*2019/08/26 15:30:34.46 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/04 01:57:54.000 END TIME : UTC 2017/03/04 01:58:07.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 68 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 20.21 2 Depth metres 0.15 20.2 3 Temperature 'deg C (ITS90)' 6.999 7.219 4 Conductivity S/m 2.62581 2.7073 5 Conductance:Specific S/m 4.10247 4.20168 6 Salinity PSS-78 25.25 25.94 7 Speed:Sound m/s 1466.49 1468.52 8 Density kg/m^3 1019.75 1020.357 $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 : 347 LATITUDE : 49 18.27026 N ! (deg min) LONGITUDE : 123 6.68959 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1545005 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/08 21:39:15 68 68 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:34 68 68 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:39:15 -HEADER EDITS: 2017/12/13 11:33:19 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 15:30:34 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,CC1545005 % File name,CC1545005_20170304_015754 % Cast time (UTC),2017-03-04 01:57:54 % Cast time (local),2017-03-04 01:57:54 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3045044 % Start longitude,-123.1114932 % Start altitude,-14.300000190734863 % Start GPS horizontal error(Meter),2.6600000858306885 % Start GPS vertical error(Meter),5.2899999618530273 % Start GPS number of satellites,5 % End latitude,49.3044069 % End longitude,-123.1105184 % End altitude,-32.590000152587891 % End GPS horizontal error(Meter),8.9499998092651367 % End GPS vertical error(Meter),19.090000152587891 % End GPS number of satellites,5 % Cast duration (Seconds),62.6 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2015-11-20 % Temperature calibration date,2015-11-19 % Pressure calibration date,2015-11-17 % 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 6.999 2.62581 4.10292 25.25 1466.49 1019.751 0.45 0.45 7.003 2.62587 4.10247 25.25 1466.51 1019.750 0.75 0.75 7.003 2.62670 4.10382 25.26 1466.52 1019.758 1.05 1.05 7.006 2.62637 4.10297 25.25 1466.53 1019.755 1.35 1.35 7.010 2.62801 4.10494 25.27 1466.57 1019.767 1.65 1.65 7.022 2.63686 4.11726 25.35 1466.73 1019.833 1.95 1.95 7.045 2.64715 4.13032 25.44 1466.94 1019.904 2.25 2.25 7.064 2.65344 4.13775 25.49 1467.08 1019.944 2.55 2.55 7.074 2.65492 4.13871 25.50 1467.14 1019.951 2.85 2.85 7.082 2.65631 4.13987 25.51 1467.18 1019.958 3.15 3.15 7.092 2.66037 4.14487 25.55 1467.27 1019.986 3.45 3.45 7.104 2.66535 4.15110 25.59 1467.38 1020.020 3.75 3.75 7.116 2.66749 4.15292 25.60 1467.45 1020.031 4.05 4.05 7.128 2.67231 4.15890 25.64 1467.55 1020.064 4.35 4.35 7.133 2.67821 4.16740 25.70 1467.65 1020.111 4.65 4.65 7.136 2.68106 4.17141 25.73 1467.70 1020.133 4.95 4.95 7.137 2.68214 4.17298 25.74 1467.72 1020.143 5.25 5.25 7.141 2.68054 4.16991 25.72 