*2019/08/26 15:30:32.13 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 18:28:18.000 END TIME : UTC 2017/03/02 18:28:36.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 91 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 27.15 2 Depth metres 0.15 27.11 3 Temperature 'deg C (ITS90)' 7.352 7.565 4 Conductivity S/m 2.76305 2.83138 5 Conductance:Specific S/m 4.26992 4.34731 6 Salinity PSS-78 26.43 26.98 7 Speed:Sound m/s 1469.38 1471.3 8 Density kg/m^3 1020.64 1021.164 $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 : 309 LATITUDE : 49 17.69250 N ! (deg min) LONGITUDE : 123 3.61066 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 21:01:27 91 91 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:32 91 91 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:01:27 -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_20170302_182818 % Cast time (UTC),2017-03-02 18:28:18 % Cast time (local),2017-03-02 18:28:18 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.294875 % Start longitude,-123.0601776 % Start altitude,-18.260000228881836 % Start GPS horizontal error(Meter),3.0399999618530273 % Start GPS vertical error(Meter),4.7100000381469727 % Start GPS number of satellites,6 % End latitude,49.2947183 % End longitude,-123.0604017 % End altitude,4.6700000762939453 % End GPS horizontal error(Meter),12.770000457763672 % End GPS vertical error(Meter),23.909999847412109 % End GPS number of satellites,5 % Cast duration (Seconds),69 % 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 7.358 2.76379 4.27059 26.44 1469.38 1020.640 0.45 0.45 7.358 2.76365 4.27042 26.44 1469.39 1020.640 0.75 0.75 7.358 2.76368 4.27053 26.44 1469.39 1020.642 1.05 1.05 7.357 2.76322 4.26992 26.43 1469.39 1020.640 1.35 1.35 7.355 2.76359 4.27067 26.44 1469.39 1020.646 1.65 1.65 7.354 2.76334 4.27051 26.44 1469.39 1020.646 1.95 1.95 7.353 2.76326 4.27048 26.43 1469.39 1020.647 2.25 2.25 7.352 2.76358 4.27108 26.44 1469.40 1020.652 2.55 2.55 7.352 2.76374 4.27131 26.44 1469.40 1020.654 2.85 2.85 7.352 2.76406 4.27180 26.44 1469.41 1020.658 3.15 3.15 7.352 2.76382 4.27148 26.44 1469.41 1020.658 3.45 3.45 7.352 2.76305 4.27026 26.43 1469.41 1020.653 3.75 3.75 7.354 2.76330 4.27041 26.43 1469.42 1020.655 4.05 4.04 7.354 2.76379 4.27119 26.44 1469.43 1020.660 4.35 4.34 7.354 2.76370 4.27101 26.44 1469.44 1020.661 4.65 4.64 7.354 2.76392 4.27132 26.44 1469.44 1020.663 4.95 4.94 7.356 2.76460 4.27219 26.45 1469.46 1020.669 5.25 5.24 7.356 2.76490 4.27257 26.45 1469.47 1020.673 5.55 5.54 7.360 2.76514 4.27250 26.45 1469.49 1020.674 5.85 5.84 7.363 2.76503 4.27196 26.45 1469.50 1020.672 6.15 6.14 7.366 2.76701 4.27462 26.46 1469.54 1020.687 6.45 6.44 7.368 2.76707 4.27434 26.46 1469.56 1020.687 6.75 6.74 7.375 2.76899 4.27650 26.48 1469.61 1020.700 7.05 7.04 7.384 2.76931 4.27578 26.47 1469.64 1020.697 7.35 7.34 7.388 2.77240 4.27994 26.50 1469.70 1020.721 7.65 7.64 7.391 2.77291 4.28044 26.51 1469.72 1020.725 7.95 7.94 7.394 2.77296 4.28007 26.50 1469.73 1020.724 8.25 8.24 7.397 2.77438 4.28182 26.52 1469.77 1020.735 8.55 8.54 7.402 2.77472 4.28175 26.52 1469.79 1020.735 8.85 8.84 7.403 2.77542 4.28263 26.52 1469.81 1020.741 9.15 9.14 7.406 2.77557 4.28254 26.52 1469.82 1020.742 9.45 9.44 7.407 2.77582 4.28271 26.52 1469.83 1020.744 9.75 9.74 7.409 2.77600 4.28281 26.52 