*2019/08/26 15:30:12.23 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/10/20 17:24:31.000 END TIME : UTC 2016/10/20 17:24:43.400 TIME INCREMENT : 0 0 0 0 200 ! (day hr min sec ms) TIME UNITS : Milliseconds NUMBER OF RECORDS : 63 DATA DESCRIPTION : CTD NUMBER OF CHANNELS : 8 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 0.15 18.77 2 Depth metres 0.15 19.01 3 Temperature 'deg C (ITS90)' 10.57 10.66 4 Conductivity S/m 0.769E-02 2.23707 5 Conductance:Specific S/m 0.1078E-01 3.14415 6 Salinity PSS-78 0.5E-01 19.15 7 Speed:Sound m/s 1449.88 1473.07 8 Density kg/m^3 999.684 1014.615 $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 : 421 LATITUDE : 49 7.01194 N ! (deg min) LONGITUDE : 123 4.98446 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 22:54:04 63 63 HDREDIT2 3.1.1 2017/12/13 11:31:15 ? ? CALIB 12.0 2019/08/26 15:30:12 63 63 $END $REMARKS -READ_CHS_CTDS processing: 2017/12/08 22:54:04 -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_172431 % Cast time (UTC),2016-10-20 17:24:31 % Cast time (local),2016-10-20 17:24:31 % Sample type,Cast % Cast data,Processed % Location source,GPS % Default latitude,32 % Default altitude,0 % Start latitude,49.1168657 % Start longitude,-123.0830744 % Start altitude,-16.430000305175781 % Start GPS horizontal error(Meter),1.7100000381469727 % Start GPS vertical error(Meter),2.8499999046325684 % Start GPS number of satellites,9 % End latitude, % End longitude, % End altitude, % End GPS horizontal error(Meter), % End GPS vertical error(Meter), % End GPS number of satellites, % Cast duration (Seconds),64.6 % 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 10.644 0.00773 0.01084 0.05 1449.88 999.684 0.45 0.46 10.643 0.00775 0.01087 0.05 1449.89 999.685 0.75 0.77 10.644 0.00770 0.01081 0.05 1449.89 999.686 1.05 1.07 10.647 0.00774 0.01086 0.05 1449.91 999.688 1.35 1.38 10.649 0.00779 0.01092 0.05 1449.92 999.689 1.65 1.68 10.653 0.00783 0.01098 0.05 1449.94 999.691 1.95 1.99 10.660 0.00774 0.01085 0.05 1449.97 999.691 2.25 2.29 10.660 0.00771 0.01081 0.05 1449.98 999.692 2.55 2.60 10.658 0.00769 0.01078 0.05 1449.98 999.694 2.85 2.91 10.659 0.00774 0.01085 0.05 1449.98 999.695 3.15 3.21 10.657 0.00774 0.01085 0.05 1449.98 999.697 3.45 3.52 10.653 0.00775 0.01087 0.05 1449.97 999.699 3.75 3.82 10.649 0.00799 0.01120 0.05 1449.96 999.702 4.05 4.13 10.648 0.00850 0.01192 0.06 1449.97 999.706 4.35 4.44 10.648 0.01033 0.01449 0.07 1449.99 999.717 4.65 4.74 10.647 0.01864 0.02614 0.12 1450.06 999.761 4.95 5.05 10.646 0.03195 0.04482 0.21 1450.17 999.833 5.25 5.35 10.644 0.05155 0.07231 0.35 1450.34 999.941 5.55 5.66 10.643 0.09058 0.12707 0.63 1450.68 1000.161 5.85 5.96 10.642 0.15413 0.21622 1.09 1451.26 1000.527 6.15 6.27 10.641 0.23542 0.33027 1.71 1452.02 1001.008 6.45 6.58 10.641 0.28362 0.39788 2.08 1452.48 1001.300 6.75 6.88 10.639 0.34561 0.48487 2.56 1453.08 1001.679 7.05 7.19 10.637 0.45732 0.64164 3.45 1454.16 1002.373 7.35 7.49 10.636 0.60945 0.85510 4.69 1455.67 1003.338 7.65 7.80 10.634 0.74672 1.04776 5.83 1457.06 1004.226 7.95 8.10 10.633 0.86175 1.20922 6.80 1458.23 1004.981 8.25 8.40 10.630 0.97863 1.37332 7.80 1459.44 1005.758 8.55 8.71 10.629 1.05930 1.48655 8.49 1460.28 1006.299 8.85 9.01 10.627 1.10354 1.54874 8.88 1460.74 1006.598 9.15 9.32 10.625 1.12888 1.58441 9.10 1461.00 1006.771 9.45 9.62 10.622 1.18399 1.66190 9.58 1461.57 1007.146 9.75 9.92 10.618 1.24409 1.74642 10.11 1462.20 1007.557 10.05 10.23 10.617 1.27549 1.79057 10.38 1462.54 1007.773 10.35 10.53 10.616 1.33093 1.86844 10.87 1463.13 1008.154 10.65 10.83 10.615 1.34987 1.89509 11.04 1463.33 1008.286 10.95 11.14 10.613 1.36238 1.91276 11.15 1463.46 1008.374 11.25 11.44 10.612 1.39597 1.96000 11.45 1463.82 1008.607 11.55 11.74 10.611 1.46735 2.06027 12.09 1464.59 1009.102 11.85 12.05 10.608 1.51201 2.12314 12.49 1465.07 1009.414 12.15 12.35 10.606 1.55721 2.18676 12.89 1465.55 1009.731 12.45 12.65 10.604 1.58820 2.23040 13.17 1465.89 1009.949 12.75 12.96 10.602 1.73055 2.43042 14.46 1467.43 1010.950 13.05 13.26 10.599 1.83899 2.58295 15.45 1468.62 1011.719 13.35 13.56 10.597 1.83786 2.58152 15.44 1468.61 1011.714 13.65 13.86 10.593 1.84275 2.58866 15.49 1468.65 1011.751 13.95 14.16 10.592 1.84414 2.59066 15.50 1468.67 1011.763 14.25 14.47 10.592 1.89926 2.66806 16.01 1469.28 1012.156 14.55 14.77 10.590 1.91750 2.69384 16.18 1469.48 1012.288 14.85 15.07 10.589 1.94067 2.72652 16.39 1469.74 1012.456 15.15 15.37 10.587 1.93211 2.71463 16.31 1469.64 1012.397 15.45 15.67 10.585 2.00108 2.81171 16.95 1470.41 1012.892 15.75 15.98 10.583 2.05281 2.88451 17.43 1470.98 1013.266 16.05 16.28 10.581 2.08312 2.92728 17.71 1471.32 1013.486 16.35 16.58 10.581 2.10978 2.96475 17.96 1471.62 1013.679 16.65 16.88 10.583 2.14103 3.00849 18.25 1471.98 1013.905 16.95 17.18 10.584 2.14247 3.01044 18.26 1472.01 1013.917 17.25 17.48 10.582 2.21034 3.10596 18.89 1472.77 1014.410 17.55 17.79 10.579 2.23382 3.13928 19.12 1473.02 1014.584 17.85 18.09 10.574 2.23466 3.14087 19.13 1473.02 1014.594 18.15 18.39 10.572 2.23596 3.14288 19.14 1473.04 1014.605 18.45 18.69 10.570 2.23601 3.14310 19.14 1473.04 1014.608 18.77 19.01 10.575 2.23707 3.14415 19.15 1473.07 1014.615