*2019/08/26 15:30:38.71 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/06/23 17:55:30.000 END TIME : UTC 2017/06/23 17:55:46.200 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 82 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.38 2 Depth metres 0.15 24.45 3 Temperature 'deg C (ITS90)' 10.958 14.648 4 Conductivity S/m 2.16192 2.77434 5 Conductance:Specific S/m 2.72641 3.85779 6 Salinity PSS-78 16.57 24 7 Speed:Sound m/s 1480.38 1485.07 8 Density kg/m^3 1011.878 1018.342 $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 : 577 LATITUDE : 49 18.21454 N ! (deg min) LONGITUDE : 122 58.83742 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 01:27:49 82 82 HDREDIT2 3.1.1 2017/12/13 11:33:23 ? ? CALIB 12.0 2019/08/26 15:30:38 82 82 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/09 01:27:48 -HEADER EDITS: 2017/12/13 11:33:23 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 15:30:38 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_20170623_175530 % Cast time (UTC),2017-06-23 17:55:30 % Cast time (local),2017-06-23 17:55:30 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.3035756 % Start longitude,-122.9806236 % Start altitude,-18.239999771118164 % Start GPS horizontal error(Meter),2.1099998950958252 % Start GPS vertical error(Meter),3.2400000095367432 % Start GPS number of satellites,7 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),71 % 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 14.648 2.16192 2.72641 16.57 1484.12 1011.878 0.45 0.45 14.554 2.16266 2.73384 16.61 1483.87 1011.932 0.75 0.76 14.421 2.17011 2.75245 16.73 1483.56 1012.049 1.05 1.06 14.384 2.21992 2.81830 17.17 1483.95 1012.392 1.35 1.36 14.392 2.27641 2.88940 17.64 1484.53 1012.756 1.65 1.66 14.387 2.28950 2.90639 17.76 1484.65 1012.845 1.95 1.96 14.369 2.29901 2.91984 17.85 1484.70 1012.918 2.25 2.27 14.335 2.32054 2.94972 18.05 1484.82 1013.078 2.55 2.57 14.265 2.33784 2.97699 18.23 1484.80 1013.230 2.85 2.87 14.186 2.35069 2.99938 18.37 1484.71 1013.358 3.15 3.17 14.106 2.35979 3.01715 18.49 1484.57 1013.463 3.45 3.47 13.962 2.37258 3.04472 18.67 1484.30 1013.628 3.75 3.77 13.740 2.38699 3.08076 18.90 1483.82 1013.847 4.05 4.08 13.454 2.40871 3.13196 19.23 1483.22 1014.154 4.35 4.38 13.229 2.53399 3.31421 20.45 1483.88 1015.133 4.65 4.68 13.123 2.67484 3.50813 21.76 1485.07 1016.163 4.95 4.98 12.854 2.68630 3.54824 22.02 1484.44 1016.410 5.25 5.28 12.512 2.68729 3.58191 22.23 1483.50 1016.631 5.55 5.58 12.346 2.68708 3.59757 22.32 1483.04 1016.735 5.85 5.88 12.298 2.68674 3.60171 22.35 1482.90 1016.764 6.15 6.18 12.274 2.68757 3.60517 22.37 1482.85 1016.787 6.45 6.48 12.261 2.68721 3.60598 22.38 1482.81 1016.794 6.75 6.78 12.252 2.68755 3.60730 22.38 1482.80 1016.803 7.05 7.08 12.247 2.68793 3.60829 22.39 1482.79 1016.810 7.35 7.38 12.242 2.68751 3.60815 22.39 1482.78 1016.811 7.65 7.69 12.236 2.68763 3.60890 22.39 1482.77 1016.817 7.95 7.99 12.229 2.68793 3.60997 22.40 1482.76 1016.825 8.25 8.29 12.222 2.68812 3.61093 22.41 1482.74 1016.832 8.55 8.59 12.219 2.68876 3.61207 22.41 1482.74 