*2019/08/26 15:30:29.41 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 22:22:28.000 END TIME : UTC 2017/02/28 22:22:40.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 65 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.26 2 Depth metres 0.15 19.23 3 Temperature 'deg C (ITS90)' 7.603 7.728 4 Conductivity S/m 2.79883 2.89991 5 Conductance:Specific S/m 4.29069 4.43096 6 Salinity PSS-78 26.61 27.57 7 Speed:Sound m/s 1470.58 1472.55 8 Density kg/m^3 1020.75 1021.576 $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 : 268 LATITUDE : 49 18.44779 N ! (deg min) LONGITUDE : 123 4.93400 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1545005 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 20:21:10 65 65 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:29 65 65 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:21:09 -HEADER EDITS: 2017/12/13 11:33:16 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 15:30:29 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,CC1545005 % File name,CC1545005_20170228_222228 % Cast time (UTC),2017-02-28 22:22:28 % Cast time (local),2017-02-28 22:22:28 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3074631 % Start longitude,-123.0822333 % Start altitude,-14.920000076293945 % Start GPS horizontal error(Meter),3.9500000476837158 % Start GPS vertical error(Meter),4.940000057220459 % Start GPS number of satellites,6 % End latitude,49.3075518 % End longitude,-123.0825188 % End altitude,-12.770000457763672 % End GPS horizontal error(Meter),6.7600002288818359 % End GPS vertical error(Meter),8.8599996566772461 % End GPS number of satellites,6 % Cast duration (Seconds),65.6 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2015-11-20 % Temperature calibration date,2015-11-19 % Pressure calibration date,2015-11-17 % 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 7.606 2.79883 4.29192 26.62 1470.58 1020.750 0.45 0.45 7.607 2.80038 4.29419 26.63 1470.60 1020.763 0.75 0.75 7.607 2.80115 4.29529 26.64 1470.62 1020.770 1.05 1.05 7.610 2.80170 4.29572 26.64 1470.64 1020.774 1.35 1.35 7.615 2.80054 4.29340 26.63 1470.64 1020.763 1.65 1.65 7.618 2.79986 4.29191 26.62 1470.65 1020.756 1.95 1.95 7.623 2.79948 4.29069 26.61 1470.66 1020.751 2.25 2.25 7.626 2.80124 4.29295 26.62 1470.70 1020.764 2.55 2.55 7.627 2.80171 4.29356 26.63 1470.71 1020.769 2.85 2.85 7.624 2.80335 4.29647 26.65 1470.73 1020.786 3.15 3.15 7.622 2.80598 4.30069 26.68 1470.77 1020.809 3.45 3.44 7.622 2.80851 4.30460 26.70 1470.80 1020.832 3.75 3.75 7.621 2.81048 4.30782 26.73 1470.83 1020.850 4.05 4.04 7.620 2.81221 4.31056 26.74 1470.85 1020.866 4.35 4.34 7.620 2.81322 4.31216 26.75 1470.87 1020.876 4.65 4.64 7.618 2.81370 4.31315 26.76 1470.87 1020.883 4.95 4.94 7.615 2.81400 4.31401 26.77 1470.87 1020.889 5.25 5.24 7.613 2.81462 4.31523 26.77 1470.88 1020.897 5.55 5.54 7.612 2.81475 4.31553 26.78 1470.89 1020.900 5.85 5.84 7.612 2.81485 4.31568 26.78 1470.89 1020.902 6.15 6.14 7.612 2.81536 4.31649 26.78 1470.90 1020.907 6.45 6.44 7.612 2.81544 4.31652 26.78 1470.91 1020.909 6.75 6.74 7.613 2.81586 4.31711 26.79 1470.92 1020.913 7.05 7.04 7.613 2.81611 4.31744 26.79 1470.93 1020.916 7.35 7.34 7.612 2.81638 4.31795 26.79 1470.94 1020.920 7.65 7.64 7.612 2.81705 4.31904 26.80 1470.95 1020.927 7.95 7.94 7.611 2.81742 4.31971 26.80 1470.96 1020.932 8.25 8.24 7.610 2.81744 4.31987 26.80 1470.96 1020.935 8.55 8.54 7.609 2.81829 4.32130 26.81 1470.97 1020.944 8.85 8.84 7.608 2.81851 4.32180 26.82 1470.97 1020.948 9.15 9.14 7.609 2.81926 4.32284 26.82 1470.99 1020.954 9.45 9.44 7.608 2.81973 4.32367 26.83 1471.00 1020.960 9.75 9.74 7.609 2.81983 4.32373 26.83 1471.01 1020.962 10.05 10.04 7.608 2.82045 4.32472 26.84 1471.02 1020.968 10.35 10.34 7.608 2.82130 4.32605 26.85 1471.04 1020.977 10.65 10.63 7.608 2.82155 4.32653 26.85 1471.04 1020.981 10.95 10.93 7.607 2.82245 4.32801 26.86 1471.06 1020.990 11.25 11.23 7.604 2.82302 4.32920 26.87 1471.06 1020.998 11.55 11.53 7.603 2.82290 4.32924 26.87 1471.06 1020.999 11.85 11.83 7.606 2.82465 4.33151 26.88 1471.10 1021.013 12.15 12.13 7.607 2.82496 4.33187 26.89 1471.11 1021.016 12.45 12.43 7.607 2.82550 4.33264 26.89 1471.12 1021.021 12.75 12.73 7.607 2.82540 4.33249 26.89 1471.12 1021.022 13.05 13.03 7.607 2.82566 4.33294 26.89 1471.13 1021.025 13.35 13.33 7.606 2.82584 4.33336 26.89 1471.13 1021.029 13.65 13.63 7.606 2.82645 4.33425 26.90 1471.15 1021.035 13.95 13.93 7.607 2.82712 4.33521 26.91 1471.16 1021.041 14.25 14.23 7.607 2.82770 4.33599 26.91 1471.18 1021.047 14.55 14.53 7.608 2.82879 4.33756 26.92 1471.20 1021.057 14.85 14.83 7.609 2.82895 4.33773 26.92 1471.21 1021.059 15.15 15.13 7.610 2.82926 4.33805 26.93 1471.22 1021.062 15.45 15.43 7.614 2.82976 4.33828 26.93 1471.24 1021.064 15.75 15.73 7.620 2.83371 4.34348 26.96 1471.32 1021.093 16.05 16.02 7.628 2.83731 4.34798 27.00 1471.39 1021.119 16.35 16.32 7.638 2.84083 4.35197 27.02 1471.47 1021.141 16.65 16.62 7.650 2.84944 4.36355 27.11 1471.62 1021.204 16.95 16.92 7.663 2.86593 4.38713 27.27 1471.88 1021.332 17.25 17.22 7.669 2.87682 4.40302 27.38 1472.04 1021.418 17.55 17.52 7.670 2.88480 4.41500 27.46 1472.16 1021.484 17.85 17.82 7.685 2.89249 4.42480 27.53 1472.30 1021.538 18.15 18.12 7.696 2.89404 4.42567 27.54 1472.36 1021.544 18.45 18.42 7.701 2.89338 4.42395 27.53 1472.37 1021.536 18.75 18.72 7.705 2.89686 4.42883 27.56 1472.43 1021.563 19.05 19.02 7.710 2.89871 4.43096 27.57 1472.47 1021.576 19.26 19.23 7.728 2.89991 4.43029 27.57 1472.55 1021.573