*2019/08/26 15:30:38.13 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 00:54:06.000 END TIME : UTC 2017/06/23 00:54:17.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 60 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.79 2 Depth metres 0.15 17.82 3 Temperature 'deg C (ITS90)' 11.696 11.911 4 Conductivity S/m 2.77314 2.80109 5 Conductance:Specific S/m 3.75712 3.81592 6 Salinity PSS-78 23.39 23.77 7 Speed:Sound m/s 1482.59 1482.76 8 Density kg/m^3 1017.613 1018.016 $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 : 563 LATITUDE : 49 17.54444 N ! (deg min) LONGITUDE : 123 0.33953 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 2017/12/09 01:13:26 60 60 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:38 60 60 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:13:26 -HEADER EDITS: 2017/12/13 11:33:22 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 15:30:38 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_20170623_005406 % Cast time (UTC),2017-06-23 00:54:06 % Cast time (local),2017-06-23 00:54:06 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2924074 % Start longitude,-123.0056588 % Start altitude,-18.690000534057617 % Start GPS horizontal error(Meter),1.8500000238418579 % Start GPS vertical error(Meter),2.9300000667572021 % Start GPS number of satellites,8 % End latitude,49.292227 % End longitude,-123.0055601 % End altitude,-15.079999923706055 % End GPS horizontal error(Meter),16.100000381469727 % End GPS vertical error(Meter),27.409999847412109 % End GPS number of satellites,5 % Cast duration (Seconds),58.8 % 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 11.870 2.77660 3.76542 23.44 1482.59 1017.654 0.45 0.45 11.869 2.77653 3.76543 23.44 1482.59 1017.655 0.75 0.75 11.865 2.77675 3.76613 23.45 1482.59 1017.660 1.05 1.05 11.867 2.77872 3.76856 23.46 1482.62 1017.674 1.35 1.35 11.885 2.77828 3.76614 23.45 1482.67 1017.661 1.65 1.65 11.898 2.77441 3.75953 23.40 1482.67 1017.626 1.95 1.95 11.905 2.77316 3.75712 23.39 1482.68 1017.613 2.25 2.25 11.911 2.77411 3.75781 23.39 1482.71 1017.618 2.55 2.55 11.911 2.77625 3.76078 23.41 1482.74 1017.635 2.85 2.85 11.904 2.77426 3.75879 23.40 1482.70 1017.626 3.15 3.15 11.903 2.77314 3.75735 23.39 1482.69 1017.620 3.45 3.46 11.905 2.77468 3.75926 23.40 1482.72 1017.631 3.75 3.76 11.902 2.77522 3.76021 23.41 1482.73 1017.638 4.05 4.06 11.900 2.77518 3.76044 23.41 1482.72 1017.641 4.35 4.36 11.901 2.77548 3.76068 23.41 1482.74 1017.643 4.65 4.66 11.898 2.77601 3.76178 23.42 1482.74 1017.651 4.95 4.96 11.895 2.77601 3.76209 23.42 1482.73 1017.654 5.25 5.26 11.892 2.77704 3.76373 23.43 1482.74 1017.664 5.55 5.56 11.884 2.77760 3.76527 23.44 1482.73 1017.675 5.85 5.86 11.879 2.77799 3.76636 23.45 1482.72 1017.682 6.15 6.16 11.876 2.77863 3.76752 23.45 1482.73 1017.690 6.45 6.46 11.878 2.77851 3.76719 23.45 1482.74 1017.689 6.75 6.76 11.879 2.77856 3.76715 23.45 1482.74 1017.690 7.05 7.06 11.876 2.77721 3.76559 23.44 1482.73 1017.684 7.35 7.36 11.876 2.77545 3.76319 23.42 1482.71 1017.672 7.65 7.66 11.882 2.77338 3.75977 23.40 1482.71 1017.655 7.95 7.96 11.886 2.77621 3.76320 23.42 1482.76 1017.674 8.25 8.26 11.880 2.77708 3.76506 23.44 1482.76 1017.686 8.55 8.56 11.871 2.77737 3.76633 23.44 1482.74 1017.695 8.85 8.87 11.870 2.77673 3.76553 23.44 1482.73 1017.692 9.15 9.16 11.866 2.77678 3.76604 23.44 1482.73 1017.696 9.45 9.47 11.862 2.77787 3.76793 23.45 1482.73 1017.708 9.75 9.77 11.852 2.77886 3.77033 23.47 1482.72 1017.723 10.05 10.07 11.838 2.77857 3.77137 23.48 1482.68 1017.731 10.35 10.37 11.817 2.77802 3.77274 23.48 1482.62 1017.742 10.65 10.67 11.801 2.78060 3.77792 23.52 1482.61 1017.773 10.95 10.97 11.799 2.78545 3.78472 23.56 1482.66 1017.810 11.25 11.27 11.802 2.78547 3.78438 23.56 1482.68 1017.810 11.55 11.57 11.804 2.78496 3.78351 23.56 1482.68 1017.806 11.85 11.87 11.807 2.78457 3.78270 23.55 1482.69 1017.803 12.15 12.17 11.805 2.78396 3.78207 23.55 1482.68 1017.801 12.45 12.47 11.800 2.78427 3.78298 23.55 1482.68 1017.808 12.75 12.77 11.789 2.78321 3.78266 23.55 1482.64 1017.808 13.05 13.07 11.783 2.78645 3.78769 23.58 1482.67 1017.837 13.35 13.37 11.781 2.78619 3.78750 23.58 1482.66 1017.837 13.65 13.67 11.779 2.78652 3.78819 23.59 1482.66 1017.843 13.95 13.97 11.775 2.78730 3.78961 23.59 1482.67 1017.852 14.25 14.27 11.766 2.78681 3.78991 23.60 1482.64 1017.856 14.55 14.57 11.755 2.78773 3.79234 23.61 1482.62 1017.871 14.85 14.87 11.741 2.79038 3.79735 23.65 1482.62 1017.900 15.15 15.18 11.732 2.79132 3.79957 23.66 1482.61 1017.915 15.45 15.47 11.728 2.79787 3.80887 23.72 1482.68 1017.966 15.75 15.78 11.719 2.79961 3.81223 23.75 1482.68 1017.986 16.05 16.08 11.710 2.79837 3.81144 23.74 1482.64 1017.984 16.35 16.38 11.709 2.79829 3.81148 23.74 1482.64 1017.985 16.65 16.68 11.706 2.80003 3.81408 23.76 1482.66 1018.001 16.95 16.98 11.699 2.80059 3.81561 23.77 1482.65 1018.011 17.25 17.28 11.698 2.79939 3.81412 23.76 1482.64 1018.005 17.55 17.58 11.696 2.79935 3.81419 23.76 1482.64 1018.006 17.79 17.82 11.703 2.80109 3.81592 23.77 1482.68 1018.016