*2019/08/26 15:30:11.41 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/18 17:16:41.000 END TIME : UTC 2016/10/18 17:16:52.800 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)' 10.491 10.763 4 Conductivity S/m 0.43254 3.25611 5 Conductance:Specific S/m 0.6092 4.56971 6 Salinity PSS-78 3.26 28.89 7 Speed:Sound m/s 1453.26 1484.98 8 Density kg/m^3 1002.211 1022.17 $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 : 399 LATITUDE : 49 7.57814 N ! (deg min) LONGITUDE : 123 15.00325 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 22:32:03 60 60 HDREDIT2 3.1.1 2017/12/13 11:31:14 ? ? CALIB 12.0 2019/08/26 15:30:11 60 60 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:32:02 -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_171641 % Cast time (UTC),2016-10-18 17:16:41 % Cast time (local),2016-10-18 17:16:41 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1263023 % Start longitude,-123.2500541 % Start altitude,-34.520000457763672 % Start GPS horizontal error(Meter),4.0100002288818359 % Start GPS vertical error(Meter),6.8400001525878906 % 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),76.2 % 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 10.491 0.43259 0.60944 3.27 1453.26 1002.212 0.45 0.46 10.501 0.43254 0.60920 3.26 1453.30 1002.211 0.75 0.76 10.493 0.46230 0.65125 3.50 1453.57 1002.401 1.05 1.07 10.497 0.50228 0.70750 3.83 1453.98 1002.654 1.35 1.37 10.520 0.53726 0.75628 4.11 1454.42 1002.873 1.65 1.68 10.544 0.56574 0.79582 4.34 1454.80 1003.051 1.95 1.98 10.565 0.66450 0.93419 5.15 1455.88 1003.682 2.25 2.29 10.579 0.89172 1.25315 7.07 1458.26 1005.167 2.55 2.59 10.604 1.19188 1.67378 9.65 1461.49 1007.174 2.85 2.89 10.636 1.44742 2.03081 11.90 1464.32 1008.915 3.15 3.20 10.658 1.92012 2.69241 16.17 1469.55 1012.224 3.45 3.50 10.699 2.28719 3.20340 19.56 1473.77 1014.842 3.75 3.80 10.735 2.45754 3.43861 21.14 1475.80 1016.064 4.05 4.10 10.744 2.52767 3.53580 21.79 1476.63 1016.574 4.35 4.40 10.748 2.54557 3.56041 21.96 1476.85 1016.704 4.65 4.70 10.750 2.58479 3.61510 22.33 1477.31 1016.992 4.95 5.00 10.752 2.68663 3.75729 23.30 1478.48 1017.744 5.25 5.30 10.757 2.77675 3.88279 24.16 1479.54 1018.410 5.55 5.60 10.763 2.84106 3.97205 24.77 1480.30 1018.886 5.85 5.90 10.760 2.89397 4.04632 25.28 1480.91 1019.284 6.15 6.20 10.755 2.92497 4.09026 25.58 1481.26 1019.521 6.45 6.50 10.751 2.96247 4.14315 25.95 1481.69 1019.806 6.75 6.80 10.749 2.98921 4.18088 26.21 1481.99 1020.010 7.05 7.10 10.748 2.99546 4.18974 26.27 1482.07 1020.059 7.35 7.40 10.746 3.00407 4.20192 26.35 1482.17 1020.126 7.65 7.70 10.748 3.01622 4.21869 26.47 1482.32 1020.217 7.95 8.00 10.745 3.02274 4.22823 26.53 1482.39 1020.270 8.25 8.30 10.741 3.02389 4.23030 26.55 1482.40 1020.283 8.55 8.60 10.738 3.02757 4.23577 26.58 1482.44 1020.314 8.85 8.90 10.736 3.02814 4.23684 26.59 1482.45 1020.321 9.15 9.20 10.733 3.03118 4.24144 26.62 1482.48 1020.347 9.45 9.50 10.733 3.04502 4.26085 26.76 1482.64 1020.453 9.75 9.80 10.728 3.05345 4.27317 26.84 1482.74 1020.521 10.05 10.10 10.720 3.07466 4.30382 27.05 1482.97 1020.688 10.35 10.40 10.715 3.09849 4.33778 27.29 1483.24 1020.873 10.65 10.70 10.708 3.10706 4.35064 27.38 1483.32 1020.945 10.95 11.00 10.704 3.11309 4.35958 27.44 1483.39 1020.995 11.25 11.30 10.703 3.11887 4.36781 27.50 1483.46 1021.040 11.55 11.60 10.696 3.13465 4.39077 27.66 1483.63 1021.166 11.85 11.90 10.692 3.14881 4.41113 27.80 1483.79 1021.278 12.15 12.20 10.688 3.16997 4.44120 28.01 1484.03 1021.443 12.45 12.50 10.682 3.18782 4.46701 28.18 1484.23 1021.584 12.75 12.80 10.669 3.21352 4.50462 28.45 1484.50 1021.791 13.05 13.10 10.658 3.22997 4.52914 28.62 1484.67 1021.926 13.35 13.39 10.647 3.23473 4.53717 28.67 1484.71 1021.972 13.65 13.69 10.634 3.24265 4.54997 28.76 1484.77 1022.044 13.95 13.99 10.632 3.24467 4.55307 28.78 1484.79 1022.062 14.25 14.29 10.626 3.24795 4.55841 28.82 1484.82 1022.093 14.55 14.59 10.619 3.25053 4.56288 28.85 1484.84 1022.119 14.85 14.89 10.616 3.25110 4.56403 28.86 1484.84 1022.127 15.15 15.19 10.616 3.25211 4.56552 28.86 1484.86 1022.137 15.45 15.49 10.619 3.25282 4.56613 28.87 1484.88 1022.141 15.75 15.79 10.622 3.25355 4.56675 28.87 1484.90 1022.145 16.05 16.09 10.625 3.25379 4.56669 28.87 1484.92 1022.146 16.35 16.39 10.623 3.25413 4.56747 28.88 1484.92 1022.152 16.65 16.68 10.621 3.25405 4.56761 28.88 1484.92 1022.154 16.95 16.98 10.619 3.25437 4.56829 28.88 1484.92 1022.159 17.25 17.28 10.619 3.25430 4.56817 28.88 1484.93 1022.160 17.55 17.58 10.622 3.25510 4.56896 28.89 1484.95 1022.165 17.79 17.82 10.627 3.25611 4.56971 28.89 1484.98 1022.170