*2019/08/26 15:30:06.72 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/03/11 18:16:13.000 END TIME : UTC 2016/03/11 18:16:23.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 51 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 15.03 2 Depth metres 0.15 15.05 3 Temperature 'deg C (ITS90)' 6.555 8.66 4 Conductivity S/m 0.2447 3.04514 5 Conductance:Specific S/m 0.38721 4.52438 6 Salinity PSS-78 1.99 28.34 7 Speed:Sound m/s 1435.58 1477 8 Density kg/m^3 1001.505 1022.033 $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 : 2016-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 194 LATITUDE : 49 7.52311 N ! (deg min) LONGITUDE : 123 12.32230 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 19:17:48 51 51 HDREDIT2 3.1.1 2017/12/13 11:31:11 ? ? CALIB 12.0 2019/08/26 15:30:06 51 51 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 19:17:48 -HEADER EDITS: 2017/12/13 11:31:11 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 15:30:06 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_20160311_181613 % Cast time (UTC),2016-03-11 18:16:13 % Cast time (local),2016-03-11 18:16:13 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1253852 % Start longitude,-123.2053717 % Start altitude,-14.789999961853027 % Start GPS horizontal error(Meter),2.4900000095367432 % Start GPS vertical error(Meter),3.7699999809265137 % Start GPS number of satellites,5 % End latitude,49.1256977 % End longitude,-123.205373 % End altitude,-16.1200008392334 % End GPS horizontal error(Meter),4.869999885559082 % End GPS vertical error(Meter),7.5100002288818359 % End GPS number of satellites,5 % Cast duration (Seconds),66.6 % 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 6.555 0.24521 0.38854 2.00 1435.58 1001.511 0.45 0.46 6.598 0.24470 0.38721 1.99 1435.76 1001.505 0.75 0.76 6.678 0.26953 0.42543 2.20 1436.37 1001.669 1.05 1.07 6.767 0.35004 0.55094 2.90 1437.64 1002.215 1.35 1.37 6.817 0.59206 0.93041 5.06 1440.60 1003.923 1.65 1.68 7.012 0.79977 1.24918 6.95 1443.79 1005.396 1.95 1.98 7.168 1.26544 1.96694 11.34 1449.92 1008.836 2.25 2.28 7.246 1.51217 2.34472 13.73 1453.21 1010.699 2.55 2.59 7.357 1.76805 2.73206 16.22 1456.75 1012.640 2.85 2.89 7.473 2.04487 3.14855 18.94 1460.59 1014.762 3.15 3.19 7.652 2.31429 3.54392 21.57 1464.57 1016.806 3.45 3.49 7.743 2.38191 3.63730 22.21 1465.71 1017.293 3.75 3.79 7.837 2.44190 3.71816 22.76 1466.77 1017.715 4.05 4.09 7.914 2.50808 3.81008 23.38 1467.85 1018.198 4.35 4.39 7.993 2.55626 3.87391 23.82 1468.70 1018.533 4.65 4.69 8.053 2.59112 3.91966 24.14 1469.33 1018.775 4.95 4.99 8.105 2.60542 3.93510 24.25 1469.67 1018.856 5.25 5.29 8.179 2.67175 4.02627 24.88 1470.74 1019.338 5.55 5.59 8.218 2.71918 4.09292 25.34 1471.46 1019.693 5.85 5.89 8.253 2.74580 4.12866 25.58 1471.90 1019.883 6.15 6.19 8.280 2.77484 4.16896 25.86 1472.35 1020.099 6.45 6.49 8.310 2.80101 4.20451 26.11 1472.78 1020.289 6.75 6.79 8.366 2.82931 4.23985 26.36 1473.30 1020.477 7.05 7.09 8.396 2.85540 4.27500 26.60 1473.72 1020.666 7.35 7.39 8.414 2.87293 4.29899 26.77 1474.00 1020.795 7.65 7.69 8.426 2.87675 4.30318 26.80 1474.09 1020.818 7.95 7.99 8.442 2.88075 4.30706 26.82 1474.19 1020.840 8.25 8.29 8.453 2.89144 4.32162 26.93 1474.36 1020.919 8.55 8.59 8.468 2.90450 4.33926 27.05 1474.57 1021.014 8.85 8.89 8.486 2.91085 4.34633 27.10 1474.71 1021.053 9.15 9.19 8.494 2.92268 4.36293 27.21 1474.89 1021.143 9.45 9.49 8.506 2.93027 4.37277 27.28 1475.02 1021.197 9.75 9.79 8.520 2.94010 4.38561 27.37 1475.19 1021.267 10.05 10.09 8.535 2.94963 4.39789 27.46 1475.36 1021.334 10.35 10.38 8.546 2.97117 4.42855 27.67 1475.67 1021.500 10.65 10.69 8.553 2.98377 4.44636 27.80 1475.85 1021.597 10.95 10.98 8.564 2.98900 4.45264 27.84 1475.95 1021.632 11.25 11.28 8.581 2.99859 4.46478 27.93 1476.13 1021.698 11.55 11.58 8.597 3.01322 4.48430 28.06 1476.36 1021.804 11.85 11.88 8.609 3.02104 4.49439 28.14 1476.50 1021.859 12.15 12.18 8.625 3.02972 4.50515 28.21 1476.66 1021.918 12.45 12.48 8.631 3.03484 4.51195 28.26 1476.75 1021.956 12.75 12.78 8.638 3.03945 4.51793 28.30 1476.83 1021.989 13.05 13.08 8.640 3.04086 4.51967 28.31 1476.86 1022.000 13.35 13.38 8.637 3.04150 4.52108 28.32 1476.86 1022.009 13.65 13.68 8.629 3.04206 4.52297 28.34 1476.85 1022.021 13.95 13.98 8.625 3.04238 4.52395 28.34 1476.85 1022.028 14.25 14.28 8.628 3.04222 4.52332 28.34 1476.86 1022.025 14.55 14.57 8.631 3.04284 4.52388 28.34 1476.88 1022.030 14.85 14.87 8.634 3.04343 4.52438 28.34 1476.90 1022.033 15.03 15.05 8.660 3.04514 4.52334 28.34 1477.00 1022.027