*2019/08/26 15:30:31.25 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 02:31:48.000 END TIME : UTC 2017/03/02 02:32:04.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 82 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.37 2 Depth metres 0.15 24.32 3 Temperature 'deg C (ITS90)' 7.336 8.009 4 Conductivity S/m 2.75674 3.00665 5 Conductance:Specific S/m 4.25958 4.55434 6 Salinity PSS-78 26.36 28.46 7 Speed:Sound m/s 1469.25 1474.82 8 Density kg/m^3 1020.584 1022.257 $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 : 297 LATITUDE : 49 18.23579 N ! (deg min) LONGITUDE : 123 6.50715 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 20:49:44 82 82 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:31 82 82 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:49:43 -HEADER EDITS: 2017/12/13 11:33:17 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 15:30:31 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_023148_mid % Cast time (UTC),2017-03-02 02:31:48 % Cast time (local),2017-03-02 02:31:48 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3039298 % Start longitude,-123.1084525 % Start altitude,-15.229999542236328 % Start GPS horizontal error(Meter),3.6400001049041748 % Start GPS vertical error(Meter),4.8499999046325684 % Start GPS number of satellites,6 % End latitude,49.3036601 % End longitude,-123.1084895 % End altitude,-7.119999885559082 % End GPS horizontal error(Meter),16.280000686645508 % End GPS vertical error(Meter),20.350000381469727 % End GPS number of satellites,6 % Cast duration (Seconds),74.4 % 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 7.336 2.75844 4.26533 26.40 1469.25 1020.612 0.45 0.45 7.343 2.75854 4.26449 26.39 1469.28 1020.609 0.75 0.75 7.359 2.75674 4.25958 26.36 1469.30 1020.584 1.05 1.05 7.379 2.75972 4.26159 26.38 1469.41 1020.595 1.35 1.35 7.391 2.76407 4.26679 26.41 1469.50 1020.624 1.65 1.65 7.390 2.76677 4.27096 26.44 1469.54 1020.648 1.95 1.95 7.390 2.76767 4.27247 26.45 1469.56 1020.657 2.25 2.25 7.390 2.76884 4.27424 26.47 1469.58 1020.668 2.55 2.55 7.393 2.76916 4.27434 26.47 1469.60 1020.670 2.85 2.85 7.399 2.77079 4.27602 26.48 1469.64 1020.680 3.15 3.15 7.414 2.77601 4.28213 26.52 1469.76 1020.714 3.45 3.45 7.434 2.77811 4.28269 26.53 1469.85 1020.718 3.75 3.75 7.446 2.78256 4.28792 26.57 1469.95 1020.747 4.05 4.04 7.457 2.78849 4.29571 26.62 1470.06 1020.790 4.35 4.34 7.469 2.79336 4.30157 26.66 1470.17 1020.822 4.65 4.64 7.480 2.79429 4.30161 26.66 1470.21 1020.824 4.95 4.94 7.483 2.79418 4.30098 26.66 1470.23 1020.821 5.25 5.24 7.479 2.79485 4.30252 26.67 1470.23 1020.831 5.55 5.54 7.470 2.79486 4.30372 26.68 1470.21 1020.839 5.85 5.84 7.464 2.79378 4.30289 26.67 1470.18 1020.836 6.15 6.14 7.460 2.79286 4.30198 26.66 1470.16 1020.832 6.45 6.44 7.462 2.79264 4.30135 26.66 1470.17 1020.830 6.75 6.74 7.466 2.79260 4.30086 26.66 1470.18 1020.829 7.05 7.04 7.469 2.79312 4.30119 26.66 1470.21 1020.832 7.35 7.34 7.474 2.79558 4.30437 26.68 1470.26 1020.850 7.65 7.64 7.481 2.79736 4.30617 26.69 1470.31 1020.861 7.95 7.94 7.487 2.80017 4.30962 26.72 1470.37 1020.881 8.25 8.24 