*2019/08/26 15:30:37.19 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/22 16:51:33.000 END TIME : UTC 2017/06/22 16:51:41.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 44 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 12.94 2 Depth metres 0.15 12.98 3 Temperature 'deg C (ITS90)' 11.785 13.699 4 Conductivity S/m 2.13141 2.72225 5 Conductance:Specific S/m 2.75387 3.70022 6 Salinity PSS-78 16.72 22.98 7 Speed:Sound m/s 1480.75 1483.17 8 Density kg/m^3 1012.16 1017.373 $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 : 543 LATITUDE : 49 17.64734 N ! (deg min) LONGITUDE : 122 58.89383 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 00:53:56 44 44 HDREDIT2 3.1.1 2017/12/13 11:33:21 ? ? CALIB 12.0 2019/08/26 15:30:37 44 44 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:53:55 -HEADER EDITS: 2017/12/13 11:33:21 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 15:30:37 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_20170622_165133 % Cast time (UTC),2017-06-22 16:51:33 % Cast time (local),2017-06-22 16:51:33 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2941223 % Start longitude,-122.9815639 % Start altitude,-17.319999694824219 % Start GPS horizontal error(Meter),2.7999999523162842 % Start GPS vertical error(Meter),3.2200000286102295 % 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),83.4 % 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 13.699 2.13141 2.75387 16.72 1481.06 1012.160 0.45 0.45 13.681 2.14520 2.77294 16.84 1481.15 1012.261 0.75 0.76 13.620 2.15993 2.79638 17.00 1481.13 1012.391 1.05 1.06 13.541 2.16599 2.80999 17.08 1480.96 1012.473 1.35 1.36 13.443 2.17360 2.82706 17.19 1480.75 1012.575 1.65 1.66 13.356 2.22295 2.89776 17.66 1481.00 1012.950 1.95 1.96 13.262 2.30826 3.01636 18.45 1481.61 1013.574 2.25 2.27 13.111 2.42767 3.18496 19.57 1482.41 1014.467 2.55 2.57 12.981 2.53593 3.33842 20.60 1483.17 1015.284 2.85 2.87 12.831 2.57406 3.40203 21.02 1483.15 1015.637 3.15 3.17 12.697 2.57694 3.41793 21.12 1482.81 1015.739 3.45 3.47 12.618 2.58030 3.42964 21.20 1482.62 1015.811 3.75 3.77 12.569 2.59030 3.44741 21.32 1482.60 1015.912 4.05 4.07 12.545 2.59645 3.45781 21.39 1482.60 1015.970 4.35 4.37 12.522 2.60146 3.46661 21.44 1482.59 1016.021 4.65 4.67 12.497 2.60260 3.47045 21.47 1482.54 1016.045 4.95 4.97 12.470 2.60409 3.47490 21.50 1482.48 1016.073 5.25 5.28 12.448 2.60414 3.47700 21.51 1482.43 1016.088 5.55 5.58 12.428 2.60596 3.48128 21.54 1482.39 1016.114 5.85 5.88 12.405 2.61370 3.49376 21.62 1482.42 1016.184 6.15 6.18 12.376 2.61748 3.50158 21.67 1482.38 1016.230 6.45 6.48 12.355 2.61968 3.50642 21.70 1482.35 1016.259 6.75 6.78 12.331 2.62421 3.51482 21.76 1482.33 1016.307 7.05 7.08 12.306 2.63756 3.53506 21.89 1482.41 1016.418 7.35 7.38 12.290 2.64044 3.54045 21.93 1482.40 1016.449 7.65 7.68 12.270 2.64109 3.54314 21.95 1482.36 1016.467 7.95 7.98 12.250 2.64166 3.54583 21.96 1482.31 1016.485 8.25 8.28 12.239 2.64578 3.55241 22.01 1482.33 1016.522 8.55 8.59 12.223 2.65051 3.56034 22.06 1482.34 1016.567 8.85 8.89 12.187 2.64989 3.56292 22.08 1482.24 1016.586 9.15 9.19 12.157 2.65275 3.56967 22.12 1482.19 1016.626 9.45 9.49 12.121 2.65550 3.57685 22.17 1482.12 1016.670 9.75 9.79 12.085 2.66023 3.58669 22.23 1482.08 1016.727 10.05 10.09 12.050 2.67712 3.61282 22.41 1482.17 1016.870 10.35 10.39 12.002 2.68698 3.63083 22.53 1482.14 1016.972 10.65 10.69 11.965 2.69023 3.63890 22.58 1482.08 1017.020 10.95 10.99 11.925 2.69183 3.64503 22.62 1481.99 1017.058 11.25 11.29 11.897 2.69282 3.64913 22.64 1481.92 1017.084 11.55 11.59 11.893 2.69613 3.65400 22.68 1481.95 1017.111 11.85 11.89 11.901 2.69630 3.65346 22.67 1481.98 1017.109 12.15 12.19 11.898 2.70020 3.65905 22.71 1482.02 1017.140 12.45 12.49 11.880 2.70151 3.66253 22.73 1481.99 1017.162 12.75 12.79 11.811 2.71618 3.68933 22.91 1481.96 1017.312 12.94 12.98 11.785 2.72225 3.70022 22.98 1481.96 1017.373