*2019/08/26 15:30:36.33 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/20 23:51:08.000 END TIME : UTC 2017/06/20 23:51:19.600 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 59 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 17.41 2 Depth metres 0.15 17.44 3 Temperature 'deg C (ITS90)' 10.165 15.347 4 Conductivity S/m 1.39094 3.1051 5 Conductance:Specific S/m 1.72373 4.41509 6 Salinity PSS-78 10.07 27.77 7 Speed:Sound m/s 1478.96 1482.46 8 Density kg/m^3 1006.781 1021.365 $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 : 524 LATITUDE : 49 18.15674 N ! (deg min) LONGITUDE : 123 6.97409 W ! (deg min) *INSTRUMENT TYPE : SonTek CTD MODEL : CastAway SERIAL NUMBER : CC1606003 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------- ------ ---------- -------- --------- --------- READ_CHS_CTDS 1.0 2017/12/09 00:35:28 59 59 HDREDIT2 3.1.1 2017/12/13 11:33:21 ? ? CALIB 12.0 2019/08/26 15:30:36 59 59 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 00:35:28 -HEADER EDITS: 2017/12/13 11:33:21 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 15:30:36 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,CC1606003 % File name,CC1606003_20170620_235108 % Cast time (UTC),2017-06-20 23:51:08 % Cast time (local),2017-06-20 23:51:08 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3026123 % Start longitude,-123.1162349 % Start altitude,-13.479999542236328 % Start GPS horizontal error(Meter),2 % Start GPS vertical error(Meter),3.2899999618530273 % Start GPS number of satellites,7 % End latitude,49.3024198 % End longitude,-123.1160836 % End altitude,-30.280000686645508 % End GPS horizontal error(Meter),3.5999999046325684 % End GPS vertical error(Meter),7.5199999809265137 % End GPS number of satellites,7 % Cast duration (Seconds),78.6 % Samples per second,5 % Electronics calibration date,0001-01-01 % Conductivity calibration date,2016-03-01 % Temperature calibration date,2016-02-23 % Pressure calibration date,2016-02-12 % 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 15.347 1.39094 1.72373 10.07 1478.96 1006.781 0.45 0.46 15.064 1.52925 1.90849 11.24 1479.37 1007.728 0.75 0.76 14.799 1.64044 2.06091 12.22 1479.60 1008.521 1.05 1.06 14.508 1.71930 2.17590 12.95 1479.47 1009.136 1.35 1.36 14.267 1.87220 2.38393 14.30 1480.21 1010.212 1.65 1.67 14.175 2.07697 2.65089 16.05 1481.94 1011.573 1.95 1.97 13.936 2.19895 2.82383 17.19 1482.46 1012.491 2.25 2.27 13.657 2.24292 2.90108 17.69 1482.09 1012.928 2.55 2.57 13.395 2.31611 3.01617 18.45 1482.08 1013.557 2.85 2.88 13.158 2.38213 3.12141 19.15 1482.08 1014.134 3.15 3.18 13.024 2.45143 3.22353 19.83 1482.42 1014.683 3.45 3.48 12.864 2.49385 3.29319 20.29 1482.41 1015.067 3.75 3.78 12.704 2.51389 3.33371 20.55 1482.17 1015.300 4.05 4.08 12.574 2.52064 3.35425 20.68 1481.87 1015.425 4.35 4.38 12.455 2.52968 3.37693 20.83 1481.63 1015.559 4.65 4.68 12.358 2.54274 3.40319 21.00 1481.50 1015.710 4.95 4.98 12.239 2.55923 3.43624 21.22 1481.34 1015.898 5.25 5.28 12.126 2.59919 3.50050 21.65 1481.46 1016.250 5.55 5.58 12.031 2.66371 3.59663 22.30 1481.89 1016.767 5.85 5.89 11.907 2.71116 3.67297 22.81 1482.07 1017.185 6.15 6.19 11.775 2.74248 3.72870 23.18 1482.05 1017.495 6.45 6.49 11.658 2.75820 3.76209 23.40 1481.89 1017.686 6.75 6.79 11.604 2.76448 3.77623 23.49 1481.82 1017.768 7.05 7.09 11.571 2.77324 3.79161 23.60 1481.83 1017.854 7.35 7.39 11.541 2.78073 3.80497 23.68 1481.83 1017.930 7.65 7.69 11.520 2.78045 3.80676 23.70 1481.77 1017.943 7.95 7.99 11.508 2.78153 3.80949 23.71 1481.76 1017.960 8.25 8.29 11.500 2.78209 3.81103 23.72 1481.75 1017.970 8.55 8.59 11.490 2.78451 3.81548 23.75 1481.75 1017.996 8.85 8.89 11.474 2.78687 3.82034 23.79 1481.74 1018.025 9.15 9.19 11.453 2.79117 3.82841 23.84 1481.73 1018.071 9.45 9.49 11.416 2.81213 3.86109 24.06 1481.87 1018.250 9.75 9.79 11.368 2.84312 3.90880 24.38 1482.09 1018.510 10.05 10.09 11.310 2.87284 3.95594 24.70 1482.27 1018.768 10.35 10.39 11.191 2.90433 4.01246 25.08 1482.30 1019.082 10.65 10.69 11.058 2.93004 4.06294 25.42 1482.23 1019.366 10.95 10.99 10.972 2.95490 4.10726 25.72 1482.28 1019.613 11.25 11.29 10.910 2.97359 4.14036 25.94 1482.33 1019.797 11.55 11.59 10.842 2.98431 4.16312 26.09 1482.27 1019.927 11.85 11.89 10.773 2.99105 4.18059 26.20 1482.16 1020.028 12.15 12.19 10.717 3.00125 4.20141 26.34 1482.13 1020.146 12.45 12.49 10.673 3.02177 4.23541 26.57 1482.26 1020.334 12.75 12.79 10.587 3.03659 4.26641 26.78 1482.20 1020.510 13.05 13.09 10.530 3.05212 4.29517 26.97 1482.23 1020.671 13.35 13.39 10.477 3.05683 4.30814 27.06 1482.15 1020.746 13.65 13.69 10.427 3.06055 4.31947 27.13 1482.06 1020.812 13.95 13.99 10.403 3.06012 4.32184 27.15 1481.99 1020.828 14.25 14.29 10.386 3.06302 4.32797 27.19 1481.99 1020.864 14.55 14.59 10.370 3.06733 4.33610 27.24 1482.00 1020.911 14.85 14.89 10.347 3.06396 4.33412 27.23 1481.90 1020.903 15.15 15.19 10.328 3.06645 4.33999 27.26 1481.88 1020.937 15.45 15.49 10.326 3.06916 4.34409 27.29 1481.91 1020.961 15.75 15.79 10.335 3.07303 4.34836 27.32 1481.99 1020.985 16.05 16.09 10.328 3.07729 4.35532 27.37 1482.02 1021.024 16.35 16.39 10.307 3.08153 4.36386 27.43 1482.02 1021.073 16.65 16.68 10.275 3.08828 4.37743 27.52 1482.02 1021.150 16.95 16.98 10.246 3.09724 4.39380 27.63 1482.05 1021.242 17.25 17.28 10.196 3.10233 4.40726 27.72 1481.98 1021.320 17.41 17.44 10.165 3.10510 4.41509 27.77 1481.93 1021.365