*2019/08/26 15:30:11.52 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/18 18:51:31.000 END TIME : UTC 2016/10/18 18:51:40.400 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 14.34 2 Depth metres 0.15 14.39 3 Temperature 'deg C (ITS90)' 10.517 10.703 4 Conductivity S/m 0.20437 3.19553 5 Conductance:Specific S/m 0.28742 4.49622 6 Salinity PSS-78 1.47 28.37 7 Speed:Sound m/s 1451.3 1483.96 8 Density kg/m^3 1000.808 1021.763 $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 : 401 LATITUDE : 49 7.52855 N ! (deg min) LONGITUDE : 123 12.37635 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 22:34:05 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 22:34:04 -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_185131 % Cast time (UTC),2016-10-18 18:51:31 % Cast time (local),2016-10-18 18:51:31 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1254759 % Start longitude,-123.2062725 % Start altitude,-22.430000305175781 % Start GPS horizontal error(Meter),2.9000000953674316 % Start GPS vertical error(Meter),4.1100001335144043 % Start GPS number of satellites,5 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),112.4 % 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 10.555 0.20556 0.28907 1.48 1451.32 1000.813 0.45 0.46 10.552 0.20437 0.28742 1.47 1451.30 1000.808 0.75 0.76 10.545 0.21750 0.30595 1.57 1451.40 1000.889 1.05 1.07 10.528 0.23552 0.33146 1.71 1451.51 1001.000 1.35 1.38 10.519 0.27800 0.39134 2.04 1451.88 1001.259 1.65 1.68 10.519 0.30364 0.42743 2.24 1452.13 1001.416 1.95 1.99 10.517 0.31899 0.44907 2.36 1452.28 1001.512 2.25 2.29 10.520 0.38478 0.54164 2.88 1452.93 1001.919 2.55 2.60 10.531 0.67968 0.95645 5.29 1455.92 1003.791 2.85 2.90 10.566 1.20322 1.69153 9.76 1461.48 1007.265 3.15 3.20 10.600 1.59982 2.24693 13.28 1465.85 1009.990 3.45 3.51 10.625 1.80599 2.53472 15.14 1468.19 1011.430 3.75 3.81 10.648 2.01388 2.82466 17.04 1470.56 1012.900 4.05 4.11 10.663 2.16859 3.04042 18.47 1472.34 1014.006 4.35 4.41 10.678 2.29952 3.22263 19.68 1473.86 1014.948 4.65 4.71 10.688 2.35209 3.29531 20.17 1474.49 1015.325 4.95 5.01 10.698 2.40860 3.37357 20.70 1475.16 1015.733 5.25 5.32 10.703 2.49645 3.49616 21.52 1476.17 1016.375 5.55 5.62 10.701 2.53992 3.55725 21.93 1476.67 1016.697 5.85 5.92 10.698 2.59965 3.64121 22.50 1477.34 1017.140 6.15 6.22 10.693 2.65134 3.71412 23.00 1477.92 1017.526 6.45 6.52 10.687 2.68086 3.75610 23.28 1478.25 1017.750 6.75 6.82 10.678 2.74028 3.84025 23.86 1478.92 1018.198 7.05 7.12 10.653 2.85503 4.00393 24.98 1480.17 1019.072 7.35 7.42 10.620 2.98596 4.19138 26.27 1481.61 1020.080 7.65 7.72 10.596 3.10580 4.36262 27.45 1482.96 1021.006 7.95 8.02 10.587 3.13637 4.40661 27.76 1483.30 1021.246 8.25 8.32 10.586 3.14331 4.41650 27.82 1483.38 1021.301 8.55 8.62 10.586 3.14609 4.42037 27.85 1483.42 1021.323 8.85 8.91 10.585 3.15466 4.43257 27.94 1483.52 1021.390 9.15 9.21 10.582 3.16202 4.44327 28.01 1483.61 1021.450 9.45 9.51 10.579 3.16538 4.44833 28.05 1483.64 1021.479 9.75 9.81 10.575 3.16638 4.45033 28.06 1483.65 1021.491 10.05 10.11 10.573 3.17055 4.45634 28.10 1483.70 1021.525 10.35 10.41 10.568 3.17175 4.45874 28.12 1483.70 1021.540 10.65 10.71 10.560 3.17377 4.46252 28.14 1483.71 1021.562 10.95 11.01 10.556 3.17735 4.46806 28.18 1483.75 1021.594 11.25 11.31 10.554 3.17976 4.47176 28.20 1483.77 1021.616 11.55 11.61 10.550 3.18223 4.47573 28.23 1483.80 1021.639 11.85 11.91 10.548 3.18275 4.47671 28.24 1483.80 1021.646 12.15 12.21 10.548 3.18286 4.47686 28.24 1483.81 1021.648 12.45 12.51 10.546 3.18365 4.47818 28.25 1483.82 1021.656 12.75 12.81 10.544 3.18447 4.47960 28.26 1483.83 1021.665 13.05 13.11 10.546 3.18483 4.47990 28.26 1483.84 1021.668 13.35 13.41 10.548 3.18786 4.48386 28.29 1483.89 1021.691 13.65 13.71 10.542 3.19066 4.48857 28.32 1483.91 1021.718 13.95 14.00 10.536 3.19360 4.49349 28.35 1483.93 1021.747 14.34 14.39 10.536 3.19553 4.49622 28.37 1483.96 1021.763