*2019/08/26 15:28:33.21 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2015/11/24 23:33:35.000 END TIME : UTC 2015/11/24 23:33:42.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 40 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 11.8 2 Depth metres 0.15 11.76 3 Temperature 'deg C (ITS90)' 9.009 9.921 4 Conductivity S/m 3.05359 3.30727 5 Conductance:Specific S/m 4.48944 4.73536 6 Salinity PSS-78 28.16 29.98 7 Speed:Sound m/s 1477.84 1483.63 8 Density kg/m^3 1021.765 1023.1 $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 : 2015-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 68 LATITUDE : 54 19.07767 N ! (deg min) LONGITUDE : 130 19.40495 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1441005 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 17:18:55 40 40 HDREDIT2 3.1.1 2017/12/13 11:29:02 ? ? CALIB 12.0 2019/08/26 15:28:33 40 40 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 17:18:54 -HEADER EDITS: 2017/12/13 11:29:02 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 15:28:33 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,CC1441005 % File name,CC1441005_20151124_233335 % Cast time (UTC),2015-11-24 23:33:35 % Cast time (local),2015-11-24 23:33:35 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,54.3179611 % Start longitude,-130.3234158 % Start altitude,-8.5600004196167 % Start GPS horizontal error(Meter),6.4600000381469727 % Start GPS vertical error(Meter),10.069999694824219 % 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),162.6 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2015-01-26 % Temperature calibration date,2015-01-26 % Pressure calibration date,2015-01-26 % 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 9.009 3.05359 4.48944 28.16 1477.84 1021.765 0.45 0.45 9.026 3.05963 4.49603 28.20 1477.97 1021.801 0.75 0.75 9.038 3.06043 4.49562 28.20 1478.02 1021.799 1.05 1.05 9.052 3.06248 4.49682 28.21 1478.09 1021.806 1.35 1.35 9.061 3.06856 4.50456 28.27 1478.19 1021.849 1.65 1.65 9.057 3.07160 4.50955 28.30 1478.22 1021.878 1.95 1.94 9.050 3.07282 4.51226 28.32 1478.22 1021.894 2.25 2.24 9.057 3.07254 4.51082 28.31 1478.25 1021.887 2.55 2.54 9.074 3.07720 4.51546 28.34 1478.36 1021.913 2.85 2.84 9.104 3.08284 4.51970 28.38 1478.52 1021.935 3.15 3.14 9.137 3.08899 4.52445 28.41 1478.68 1021.961 3.45 3.44 9.155 3.09172 4.52600 28.43 1478.78 1021.969 3.75 3.74 9.176 3.09392 4.52643 28.43 1478.87 1021.972 4.05 4.04 9.237 3.11442 4.54837 28.59 1479.29 1022.089 4.35 4.34 9.337 3.12926 4.55663 28.66 1479.76 1022.130 4.65 4.64 9.401 3.15311 4.58285 28.85 1480.23 1022.270 4.95 4.93 9.455 3.18508 4.62207 29.13 1480.78 1022.481 5.25 5.23 9.541 3.21040 4.64726 29.32 1481.32 1022.615 5.55 5.53 9.638 3.22691 4.65810 29.41 1481.79 1022.669 5.85 5.83 9.708 3.24662 4.67710 29.55 1482.23 1022.770 6.15 6.13 9.751 3.25894 4.68900 29.63 1482.50 1022.833 6.45 6.43 9.785 3.26220 4.68907 29.64 1482.63 1022.833 6.75 6.73 9.800 3.26519 4.69137 29.66 1482.71 1022.846 7.05 7.03 9.806 3.26614 4.69190 29.66 1482.75 1022.850 7.35 7.33 9.811 3.26729 4.69295 29.67 1482.78 1022.856 7.65 7.62 9.813 3.26790 4.69357 29.67 1482.80 1022.861 7.95 7.92 9.813 3.26926 4.69544 29.69 1482.82 1022.872 8.25 8.22 9.824 3.27317 4.69955 29.72 1482.90 1022.895 8.55 8.52 9.837 3.27761 4.70427 29.75 1482.99 1022.922 8.85 8.82 9.852 3.28545 4.71350 29.82 1483.13 1022.972 9.15 9.12 9.871 3.28992 4.71730 29.85 1483.24 1022.993 9.45 9.42 9.875 3.29229 4.72015 29.87 1483.29 1023.010 9.75 9.72 9.894 3.29675 4.72396 29.89 1483.40 1023.031 10.05 10.02 9.902 3.29852 4.72536 29.91 1483.45 1023.039 10.35 10.31 9.905 3.30176 4.72969 29.94 1483.50 1023.064 10.65 10.61 9.909 3.30221 4.72980 29.94 1483.52 1023.065 10.95 10.91 9.910 3.30210 4.72942 29.93 1483.53 1023.064 11.25 11.21 9.915 3.30523 4.73321 29.96 1483.58 1023.086 11.55 11.51 9.919 3.30668 4.73482 29.97 1483.61 1023.096 11.80 11.76 9.921 3.30727 4.73536 29.98 1483.63 1023.100