*2019/08/26 15:30:32.60 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 00:28:12.000 END TIME : UTC 2017/03/03 00:28:26.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 74 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 22.04 2 Depth metres 0.15 22 3 Temperature 'deg C (ITS90)' 7.448 7.597 4 Conductivity S/m 2.78573 2.85836 5 Conductance:Specific S/m 4.29258 4.3849 6 Salinity PSS-78 26.6 27.24 7 Speed:Sound m/s 1469.95 1471.66 8 Density kg/m^3 1020.759 1021.341 $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 : 317 LATITUDE : 49 17.52548 N ! (deg min) LONGITUDE : 123 3.58165 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 21:09:14 74 74 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 74 74 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:09:14 -HEADER EDITS: 2017/12/13 11:33:18 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 15:30:32 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_20170303_002812 % Cast time (UTC),2017-03-03 00:28:12 % Cast time (local),2017-03-03 00:28:12 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2920914 % Start longitude,-123.0596941 % Start altitude,-17.040000915527344 % Start GPS horizontal error(Meter),7.5999999046325684 % Start GPS vertical error(Meter),8.6999998092651367 % Start GPS number of satellites,5 % End latitude,49.2920431 % End longitude,-123.0593151 % End altitude,-22.780000686645508 % End GPS horizontal error(Meter),10.789999961853027 % End GPS vertical error(Meter),12.220000267028809 % End GPS number of satellites,5 % Cast duration (Seconds),60.4 % 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 7.448 2.78682 4.29425 26.61 1469.95 1020.765 0.45 0.45 7.448 2.78708 4.29471 26.61 1469.96 1020.769 0.75 0.75 7.448 2.78573 4.29260 26.60 1469.95 1020.759 1.05 1.05 7.448 2.78605 4.29303 26.60 1469.96 1020.763 1.35 1.35 7.450 2.78630 4.29323 26.60 1469.97 1020.765 1.65 1.65 7.452 2.78607 4.29258 26.60 1469.98 1020.763 1.95 1.95 7.453 2.78773 4.29496 26.62 1470.01 1020.777 2.25 2.25 7.453 2.78716 4.29412 26.61 1470.01 1020.774 2.55 2.55 7.455 2.78827 4.29564 26.62 1470.03 1020.783 2.85 2.85 7.455 2.79039 4.29885 26.64 1470.06 1020.801 3.15 3.15 7.455 2.78944 4.29741 26.63 1470.05 1020.795 3.45 3.44 7.455 2.78829 4.29562 26.62 1470.04 1020.787 3.75 3.75 7.456 2.78853 4.29591 26.62 1470.05 1020.790 4.05 4.04 7.455 2.78887 4.29653 26.63 1470.06 1020.794 4.35 4.34 7.456 2.78903 4.29670 26.63 1470.07 1020.796 4.65 4.64 7.457 2.78902 4.29651 26.63 1470.08 1020.797 4.95 4.94 7.457 2.78864 4.29592 26.62 1470.08 1020.795 5.25 5.24 7.458 2.78871 4.29591 26.62 1470.09 1020.796 5.55 5.54 7.461 2.78906 4.29602 26.62 1470.11 1020.798 5.85 5.84 7.466 2.79037 4.29732 26.63 1470.14 1020.806 6.15 6.14 7.472 2.79082 4.29730 26.63 1470.17 1020.807 6.45 6.44 7.479 2.79354 4.30057 26.66 1470.23 1020.826 6.75 6.74 7.484 2.79809 4.30689 26.70 1470.31 1020.861 