*2019/08/26 15:30:11.65 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/18 21:36:05.000 END TIME : UTC 2016/10/18 21:36:14.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 48 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 14.39 2 Depth metres 0.15 14.46 3 Temperature 'deg C (ITS90)' 10.581 10.606 4 Conductivity S/m 0.36838 3.22985 5 Conductance:Specific S/m 0.51748 4.53641 6 Salinity PSS-78 2.75 28.66 7 Speed:Sound m/s 1453.02 1484.54 8 Density kg/m^3 1001.795 1021.976 $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 : 404 LATITUDE : 49 7.50181 N ! (deg min) LONGITUDE : 123 15.12960 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1606003 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 22:37:03 48 48 HDREDIT2 3.1.1 2017/12/13 11:31:14 ? ? CALIB 12.0 2019/08/26 15:30:11 48 48 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:37:02 -HEADER EDITS: 2017/12/13 11:31:14 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 15:30:11 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,CC1606003 % File name,CC1606003_20161018_213605 % Cast time (UTC),2016-10-18 21:36:05 % Cast time (local),2016-10-18 21:36:05 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1250301 % Start longitude,-123.25216 % Start altitude,-16.670000076293945 % Start GPS horizontal error(Meter),2.6600000858306885 % Start GPS vertical error(Meter),2.869999885559082 % Start GPS number of satellites,7 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),88.8 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2016-03-01 % Temperature calibration date,2016-02-23 % Pressure calibration date,2016-02-12 % 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 10.593 0.36838 0.51748 2.75 1453.02 1001.795 0.45 0.46 10.593 0.36957 0.51916 2.75 1453.03 1001.804 0.75 0.76 10.593 0.36986 0.51957 2.76 1453.04 1001.807 1.05 1.07 10.594 0.37058 0.52056 2.76 1453.06 1001.813 1.35 1.37 10.594 0.37117 0.52138 2.77 1453.07 1001.818 1.65 1.68 10.597 0.37189 0.52236 2.77 1453.09 1001.823 1.95 1.98 10.600 0.37293 0.52377 2.78 1453.12 1001.831 2.25 2.29 10.599 0.37380 0.52501 2.79 1453.12 1001.838 2.55 2.60 10.599 0.37449 0.52598 2.79 1453.14 1001.843 2.85 2.90 10.601 0.37706 0.52955 2.81 1453.18 1001.860 3.15 3.21 10.605 0.38518 0.54092 2.88 1453.27 1001.911 3.45 3.51 10.599 0.40923 0.57478 3.07 1453.49 1002.063 3.75 3.82 10.597 0.48682 0.68380 3.69 1454.25 1002.550 4.05 4.12 10.597 0.79467 1.11619 6.24 1457.35 1004.531 4.35 4.42 10.598 1.33572 1.87609 10.92 1463.02 1008.166 4.65 4.73 10.594 1.70935 2.40117 14.28 1467.05 1010.767 4.95 5.03 10.595 1.90139 2.67090 16.03 1469.16 1012.129 5.25 5.33 10.601 2.15324 3.02410 18.36 1471.99 1013.933 5.55 5.63 10.603 2.38499 3.34938 20.53 1474.62 1015.618 5.85 5.93 10.602 2.51850 3.53700 21.79 1476.14 1016.601 6.15 6.23 10.601 2.67209 3.75281 23.25 1477.90 1017.739 6.45 6.54 10.605 2.76276 3.87970 24.12 1478.96 1018.412 6.75 6.83 10.606 2.85101 4.00356 24.97 1479.99 1019.073 7.05 7.13 10.603 2.90558 4.08058 25.50 1480.62 1019.486 7.35 7.43 10.599 2.94331 4.13396 25.87 1481.06 1019.774 7.65 7.74 10.599 2.97391 4.17693 26.16 1481.42 1020.005 7.95 8.03 10.597 3.00270 4.21764 26.45 1481.75 1020.226 8.25 8.33 10.596 3.02411 4.24782 26.65 1482.01 1020.389 8.55 8.63 10.598 3.04548 4.27760 26.86 1482.27 1020.551 8.85 8.93 10.597 3.07576 4.32024 27.16 1482.62 1020.782 9.15 9.23 10.594 3.08753 4.33713 27.27 1482.76 1020.875 9.45 9.53 10.592 3.09662 4.35016 27.36 1482.87 1020.947 9.75 9.83 10.592 3.12313 4.38737 27.62 1483.18 1021.149 10.05 10.13 10.590 3.15980 4.43920 27.98 1483.62 1021.431 10.35 10.43 10.585 3.16928 4.45310 28.08 1483.72 1021.508 10.65 10.73 10.584 3.16884 4.45262 28.07 1483.72 1021.507 10.95 11.03 10.585 3.18498 4.47519 28.23 1483.91 1021.630 11.25 11.33 10.581 3.19778 4.49367 28.36 1484.06 1021.732 11.55 11.63 10.583 3.20399 4.50214 28.42 1484.14 1021.779 11.85 11.93 10.583 3.21233 4.51381 28.50 1484.25 1021.844 12.15 12.23 10.585 3.21525 4.51771 28.53 1484.29 1021.866 12.45 12.53 10.585 3.21831 4.52199 28.56 1484.33 1021.891 12.75 12.82 10.586 3.22258 4.52784 28.60 1484.39 1021.924 13.05 13.12 10.586 3.22427 4.53023 28.62 1484.41 1021.938 13.35 13.42 10.590 3.22672 4.53323 28.64 1484.46 1021.955 13.65 13.72 10.597 3.22725 4.53307 28.64 1484.49 1021.955 13.95 14.02 10.596 3.22958 4.53641 28.66 1484.52 1021.975 14.39 14.46 10.600 3.22985 4.53630 28.66 1484.54 1021.976