*2019/08/26 15:30:28.91 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 17:02:15.000 END TIME : UTC 2017/02/28 17:02:25.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 55 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 16.48 2 Depth metres 0.15 16.44 3 Temperature 'deg C (ITS90)' 7.59 7.788 4 Conductivity S/m 2.84611 2.92165 5 Conductance:Specific S/m 4.36648 4.45534 6 Salinity PSS-78 27.12 27.75 7 Speed:Sound m/s 1471.14 1472.95 8 Density kg/m^3 1021.15 1021.693 $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 : 260 LATITUDE : 49 18.32342 N ! (deg min) LONGITUDE : 123 6.02033 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 20:14:20 55 55 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:28 55 55 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:14:19 -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_170215 % Cast time (UTC),2017-02-28 17:02:15 % Cast time (local),2017-02-28 17:02:15 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3053904 % Start longitude,-123.1003388 % Start altitude,-23.840000152587891 % Start GPS horizontal error(Meter),27.950000762939453 % Start GPS vertical error(Meter),25.020000457763672 % Start GPS number of satellites,5 % End latitude,49.3060289 % End longitude,-123.1010241 % End altitude,3.9200000762939453 % End GPS horizontal error(Meter),25.3700008392334 % End GPS vertical error(Meter),25 % End GPS number of satellites,6 % Cast duration (Seconds),107.6 % 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 7.590 2.84611 4.36648 27.12 1471.14 1021.150 0.45 0.45 7.599 2.84766 4.36772 27.13 1471.19 1021.158 0.75 0.75 7.610 2.84865 4.36778 27.14 1471.24 1021.159 1.05 1.05 7.634 2.85353 4.37200 27.17 1471.38 1021.183 1.35 1.35 7.656 2.86213 4.38231 27.24 1471.56 1021.239 1.65 1.65 7.665 2.87249 4.39695 27.34 1471.73 1021.319 1.95 1.95 7.667 2.87563 4.40137 27.37 1471.78 1021.344 2.25 2.25 7.679 2.88051 4.40733 27.41 1471.88 1021.377 2.55 2.54 7.691 2.88440 4.41162 27.45 1471.97 1021.401 2.85 2.85 7.698 2.88826 4.41656 27.48 1472.05 1021.429 3.15 3.14 7.707 2.89331 4.42306 27.53 1472.15 1021.465 3.45 3.44 7.715 2.89636 4.42660 27.55 1472.21 1021.485 3.75 3.74 7.722 2.89855 4.42904 27.57 1472.27 1021.499 4.05 4.04 7.726 2.90000 4.43067 27.58 1472.30 1021.509 4.35 4.34 7.728 2.90098 4.43194 27.59 1472.33 1021.517 4.65 4.64 7.730 2.90144 4.43241 27.59 1472.34 1021.521 4.95 4.94 7.732 2.90214 4.43314 27.60 1472.36 1021.526 5.25 5.24 7.734 2.90277 4.43392 27.60 1472.38 1021.532 5.55 5.54 7.733 2.90291 4.43417 27.61 1472.38 1021.534 5.85 5.84 7.734 2.90324 4.43458 27.61 1472.40 1021.538 6.15 6.14 7.734 2.90236 4.43329 27.60 1472.39 1021.532 6.45 6.44 7.734 2.90273 4.43377 27.60 1472.40 1021.536 6.75 6.74 7.735 2.90294 4.43398 27.60 1472.41 1021.538 7.05 7.04 7.735 2.90276 4.43373 27.60 1472.41 1021.538 7.35 7.33 7.736 2.90369 4.43502 27.61 1472.43 1021.547 7.65 7.63 7.736 2.90384 4.43522 27.61 1472.44 1021.549 7.95 7.93 7.737 2.90419 4.43567 27.62 1472.45 1021.553 8.25 8.23 7.737 2.90422 4.43574 27.62 1472.45 1021.554 8.55 8.53 7.739 2.90482 4.43639 27.62 1472.47 1021.559 8.85 8.83 7.740 2.90575 4.43763 27.63 1472.49 1021.567 9.15 9.13 7.746 2.90777 4.43995 27.65 1472.54 1021.581 9.45 9.43 7.751 2.90934 4.44164 27.66 1472.58 1021.591 9.75 9.73 7.756 2.91150 4.44423 27.68 1472.63 1021.606 10.05 10.03 7.757 2.91311 4.44653 27.69 1472.66 1021.620 10.35 10.33 7.758 2.91394 4.44768 27.70 1472.68 1021.627 10.65 10.63 7.759 2.91408 4.44770 27.70 1472.69 1021.629 10.95 10.93 7.762 2.91513 4.44895 27.71 1472.71 1021.637 11.25 11.23 7.763 2.91481 4.44831 27.70 1472.72 1021.634 11.55 11.53 7.764 2.91546 4.44917 27.71 1472.73 1021.640 11.85 11.82 7.766 2.91680 4.45092 27.72 1472.76 1021.651 12.15 12.12 7.768 2.91660 4.45042 27.72 1472.77 1021.649 12.45 12.42 7.769 2.91719 4.45109 27.72 1472.78 1021.654 12.75 12.72 7.770 2.91746 4.45149 27.73 1472.79 1021.658 13.05 13.02 7.770 2.91701 4.45074 27.72 1472.79 1021.655 13.35 13.32 7.770 2.91773 4.45185 27.73 1472.81 1021.662 13.65 13.62 7.773 2.91803 4.45192 27.73 1472.82 1021.664 13.95 13.92 7.774 2.91787 4.45151 27.73 1472.83 1021.663 14.25 14.22 7.776 2.91847 4.45211 27.73 1472.85 1021.667 14.55 14.52 7.777 2.91880 4.45249 27.73 1472.86 1021.671 14.85 14.82 7.776 2.91931 4.45342 27.74 1472.87 1021.677 15.15 15.12 7.777 2.91953 4.45362 27.74 1472.88 1021.679 15.45 15.42 7.781 2.92045 4.45455 27.75 1472.91 1021.686 15.75 15.72 7.785 2.92139 4.45534 27.75 1472.94 1021.691 16.05 16.02 7.788 2.92165 4.45533 27.75 1472.95 1021.692 16.48 16.44 7.786 2.92132 4.45516 27.75 1472.95 1021.693