*2019/08/26 15:30:12.54 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/21 00:42:03.000 END TIME : UTC 2016/10/21 00:42:15.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 64 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.94 2 Depth metres 0.15 19.14 3 Temperature 'deg C (ITS90)' 10.567 10.777 4 Conductivity S/m 0.4561E-01 2.74207 5 Conductance:Specific S/m 0.6377E-01 3.85402 6 Salinity PSS-78 0.31 23.94 7 Speed:Sound m/s 1450.64 1478.83 8 Density kg/m^3 999.875 1018.333 $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 : 431 LATITUDE : 49 7.08221 N ! (deg min) LONGITUDE : 123 4.76033 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 23:04:17 64 64 HDREDIT2 3.1.1 2017/12/13 11:31:15 ? ? CALIB 12.0 2019/08/26 15:30:12 64 64 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 23:04:16 -HEADER EDITS: 2017/12/13 11:31:15 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 15:30:12 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_20161021_004203 % Cast time (UTC),2016-10-21 00:42:03 % Cast time (local),2016-10-21 00:42:03 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1180368 % Start longitude,-123.0793388 % Start altitude,-15.130000114440918 % Start GPS horizontal error(Meter),3.9600000381469727 % Start GPS vertical error(Meter),4.9899997711181641 % Start GPS number of satellites,6 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),117.8 % 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 10.753 0.04631 0.06477 0.31 1450.64 999.877 0.45 0.46 10.757 0.04596 0.06426 0.31 1450.65 999.876 0.75 0.77 10.761 0.04561 0.06377 0.31 1450.67 999.875 1.05 1.07 10.765 0.04660 0.06515 0.31 1450.70 999.882 1.35 1.38 10.769 0.04860 0.06794 0.33 1450.73 999.894 1.65 1.68 10.771 0.05640 0.07884 0.38 1450.82 999.937 1.95 1.99 10.772 0.06426 0.08982 0.44 1450.89 999.982 2.25 2.29 10.774 0.06789 0.09488 0.46 1450.94 1000.003 2.55 2.60 10.777 0.07119 0.09949 0.48 1450.98 1000.023 2.85 2.90 10.776 0.08059 0.11264 0.55 1451.07 1000.077 3.15 3.21 10.774 0.11249 0.15722 0.78 1451.35 1000.258 3.45 3.52 10.775 0.14615 0.20427 1.03 1451.66 1000.453 3.75 3.82 10.771 0.20240 0.28291 1.45 1452.17 1000.783 4.05 4.13 10.770 0.20543 0.28716 1.47 1452.20 1000.803 4.35 4.43 10.772 0.21205 0.29640 1.52 1452.27 1000.843 4.65 4.74 10.762 0.27261 0.38115 1.99 1452.81 1001.207 4.95 5.04 10.754 0.31184 0.43609 2.29 1453.16 1001.447 5.25 5.35 10.750 0.32966 0.46106 2.43 1453.32 1001.557 5.55 5.66 10.749 0.35098 0.49089 2.60 1453.53 1001.689 5.85 5.96 10.752 0.37592 0.52573 2.79 1453.78 1001.843 6.15 6.27 10.741 0.38500 0.53859 2.87 1453.84 1001.902 6.45 6.57 10.737 0.43409 0.60734 3.26 1454.30 1002.208 6.75 6.88 10.730 0.53941 0.75483 4.11 1455.32 1002.871 7.05 7.18 10.721 0.62467 0.87436 4.80 1456.14 1003.416 7.35 7.49 10.710 0.73040 1.02269 5.68 1457.16 1004.101 7.65 7.79 10.705 0.77852 1.09023 6.08 1457.64 1004.417 7.95 8.09 10.702 0.78670 1.10175 6.15 1457.72 1004.472 8.25 8.40 10.699 0.81060 1.13532 6.36 1457.95 1004.630 8.55 8.70 10.699 0.85437 1.19665 6.72 1458.40 1004.919 8.85 9.01 10.688 0.88063 1.23380 6.95 1458.64 1005.096 9.15 9.31 10.684 0.91242 1.27847 7.22 1458.96 1005.308 9.45 9.62 10.669 1.03925 1.45679 8.31 1460.22 1006.157 9.75 9.92 10.664 1.13919 1.59711 9.18 1461.26 1006.831 10.05 10.22 10.661 1.29669 1.81809 10.56 1462.91 1007.903 10.35 10.53 10.653 1.36751 1.91780 11.19 1463.64 1008.392 10.65 10.83 10.647 1.40894 1.97625 11.55 1464.07 1008.681 10.95 11.13 10.643 1.46358 2.05313 12.04 1464.65 1009.061 11.25 11.44 10.634 1.49752 2.10125 12.35 1464.99 1009.301 11.55 11.74 10.623 1.55168 2.17793 12.84 1465.54 1009.683 11.85 12.04 10.610 1.73437 2.43524 14.49 1467.49 1010.969 12.15 12.34 10.605 1.93290 2.71433 16.31 1469.66 1012.380 12.45 12.65 10.602 2.20545 3.09735 18.84 1472.70 1014.342 12.75 12.95 10.596 2.53371 3.55901 21.94 1476.40 1016.747 13.05 13.25 10.579 2.65164 3.72638 23.07 1477.71 1017.631 13.35 13.55 10.571 2.66800 3.75029 23.23 1477.88 1017.760 13.65 13.85 10.571 2.67738 3.76340 23.32 1477.99 1017.830 13.95 14.15 10.571 2.68893 3.77969 23.43 1478.13 1017.918 14.25 14.45 10.569 2.70268 3.79921 23.57 1478.29 1018.022 14.55 14.75 10.571 2.71004 3.80929 23.64 1478.38 1018.077 14.85 15.05 10.572 2.71858 3.82129 23.72 1478.49 1018.142 15.15 15.35 10.568 2.72329 3.82827 23.76 1478.54 1018.180 15.45 15.65 10.567 2.72608 3.83231 23.79 1478.57 1018.203 15.75 15.95 10.571 2.72717 3.83342 23.80 1478.60 1018.210 16.05 16.25 10.574 2.72868 3.83521 23.81 1478.63 1018.221 16.35 16.55 10.575 2.73153 3.83916 23.84 1478.67 1018.243 16.65 16.85 10.574 2.73269 3.84089 23.85 1478.69 1018.253 16.95 17.15 10.572 2.73389 3.84277 23.86 1478.70 1018.265 17.25 17.45 10.571 2.73550 3.84516 23.88 1478.72 1018.279 17.55 17.75 10.584 2.73591 3.84431 23.87 1478.77 1018.274 17.85 18.05 10.591 2.73830 3.84693 23.89 1478.82 1018.289 18.15 18.35 10.586 2.73974 3.84949 23.91 1478.83 1018.304 18.45 18.65 10.581 2.74096 3.85177 23.92 1478.83 1018.318 18.75 18.95 10.574 2.74184 3.85369 23.94 1478.83 1018.330 18.94 19.14 10.574 2.74207 3.85402 23.94 1478.83 1018.333