*2019/08/26 15:30:33.99 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 19:05:45.000 END TIME : UTC 2017/03/03 19:05:57.800 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 65 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 19.27 2 Depth metres 0.15 19.24 3 Temperature 'deg C (ITS90)' 7.275 7.776 4 Conductivity S/m 2.70653 2.92282 5 Conductance:Specific S/m 4.19295 4.45882 6 Salinity PSS-78 25.9 27.77 7 Speed:Sound m/s 1468.38 1472.98 8 Density kg/m^3 1020.227 1021.725 $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 : 339 LATITUDE : 49 17.73266 N ! (deg min) LONGITUDE : 123 6.51492 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 21:31:17 65 65 HDREDIT2 3.1.1 2017/12/13 11:33:19 ? ? CALIB 12.0 2019/08/26 15:30:33 65 65 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:31:16 -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 15:30:33 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_190545 % Cast time (UTC),2017-03-03 19:05:45 % Cast time (local),2017-03-03 19:05:45 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2955443 % Start longitude,-123.108582 % Start altitude,-21.719999313354492 % Start GPS horizontal error(Meter),4.4600000381469727 % Start GPS vertical error(Meter),8.09000015258789 % Start GPS number of satellites,8 % End latitude,49.2954918 % End longitude,-123.1086749 % End altitude,-28.139999389648438 % End GPS horizontal error(Meter),5.059999942779541 % End GPS vertical error(Meter),9.119999885559082 % End GPS number of satellites,7 % Cast duration (Seconds),83.2 % 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 7.275 2.70653 4.19295 25.90 1468.38 1020.227 0.45 0.45 7.289 2.71035 4.19708 25.93 1468.48 1020.250 0.75 0.75 7.295 2.71948 4.21040 26.02 1468.62 1020.322 1.05 1.05 7.296 2.72673 4.22147 26.09 1468.73 1020.382 1.35 1.35 7.294 2.72878 4.22486 26.12 1468.75 1020.402 1.65 1.65 7.294 2.72918 4.22556 26.12 1468.76 1020.407 1.95 1.95 7.294 2.72995 4.22675 26.13 1468.78 1020.415 2.25 2.25 7.296 2.73097 4.22805 26.14 1468.80 1020.423 2.55 2.55 7.298 2.73260 4.23032 26.15 1468.83 1020.436 2.85 2.85 7.301 2.73432 4.23250 26.17 1468.87 1020.449 3.15 3.15 7.307 2.73858 4.23832 26.21 1468.95 1020.481 3.45 3.45 7.316 2.74344 4.24474 26.25 1469.04 1020.517 3.75 3.75 7.325 2.74545 4.24666 26.27 1469.10 1020.528 4.05 4.05 7.335 2.74870 4.25040 26.30 1469.18 1020.549 4.35 4.35 7.348 2.75905 4.26462 26.39 1469.36 1020.626 4.65 4.64 7.359 2.76487 4.27214 26.45 1469.47 1020.668 4.95 4.95 7.366 2.76735 4.27507 26.47 1469.53 1020.685 5.25 5.24 7.371 2.76763 4.27486 26.47 1469.55 1020.685 5.55 5.54 7.376 2.76890 4.27610 26.48 1469.59 1020.693 5.85 5.84 7.382 2.76986 4.27680 26.48 1469.62 1020.698 6.15 6.14 7.388 2.77086 4.27761 26.49 1469.66 1020.703 6.45 6.44 7.396 2.77497 4.28294 26.52 1469.74 1020.733 6.75 6.74 7.407 2.77799 4.28609 26.55 1469.82 1020.751 7.05 7.04 7.415 2.78062 4.28916 26.57 1469.88 1020.768 7.35 7.34 7.423 2.78143 4.28928 26.57 1469.92 1020.770 7.65 7.64 7.429 2.78101 4.28789 26.56 1469.94 1020.764 7.95 7.94 7.433 2.78159 4.28820 26.57 1469.96 1020.767 8.25 8.24 7.442 2.78195 4.28762 26.56 1470.00 1020.765 8.55 8.54 7.450 2.78254 4.28737 26.56 1470.04 1020.765 8.85 8.84 7.464 2.78652 4.29170 26.59 1470.13 1020.789 9.15 9.14 7.477 2.79008 4.29552 26.62 1470.22 1020.810 9.45 9.44 7.485 2.79316 4.29913 26.65 1470.29 1020.831 9.75 9.74 7.495 2.79672 4.30333 26.68 1470.37 1020.855 10.05 10.04 7.511 2.79994 4.30608 26.70 1470.47 1020.870 10.35 10.34 7.522 2.80145 4.30696 26.70 1470.52 1020.876 10.65 10.64 7.530 2.80394 4.30980 26.72 1470.58 1020.893 10.95 10.94 7.538 2.80800 4.31499 26.76 1470.66 1020.921 11.25 11.24 7.545 2.81457 4.32417 26.82 1470.78 1020.972 11.55 11.54 7.555 2.81734 4.32709 26.84 1470.85 1020.989 11.85 11.84 7.565 2.81981 4.32954 26.86 1470.91 1021.003 12.15 12.13 7.581 2.82356 4.33311 26.89 1471.01 1021.023 12.45 12.43 7.599 2.82761 4.33693 26.92 1471.12 1021.044 12.75 12.73 7.623 2.83496 4.34499 26.98 1471.30 1021.088 13.05 13.03 7.645 2.86397 4.38648 27.26 1471.74 1021.312 13.35 13.33 7.674 2.90212 4.44100 27.64 1472.33 1021.606 13.65 13.63 7.712 2.90732 4.44385 27.67 1472.51 1021.622 13.95 13.93 7.726 2.90820 4.44322 27.66 1472.57 1021.619 14.25 14.23 7.733 2.90900 4.44352 27.67 1472.60 1021.622 14.55 14.53 7.736 2.91057 4.44545 27.68 1472.64 1021.634 14.85 14.83 7.739 2.91162 4.44674 27.69 1472.66 1021.642 15.15 15.13 7.743 2.91314 4.44845 27.70 1472.70 1021.652 15.45 15.43 7.746 2.91418 4.44967 27.71 1472.72 1021.660 15.75 15.73 7.749 2.91491 4.45041 27.71 1472.75 1021.665 16.05 16.03 7.753 2.91586 4.45128 27.72 1472.78 1021.671 16.35 16.33 7.756 2.91746 4.45338 27.74 1472.81 1021.684 16.65 16.62 7.758 2.91800 4.45386 27.74 1472.83 1021.688 16.95 16.92 7.759 2.92017 4.45706 27.76 1472.86 1021.706 17.25 17.22 7.761 2.92063 4.45744 27.77 1472.88 1021.709 17.55 17.52 7.761 2.92053 4.45734 27.76 1472.88 1021.710 17.85 17.82 7.764 2.92087 4.45748 27.77 1472.90 1021.712 18.15 18.12 7.767 2.92109 4.45735 27.77 1472.92 1021.713 18.45 18.42 7.768 2.92130 4.45755 27.77 1472.93 1021.715 18.75 18.72 7.774 2.92236 4.45840 27.77 1472.96 1021.721 19.05 19.02 7.774 2.92246 4.45856 27.77 1472.97 1021.723 19.27 19.24 7.776 2.92282 4.45882 27.77 1472.98 1021.725