1469.85 1020.746 10.05 10.04 7.409 2.77575 4.28236 26.52 1469.85 1020.745 10.35 10.34 7.409 2.77610 4.28290 26.52 1469.86 1020.749 10.65 10.64 7.411 2.77619 4.28284 26.52 1469.87 1020.750 10.95 10.94 7.412 2.77575 4.28195 26.52 1469.87 1020.747 11.25 11.23 7.415 2.77659 4.28290 26.52 1469.89 1020.753 11.55 11.54 7.417 2.77668 4.28281 26.52 1469.91 1020.754 11.85 11.84 7.422 2.77677 4.28226 26.52 1469.93 1020.752 12.15 12.13 7.428 2.77977 4.28606 26.55 1469.99 1020.774 12.45 12.43 7.434 2.78280 4.28990 26.57 1470.05 1020.795 12.75 12.73 7.440 2.78464 4.29198 26.59 1470.10 1020.808 13.05 13.03 7.446 2.78624 4.29361 26.60 1470.14 1020.818 13.35 13.33 7.453 2.78821 4.29576 26.62 1470.19 1020.830 13.65 13.63 7.461 2.79276 4.30176 26.66 1470.28 1020.864 13.95 13.93 7.470 2.79431 4.30294 26.67 1470.33 1020.871 14.25 14.23 7.474 2.79699 4.30654 26.69 1470.38 1020.892 14.55 14.53 7.478 2.79739 4.30659 26.69 1470.41 1020.893 14.85 14.83 7.481 2.79675 4.30524 26.68 1470.41 1020.887 15.15 15.13 7.486 2.79699 4.30497 26.68 1470.43 1020.887 15.45 15.43 7.492 2.79832 4.30620 26.69 1470.47 1020.895 15.75 15.73 7.497 2.80169 4.31067 26.72 1470.54 1020.920 16.05 16.03 7.499 2.80321 4.31283 26.74 1470.57 1020.933 16.35 16.33 7.502 2.80490 4.31496 26.75 1470.60 1020.945 16.65 16.63 7.506 2.80802 4.31925 26.78 1470.66 1020.970 16.95 16.93 7.508 2.81177 4.32470 26.82 1470.72 1021.000 17.25 17.23 7.513 2.81258 4.32528 26.82 1470.75 1021.004 17.55 17.53 7.519 2.81331 4.32564 26.83 1470.78 1021.007 17.85 17.83 7.525 2.81552 4.32827 26.85 1470.83 1021.023 18.15 18.12 7.530 2.81630 4.32881 26.85 1470.86 1021.027 18.45 18.43 7.533 2.81703 4.32953 26.86 1470.88 1021.032 18.75 18.72 7.535 2.81830 4.33115 26.87 1470.91 1021.042 19.05 19.02 7.537 2.81868 4.33152 26.87 1470.93 1021.045 19.35 19.32 7.538 2.81925 4.33222 26.88 1470.94 1021.050 19.65 19.62 7.539 2.82053 4.33403 26.89 1470.97 1021.061 19.95 19.92 7.542 2.81962 4.33227 26.88 1470.97 1021.053 20.25 20.22 7.544 2.82125 4.33446 26.89 1471.00 1021.066 20.55 20.52 7.545 2.82186 4.33528 26.90 1471.02 1021.072 20.85 20.82 7.547 2.82099 4.33378 26.89 1471.02 1021.065 21.15 21.12 7.548 2.82244 4.33587 26.90 1471.04 1021.077 21.45 21.42 7.549 2.82260 4.33589 26.90 1471.05 1021.079 21.75 21.72 7.550 2.82357 4.33721 26.91 1471.08 1021.087 22.05 22.02 7.551 2.82328 4.33676 26.91 1471.08 1021.086 22.35 22.32 7.551 2.82460 4.33872 26.92 1471.10 1021.098 22.65 22.62 7.552 2.82558 4.34009 26.93 1471.12 1021.106 22.95 22.92 7.553 2.82475 4.33864 26.92 1471.12 1021.100 23.25 23.22 7.554 2.82500 4.33891 26.92 1471.13 1021.102 23.55 23.52 7.555 2.82540 4.33948 26.93 1471.14 1021.107 23.85 23.82 7.556 2.82566 4.33971 26.93 1471.15 1021.109 24.15 24.11 7.555 2.82658 4.34127 26.94 1471.16 1021.119 24.45 24.41 7.554 2.82768 4.34301 26.95 1471.18 1021.130 24.75 24.71 7.556 2.82749 4.34247 26.95 1471.19 1021.128 25.05 25.01 7.557 2.82826 4.34360 26.95 1471.21 1021.135 25.35 25.31 7.559 2.82838 4.34350 26.95 1471.22 1021.136 25.65 25.61 7.560 2.82893 4.34420 26.96 1471.23 1021.141 25.95 25.91 7.561 2.82944 4.34476 26.96 1471.25 1021.145 26.25 26.21 7.562 2.82903 4.34408 26.96 1471.25 1021.143 26.55 26.51 7.563 2.83001 4.34547 26.97 1471.27 1021.152 26.85 26.81 7.564 2.83098 4.34682 26.98 1471.29 1021.160 27.15 27.11 7.565 2.83138 4.34731 26.98 1471.30 1021.164