*2019/08/26 15:30:37.67 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/22 20:55:19.000 END TIME : UTC 2017/06/22 20:55:36.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 88 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 26.12 2 Depth metres 0.15 26.17 3 Temperature 'deg C (ITS90)' 10.675 14.189 4 Conductivity S/m 2.36849 2.79414 5 Conductance:Specific S/m 3.02185 3.91611 6 Salinity PSS-78 18.52 24.37 7 Speed:Sound m/s 1479.83 1484.85 8 Density kg/m^3 1013.462 1018.684 $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 : 552 LATITUDE : 49 17.61583 N ! (deg min) LONGITUDE : 122 58.85022 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 01:02:35 88 88 HDREDIT2 3.1.1 2017/12/13 11:33:22 ? ? CALIB 12.0 2019/08/26 15:30:37 88 88 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:02:35 -HEADER EDITS: 2017/12/13 11:33:22 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 15:30:37 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_20170622_205519 % Cast time (UTC),2017-06-22 20:55:19 % Cast time (local),2017-06-22 20:55:19 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2935972 % Start longitude,-122.980837 % Start altitude,-22.920000076293945 % Start GPS horizontal error(Meter),2.6700000762939453 % Start GPS vertical error(Meter),4.4200000762939453 % Start GPS number of satellites,7 % End latitude,49.2934569 % End longitude,-122.9802346 % End altitude,-15.149999618530273 % End GPS horizontal error(Meter),3.0999999046325684 % End GPS vertical error(Meter),5.9000000953674316 % End GPS number of satellites,8 % Cast duration (Seconds),79.4 % 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 14.189 2.36849 3.02185 18.52 1484.85 1013.462 0.45 0.45 14.158 2.37045 3.02681 18.55 1484.78 1013.494 0.75 0.75 14.103 2.37223 3.03332 18.60 1484.65 1013.537 1.05 1.06 14.036 2.37653 3.04404 18.67 1484.51 1013.603 1.35 1.36 13.924 2.38285 3.06092 18.77 1484.26 1013.708 1.65 1.66 13.803 2.39610 3.08754 18.95 1484.05 1013.864 1.95 1.96 13.667 2.41493 3.12270 19.18 1483.86 1014.067 2.25 2.26 13.490 2.45374 3.18752 19.61 1483.76 1014.429 2.55 2.56 13.260 2.48664 3.24963 20.02 1483.45 1014.784 2.85 2.87 13.136 2.49650 3.27311 20.17 1483.21 1014.924 3.15 3.17 13.061 2.50865 3.29559 20.32 1483.12 1015.053 3.45 3.47 12.946 2.53499 3.34023 20.61 1483.08 1015.302 3.75 3.77 12.789 2.55501 3.38067 20.88 1482.85 1015.535 4.05 4.07 12.681 2.57705 3.41954 21.13 1482.78 1015.753 4.35 4.37 12.610 2.58191 3.43252 21.22 1482.63 1015.831 4.65 4.67 12.539 2.58719 3.44600 21.30 1482.49 1015.912 4.95 4.97 12.462 2.59809 3.46763 21.45 1482.40 1016.036 5.25 5.27 12.358 2.62394 3.51192 21.74 1482.38 1016.282 5.55 5.58 12.233 2.64441 3.55113 22.00 1482.26 1016.504 5.85 5.88 12.069 2.67921 3.61386 22.42 1482.17 1016.855 6.15 6.18 11.944 2.69215 3.64358 22.61 1481.97 1017.027 6.45 6.48 11.882 2.69736 3.65677 22.70 1481.85 1017.105 6.75 6.78 11.843 2.69961 3.66366 22.74 1481.77 1017.147 7.05 7.08 11.809 2.70070 3.66855 22.77 1481.69 1017.178 7.35 7.38 11.786 2.70155 3.67202 22.79 1481.64 1017.200 7.65 7.68 11.775 2.70250 3.67434 22.81 1481.63 1017.215 7.95 7.98 11.765 2.70285 3.67582 22.82 1481.61 1017.225 8.25 8.28 11.755 2.70260 3.67652 22.82 1481.58 1017.231 8.55 8.58 11.745 2.70352 3.67871 22.84 1481.57 1017.245 8.85 8.88 11.730 2.70363 3.68038 22.85 1481.53 1017.257 9.15 9.18 11.712 