1467.72 1020.128 5.55 5.55 7.147 2.68495 4.17607 25.76 1467.80 1020.162 5.85 5.85 7.147 2.68526 4.17659 25.77 1467.81 1020.166 6.15 6.15 7.146 2.68481 4.17594 25.76 1467.81 1020.164 6.45 6.45 7.145 2.68506 4.17646 25.77 1467.81 1020.168 6.75 6.75 7.145 2.68493 4.17624 25.76 1467.81 1020.168 7.05 7.05 7.146 2.68505 4.17639 25.77 1467.82 1020.170 7.35 7.34 7.146 2.68515 4.17654 25.77 1467.83 1020.172 7.65 7.64 7.146 2.68482 4.17599 25.76 1467.83 1020.171 7.95 7.95 7.146 2.68484 4.17601 25.76 1467.83 1020.172 8.25 8.24 7.146 2.68495 4.17623 25.76 1467.84 1020.174 8.55 8.54 7.145 2.68417 4.17511 25.76 1467.83 1020.170 8.85 8.84 7.145 2.68394 4.17468 25.75 1467.84 1020.169 9.15 9.14 7.147 2.68407 4.17463 25.75 1467.85 1020.170 9.45 9.44 7.149 2.68425 4.17476 25.75 1467.86 1020.172 9.75 9.74 7.150 2.68529 4.17612 25.76 1467.88 1020.180 10.05 10.04 7.149 2.68545 4.17657 25.77 1467.88 1020.184 10.35 10.34 7.150 2.68497 4.17569 25.76 1467.89 1020.181 10.65 10.64 7.152 2.68523 4.17580 25.76 1467.90 1020.182 10.95 10.94 7.152 2.68756 4.17949 25.79 1467.93 1020.203 11.25 11.24 7.153 2.68744 4.17918 25.78 1467.94 1020.203 11.55 11.54 7.152 2.68729 4.17899 25.78 1467.94 1020.203 11.85 11.84 7.154 2.68815 4.18017 25.79 1467.96 1020.211 12.15 12.14 7.154 2.68779 4.17957 25.79 1467.96 1020.209 12.45 12.44 7.154 2.68916 4.18164 25.80 1467.99 1020.221 12.75 12.74 7.156 2.68941 4.18184 25.80 1468.00 1020.224 13.05 13.04 7.160 2.68917 4.18090 25.80 1468.01 1020.220 13.35 13.34 7.162 2.69081 4.18324 25.81 1468.05 1020.234 13.65 13.64 7.162 2.69095 4.18339 25.81 1468.05 1020.236 13.95 13.94 7.163 2.69048 4.18252 25.81 1468.06 1020.232 14.25 14.24 7.164 2.69052 4.18250 25.81 1468.06 1020.234 14.55 14.54 7.165 2.69104 4.18314 25.81 1468.08 1020.238 14.85 14.84 7.167 2.69170 4.18399 25.82 1468.10 1020.244 15.15 15.14 7.167 2.69239 4.18495 25.82 1468.11 1020.251 15.45 15.44 7.169 2.69356 4.18653 25.83 1468.14 1020.260 15.75 15.74 7.171 2.69409 4.18718 25.84 1468.15 1020.265 16.05 16.04 7.173 2.69360 4.18615 25.83 1468.16 1020.261 16.35 16.34 7.174 2.69440 4.18722 25.84 1468.18 1020.268 16.65 16.64 7.179 2.69289 4.18428 25.82 1468.18 1020.253 16.95 16.94 7.186 2.69263 4.18288 25.81 1468.20 1020.247 17.25 17.24 7.193 2.69593 4.18716 25.84 1468.27 1020.271 17.55 17.54 7.195 2.69858 4.19104 25.87 1468.31 1020.293 17.85 17.84 7.198 2.70125 4.19476 25.89 1468.36 1020.314 18.15 18.14 7.206 2.70312 4.19657 25.91 1468.42 1020.325 18.45 18.44 7.211 2.70523 4.19927 25.93 1468.46 1020.341 18.75 18.74 7.213 2.70600 4.20016 25.93 1468.48 1020.347 19.05 19.04 7.214 2.70615 4.20023 25.93 1468.50 1020.348 19.35 19.34 7.217 2.70730 4.20168 25.94 1468.52 1020.357 19.65 19.64 7.219 2.70628 4.19987 25.93 1468.52 1020.349 19.95 19.93 7.217 2.70622 4.19994 25.93 1468.52 1020.351 20.21 20.20 7.217 2.70580 4.19940 25.93 1468.52 1020.349