*2019/08/26 15:30:31.41 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/02 17:50:56.000 END TIME : UTC 2017/03/02 17:51:12.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 85 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 25.45 2 Depth metres 0.15 25.41 3 Temperature 'deg C (ITS90)' 7.303 7.559 4 Conductivity S/m 2.75609 2.85708 5 Conductance:Specific S/m 4.266 4.38829 6 Salinity PSS-78 26.4 27.26 7 Speed:Sound m/s 1469.12 1471.59 8 Density kg/m^3 1020.616 1021.375 $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 : 299 LATITUDE : 49 17.30736 N ! (deg min) LONGITUDE : 123 5.18282 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 20:51:47 85 85 HDREDIT2 3.1.1 2017/12/13 11:33:17 ? ? CALIB 12.0 2019/08/26 15:30:31 85 85 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 20:51:47 -HEADER EDITS: 2017/12/13 11:33:17 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 15:30:31 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_20170302_175056 % Cast time (UTC),2017-03-02 17:50:56 % Cast time (local),2017-03-02 17:50:56 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.288456 % Start longitude,-123.0863803 % Start altitude,-7.8299999237060547 % Start GPS horizontal error(Meter),2.3199999332427979 % Start GPS vertical error(Meter),2.6600000858306885 % Start GPS number of satellites,6 % End latitude,49.2885489 % End longitude,-123.0864805 % End altitude,-23.020000457763672 % End GPS horizontal error(Meter),22.719999313354492 % End GPS vertical error(Meter),24.229999542236328 % End GPS number of satellites,5 % Cast duration (Seconds),130.4 % 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 7.303 2.75609 4.26600 26.40 1469.12 1020.616 0.45 0.45 7.305 2.76282 4.27611 26.47 1469.22 1020.672 0.75 0.75 7.308 2.76344 4.27674 26.47 1469.24 1020.676 1.05 1.05 7.311 2.76345 4.27629 26.47 1469.25 1020.675 1.35 1.35 7.317 2.76380 4.27614 26.47 1469.28 1020.676 1.65 1.65 7.323 2.76480 4.27686 26.48 1469.32 1020.681 1.95 1.95 7.329 2.76581 4.27764 26.48 1469.35 1020.686 2.25 2.25 7.329 2.76438 4.27540 26.46 1469.34 1020.675 2.55 2.55 7.326 2.76328 4.27412 26.46 1469.32 1020.670 2.85 2.85 7.325 2.76858 4.28244 26.51 1469.39 1020.716 3.15 3.15 7.328 2.76908 4.28277 26.52 1469.41 1020.719 3.45 3.45 7.331 2.76857 4.28155 26.51 1469.42 1020.713 3.75 3.75 7.330 2.76855 4.28171 26.51 1469.42 1020.716 4.05 4.04 7.329 2.76953 4.28331 26.52 1469.43 1020.725 4.35 4.34 7.328 2.76895 4.28264 26.51 1469.43 1020.723 4.65 4.64 7.327 2.76970 4.28390 26.52 1469.44 1020.731 4.95 4.94 7.329 2.76995 4.28398 26.52 1469.45 1020.733 5.25 5.24 7.334 2.76896 4.28177 26.51 1469.46 1020.722 5.55 5.54 7.336 2.77153 4.28551 26.53 1469.50 1020.744 5.85 5.84 7.337 2.77161 4.28553 26.53 1469.51 1020.745 6.15 6.14 7.341 2.77257 4.28649 26.54 1469.54 1020.751 6.45 6.44 7.344 2.77348 4.28745 26.55 1469.57 1020.758 6.75 6.74 7.345 2.77417 4.28834 26.55 1469.59 1020.764 7.05 7.04 7.346 2.77483 4.28931 26.56 1469.60 1020.770 7.35 7.34 7.348 2.77652 4.29166 26.58 1469.63 1020.784 7.65 7.64 7.353 2.77953 4.29565 26.60 1469.69 1020.807 7.95 7.94 7.359 2.77988 4.29534 26.60 1469.72 1020.806 8.25 8.24 7.363 2.77838 4.29247 26.58 1469.72 1020.792 8.55 8.54 7.367 2.78468 4.30175 