*2019/08/26 15:30:34.10 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 23:52:46.000 END TIME : UTC 2017/03/03 23:52:57.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 58 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.38 2 Depth metres 0.15 17.35 3 Temperature 'deg C (ITS90)' 7.437 7.459 4 Conductivity S/m 2.76384 2.78696 5 Conductance:Specific S/m 4.25871 4.29395 6 Salinity PSS-78 26.37 26.6 7 Speed:Sound m/s 1469.62 1470.24 8 Density kg/m^3 1020.584 1020.838 $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 : 341 LATITUDE : 49 18.28987 N ! (deg min) LONGITUDE : 123 6.93911 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 21:33:20 58 58 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:34 58 58 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:33:19 -HEADER EDITS: 2017/12/13 11:33:19 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 15:30:34 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_20170303_235246 % Cast time (UTC),2017-03-03 23:52:46 % Cast time (local),2017-03-03 23:52:46 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3048311 % Start longitude,-123.1156518 % Start altitude,-20.469999313354492 % Start GPS horizontal error(Meter),1.3899999856948853 % Start GPS vertical error(Meter),1.4500000476837158 % Start GPS number of satellites,9 % End latitude,49.3049122 % End longitude,-123.1159533 % End altitude,-32.290000915527344 % End GPS horizontal error(Meter),7 % End GPS vertical error(Meter),9.8100004196167 % End GPS number of satellites,7 % Cast duration (Seconds),62.6 % 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 7.437 2.76384 4.26035 26.38 1469.62 1020.584 0.45 0.45 7.446 2.76531 4.26141 26.39 1469.67 1020.591 0.75 0.75 7.442 2.76455 4.26082 26.38 1469.65 1020.589 1.05 1.05 7.445 2.76558 4.26198 26.39 1469.68 1020.597 1.35 1.35 7.448 2.76549 4.26144 26.39 1469.69 1020.595 1.65 1.65 7.451 2.76512 4.26040 26.38 1469.70 1020.591 1.95 1.95 7.456 2.76514 4.25979 26.38 1469.72 1020.589 2.25 2.25 7.457 2.76454 4.25871 26.37 1469.72 1020.584 2.55 2.55 7.454 2.76465 4.25935 26.37 1469.72 1020.589 2.85 2.85 7.452 2.76477 4.25979 26.38 1469.72 1020.592 3.15 3.15 7.449 2.76511 4.26066 26.38 1469.72 1020.598 3.45 3.45 7.448 2.76550 4.26145 26.39 1469.72 1020.604 3.75 3.75 7.447 2.76545 4.26145 26.39 1469.73 1020.605 4.05 4.04 7.447 2.76530 4.26130 26.38 1469.73 1020.606 4.35 4.34 7.446 2.76567 4.26197 26.39 1469.74 1020.611 4.65 4.64 7.446 2.76580 4.26221 26.39 1469.74 1020.613 4.95 4.94 7.445 2.76680 4.26377 26.40 1469.76 1020.623 5.25 5.24 7.445 2.76706 4.26422 26.40 1469.77 1020.627 5.55 5.54 7.445 2.76656 4.26340 26.40 1469.77 1020.624 5.85 5.84 7.445 2.76448 4.26032 26.38 1469.74 1020.608 6.15 6.14 7.444 2.76559 4.26212 26.39 1469.76 1020.619 6.45 6.44 7.443 2.76655 4.26377 26.40 1469.77 1020.629 6.75 6.74 7.443 2.76892 4.26743 26.43 1469.81 1020.650 7.05 7.04 7.441 2.76854 4.26703 26.42 1469.80 1020.650 7.35 7.34 7.442 2.77006 4.26927 26.44 1469.83 1020.663 7.65 7.64 7.443 2.77096 4.27049 26.45 1469.85 1020.671 7.95 7.94 7.444 2.77289 4.27328 26.46 1469.88 1020.687 8.25 8.24 7.445 2.77269 4.27288 26.46 1469.89 1020.686 8.55 8.54 7.446 2.77299 4.27320 26.46 1469.90 1020.689 8.85 8.84 7.445 2.77298 4.27334 26.46 1469.90 1020.691 9.15 9.14 7.445 2.77337 4.27400 26.47 1469.91 1020.696 9.45 9.44 7.444 2.77289 4.27340 26.46 1469.90 1020.694 9.75 9.74 7.443 2.77359 4.27454 26.47 1469.92 1020.701 10.05 10.04 7.444 2.77339 4.27413 26.47 1469.92 1020.700 10.35 10.34 7.446 2.77360 4.27420 26.47 1469.93 1020.702 10.65 10.64 7.447 2.77330 4.27360 26.47 1469.94 1020.700 10.95 10.94 7.447 2.77327 4.27348 26.46 1469.94 1020.701 11.25 11.24 7.447 2.77365 4.27410 26.47 1469.95 1020.705 11.55 11.54 7.445 2.77387 4.27466 26.47 1469.95 1020.710 11.85 11.84 7.443 2.77386 4.27495 26.47 1469.95 1020.713 12.15 12.13 7.444 2.77407 4.27516 26.48 1469.96 1020.715 12.45 12.43 7.444 2.77418 4.27532 26.48 1469.97 1020.717 12.75 12.73 7.446 2.77542 4.27702 26.49 1470.00 1020.728 13.05 13.03 7.447 2.77646 4.27848 26.50 1470.02 1020.737 13.35 13.33 7.447 2.77921 4.28264 26.53 1470.06 1020.760 13.65 13.63 7.446 2.78037 4.28454 26.54 1470.08 1020.772 13.95 13.93 7.447 2.78111 4.28564 26.55 1470.09 1020.779 14.25 14.23 7.448 2.78110 4.28553 26.55 1470.10 1020.780 14.55 14.53 7.449 2.78078 4.28491 26.54 1470.10 1020.778 14.85 14.83 7.450 2.78139 4.28561 26.55 1470.12 1020.783 15.15 15.13 7.451 2.78254 4.28733 26.56 1470.14 1020.793 15.45 15.43 7.451 2.78255 4.28735 26.56 1470.15 1020.794 15.75 15.73 7.453 2.78269 4.28724 26.56 1470.16 1020.795 16.05 16.03 7.456 2.78253 4.28664 26.55 1470.17 1020.793 16.35 16.33 7.459 2.78290 4.28681 26.55 1470.19 1020.795 16.65 16.63 7.458 2.78452 4.28945 26.57 1470.21 1020.811 16.95 16.93 7.454 2.78592 4.29210 26.59 1470.22 1020.826 17.38 17.35 7.452 2.78696 4.29395 26.60 1470.24 1020.838