*2019/08/26 15:30:34.61 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/04 02:09:50.000 END TIME : UTC 2017/03/04 02:09:59.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 47 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 13.86 2 Depth metres 0.15 13.85 3 Temperature 'deg C (ITS90)' 7.384 7.507 4 Conductivity S/m 2.71336 2.77102 5 Conductance:Specific S/m 4.18619 4.26241 6 Salinity PSS-78 25.87 26.4 7 Speed:Sound m/s 1468.8 1470.13 8 Density kg/m^3 1020.19 1020.651 $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 : 349 LATITUDE : 49 17.64311 N ! (deg min) LONGITUDE : 123 6.92431 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 21:41:09 47 47 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:34 47 47 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:41:09 -HEADER EDITS: 2017/12/13 11:33:19 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 15:30:34 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_20170304_020950 % Cast time (UTC),2017-03-04 02:09:50 % Cast time (local),2017-03-04 02:09:50 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2940519 % Start longitude,-123.1154051 % Start altitude,-19.819999694824219 % Start GPS horizontal error(Meter),1.309999942779541 % Start GPS vertical error(Meter),2.2999999523162842 % Start GPS number of satellites,9 % End latitude,49.2940094 % End longitude,-123.1153921 % End altitude,-11.739999771118164 % End GPS horizontal error(Meter),4.96999979019165 % End GPS vertical error(Meter),7.6700000762939453 % End GPS number of satellites,9 % Cast duration (Seconds),56.6 % 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 7.384 2.71336 4.18942 25.89 1468.80 1020.206 0.45 0.45 7.412 2.71369 4.18619 25.87 1468.90 1020.190 0.75 0.75 7.439 2.73283 4.21231 26.05 1469.23 1020.330 1.05 1.05 7.444 2.73849 4.22029 26.11 1469.33 1020.374 1.35 1.35 7.443 2.74149 4.22504 26.14 1469.37 1020.400 1.65 1.65 7.439 2.74275 4.22752 26.15 1469.38 1020.415 1.95 1.95 7.433 2.74484 4.23155 26.18 1469.39 1020.438 2.25 2.25 7.436 2.74673 4.23412 26.20 1469.42 1020.453 2.55 2.55 7.442 2.74887 4.23652 26.22 1469.48 1020.467 2.85 2.85 7.452 2.75218 4.24037 26.24 1469.56 1020.489 3.15 3.15 7.460 2.75397 4.24216 26.26 1469.61 1020.499 3.45 3.45 7.465 2.75508 4.24318 26.26 1469.64 1020.506 3.75 3.75 7.470 2.75734 4.24599 26.28 1469.69 1020.522 4.05 4.05 7.475 2.75873 4.24745 26.29 1469.73 1020.531 4.35 4.35 7.479 2.75939 4.24797 26.30 1469.75 1020.535 4.65 4.64 7.482 2.76099 4.25001 26.31 1469.79 1020.547 4.95 4.95 7.484 2.76225 4.25167 26.32 1469.82 1020.558 5.25 5.24 7.486 2.76274 4.25223 26.33 1469.83 1020.562 5.55 5.54 7.487 2.76345 4.25313 26.33 1469.85 1020.568 5.85 5.84 7.490 2.76515 4.25534 26.35 1469.88 1020.581 6.15 6.14 7.494 2.76577 4.25581 26.35 1469.91 1020.585 6.45 6.44 7.495 2.76580 4.25574 26.35 1469.92 1020.586 6.75 6.74 7.496 2.76596 4.25591 26.35 1469.93 1020.588 7.05 7.04 7.498 2.76638 4.25629 26.36 1469.94 1020.591 7.35 7.34 7.498 2.76334 4.25159 26.32 1469.91 1020.567 7.65 7.64 7.498 2.76626 4.25599 26.35 1469.95 1020.592 7.95 7.94 7.499 2.76658 4.25645 26.36 1469.96 1020.596 8.25 8.24 7.499 2.76696 4.25699 26.36 1469.97 1020.600 8.55 8.54 7.500 2.76709 4.25710 26.36 1469.98 1020.602 8.85 8.84 7.499 2.76645 4.25620 26.36 1469.97 1020.598 9.15 9.14 7.500 2.76468 4.25332 26.34 1469.96 1020.584 9.45 9.44 7.501 2.76740 4.25747 26.36 1470.00 1020.608 9.75 9.74 7.502 2.76816 4.25852 26.37 1470.02 1020.615 10.05 10.04 7.502 2.74856 4.22824 26.16 1469.77 1020.454 10.35 10.34 7.503 2.76897 4.25951 26.38 1470.05 1020.623 10.65 10.64 7.503 2.76895 4.25958 26.38 1470.05 1020.624 10.95 10.94 7.503 2.76858 4.25893 26.37 1470.05 1020.622 11.25 11.24 7.503 2.76877 4.25922 26.38 1470.06 1020.625 11.55 11.54 7.504 2.76886 4.25931 26.38 1470.06 1020.627 11.85 11.84 7.503 2.76852 4.25890 26.37 1470.06 1020.626 12.15 12.14 7.504 2.76883 4.25923 26.38 1470.07 1020.629 12.45 12.44 7.504 2.76863 4.25890 26.37 1470.08 1020.628 12.75 12.73 7.503 2.76974 4.26068 26.39 1470.09 1020.639 13.05 13.04 7.504 2.77045 4.26173 26.39 1470.11 1020.646 13.35 13.34 7.505 2.77102 4.26241 26.40 1470.12 1020.651 13.65 13.63 7.506 2.77067 4.26181 26.39 1470.13 1020.649 13.86 13.85 7.507 2.77061 4.26160 26.39 1470.13 1020.649