7.05 7.04 7.487 2.80575 4.31823 26.78 1470.42 1020.923 7.35 7.34 7.498 2.81076 4.32458 26.82 1470.52 1020.958 7.65 7.64 7.510 2.81617 4.33122 26.87 1470.64 1020.995 7.95 7.94 7.517 2.82170 4.33879 26.92 1470.73 1021.036 8.25 8.24 7.520 2.82593 4.34495 26.96 1470.80 1021.071 8.55 8.54 7.525 2.82842 4.34807 26.99 1470.85 1021.089 8.85 8.84 7.529 2.82861 4.34785 26.98 1470.87 1021.089 9.15 9.14 7.533 2.82860 4.34733 26.98 1470.89 1021.087 9.45 9.44 7.534 2.83142 4.35148 27.01 1470.93 1021.111 9.75 9.74 7.534 2.83219 4.35268 27.02 1470.95 1021.118 10.05 10.04 7.534 2.83225 4.35272 27.02 1470.95 1021.120 10.35 10.34 7.534 2.83295 4.35384 27.03 1470.97 1021.127 10.65 10.63 7.533 2.83264 4.35348 27.02 1470.97 1021.127 10.95 10.93 7.533 2.83311 4.35416 27.03 1470.98 1021.132 11.25 11.23 7.533 2.83347 4.35474 27.03 1470.99 1021.136 11.55 11.53 7.535 2.83462 4.35628 27.04 1471.01 1021.145 11.85 11.83 7.535 2.83467 4.35633 27.04 1471.02 1021.147 12.15 12.13 7.535 2.83483 4.35658 27.04 1471.02 1021.150 12.45 12.43 7.535 2.83417 4.35552 27.04 1471.02 1021.145 12.75 12.73 7.536 2.83563 4.35772 27.05 1471.05 1021.158 13.05 13.03 7.536 2.83571 4.35780 27.05 1471.05 1021.160 13.35 13.33 7.536 2.83695 4.35975 27.07 1471.07 1021.172 13.65 13.63 7.535 2.83759 4.36085 27.07 1471.08 1021.179 13.95 13.93 7.535 2.83760 4.36079 27.07 1471.09 1021.180 14.25 14.23 7.536 2.83930 4.36333 27.09 1471.12 1021.195 14.55 14.53 7.537 2.83887 4.36256 27.08 1471.12 1021.192 14.85 14.83 7.539 2.83999 4.36403 27.09 1471.14 1021.201 15.15 15.13 7.542 2.84027 4.36402 27.09 1471.16 1021.202 15.45 15.43 7.544 2.84008 4.36342 27.09 1471.17 1021.200 15.75 15.72 7.548 2.84021 4.36318 27.09 1471.19 1021.200 16.05 16.02 7.550 2.84081 4.36376 27.09 1471.21 1021.205 16.35 16.32 7.552 2.84112 4.36402 27.10 1471.22 1021.207 16.65 16.62 7.553 2.84185 4.36502 27.10 1471.24 1021.214 16.95 16.92 7.553 2.84154 4.36443 27.10 1471.24 1021.212 17.25 17.22 7.557 2.84398 4.36767 27.12 1471.29 1021.231 17.55 17.52 7.561 2.84612 4.37050 27.14 1471.33 1021.247 17.85 17.82 7.561 2.84652 4.37102 27.14 1471.34 1021.251 18.15 18.12 7.565 2.84903 4.37435 27.17 1471.39 1021.270 18.45 18.42 7.569 2.84915 4.37405 27.17 1471.41 1021.270 18.75 18.72 7.572 2.84777 4.37145 27.15 1471.41 1021.257 19.05 19.02 7.576 2.85292 4.37891 27.20 1471.49 1021.299 19.35 19.32 7.579 2.85401 4.38015 27.21 1471.52 1021.306 19.65 19.62 7.581 2.85479 4.38111 27.21 1471.54 1021.313 19.95 19.92 7.580 2.85497 4.38143 27.22 1471.54 1021.316 20.25 20.22 7.585 2.85537 4.38147 27.22 1471.57 1021.317 20.55 20.52 7.587 2.85650 4.38283 27.23 1471.59 1021.326 20.85 20.82 7.590 2.85790 4.38460 27.24 1471.62 1021.337 21.15 21.11 7.591 2.85740 4.38379 27.23 1471.62 1021.334 21.45 21.41 7.593 2.85836 4.38490 27.24 1471.65 1021.341 21.75 21.71 7.594 2.85810 4.38433 27.24 1471.65 1021.339 22.04 22.00 7.597 2.85783 4.38354 27.23 1471.66 1021.336