*2019/08/26 15:30:29.08 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/02/28 17:22:54.000 END TIME : UTC 2017/02/28 17:23:11.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 88 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 26.26 2 Depth metres 0.15 26.21 3 Temperature 'deg C (ITS90)' 7.566 7.708 4 Conductivity S/m 2.83423 2.89425 5 Conductance:Specific S/m 4.3483 4.424839 6 Salinity PSS-78 27 27.53 7 Speed:Sound m/s 1470.92 1472.53 8 Density kg/m^3 1021.054 1021.573 $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 : 263 LATITUDE : 49 18.17592 N ! (deg min) LONGITUDE : 123 4.97584 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 20:17:01 88 88 HDREDIT2 3.1.1 2017/12/13 11:33:16 ? ? CALIB 12.0 2019/08/26 15:30:29 88 88 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:17:01 -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 15:30:29 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_172254 % Cast time (UTC),2017-02-28 17:22:54 % Cast time (local),2017-02-28 17:22:54 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.302932 % Start longitude,-123.0829306 % Start altitude,-45.599998474121094 % Start GPS horizontal error(Meter),47.310001373291016 % Start GPS vertical error(Meter),41.4900016784668 % Start GPS number of satellites,5 % End latitude,49.3030949 % End longitude,-123.0829128 % End altitude,-16.690000534057617 % End GPS horizontal error(Meter),12.760000228881836 % End GPS vertical error(Meter),9.869999885559082 % End GPS number of satellites,6 % Cast duration (Seconds),81.4 % 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 7.566 2.83424 4.35148 27.02 1470.92 1021.070 0.45 0.45 7.581 2.83423 4.34951 27.01 1470.97 1021.060 0.75 0.75 7.618 2.83668 4.34830 27.00 1471.11 1021.054 1.05 1.05 7.632 2.84681 4.36195 27.10 1471.29 1021.129 1.35 1.35 7.632 2.85883 4.38040 27.23 1471.45 1021.229 1.65 1.65 7.630 2.86009 4.38260 27.24 1471.47 1021.242 1.95 1.95 7.624 2.85806 4.38026 27.22 1471.43 1021.231 2.25 2.25 7.621 2.85728 4.37953 27.22 1471.41 1021.229 2.55 2.55 7.622 2.85938 4.38262 27.24 1471.45 1021.246 2.85 2.85 7.625 2.86233 4.38676 27.27 1471.50 1021.270 3.15 3.14 7.627 2.86381 4.38867 27.28 1471.53 1021.281 3.45 3.44 7.630 2.86418 4.38886 27.28 1471.55 1021.284 3.75 3.74 7.632 2.86482 4.38953 27.29 1471.57 1021.289 4.05 4.04 7.633 2.86371 4.38772 27.27 1471.56 1021.280 4.35 4.34 7.633 2.86371 4.38775 27.27 1471.57 1021.282 4.65 4.64 7.633 2.86413 4.38833 27.28 1471.58 1021.286 4.95 4.94 7.634 2.86401 4.38810 27.28 1471.58 1021.286 5.25 5.24 7.635 2.86427 4.38838 27.28 1471.59 1021.289 5.55 5.54 7.636 2.86504 4.38942 27.29 1471.61 1021.296 5.85 5.84 7.637 2.86609 4.39081 27.30 1471.63 1021.304 6.15 6.14 7.638 2.86639 4.39125 27.30 1471.64 1021.308 6.45 6.44 7.638 2.86701 4.39210 27.30 1471.66 1021.314 6.75 6.74 7.640 2.86736 4.39242 27.31 1471.67 1021.317 7.05 7.04 7.641 2.86776 4.39288 27.31 1471.68 1021.321 7.35 7.34 7.641 2.86813 4.39338 27.31 1471.69 1021.325 7.65 7.64 7.642 2.86824 4.39350 27.31 1471.70 1021.326 7.95 7.93 7.642 2.86764 4.39259 27.31 1471.70 1021.323 8.25 8.23 7.643 2.86855 4.39381 27.32 1471.72 1021.331 8.55 8.53 7.645 2.86829 4.39321 27.31 1471.72 1021.329 8.85 8.83 7.646 2.86926 4.39454 27.32 1471.74 1021.337 9.15 9.13 7.647 2.86813 