26.65 1469.82 1020.843 8.85 8.84 7.379 2.78824 4.30570 26.68 1469.90 1020.865 9.15 9.14 7.384 2.78839 4.30517 26.67 1469.92 1020.864 9.45 9.44 7.388 2.78876 4.30525 26.67 1469.94 1020.865 9.75 9.74 7.389 2.78923 4.30577 26.68 1469.96 1020.869 10.05 10.04 7.389 2.78852 4.30470 26.67 1469.95 1020.865 10.35 10.34 7.390 2.78908 4.30548 26.68 1469.97 1020.870 10.65 10.64 7.392 2.78921 4.30537 26.68 1469.98 1020.871 10.95 10.94 7.393 2.78959 4.30589 26.68 1469.99 1020.875 11.25 11.23 7.392 2.78973 4.30626 26.68 1470.00 1020.878 11.55 11.53 7.394 2.78987 4.30619 26.68 1470.01 1020.879 11.85 11.83 7.398 2.79312 4.31063 26.71 1470.07 1020.904 12.15 12.13 7.413 2.80958 4.33399 26.87 1470.34 1021.031 12.45 12.43 7.444 2.81947 4.34514 26.95 1470.56 1021.091 12.75 12.73 7.462 2.82233 4.34706 26.97 1470.66 1021.102 13.05 13.03 7.477 2.82558 4.35015 26.99 1470.75 1021.120 13.35 13.33 7.489 2.82869 4.35331 27.02 1470.83 1021.138 13.65 13.63 7.493 2.83589 4.36379 27.09 1470.94 1021.196 13.95 13.93 7.493 2.83607 4.36411 27.09 1470.94 1021.199 14.25 14.23 7.500 2.83580 4.36273 27.08 1470.97 1021.192 14.55 14.53 7.503 2.83824 4.36607 27.10 1471.01 1021.211 14.85 14.83 7.506 2.83750 4.36452 27.09 1471.02 1021.204 15.15 15.13 7.518 2.83179 4.35417 27.02 1470.98 1021.150 15.45 15.43 7.524 2.84330 4.37108 27.14 1471.15 1021.242 15.75 15.73 7.525 2.84705 4.37667 27.18 1471.21 1021.273 16.05 16.03 7.530 2.84904 4.37907 27.20 1471.26 1021.287 16.35 16.33 7.535 2.85101 4.38139 27.21 1471.30 1021.301 16.65 16.62 7.536 2.85096 4.38122 27.21 1471.31 1021.301 16.95 16.93 7.537 2.85192 4.38255 27.22 1471.33 1021.310 17.25 17.22 7.540 2.85279 4.38358 27.23 1471.35 1021.317 17.55 17.52 7.542 2.85216 4.38230 27.22 1471.36 1021.311 17.85 17.82 7.542 2.85280 4.38328 27.23 1471.37 1021.317 18.15 18.12 7.544 2.85364 4.38428 27.23 1471.39 1021.324 18.45 18.42 7.544 2.85336 4.38385 27.23 1471.39 1021.323 18.75 18.72 7.546 2.85486 4.38586 27.24 1471.42 1021.335 19.05 19.02 7.549 2.85499 4.38568 27.24 1471.44 1021.335 19.35 19.32 7.545 2.85442 4.38535 27.24 1471.42 1021.335 19.65 19.62 7.541 2.85429 4.38562 27.24 1471.41 1021.338 19.95 19.92 7.539 2.85273 4.38353 27.23 1471.39 1021.328 20.25 20.22 7.539 2.85249 4.38320 27.22 1471.39 1021.327 20.55 20.52 7.539 2.85256 4.38326 27.22 1471.40 1021.329 20.85 20.82 7.540 2.85292 4.38372 27.23 1471.41 1021.333 21.15 21.12 7.539 2.85220 4.38279 27.22 1471.40 1021.329 21.45 21.42 7.537 2.85142 4.38182 27.21 1471.39 1021.325 21.75 21.71 7.537 2.85202 4.38277 27.22 1471.40 1021.332 22.05 22.02 7.538 2.85179 4.38225 27.22 1471.41 1021.330 22.35 22.31 7.541 2.85257 4.38298 27.22 1471.44 1021.335 22.65 22.61 7.544 2.85354 4.38409 27.23 1471.46 1021.342 22.95 22.91 7.546 2.85407 4.38460 27.23 1471.48 1021.346 23.25 23.21 7.552 2.85492 4.38519 27.24 1471.51 1021.351 23.55 23.51 7.551 2.85428 4.38430 27.23 1471.51 1021.347 23.85 23.81 7.550 2.85455 4.38493 27.23 1471.51 1021.352 24.15 24.11 7.551 2.85392 4.38383 27.23 1471.51 1021.347 24.45 24.41 7.550 2.85344 4.38316 27.22 1471.51 1021.345 24.75 24.71 7.548 2.85515 4.38609 27.24 1471.53 1021.362 25.05 25.01 7.554 2.85708 4.38829 27.26 1471.57 1021.375 25.45 25.41 7.559 2.85680 4.38716 27.25 1471.59 1021.371