2.70450 3.68335 22.87 1481.50 1017.276 9.45 9.48 11.692 2.70561 3.68689 22.89 1481.46 1017.298 9.75 9.78 11.661 2.70683 3.69169 22.92 1481.39 1017.328 10.05 10.09 11.642 2.70892 3.69644 22.95 1481.36 1017.356 10.35 10.38 11.631 2.70990 3.69896 22.97 1481.34 1017.372 10.65 10.69 11.606 2.71185 3.70406 23.00 1481.30 1017.403 10.95 10.99 11.549 2.71436 3.71329 23.06 1481.17 1017.459 11.25 11.29 11.504 2.72296 3.72969 23.17 1481.14 1017.552 11.55 11.59 11.475 2.73142 3.74420 23.26 1481.16 1017.633 11.85 11.89 11.445 2.73562 3.75306 23.32 1481.13 1017.684 12.15 12.19 11.405 2.73669 3.75863 23.36 1481.03 1017.719 12.45 12.49 11.371 2.73695 3.76258 23.38 1480.94 1017.745 12.75 12.79 11.343 2.73755 3.76624 23.40 1480.88 1017.768 13.05 13.09 11.331 2.73768 3.76770 23.41 1480.85 1017.779 13.35 13.39 11.325 2.73740 3.76789 23.41 1480.83 1017.781 13.65 13.69 11.318 2.73779 3.76922 23.42 1480.82 1017.791 13.95 13.99 11.306 2.73733 3.76984 23.43 1480.79 1017.796 14.25 14.29 11.291 2.73792 3.77221 23.44 1480.76 1017.812 14.55 14.59 11.271 2.73867 3.77529 23.46 1480.71 1017.831 14.85 14.89 11.253 2.73889 3.77743 23.47 1480.67 1017.846 15.15 15.19 11.231 2.74032 3.78173 23.50 1480.63 1017.872 15.45 15.49 11.204 2.74366 3.78916 23.55 1480.59 1017.915 15.75 15.79 11.178 2.74737 3.79703 23.60 1480.57 1017.961 16.05 16.09 11.159 2.75233 3.80589 23.66 1480.57 1018.011 16.35 16.39 11.153 2.75432 3.80927 23.68 1480.58 1018.031 16.65 16.70 11.146 2.75464 3.81047 23.69 1480.57 1018.039 16.95 17.00 11.127 2.75575 3.81401 23.71 1480.53 1018.061 17.25 17.30 11.104 2.75657 3.81752 23.73 1480.48 1018.083 17.55 17.60 11.091 2.75769 3.82041 23.75 1480.47 1018.101 17.85 17.90 11.081 2.75709 3.82071 23.75 1480.43 1018.105 18.15 18.20 11.067 2.75709 3.82218 23.76 1480.40 1018.115 18.45 18.50 11.055 2.75888 3.82593 23.79 1480.39 1018.138 18.75 18.80 11.036 2.76033 3.83000 23.81 1480.36 1018.162 19.05 19.10 11.005 2.76237 3.83610 23.85 1480.30 1018.199 19.35 19.40 10.973 2.76628 3.84496 23.91 1480.26 1018.250 19.65 19.70 10.947 2.76993 3.85283 23.96 1480.23 1018.296 19.95 20.00 10.916 2.77187 3.85879 24.00 1480.17 1018.332 20.25 20.30 10.889 2.77486 3.86588 24.05 1480.13 1018.373 20.55 20.60 10.865 2.77913 3.87440 24.10 1480.12 1018.422 20.85 20.90 10.842 2.78176 3.88054 24.14 1480.09 1018.458 21.15 21.20 10.817 2.78305 3.88509 24.17 1480.03 1018.486 21.45 21.50 10.796 2.78390 3.88852 24.19 1479.99 1018.507 21.75 21.80 10.787 2.78431 3.89010 24.20 1479.97 1018.518 22.05 22.10 10.779 2.78431 3.89093 24.21 1479.95 1018.524 22.35 22.40 10.769 2.78490 3.89292 24.22 1479.94 1018.537 22.65 22.70 10.754 2.78506 3.89479 24.23 1479.90 1018.550 22.95 23.00 10.739 2.78621 3.89802 24.25 1479.88 1018.569 23.25 23.30 10.735 2.78791 3.90081 24.27 1479.89 1018.586 23.55 23.60 10.748 2.79172 3.90476 24.30 1479.97 1018.607 23.85 23.90 10.743 2.79226 3.90607 24.31 1479.97 1018.616 24.15 24.20 10.728 2.79141 3.90650 24.31 1479.92 1018.621 24.45 24.50 10.717 2.79020 3.90594 24.30 1479.88 1018.620 24.75 24.80 10.718 2.79201 3.90843 24.32 1479.91 1018.634 25.05 25.10 10.697 2.79254 3.91144 24.34 1479.86 1018.653 25.35 25.40 10.685 2.79333 3.91386 24.36 1479.84 1018.669 25.65 25.70 10.681 2.79259 3.91326 24.35 1479.83 1018.667 25.95 26.00 10.675 2.79414 3.91611 24.37 1479.83 1018.684 26.12 26.17 10.677 2.79408 3.91583 24.37 1479.84 1018.683