*2019/08/26 15:30:33.13 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2017/03/03 18:06:51.000 END TIME : UTC 2017/03/03 18:07:07.000 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 81 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 24.21 2 Depth metres 0.15 24.18 3 Temperature 'deg C (ITS90)' 7.394 7.552 4 Conductivity S/m 2.77619 2.84551 5 Conductance:Specific S/m 4.28491 4.37067 6 Salinity PSS-78 26.54 27.14 7 Speed:Sound m/s 1469.65 1471.4 8 Density kg/m^3 1020.716 1021.277 $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 : 326 LATITUDE : 49 17.88153 N ! (deg min) LONGITUDE : 123 3.64034 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 21:18:11 81 81 HDREDIT2 3.1.1 2017/12/13 11:33:18 ? ? CALIB 12.0 2019/08/26 15:30:33 81 81 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 21:18:10 -HEADER EDITS: 2017/12/13 11:33:18 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 15:30:33 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_20170303_180651_mid % Cast time (UTC),2017-03-03 18:06:51 % Cast time (local),2017-03-03 18:06:51 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.2980255 % Start longitude,-123.0606724 % Start altitude,-19.360000610351562 % Start GPS horizontal error(Meter),5.630000114440918 % Start GPS vertical error(Meter),9.2899999618530273 % Start GPS number of satellites,5 % End latitude,49.2980029 % End longitude,-123.0606435 % End altitude,-6.1100001335144043 % End GPS horizontal error(Meter),5.53000020980835 % End GPS vertical error(Meter),9.2299995422363281 % End GPS number of satellites,5 % Cast duration (Seconds),71.8 % 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 7.395 2.77619 4.28491 26.54 1469.65 1020.716 0.45 0.45 7.395 2.77638 4.28517 26.54 1469.66 1020.719 0.75 0.75 7.396 2.77630 4.28494 26.54 1469.67 1020.719 1.05 1.05 7.396 2.77666 4.28552 26.54 1469.68 1020.723 1.35 1.35 7.397 2.77753 4.28676 26.55 1469.70 1020.731 1.65 1.65 7.396 2.77708 4.28618 26.55 1469.69 1020.729 1.95 1.95 7.395 2.77725 4.28652 26.55 1469.70 1020.732 2.25 2.25 7.397 2.77672 4.28545 26.54 1469.70 1020.728 2.55 2.55 7.395 2.77682 4.28589 26.55 1469.70 1020.732 2.85 2.85 7.395 2.77687 4.28591 26.55 1469.71 1020.733 3.15 3.15 7.396 2.77700 4.28607 26.55 1469.71 1020.735 3.45 3.44 7.394 2.77722 4.28657 26.55 1469.72 1020.739 3.75 3.75 7.395 2.77675 4.28583 26.55 1469.72 1020.737 4.05 4.04 7.395 2.77710 4.28637 26.55 1469.73 1020.741 4.35 4.34 7.394 2.77681 4.28598 26.55 1469.73 1020.740 4.65 4.64 7.394 2.77681 4.28596 26.55 1469.73 1020.741 4.95 4.94 7.395 2.77706 4.28619 26.55 1469.74 1020.744 5.25 5.24 7.395 2.77645 4.28532 26.54 1469.74 1020.740 5.55 5.54 7.395 2.77690 4.28599 26.55 1469.75 1020.745 5.85 5.84 7.395 2.77705 4.28629 26.55 1469.76 1020.748 6.15 6.14 7.394 2.77705 4.28631 26.55 1469.76 1020.750 6.45 6.44 7.394 2.77683 4.28597 26.55 1469.76 1020.749 6.75 6.74 7.395 2.77667 4.28564 26.54 1469.77 1020.749 7.05 7.04 7.395 2.77697 4.28613 26.55 1469.77 1020.753 7.35 7.34 7.395 2.77703 4.28625 26.55 1469.78 1020.754 7.65 7.64 7.395 2.77724 4.28646 26.55 1469.79 1020.757 7.95 7.94 7.396 