1016.840 8.85 8.89 12.215 2.68948 3.61346 22.42 1482.75 1016.849 9.15 9.19 12.210 2.68995 3.61459 22.43 1482.74 1016.857 9.45 9.49 12.199 2.69007 3.61575 22.44 1482.72 1016.865 9.75 9.79 12.190 2.69084 3.61771 22.45 1482.70 1016.878 10.05 10.09 12.182 2.69170 3.61961 22.46 1482.70 1016.890 10.35 10.39 12.176 2.69207 3.62069 22.47 1482.69 1016.898 10.65 10.69 12.162 2.69221 3.62225 22.48 1482.66 1016.909 10.95 10.99 12.134 2.69268 3.62560 22.50 1482.59 1016.931 11.25 11.29 12.104 2.69345 3.62959 22.52 1482.52 1016.957 11.55 11.60 12.067 2.69717 3.63823 22.58 1482.46 1017.008 11.85 11.90 12.035 2.70852 3.65674 22.70 1482.49 1017.111 12.15 12.20 11.992 2.71696 3.67235 22.81 1482.47 1017.200 12.45 12.50 11.936 2.72206 3.68484 22.89 1482.38 1017.273 12.75 12.80 11.880 2.72581 3.69548 22.96 1482.26 1017.337 13.05 13.10 11.839 2.72832 3.70303 23.01 1482.18 1017.383 13.35 13.40 11.786 2.73072 3.71166 23.06 1482.06 1017.435 13.65 13.70 11.740 2.73283 3.71912 23.11 1481.96 1017.481 13.95 14.00 11.715 2.73978 3.73118 23.19 1481.97 1017.549 14.25 14.30 11.699 2.74398 3.73846 23.24 1481.98 1017.590 14.55 14.60 11.661 2.74775 3.74752 23.30 1481.92 1017.644 14.85 14.90 11.622 2.74981 3.75436 23.34 1481.83 1017.686 15.15 15.20 11.604 2.75081 3.75755 23.36 1481.80 1017.706 15.45 15.50 11.589 2.75130 3.75977 23.38 1481.77 1017.720 15.75 15.80 11.570 2.75123 3.76161 23.39 1481.72 1017.733 16.05 16.10 11.557 2.75173 3.76366 23.40 1481.69 1017.747 16.35 16.40 11.549 2.75176 3.76449 23.41 1481.67 1017.753 16.65 16.70 11.537 2.75174 3.76565 23.41 1481.65 1017.762 16.95 17.00 11.518 2.75135 3.76711 23.42 1481.59 1017.773 17.25 17.31 11.494 2.75173 3.77009 23.44 1481.53 1017.793 17.55 17.61 11.456 2.75238 3.77489 23.47 1481.44 1017.823 17.85 17.91 11.411 2.75394 3.78173 23.51 1481.33 1017.865 18.15 18.21 11.379 2.76149 3.79541 23.60 1481.33 1017.943 18.45 18.51 11.355 2.76758 3.80636 23.68 1481.34 1018.004 18.75 18.81 11.311 2.76926 3.81324 23.72 1481.24 1018.047 19.05 19.11 11.264 2.76895 3.81771 23.75 1481.11 1018.076 19.35 19.41 11.229 2.76910 3.82164 23.77 1481.01 1018.102 19.65 19.71 11.200 2.76948 3.82527 23.79 1480.94 1018.125 19.95 20.01 11.185 2.77017 3.82777 23.81 1480.91 1018.141 20.25 20.31 11.177 2.77002 3.82842 23.81 1480.89 1018.147 20.55 20.61 11.166 2.77041 3.83016 23.82 1480.87 1018.159 20.85 20.91 11.154 2.77048 3.83153 23.83 1480.84 1018.168 21.15 21.21 11.130 2.77061 3.83419 23.85 1480.78 1018.186 21.45 21.51 11.101 2.77057 3.83727 23.87 1480.70 1018.206 21.75 21.81 11.091 2.77182 3.84000 23.89 1480.69 1018.223 22.05 22.11 11.094 2.77276 3.84105 23.89 1480.71 1018.230 22.35 22.41 11.077 2.77300 3.84312 23.91 1480.68 1018.244 22.65 22.71 11.054 2.77298 3.84560 23.92 1480.61 1018.260 22.95 23.01 11.029 2.77340 3.84881 23.94 1480.55 1018.281 23.25 23.31 11.006 2.77380 3.85182 23.96 1480.50 1018.301 23.55 23.61 10.989 2.77418 3.85420 23.97 1480.46 1018.316 23.85 23.91 10.970 2.77388 3.85583 23.98 1480.40 1018.328 24.15 24.21 10.958 2.77402 3.85733 23.99 1480.38 1018.338 24.38 24.45 10.958 2.77434 3.85779 24.00 1480.38 1018.342