7.498 2.80493 4.31559 26.76 1470.46 1020.914 8.55 8.54 7.508 2.80691 4.31721 26.77 1470.53 1020.924 8.85 8.84 7.518 2.80931 4.31957 26.79 1470.59 1020.937 9.15 9.14 7.525 2.81112 4.32141 26.80 1470.64 1020.948 9.45 9.44 7.528 2.81294 4.32393 26.82 1470.67 1020.963 9.75 9.74 7.528 2.81760 4.33100 26.87 1470.74 1021.002 10.05 10.04 7.529 2.81970 4.33407 26.89 1470.78 1021.020 10.35 10.34 7.529 2.82128 4.33654 26.91 1470.80 1021.034 10.65 10.63 7.530 2.82217 4.33781 26.92 1470.82 1021.043 10.95 10.94 7.530 2.82186 4.33734 26.91 1470.82 1021.041 11.25 11.23 7.529 2.82170 4.33719 26.91 1470.82 1021.042 11.55 11.53 7.530 2.82183 4.33733 26.91 1470.83 1021.044 11.85 11.83 7.531 2.82261 4.33827 26.92 1470.85 1021.050 12.15 12.13 7.533 2.82260 4.33807 26.92 1470.86 1021.050 12.45 12.43 7.534 2.82233 4.33748 26.91 1470.86 1021.049 12.75 12.73 7.537 2.82295 4.33812 26.92 1470.88 1021.053 13.05 13.03 7.541 2.82809 4.34539 26.97 1470.97 1021.093 13.35 13.33 7.544 2.82785 4.34465 26.96 1470.98 1021.091 13.65 13.63 7.545 2.82950 4.34703 26.98 1471.01 1021.105 13.95 13.93 7.550 2.83170 4.34976 27.00 1471.06 1021.121 14.25 14.23 7.551 2.83230 4.35051 27.00 1471.07 1021.126 14.55 14.53 7.552 2.83300 4.35155 27.01 1471.09 1021.133 14.85 14.83 7.551 2.83222 4.35042 27.00 1471.08 1021.128 15.15 15.13 7.556 2.83320 4.35124 27.01 1471.11 1021.134 15.45 15.43 7.565 2.83504 4.35288 27.02 1471.17 1021.144 15.75 15.73 7.566 2.83789 4.35712 27.05 1471.21 1021.168 16.05 16.03 7.568 2.83864 4.35806 27.06 1471.23 1021.174 16.35 16.32 7.569 2.83719 4.35569 27.04 1471.22 1021.162 16.65 16.62 7.569 2.83720 4.35571 27.04 1471.22 1021.164 16.95 16.92 7.569 2.83776 4.35651 27.05 1471.24 1021.169 17.25 17.22 7.569 2.83693 4.35520 27.04 1471.23 1021.164 17.55 17.52 7.570 2.83651 4.35444 27.03 1471.23 1021.161 17.85 17.82 7.574 2.83801 4.35625 27.05 1471.27 1021.172 18.15 18.12 7.578 2.83873 4.35680 27.05 1471.30 1021.176 18.45 18.42 7.580 2.83613 4.35263 27.02 1471.27 1021.155 18.75 18.72 7.580 2.84017 4.35869 27.06 1471.33 1021.189 19.05 19.02 7.583 2.83897 4.35649 27.05 1471.33 1021.178 19.35 19.32 7.585 2.84086 4.35914 27.07 1471.36 1021.194 19.65 19.62 7.588 2.84126 4.35934 27.07 1471.38 1021.196 19.95 19.92 7.598 2.84504 4.36386 27.10 1471.46 1021.221 20.25 20.22 7.612 2.84956 4.36883 27.14 1471.57 1021.249 20.55 20.52 7.630 2.85051 4.36792 27.13 1471.64 1021.245 20.85 20.82 7.654 2.85101 4.36553 27.12 1471.72 1021.233 21.15 21.12 7.686 2.85929 4.37388 27.18 1471.93 1021.278 21.45 21.42 7.731 2.88238 4.40316 27.39 1472.36 1021.436 21.75 21.72 7.739 2.89474 4.42101 27.51 1472.55 1021.533 22.05 22.02 7.707 2.88085 4.40398 27.39 1472.28 1021.444 22.35 22.31 7.690 2.91730 4.46204 27.78 1472.71 1021.758 22.65 22.61 7.779 2.95842 4.51265 28.14 1473.51 1022.030 22.95 22.91 7.873 2.99129 4.54972 28.41 1474.21 1022.229 23.25 23.21 7.935 2.99734 4.55033 28.43 1474.47 1022.232 23.55 23.51 7.979 3.00107 4.54999 28.43 1474.65 1022.231 23.85 23.81 7.997 3.00412 4.55208 28.45 1474.74 1022.243 24.15 24.11 8.006 3.00548 4.55288 28.45 1474.79 1022.248 24.37 24.32 8.009 3.00665 4.55434 28.46 1474.82 1022.257