2.77728 4.28648 26.55 1469.80 1020.758 8.25 8.24 7.396 2.77759 4.28691 26.55 1469.81 1020.762 8.55 8.54 7.397 2.77720 4.28616 26.55 1469.81 1020.759 8.85 8.84 7.397 2.77814 4.28767 26.56 1469.82 1020.769 9.15 9.14 7.397 2.77774 4.28704 26.55 1469.82 1020.766 9.45 9.44 7.397 2.77756 4.28679 26.55 1469.83 1020.766 9.75 9.74 7.397 2.77802 4.28745 26.55 1469.84 1020.771 10.05 10.04 7.397 2.77818 4.28769 26.55 1469.84 1020.774 10.35 10.34 7.397 2.77811 4.28755 26.55 1469.85 1020.774 10.65 10.64 7.398 2.77815 4.28760 26.55 1469.85 1020.776 10.95 10.94 7.398 2.77803 4.28733 26.55 1469.86 1020.776 11.25 11.23 7.398 2.77829 4.28776 26.55 1469.87 1020.779 11.55 11.53 7.398 2.77869 4.28832 26.56 1469.88 1020.784 11.85 11.83 7.398 2.77834 4.28784 26.56 1469.88 1020.782 12.15 12.13 7.398 2.77837 4.28782 26.56 1469.88 1020.784 12.45 12.43 7.397 2.77841 4.28803 26.56 1469.89 1020.786 12.75 12.73 7.398 2.77769 4.28679 26.55 1469.88 1020.781 13.05 13.03 7.398 2.77839 4.28784 26.55 1469.90 1020.788 13.35 13.33 7.399 2.77809 4.28728 26.55 1469.90 1020.786 13.65 13.63 7.400 2.77858 4.28793 26.56 1469.91 1020.791 13.95 13.93 7.402 2.77945 4.28905 26.56 1469.94 1020.798 14.25 14.23 7.402 2.77937 4.28890 26.56 1469.94 1020.798 14.55 14.53 7.403 2.77976 4.28941 26.57 1469.95 1020.802 14.85 14.83 7.404 2.77967 4.28914 26.56 1469.96 1020.802 15.15 15.13 7.404 2.78036 4.29009 26.57 1469.97 1020.809 15.45 15.43 7.406 2.78068 4.29039 26.57 1469.99 1020.812 15.75 15.73 7.406 2.78087 4.29062 26.57 1470.00 1020.814 16.05 16.03 7.408 2.78086 4.29035 26.57 1470.01 1020.814 16.35 16.33 7.410 2.78095 4.29027 26.57 1470.02 1020.815 16.65 16.63 7.410 2.78210 4.29204 26.58 1470.04 1020.825 16.95 16.93 7.411 2.78281 4.29294 26.59 1470.06 1020.832 17.25 17.23 7.413 2.78338 4.29367 26.59 1470.07 1020.837 17.55 17.53 7.414 2.78333 4.29335 26.59 1470.08 1020.836 17.85 17.83 7.416 2.78339 4.29324 26.59 1470.09 1020.837 18.15 18.12 7.417 2.78333 4.29303 26.59 1470.10 1020.837 18.45 18.43 7.419 2.78447 4.29455 26.60 1470.12 1020.847 18.75 18.72 7.420 2.78447 4.29432 26.60 1470.13 1020.847 19.05 19.02 7.423 2.78510 4.29490 26.61 1470.15 1020.851 19.35 19.32 7.429 2.78678 4.29677 26.62 1470.20 1020.862 19.65 19.62 7.436 2.79184 4.30361 26.67 1470.29 1020.900 19.95 19.92 7.443 2.79343 4.30515 26.68 1470.34 1020.909 20.25 20.22 7.447 2.79657 4.30941 26.71 1470.39 1020.933 20.55 20.52 7.452 2.79954 4.31336 26.73 1470.45 1020.956 20.85 20.82 7.462 2.80129 4.31474 26.75 1470.51 1020.964 21.15 21.12 7.468 2.80200 4.31502 26.75 1470.54 1020.967 21.45 21.42 7.474 2.80506 4.31892 26.77 1470.60 1020.989 21.75 21.72 7.476 2.80740 4.32223 26.80 1470.64 1021.008 22.05 22.02 7.478 2.80924 4.32480 26.82 1470.68 1021.023 22.35 22.32 7.481 2.81002 4.32567 26.82 1470.70 1021.029 22.65 22.62 7.484 2.81156 4.32757 26.84 1470.74 1021.040 22.95 22.92 7.490 2.81724 4.33555 26.89 1470.83 1021.084 23.25 23.22 7.501 2.81981 4.33799 26.91 1470.90 1021.099 23.55 23.52 7.510 2.82597 4.34628 26.97 1471.02 1021.144 23.85 23.82 7.526 2.83847 4.36336 27.08 1471.23 1021.237 24.21 24.18 7.552 2.84551 4.37067 27.14 1471.40 1021.277