*2019/08/26 15:30:32.81 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 00:35:51.000 END TIME : UTC 2017/03/03 00:36:03.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 61 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.23 2 Depth metres 0.15 18.21 3 Temperature 'deg C (ITS90)' 7.441 7.619 4 Conductivity S/m 2.75465 2.87031 5 Conductance:Specific S/m 4.24541 4.4009 6 Salinity PSS-78 26.28 27.36 7 Speed:Sound m/s 1469.51 1471.83 8 Density kg/m^3 1020.505 1021.411 $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 : 321 LATITUDE : 49 18.03475 N ! (deg min) LONGITUDE : 123 3.66724 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 21:13:10 61 61 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 61 61 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:13:10 -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_003551 % Cast time (UTC),2017-03-03 00:35:51 % Cast time (local),2017-03-03 00:35:51 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3005791 % Start longitude,-123.0611206 % Start altitude,-7.190000057220459 % Start GPS horizontal error(Meter),12.649999618530273 % Start GPS vertical error(Meter),14.140000343322754 % Start GPS number of satellites,5 % End latitude,49.3005956 % End longitude,-123.061306 % End altitude,-15.789999961853027 % End GPS horizontal error(Meter),13.279999732971191 % End GPS vertical error(Meter),14.779999732971191 % End GPS number of satellites,5 % Cast duration (Seconds),57.4 % 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 7.441 2.75471 4.24573 26.28 1469.51 1020.506 0.45 0.45 7.443 2.75465 4.24541 26.28 1469.52 1020.505 0.75 0.75 7.443 2.75574 4.24711 26.29 1469.54 1020.516 1.05 1.05 7.444 2.75641 4.24796 26.29 1469.56 1020.522 1.35 1.35 7.444 2.75591 4.24712 26.29 1469.56 1020.518 1.65 1.65 7.445 2.75681 4.24846 26.30 1469.58 1020.527 1.95 1.95 7.446 2.75712 4.24882 26.30 1469.59 1020.530 2.25 2.25 7.446 2.75689 4.24842 26.30 1469.59 1020.529 2.55 2.55 7.446 2.75750 4.24932 26.30 1469.60 1020.535 2.85 2.85 7.446 2.75776 4.24972 26.31 1469.61 1020.539 3.15 3.15 7.446 2.75777 4.24977 26.31 1469.62 1020.540 3.45 3.45 7.446 2.75755 4.24941 26.30 1469.62 1020.540 3.75 3.75 7.447 2.75758 4.24942 26.30 1469.62 1020.541 4.05 4.04 7.446 2.75805 4.25020 26.31 1469.63 1020.546 4.35 4.34 7.447 2.75786 4.24980 26.31 1469.64 1020.546 4.65 4.64 7.448 2.75867 4.25092 26.31 1469.66 1020.553 4.95 4.94 7.448 2.75860 4.25083 26.31 1469.66 1020.554 5.25 5.24 7.448 2.75911 4.25159 26.32 1469.67 1020.559 5.55 5.54 7.448 2.75973 4.25250 26.32 1469.68 1020.565 5.85 5.84 7.449 2.76071 4.25387 26.33 1469.70 1020.574 6.15 6.14 7.449 2.76107 4.25444 26.34 1469.71 1020.578 6.45 6.44 7.449 2.76132 4.25488 26.34 1469.72 1020.582 6.75 6.74 7.448 2.76109 4.25462 26.34 1469.72 1020.582 7.05 7.04 7.448 2.76146 4.25516 26.34 1469.73 1020.586 7.35 7.34 7.448 2.76016 4.25323 26.33 1469.72 1020.577 7.65 7.64 7.448 2.75950 4.25213 26.32 1469.71 1020.572 7.95 7.94 7.449 2.75994 4.25277 26.32 1469.73 1020.577 8.25 8.24 7.449 2.76158 4.25525 26.34 1469.75 1020.592 8.55 8.54 7.450 2.76240 4.25642 26.35 1469.77 1020.599 8.85 8.84 7.450 2.76195 4.25571 26.34 1469.77 1020.597 9.15 9.14 7.451 2.76145 4.25485 26.34 1469.77 1020.593 9.45 9.44 7.450 2.76228 4.25624 26.35 1469.78 1020.602 9.75 9.74 7.452 2.76406 4.25868 26.36 1469.82 1020.616 10.05 10.04 7.452 2.76643 4.26233 26.39 1469.85 1020.637 10.35 10.34 7.453 2.76737 4.26363 26.40 1469.88 1020.646 10.65 10.64 7.454 2.76830 4.26499 26.41 1469.89 1020.654 10.95 10.94 7.455 2.76919 4.26618 26.42 1469.91 1020.662 11.25 11.24 7.456 2.76929 4.26625 26.42 1469.92 1020.663 11.55 11.54 7.458 2.76920 4.26585 26.41 1469.93 1020.662 11.85 11.84 7.459 2.76912 4.26554 26.41 1469.94 1020.662 12.15 12.14 7.461 2.76981 4.26640 26.42 1469.96 1020.668 12.45 12.44 7.462 2.77223 4.26998 26.44 1470.00 1020.688 12.75 12.73 7.466 2.77290 4.27047 26.45 1470.02 1020.692 13.05 13.03 7.474 2.77599 4.27412 26.47 1470.09 1020.713 13.35 13.33 7.486 2.77974 4.27835 26.50 1470.18 1020.737 13.65 13.63 7.496 2.78812 4.28994 26.58 1470.33 1020.800 13.95 13.93 7.503 2.79785 4.30402 26.68 1470.48 1020.876 14.25 14.23 7.513 2.80623 4.31561 26.76 1470.62 1020.940 14.55 14.53 7.520 2.81131 4.32249 26.81 1470.71 1020.978 14.85 14.83 7.526 2.81486 4.32705 26.84 1470.78 1021.003 15.15 15.13 7.534 2.81877 4.33204 26.88 1470.86 1021.031 15.45 15.43 7.542 2.82196 4.33591 26.90 1470.93 1021.053 15.75 15.73 7.551 2.82605 4.34091 26.94 1471.02 1021.081 16.05 16.03 7.559 2.83300 4.35060 27.00 1471.13 1021.134 16.35 16.33 7.558 2.83702 4.35682 27.05 1471.19 1021.169 16.65 16.63 7.552 2.84245 4.36595 27.11 1471.25 1021.219 16.95 16.93 7.558 2.84879 4.37491 27.17 1471.35 1021.268 17.25 17.23 7.570 2.85737 4.38655 27.25 1471.50 1021.332 17.55 17.53 7.587 2.86783 4.40032 27.35 1471.69 1021.407 17.85 17.83 7.607 2.86998 4.40090 27.36 1471.78 1021.411 18.23 18.21 7.619 2.87031 4.39978 27.35 1471.83 1021.406