*2019/08/26 15:30:38.16 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 15:18:57.000 END TIME : UTC 2017/06/23 15:19:08.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 56 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.6 2 Depth metres 0.15 16.64 3 Temperature 'deg C (ITS90)' 11.393 13.498 4 Conductivity S/m 2.35614 2.79837 5 Conductance:Specific S/m 3.06177 3.84465 6 Salinity PSS-78 18.76 23.94 7 Speed:Sound m/s 1481.73 1483.12 8 Density kg/m^3 1013.768 1018.196 $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 : 564 LATITUDE : 49 17.53402 N ! (deg min) LONGITUDE : 123 0.40585 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 01:14:28 56 56 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:38 56 56 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:14:28 -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_151857 % Cast time (UTC),2017-06-23 15:18:57 % Cast time (local),2017-06-23 15:18:57 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2922336 % Start longitude,-123.0067641 % Start altitude,-22.649999618530273 % Start GPS horizontal error(Meter),2.1099998950958252 % Start GPS vertical error(Meter),2.9700000286102295 % Start GPS number of satellites,8 % End latitude,49.29219 % End longitude,-123.0061368 % End altitude,-7.03000020980835 % End GPS horizontal error(Meter),4.5 % End GPS vertical error(Meter),8.130000114440918 % End GPS number of satellites,5 % Cast duration (Seconds),112 % 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 13.498 2.35745 3.06177 18.76 1482.76 1013.768 0.45 0.45 13.406 2.35614 3.06743 18.80 1482.49 1013.811 0.75 0.75 13.212 2.38930 3.12633 19.18 1482.28 1014.143 1.05 1.06 13.079 2.46154 3.23212 19.89 1482.65 1014.711 1.35 1.36 13.055 2.50432 3.29040 20.28 1483.03 1015.019 1.65 1.66 13.046 2.50873 3.29698 20.32 1483.06 1015.055 1.95 1.96 13.007 2.51988 3.31499 20.44 1483.07 1015.156 2.25 2.26 13.008 2.52445 3.32099 20.48 1483.12 1015.188 2.55 2.56 12.972 2.52964 3.33096 20.55 1483.08 1015.246 2.85 2.86 12.943 2.53616 3.34209 20.62 1483.07 1015.309 3.15 3.16 12.939 2.53370 3.33922 20.60 1483.04 1015.296 3.45 3.46 12.929 2.53320 3.33943 20.61 1483.01 1015.300 3.75 3.77 12.928 2.53734 3.34491 20.64 1483.06 1015.330 4.05 4.07 12.918 2.54566 3.35679 20.72 1483.12 1015.395 4.35 4.37 12.861 2.54792 3.36480 20.77 1482.99 1015.445 4.65 4.67 12.828 2.55403 3.37587 20.85 1482.96 1015.509 4.95 4.97 12.793 2.56030 3.38731 20.92 1482.93 1015.574 5.25 5.27 12.765 2.56321 3.39362 20.96 1482.89 1015.612 5.55 5.57 12.733 2.56922 3.40450 21.03 1482.87 1015.674 5.85 5.88 12.693 2.57449 3.41504 21.10 1482.82 1015.736 6.15 6.18 12.654 2.57959 3.42536 21.17 1482.76 1015.796 6.45 6.48 12.627 2.59003 3.44173 21.28 1482.80 1015.886 6.75 6.78 12.602 2.60433 3.46306 21.42 1482.89 1016.003 7.05 7.08 12.546 2.61255 3.47917 21.53 1482.82 1016.095 7.35 7.38 12.494 2.61820 3.49148 21.61 1482.74 1016.167 7.65 7.68 12.461 2.61997 3.49690 21.64 1482.67 1016.201 7.95 7.98 12.430 2.62113 3.50133 21.67 1482.60 1016.230 8.25 8.28 12.399 2.62964 3.51561 21.77 1482.61 1016.310 8.55 8.58 12.365 2.63936 3.53181 21.88 1482.62 1016.400 8.85 8.88 12.329 2.64493 3.54275 21.95 1482.59 1016.463 9.15 9.19 12.292 2.64957 3.55251 22.01 1482.54 1016.520 9.45 9.49 12.247 2.65216 3.56022 22.06 1482.44 1016.567 9.75 9.79 12.218 2.65708 3.56960 22.12 1482.42 1016.621 10.05 10.09 12.171 2.65989 3.57791 22.18 1482.32 1016.672 10.35 10.39 12.103 2.66973 3.59769 22.31 1482.24 1016.785 10.65 10.69 12.047 2.68625 3.62547 22.49 1482.27 1016.939 10.95 10.99 11.988 2.69297 3.64036 22.59 1482.18 1017.026 11.25 11.29 11.902 2.72057 3.68625 22.90 1482.24 1017.279 11.55 11.59 11.771 2.74035 3.72622 23.16 1482.10 1017.506 11.85 11.89 11.675 2.76227 3.76591 23.43 1482.07 1017.728 12.15 12.19 11.605 2.77078 3.78469 23.55 1481.98 1017.836 12.45 12.49 11.558 2.77802 3.79945 23.65 1481.93 1017.921 12.75 12.79 11.510 2.78032 3.80764 23.70 1481.83 1017.971 13.05 13.09 11.480 2.78134 3.81219 23.73 1481.76 1017.999 13.35 13.39 11.460 2.78291 3.81634 23.75 1481.73 1018.024 13.65 13.69 11.448 2.78683 3.82305 23.80 1481.74 1018.063 13.95 13.99 11.440 2.78989 3.82811 23.83 1481.76 1018.092 14.25 14.29 11.431 2.79184 3.83172 23.86 1481.76 1018.113 14.55 14.60 11.420 2.79238 3.83358 23.87 1481.74 1018.125 14.85 14.90 11.419 2.79261 3.83402 23.87 1481.74 1018.129 15.15 15.20 11.423 2.79457 3.83626 23.89 1481.78 1018.142 15.45 15.50 11.417 2.79544 3.83808 23.90 1481.78 1018.153 15.75 15.80 11.410 2.79405 3.83687 23.89 1481.75 1018.149 16.05 16.10 11.406 2.79565 3.83953 23.91 1481.76 1018.165 16.35 16.40 11.399 2.79732 3.84259 23.93 1481.76 1018.183 16.60 16.64 11.393 2.79837 3.84465 23.94 1481.76 1018.196