*2019/08/26 15:30:05.82 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/03/09 22:06:56.000 END TIME : UTC 2016/03/09 22:07:06.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 54 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.09 2 Depth metres 0.15 16.36 3 Temperature 'deg C (ITS90)' 6.156 8.061 4 Conductivity S/m 0.1283E-01 2.42352 5 Conductance:Specific S/m 0.2059E-01 3.66526 6 Salinity PSS-78 0.9E-01 22.42 7 Speed:Sound m/s 1431.4 1467.43 8 Density kg/m^3 1000.014 1017.484 $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 : 179 LATITUDE : 49 7.03182 N ! (deg min) LONGITUDE : 123 4.99885 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 19:03:10 54 54 HDREDIT2 3.1.1 2017/12/13 11:31:11 ? ? CALIB 12.0 2019/08/26 15:30:05 54 54 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 19:03:09 -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 15:30:05 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_20160309_220656 % Cast time (UTC),2016-03-09 22:06:56 % Cast time (local),2016-03-09 22:06:56 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.117197 % Start longitude,-123.0833142 % Start altitude,-15.159999847412109 % Start GPS horizontal error(Meter),1.9900000095367432 % Start GPS vertical error(Meter),2.9900000095367432 % Start GPS number of satellites,5 % End latitude,49.1169566 % End longitude,-123.0841652 % End altitude,-145.94000244140625 % End GPS horizontal error(Meter),12.75 % End GPS vertical error(Meter),25.639999389648438 % End GPS number of satellites,5 % Cast duration (Seconds),81.4 % 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 6.156 0.01283 0.02059 0.09 1431.40 1000.014 0.45 0.46 6.172 0.01290 0.02068 0.09 1431.48 1000.015 0.75 0.77 6.179 0.01724 0.02764 0.13 1431.56 1000.042 1.05 1.07 6.187 0.02516 0.04034 0.19 1431.67 1000.092 1.35 1.38 6.206 0.03301 0.05289 0.25 1431.84 1000.141 1.65 1.68 6.233 0.03681 0.05893 0.28 1432.00 1000.165 1.95 1.99 6.266 0.04318 0.06906 0.33 1432.21 1000.205 2.25 2.29 6.295 0.04997 0.07983 0.38 1432.41 1000.248 2.55 2.60 6.305 0.05141 0.08211 0.39 1432.48 1000.258 2.85 2.90 6.288 0.05358 0.08563 0.41 1432.43 1000.274 3.15 3.21 6.274 0.06042 0.09659 0.46 1432.44 1000.319 3.45 3.52 6.265 0.07298 0.11671 0.56 1432.54 1000.401 3.75 3.82 6.268 0.07598 0.12150 0.59 1432.59 1000.422 4.05 4.13 6.264 0.08380 0.13403 0.65 1432.66 1000.474 4.35 4.43 6.270 0.08929 0.14278 0.70 1432.75 1000.511 4.65 4.74 6.276 0.10351 0.16548 0.81 1432.93 1000.605 4.95 5.04 6.290 0.10874 0.17376 0.86 1433.05 1000.640 5.25 5.35 6.295 0.11905 0.19020 0.94 1433.18 1000.708 5.55 5.66 6.293 0.12360 0.19748 0.98 1433.23 1000.740 5.85 5.96 6.290 0.13944 0.22282 1.11 1433.39 1000.847 6.15 6.27 6.293 0.16015 0.25589 1.28 1433.63 1000.986 6.45 6.57 6.305 0.16702 0.26676 1.34 1433.76 1001.033 6.75 6.88 6.318 0.18351 0.29298 1.48 1434.00 1001.144 7.05 7.18 6.333 0.19421 0.30991 1.57 1434.19 1001.217 7.35 7.49 6.353 0.21362 0.34067 1.74 1434.49 1001.348 7.65 7.79 6.361 0.23071 0.36783 1.88 1434.71 1001.466 7.95 8.10 6.370 0.23205 0.36986 1.89 1434.77 1001.476 8.25 8.40 6.379 0.24012 0.38261 1.96 1434.91 1001.531 8.55 8.71 6.406 0.24930 0.39690 2.04 1435.13 1001.593 8.85 9.02 6.418 0.28686 0.45652 2.37 1435.60 1001.853 9.15 9.32 6.422 0.29749 0.47337 2.46 1435.74 1001.927 9.45 9.63 6.429 0.30604 0.48688 2.54 1435.87 1001.987 9.75 9.93 6.431 0.31344 0.49862 2.60 1435.96 1002.040 10.05 10.24 6.435 0.32394 0.51525 2.69 1436.11 1002.114 10.35 10.54 6.446 0.34420 0.54729 2.87 1436.38 1002.256 10.65 10.85 6.455 0.36119 0.57414 3.02 1436.62 1002.376 10.95 11.15 6.468 0.37426 0.59467 3.13 1436.82 1002.467 11.25 11.46 6.473 0.38325 0.60885 3.21 1436.95 1002.532 11.55 11.76 6.484 0.38341 0.60890 3.21 1437.00 1002.533 11.85 12.07 6.488 0.38574 0.61254 3.24 1437.05 1002.550 12.15 12.37 6.489 0.38747 0.61526 3.25 1437.08 1002.564 12.45 12.68 6.505 0.39161 0.62151 3.29 1437.20 1002.592 12.75 12.98 6.535 0.40450 0.64135 3.40 1437.47 1002.681 13.05 13.29 6.591 0.46014 0.72828 3.89 1438.34 1003.069 13.35 13.59 6.695 0.60221 0.95002 5.17 1440.41 1004.075 13.65 13.90 6.838 0.77537 1.21767 6.75 1443.01 1005.312 13.95 14.20 6.955 0.98340 1.53874 8.69 1445.92 1006.828 14.25 14.50 7.126 1.17853 1.83425 10.52 1448.91 1008.247 14.55 14.81 7.197 1.47149 2.28514 13.34 1452.73 1010.461 14.85 15.11 7.358 1.68034 2.59652 15.34 1455.87 1012.012 15.15 15.41 7.537 1.90235 2.92338 17.47 1459.23 1013.662 15.45 15.71 7.675 2.10390 3.21939 19.42 1462.20 1015.176 15.75 16.01 7.900 2.36562 3.59513 21.94 1466.20 1017.121 16.09 16.36 8.061 2.42352 3.66526 22.42 1467.43 1017.484