131 3.67989 22.84 1481.45 1017.262 10.35 10.38 11.702 2.70156 3.68041 22.84 1481.45 1017.266 10.65 10.68 11.702 2.70143 3.68027 22.84 1481.46 1017.267 10.95 10.98 11.701 2.70178 3.68074 22.85 1481.46 1017.271 11.25 11.28 11.701 2.70223 3.68140 22.85 1481.47 1017.276 11.55 11.58 11.701 2.70205 3.68118 22.85 1481.47 1017.276 11.85 11.88 11.699 2.70261 3.68211 22.86 1481.48 1017.282 12.15 12.18 11.698 2.70331 3.68319 22.86 1481.49 1017.289 12.45 12.48 11.699 2.70243 3.68191 22.85 1481.49 1017.284 12.75 12.78 11.700 2.70285 3.68234 22.86 1481.50 1017.287 13.05 13.08 11.697 2.70378 3.68388 22.87 1481.51 1017.297 13.35 13.38 11.692 2.70362 3.68424 22.87 1481.49 1017.301 13.73 13.76 11.690 2.70285 3.68337 22.86 1481.49 1017.298