*2019/08/26 15:30:12.15 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/20 00:55:50.000 END TIME : UTC 2016/10/20 00:56:02.200 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 18.58 2 Depth metres 0.15 18.8 3 Temperature 'deg C (ITS90)' 10.527 10.66 4 Conductivity S/m 0.895E-02 2.79664 5 Conductance:Specific S/m 0.1255E-01 3.93584 6 Salinity PSS-78 0.6E-01 24.5 7 Speed:Sound m/s 1449.94 1479.33 8 Density kg/m^3 999.689 1018.77 $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 : 419 LATITUDE : 49 7.03828 N ! (deg min) LONGITUDE : 123 4.90481 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 2017/12/08 22:52:06 62 62 HDREDIT2 3.1.1 2017/12/13 11:31:15 ? ? CALIB 12.0 2019/08/26 15:30:12 62 62 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:52:06 -HEADER EDITS: 2017/12/13 11:31:15 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 15:30:12 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_20161020_005550 % Cast time (UTC),2016-10-20 00:55:50 % Cast time (local),2016-10-20 00:55:50 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1173046 % Start longitude,-123.0817468 % Start altitude,-16.139999389648438 % Start GPS horizontal error(Meter),19.430000305175781 % Start GPS vertical error(Meter),24.6200008392334 % Start GPS number of satellites,4 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),76 % 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 10.656 0.00895 0.01255 0.06 1449.94 999.689 0.45 0.46 10.656 0.00947 0.01328 0.06 1449.95 999.693 0.75 0.77 10.655 0.01296 0.01817 0.09 1449.98 999.712 1.05 1.07 10.656 0.01541 0.02161 0.10 1450.01 999.726 1.35 1.38 10.658 0.01626 0.02280 0.11 1450.03 999.732 1.65 1.68 10.659 0.01767 0.02478 0.12 1450.05 999.741 1.95 1.99 10.660 0.01919 0.02691 0.13 1450.07 999.750 2.25 2.29 10.659 0.02850 0.03996 0.19 1450.15 999.801 2.55 2.60 10.658 0.05920 0.08301 0.40 1450.42 999.969 2.85 2.91 10.658 0.07294 0.10227 0.50 1450.54 1000.047 3.15 3.21 10.657 0.08414 0.11798 0.58 1450.64 1000.111 3.45 3.52 10.656 0.09890 0.13868 0.69 1450.77 1000.196 3.75 3.82 10.654 0.13876 0.19460 0.98 1451.13 1000.426 4.05 4.13 10.652 0.16959 0.23784 1.21 1451.41 1000.607 4.35 4.43 10.651 0.17535 0.24592 1.25 1451.47 1000.643 4.65 4.74 10.648 0.19886 0.27891 1.43 1451.68 1000.783 4.95 5.05 10.647 0.22356 0.31358 1.61 1451.91 1000.931 5.25 5.35 10.646 0.24530 0.34407 1.78 1452.12 1001.062 5.55 5.66 10.646 0.25690 0.36035 1.87 1452.24 1001.133 5.85 5.96 10.646 0.27060 0.37956 1.98 1452.37 1001.217 6.15 6.27 10.646 0.28459 0.39919 2.08 1452.51 1001.303 6.45 6.57 10.649 0.31421 0.44070 2.31 1452.81 1001.484 6.75 6.88 10.649 0.36443 0.51113 2.71 1453.30 1001.793 7.05 7.18 10.650 0.40154 0.56317 3.00 1453.67 1002.023 7.35 7.49 10.651 0.45535 0.63861 3.43 1454.20 1002.360 7.65 7.79 10.653 0.52371 0.73446 3.99 1454.88 1002.791 7.95 8.10 10.653 0.55678 0.78083 4.25 1455.22 1003.002 8.25 8.40 10.656 0.56294 0.78940 4.30 1455.30 1003.042 8.55 8.71 10.659 0.56558 0.79304 4.33 1455.34 1003.059 8.85 9.01 10.660 0.57716 0.80926 4.42 1455.46 1003.134 9.15 9.32 10.659 0.59401 0.83291 4.56 1455.63 1003.243 9.45 9.62 10.658 0.61879 0.86768 4.76 1455.88 1003.403 9.75 9.93 10.657 0.65542 0.91906 5.07 1456.25 1003.640 10.05 10.23 10.654 0.67650 0.94870 5.24 1456.46 1003.778 10.35 10.54 10.649 0.68840 0.96552 5.34 1456.56 1003.857 10.65 10.84 10.646 0.69448 0.97413 5.39 1456.62 1003.899 10.95 11.15 10.638 0.71044 0.99674 5.53 1456.76 1004.005 11.25 11.45 10.631 0.74383 1.04380 5.81 1457.07 1004.225 11.55 11.76 10.622 0.81163 1.13924 6.38 1457.73 1004.671 11.85 12.06 10.610 0.93502 1.31285 7.43 1458.97 1005.490 12.15 12.36 10.603 1.10002 1.54486 8.85 1460.67 1006.597 12.45 12.67 10.592 1.47662 2.07437 12.18 1464.64 1009.177 12.75 12.97 10.579 2.03086 2.85403 17.23 1470.67 1013.097 13.05 13.27 10.568 2.30422 3.23915 19.78 1473.71 1015.082 13.35 13.57 10.559 2.43669 3.42626 21.04 1475.19 1016.058 13.65 13.87 10.550 2.52176 3.54678 21.85 1476.14 1016.691 13.95 14.17 10.543 2.64346 3.71872 23.02 1477.52 1017.598 14.25 14.47 10.537 2.71714 3.82302 23.73 1478.36 1018.151 14.55 14.77 10.534 2.73668 3.85078 23.91 1478.59 1018.300 14.85 15.07 10.532 2.74932 3.86882 24.04 1478.73 1018.397 15.15 15.38 10.529 2.75693 3.87979 24.11 1478.82 1018.457 15.45 15.68 10.528 2.75941 3.88346 24.14 1478.84 1018.478 15.75 15.97 10.527 2.76012 3.88454 24.14 1478.86 1018.485 16.05 16.28 10.527 2.76208 3.88731 24.16 1478.88 1018.501 16.35 16.58 10.528 2.76198 3.88709 24.16 1478.89 1018.501 16.65 16.88 10.527 2.76401 3.88997 24.18 1478.92 1018.518 16.95 17.18 10.528 2.76549 3.89201 24.20 1478.94 1018.530 17.25 17.48 10.528 2.77471 3.90498 24.28 1479.05 1018.600 17.55 17.78 10.527 2.78361 3.91762 24.37 1479.16 1018.669 17.85 18.08 10.527 2.79397 3.93216 24.47 1479.28 1018.747 18.15 18.38 10.527 2.79641 3.93557 24.49 1479.32 1018.767 18.58 18.80 10.528 2.79664 3.93584 24.50 1479.33 1018.770