*2019/08/26 15:30:05.57 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/03/09 18:01:41.000 END TIME : UTC 2016/03/09 18:01:53.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 62 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.5 2 Depth metres 0.15 18.6 3 Temperature 'deg C (ITS90)' 6.358 8.383 4 Conductivity S/m 0.5972E-01 2.66723 5 Conductance:Specific S/m 0.9519999E-01 3.99529 6 Salinity PSS-78 0.46 24.68 7 Speed:Sound m/s 1432.77 1471.5 8 Density kg/m^3 1000.296 1019.22 $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 : 2016-98 AGENCY : Canadian Hydrographic Service COUNTRY : Canada PROJECT : CHS CTD Data Acquisition SCIENTIST : Dangerfield N. *LOCATION EVENT NUMBER : 175 LATITUDE : 49 7.10822 N ! (deg min) LONGITUDE : 123 4.77302 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 18:59:06 62 62 HDREDIT2 3.1.1 2017/12/13 11:31:11 ? ? CALIB 12.0 2019/08/26 15:30:05 62 62 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 18:59:06 -HEADER EDITS: 2017/12/13 11:31:11 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 15:30:05 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_20160309_180141 % Cast time (UTC),2016-03-09 18:01:41 % Cast time (local),2016-03-09 18:01:41 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1184703 % Start longitude,-123.0795504 % Start altitude,-16.299999237060547 % Start GPS horizontal error(Meter),1.7599999904632568 % Start GPS vertical error(Meter),2.7699999809265137 % Start GPS number of satellites,7 % End latitude,49.1180422 % End longitude,-123.0807865 % End altitude,-17.399999618530273 % End GPS horizontal error(Meter),5.190000057220459 % End GPS vertical error(Meter),8.7700004577636719 % End GPS number of satellites,7 % Cast duration (Seconds),95.2 % 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 6.373 0.05986 0.09539 0.46 1432.82 1000.296 0.45 0.46 6.369 0.05972 0.09520 0.46 1432.81 1000.297 0.75 0.76 6.358 0.06011 0.09584 0.46 1432.77 1000.302 1.05 1.07 6.358 0.06154 0.09813 0.47 1432.78 1000.312 1.35 1.38 6.369 0.06461 0.10298 0.50 1432.87 1000.333 1.65 1.68 6.384 0.07191 0.11456 0.55 1433.02 1000.380 1.95 1.99 6.390 0.08545 0.13610 0.66 1433.19 1000.468 2.25 2.29 6.397 0.09700 0.15448 0.76 1433.34 1000.544 2.55 2.60 6.408 0.11042 0.17578 0.87 1433.54 1000.632 2.85 2.90 6.420 0.12709 0.20224 1.00 1433.77 1000.742 3.15 3.21 6.435 0.13588 0.21613 1.08 1433.93 1000.800 3.45 3.52 6.445 0.14400 0.22897 1.14 1434.07 1000.855 3.75 3.82 6.454 0.15923 0.25311 1.27 1434.27 1000.957 4.05 4.13 6.474 0.17523 0.27837 1.41 1434.53 1001.064 4.35 4.43 6.528 0.20550 0.32591 1.66 1435.10 1001.264 4.65 4.74 6.702 0.69488 1.09596 6.03 1441.38 1004.707 4.95 5.04 6.974 1.06871 1.67124 9.50 1446.87 1007.422 5.25 5.34 7.275 1.51220 2.34265 13.71 1453.36 1010.701 5.55 5.65 7.477 1.87336 2.88409 17.21 1458.52 1013.421 5.85 5.95 7.593 2.02405 3.10505 18.66 1460.78 1014.548 6.15 6.25 7.709 2.11092 3.22679 19.48 1462.25 1015.172 6.45 6.55 7.803 2.21394 3.37460 20.46 1463.85 1015.934 6.75 6.85 7.900 2.29760 3.49184 21.25 1465.20 1016.542 7.05 7.15 7.988 2.36529 3.58510 21.88 1466.33 1017.027 7.35 7.45 8.055 2.43206 3.67885 22.52 1467.38 1017.517 7.65 7.75 8.138 2.47408 3.73302 22.89 1468.17 1017.800 7.95 8.05 8.178 2.50787 3.77945 23.21 1468.72 1018.044 8.25 8.35 8.220 2.53877 3.82120 23.49 1469.24 1018.263 8.55 8.65 8.242 2.55672 3.84562 23.66 1469.54 1018.393 8.85 8.95 8.262 2.56637 3.85784 23.74 1469.72 1018.458 9.15 9.25 8.282 2.57515 3.86865 23.82 1469.90 1018.515 9.45 9.55 8.297 2.57898 3.87269 23.85 1470.00 1018.538 9.75 9.86 8.303 2.58383 3.87926 23.89 1470.08 1018.573 10.05 10.15 8.308 2.58608 3.88210 23.91 1470.13 1018.590 10.35 10.46 8.315 2.59113 3.88881 23.96 1470.22 1018.626 10.65 10.76 8.319 2.59418 3.89295 23.99 1470.27 1018.649 10.95 11.06 8.323 2.59871 3.89927 24.03 1470.35 1018.684 11.25 11.36 8.327 2.60246 3.90444 24.07 1470.41 1018.712 11.55 11.66 8.333 2.60697 3.91051 24.11 1470.49 1018.745 11.85 11.96 8.338 2.60975 3.91411 24.13 1470.54 1018.766 12.15 12.26 8.340 2.61098 3.91570 24.14 1470.57 1018.775 12.45 12.56 8.342 2.61198 3.91698 24.15 1470.59 1018.783 12.75 12.86 8.345 2.61420 3.91989 24.17 1470.64 1018.800 13.05 13.16 8.348 2.61636 3.92282 24.19 1470.68 1018.816 13.35 13.46 8.350 2.61967 3.92751 24.22 1470.73 1018.843 13.65 13.76 8.353 2.62438 3.93420 24.27 1470.80 1018.879 13.95 14.06 8.357 2.63377 3.94780 24.36 1470.94 1018.952 14.25 14.36 8.362 2.64659 3.96650 24.49 1471.11 1019.053 14.55 14.66 8.368 2.65239 3.97448 24.54 1471.21 1019.096 14.85 14.96 8.371 2.65475 3.97763 24.57 1471.25 1019.114 15.15 15.26 8.374 2.65616 3.97942 24.58 1471.28 1019.125 15.45 15.56 8.377 2.65786 3.98158 24.59 1471.32 1019.137 15.75 15.86 8.378 2.65899 3.98318 24.60 1471.34 1019.147 16.05 16.16 8.379 2.65985 3.98437 24.61 1471.36 1019.155 16.35 16.46 8.378 2.66069 3.98571 24.62 1471.37 1019.163 16.65 16.76 8.376 2.66229 3.98829 24.64 1471.39 1019.178 16.95 17.06 8.376 2.66336 3.98997 24.65 1471.41 1019.188 17.25 17.36 8.376 2.66421 3.99117 24.66 1471.42 1019.196 17.55 17.66 8.378 2.66492 3.99197 24.66 1471.44 1019.202 17.85 17.96 8.380 2.66723 3.99529 24.68 1471.48 1019.220 18.15 18.26 8.381 2.66712 3.99493 24.68 1471.49 1019.220 18.50 18.60 8.383 2.66707 3.99470 24.68 1471.50 1019.220