4.39262 27.31 1471.74 1021.328 9.45 9.43 7.648 2.86970 4.39494 27.32 1471.77 1021.342 9.75 9.73 7.646 2.86999 4.39559 27.33 1471.77 1021.347 10.05 10.03 7.642 2.87045 4.39691 27.34 1471.77 1021.355 10.35 10.33 7.645 2.87087 4.39709 27.34 1471.79 1021.357 10.65 10.63 7.647 2.87038 4.39603 27.33 1471.79 1021.353 10.95 10.93 7.649 2.87075 4.39641 27.33 1471.81 1021.356 11.25 11.23 7.650 2.87073 4.39619 27.33 1471.82 1021.356 11.55 11.53 7.651 2.87054 4.39582 27.33 1471.82 1021.356 11.85 11.83 7.650 2.86988 4.39490 27.32 1471.81 1021.352 12.15 12.13 7.646 2.87017 4.39590 27.33 1471.81 1021.359 12.45 12.43 7.651 2.87179 4.39774 27.34 1471.85 1021.370 12.75 12.73 7.655 2.87338 4.39966 27.36 1471.89 1021.381 13.05 13.03 7.657 2.87325 4.39920 27.35 1471.89 1021.380 13.35 13.32 7.659 2.87357 4.39935 27.35 1471.91 1021.382 13.65 13.62 7.660 2.87342 4.39902 27.35 1471.92 1021.382 13.95 13.92 7.656 2.87306 4.39900 27.35 1471.90 1021.383 14.25 14.22 7.654 2.87342 4.39975 27.36 1471.91 1021.388 14.55 14.52 7.656 2.87329 4.39929 27.35 1471.92 1021.387 14.85 14.82 7.660 2.87400 4.39990 27.36 1471.94 1021.392 15.15 15.12 7.662 2.87435 4.40016 27.36 1471.96 1021.394 15.45 15.42 7.662 2.87388 4.39943 27.35 1471.96 1021.392 15.75 15.72 7.662 2.87436 4.40012 27.36 1471.97 1021.397 16.05 16.02 7.661 2.87476 4.40093 27.36 1471.97 1021.402 16.35 16.32 7.660 2.87455 4.40076 27.36 1471.97 1021.403 16.65 16.62 7.659 2.87392 4.39995 27.36 1471.97 1021.400 16.95 16.92 7.659 2.87401 4.40009 27.36 1471.97 1021.402 17.25 17.22 7.660 2.87356 4.39915 27.35 1471.98 1021.398 17.55 17.52 7.661 2.87421 4.40002 27.36 1471.99 1021.404 17.85 17.82 7.661 2.87384 4.39956 27.35 1471.99 1021.403 18.15 18.11 7.658 2.87358 4.39950 27.35 1471.98 1021.404 18.45 18.41 7.661 2.87471 4.40083 27.36 1472.01 1021.412 18.75 18.71 7.664 2.87478 4.40052 27.36 1472.03 1021.412 19.05 19.01 7.666 2.87604 4.40225 27.37 1472.05 1021.422 19.35 19.31 7.665 2.87518 4.40094 27.36 1472.05 1021.416 19.65 19.61 7.661 2.87429 4.40024 27.36 1472.02 1021.414 19.95 19.91 7.660 2.87426 4.40022 27.36 1472.03 1021.415 20.25 20.21 7.663 2.87447 4.40019 27.36 1472.04 1021.416 20.55 20.51 7.666 2.87510 4.40080 27.36 1472.06 1021.421 20.85 20.81 7.667 2.87508 4.40064 27.36 1472.07 1021.421 21.15 21.11 7.667 2.87466 4.39998 27.36 1472.07 1021.419 21.45 21.41 7.666 2.87471 4.40019 27.36 1472.07 1021.421 21.75 21.71 7.666 2.87517 4.40084 27.36 1472.09 1021.426 22.05 22.01 7.666 2.87456 4.39989 27.36 1472.08 1021.422 22.35 22.31 7.666 2.87473 4.40024 27.36 1472.09 1021.426 22.65 22.61 7.665 2.87490 4.40065 27.36 1472.09 1021.429 22.95 22.91 7.663 2.87482 4.40071 27.36 1472.09 1021.431 23.25 23.20 7.664 2.87451 4.40010 27.36 1472.10 1021.429 23.55 23.50 7.665 2.87458 4.40009 27.36 1472.10 1021.430 23.85 23.80 7.665 2.87454 4.39997 27.35 1472.11 1021.431 24.15 24.10 7.666 2.87551 4.40136 27.36 1472.13 1021.439 24.45 24.40 7.666 2.87631 4.40265 27.37 1472.14 1021.448 24.75 24.70 7.668 2.87734 4.40394 27.38 1472.17 1021.456 25.05 25.00 7.673 2.87787 4.40406 27.38 1472.19 1021.458 25.35 25.30 7.674 2.87833 4.40460 27.39 1472.21 1021.462 25.65 25.60 7.671 2.88009 4.40773 27.41 1472.22 1021.480 25.95 25.90 7.687 2.89267 4.42484 27.53 1472.44 1021.573 26.26 26.21 7.708 2.89425 4.42435 27.53 1472.53 1021.571