*2019/08/26 15:30:28.63 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 16:31:52.000 END TIME : UTC 2017/02/28 16:32:03.800 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 17.91 2 Depth metres 0.15 17.88 3 Temperature 'deg C (ITS90)' 7.595 7.728 4 Conductivity S/m 2.80097 2.88335 5 Conductance:Specific S/m 4.29648 4.40499 6 Salinity PSS-78 26.65 27.4 7 Speed:Sound m/s 1470.57 1472.31 8 Density kg/m^3 1020.774 1021.431 $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 : 256 LATITUDE : 49 17.39791 N ! (deg min) LONGITUDE : 123 6.74814 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 20:11:19 60 60 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:28 60 60 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:11:19 -HEADER EDITS: 2017/12/13 11:33:16 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 15:30:28 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_20170228_163152 % Cast time (UTC),2017-02-28 16:31:52 % Cast time (local),2017-02-28 16:31:52 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2899651 % Start longitude,-123.112469 % Start altitude,-7.5999999046325684 % Start GPS horizontal error(Meter),1.8400000333786011 % Start GPS vertical error(Meter),2.3199999332427979 % Start GPS number of satellites,9 % End latitude,49.2901331 % End longitude,-123.1127845 % End altitude,-11.420000076293945 % End GPS horizontal error(Meter),12.739999771118164 % End GPS vertical error(Meter),18.079999923706055 % End GPS number of satellites,6 % Cast duration (Seconds),112.2 % 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 7.596 2.80097 4.29648 26.65 1470.57 1020.774 0.45 0.45 7.608 2.81141 4.31087 26.75 1470.75 1020.853 0.75 0.75 7.614 2.81485 4.31544 26.78 1470.82 1020.878 1.05 1.05 7.612 2.81991 4.32341 26.83 1470.88 1020.922 1.35 1.35 7.607 2.82072 4.32527 26.84 1470.88 1020.934 1.65 1.65 7.599 2.82049 4.32605 26.85 1470.86 1020.939 1.95 1.95 7.595 2.82109 4.32749 26.86 1470.86 1020.948 2.25 2.25 7.599 2.82197 4.32825 26.86 1470.89 1020.954 2.55 2.55 7.601 2.82221 4.32840 26.86 1470.90 1020.956 2.85 2.85 7.604 2.82393 4.33060 26.88 1470.94 1020.969 3.15 3.15 7.607 2.82531 4.33243 26.89 1470.97 1020.980 3.45 3.44 7.605 2.82590 4.33348 26.90 1470.98 1020.987 3.75 3.74 7.609 2.82658 4.33401 26.90 1471.00 1020.991 4.05 4.04 7.617 2.82751 4.33435 26.91 1471.04 1020.994 4.35 4.34 7.622 2.82861 4.33540 26.91 1471.08 1021.001 4.65 4.64 7.627 2.83008 4.33706 26.93 1471.11 1021.011 4.95 4.94 7.629 2.83091 4.33799 26.93 1471.14 1021.017 5.25 5.24 7.631 2.83137 4.33848 26.94 1471.15 1021.021 5.55 5.54 7.634 2.83265 4.34005 26.95 1471.18 1021.031 5.85 5.84 7.639 2.83399 4.34138 26.96 1471.22 1021.039 6.15 6.14 7.646 2.83716 4.34533 26.98 1471.29 1021.061 6.45 6.44 7.654 2.84003 4.34863 27.01 1471.35 1021.080 6.75 6.74 7.658 2.84168 4.35066 27.02 1471.39 1021.092 7.05 7.04 7.661 2.84312 4.35252 27.04 1471.42 1021.103 7.35 7.34 7.660 2.84497 4.35543 27.05 1471.45 1021.120 7.65 7.64 7.665 2.84722 4.35825 27.07 1471.49 1021.137 7.95 7.94 7.670 2.84902 4.36027 27.09 1471.54 1021.149 8.25 8.24 7.675 2.84974 4.36072 27.09 1471.57 1021.152 8.55 8.54 7.678 2.85084 4.36201 27.10 1471.60 1021.160 8.85 8.84 7.679 2.85103 4.36222 27.10 1471.61 1021.163 9.15 9.13 7.676 2.85029 4.36146 27.10 1471.59 1021.160 9.45 9.44 7.673 2.85274 4.36559 27.13 1471.62 1021.184 9.75 9.73 7.677 2.85367 4.36643 27.13 1471.65 1021.189 10.05 10.03 7.680 2.85570 4.36916 27.15 1471.69 1021.205 10.35 10.33 7.683 2.85587 4.36911 27.15 1471.70 1021.206 10.65 10.63 7.684 2.85743 4.37134 27.17 1471.73 1021.220 10.95 10.93 7.682 2.85843 4.37305 27.18 1471.74 1021.230 11.25 11.23 7.675 2.86009 4.37662 27.20 1471.75 1021.251 11.55 11.53 7.673 2.86174 4.37933 27.22 1471.77 1021.267 11.85 11.83 7.677 2.86257 4.38010 27.23 1471.80 1021.272 12.15 12.13 7.681 2.86382 4.38144 27.23 1471.83 1021.280 12.45 12.43 7.684 2.86500 4.38291 27.25 1471.86 1021.289 12.75 12.73 7.684 2.86578 4.38409 27.25 1471.87 1021.297 13.05 13.03 7.679 2.86700 4.38659 27.27 1471.88 1021.312 13.35 13.33 7.682 2.86788 4.38749 27.27 1471.91 1021.318 13.65 13.63 7.688 2.86856 4.38780 27.28 1471.93 1021.321 13.95 13.93 7.695 2.86987 4.38882 27.29 1471.98 1021.327 14.25 14.23 7.701 2.87063 4.38922 27.29 1472.01 1021.331 14.55 14.53 7.704 2.87229 4.39139 27.30 1472.04 1021.344 14.85 14.82 7.705 2.87474 4.39496 27.33 1472.08 1021.364 15.15 15.12 7.710 2.87816 4.39947 27.36 1472.15 1021.390 15.45 15.42 7.718 2.87897 4.39969 27.36 1472.19 1021.392 15.75 15.72 7.722 2.87967 4.40013 27.37 1472.21 1021.395 16.05 16.02 7.724 2.87830 4.39781 27.35 1472.21 1021.384 16.35 16.32 7.722 2.87827 4.39804 27.35 1472.20 1021.387 16.65 16.62 7.708 2.87683 4.39774 27.35 1472.15 1021.387 16.95 16.92 7.699 2.87938 4.40280 27.38 1472.16 1021.415 17.25 17.22 7.713 2.88171 4.40457 27.39 1472.23 1021.426 17.55 17.52 7.723 2.88249 4.40442 27.39 1472.28 1021.426 17.91 17.88 7.728 2.88335 4.40499 27.40 1472.31 1021.431