*2017/08/03 11:38:46.95 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2016/02/27 17:17:00.000 NUMBER OF RECORDS : 2 DATA DESCRIPTION : Bottle:Wire + CTD:Down FILE TYPE : ASCII NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 12 13 2 Pressure:CTD decibar 1.3 5 3 Depth:CTD metres 1.3 5 4 Temperature:CTD 'deg C (ITS90)' 8.5952 8.6043 5 Salinity:CTD PSS-78 28.7428 28.8503 6 Oxygen:Dissolved:Volume:CTD mL/L 5.47 5.5 7 Oxygen:Dissolved:Mass:CTD umol/kg 239 240.3 8 Depth:Nominal metres 0 5 9 Chlorophyll:Extracted mg/m^3 0.66 0.92 10 Flag:Chlorophyll:Extracted ' ' $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I 0 2 -99 ' ' 7 F R4 1 3 -99 ' ' 7 F R4 1 4 -99 ' ' 9 F R4 4 5 -99 ' ' 9 F R4 4 6 -99 ' ' 7 F R4 2 7 -99 ' ' 6 F R4 1 8 ' ' ' ' 6 F R4 0 9 -99 ' ' 7 F R4 2 10 ' ' ' ' 3 NQ C ' ' $END $REMARKS Flag channels were initialized with zeros. Non-zero values have the following significance: ---------------------------------------------------------------------------------- 1 = Sample for this measurement was collected but not analyzed. Sample lost. 2 = Acceptable Measurement 3 = Questionable Measurement (Probably Good) 4 = Poor Measurement (Probably Bad) 5 = Measurement Not Reported (Bad) 6 = Mean of replicate measurements 7 = Manual chromatographic peak measurement 8 = Irregular digital chromatographic peak integration 9 = Sample was planned for this measurement from this bottle but was not collected ---------------------------------------------------------------------------------- $END *ADMINISTRATION MISSION : 2016-09 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. PROJECT : Strait of Georgia Zooplankton SCIENTIST : Young K. PLATFORM : Salacia *LOCATION STATION : SC-04 EVENT NUMBER : 35 LATITUDE : 48 43.46000 N ! (deg min) LONGITUDE : 123 25.02000 W ! (deg min) WATER DEPTH : 90 *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! -------- ------ ---------- -------- --------- --------- SPRD2IS 5.0 2017/02/28 08:52:26 2 2 CLEAN 5.2.2 2017/02/28 08:53:06 2 2 REMOVECH 8.2 2017/02/28 08:53:19 2 2 HDREDIT2 3.1.1 2017/02/28 09:01:49 ? ? HDREDIT2 3.1.1 2017/08/03 11:38:46 ? ? $END $REMARKS -CLEAN functions: 2017/02/28 08:53:05 20 Reset #RECS, MIN & MAX values in header. Change character data from " " to "0" in channels Flag:* Delete Empty Channels: 3 deleted. Set event to last 4 characters of file name Set header Start and End times from the data. -REMOVECH 2017/02/28 08:53:19 The following CHANNEL(S) were removed: Date TIME:UTC -HEADER EDITS: 2017/02/28 09:01:49 Applied edit header: P:\Cruise_Data_Processing\2016-09\Processing\doc\HYDRO\2016-09-bot-hdr1.txt Channel 2: Pressure:CTD [decibar] Format: F9.4 ==> F7.1 Channel 6: Oxygen:Dissolved:Volume:CTD [mL/L] Format: F9.4 ==> F7.2 Channel 7: Oxygen:Dissolved:Mass:CTD [umol/kg] Format: F7.2 ==> F6.1 -HEADER EDITS: 2017/08/03 11:38:46 Applied edit header: C:\Users\hourstonr\Desktop\iosshell\2016-09-0001.hdr $END *COMMENTS Salinity samples were gathered at the bottom of CTD casts using a Niskin bottle attached about 1m above the CTD. Extracted chlorophyll samples were mostly taken at the end of CTD casts, but for the Halibut Bank casts there were no CTD casts. Analysis methods: ----------------- Chlorophyll samples were filtered onto 25mm GF/F filters and stored in glass scintillation vials at -20C prior to analysis. Samples were extracted in 90% acetone at -20C for 24 hours in the lab and analyzed on a Turner 10AU fluorometer calibrated with commercially pure chlorophyll a standard (Sigma). Fluorescence readings taken before and after acidification were used to calculate chlorophyll and phaeopigment concentrations (Holm-Hansen et al 1965). Chlorophyll samples were analyzed at IOS in Room 2423 up to 6 weeks after each leg of the cruise. The average of two samples is reported. Variability is assessed as the CV% (std dev / mean*100). Flags and comments apply to chlorophyll values only. Precision Statement: Chlorophyll values ranged from 0.38-30.46 ug/l. Average %CV for this cruise was 11.31% with 11 out of 40 duplicate pairs having a CV>15% and 1 out of 40 duplicate pairs having a CV>50%. Our average dataset %CV is 2.83 % for 2013 - 2015. These samples were small volume to allow syringe filtration which likely affected variance. For details see worksheet “CV%” in file QF2016-09CHL*.xlsx. Salinity samples were collected in 200 mL type ll glass bottles with disposable nylon inserts and screw caps supplied by Ocean Scientific International Limited. They were analyzed in a temperature-controlled lab at IOS on a Guildline 8400B Salinometer (S/N 68572) standardized with IAPSO standard seawater approximately 5 to 8 days after collection. For details see documents QF2016-09_TRIP 1 SAL*.xlsx. References: 1. Barwell-Clarke, J. and Whitney, F. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. 2. Holm-Hansen, O., Lorenzen, C.J., Holmes, R.W., and Strickland J.D.H. 1965. Fluorometric Determination of Chlorophyll. J.du Cons. Intl. Pour l’Epl. De la Mer. 30:3-15. * For PDF versions of these papers see folder \\Cruise_Data\DOCUMENTS\Analysis Reference Papers --------------------------------------------------------------------------------- CTD Data Processing Notes: -------------------------- The CTD data were taken from downcast data. For salinity samples the data were taken from the bottom of casts after editing and metre-averaging, so the mismatch in depth should be <1m. For extracted CHL samples the CTD data at 1m and 5m were used where available. For cast #223 there were no CTD data at 1m, so 2m data were reported. In some cases there was no CTD sampling at either 1 or 2m so no CTD values are reported for the surface sample. Salinity calibration sampling suggests CTD salinity calibration errors are <0.005psu. No recalibration was applied to these data. There is some suggestion that the CTD fluorometer was reading lower than usual, but the high variability in both fluorescence and extracted chlorophyll and the mismatches in height and time make this a weak conclusion. There has been no dissolved oxygen calibration sampling for this sensor on any of the 5 cruises since it was last serviced at the factory. For details on the processing see the report: 2016-09_Processing_Report.doc. NOTE: FLuorescence was removed from this cast because the cap was left on. --------------------------------------------------------------------------------- !-1-- --2--- --3--- ---4---- ---5---- --6--- --7-- --8-- --9--- 10 !Samp Pressu Depth: Temperat Salinity Oxygen Oxyge Depth Chloro Fl !le_ re:CTD CTD ure:CTD :CTD :Disso n:Dis : phyll: ag !Numb lved: solve Nomin Extrac ~a !er Volume d:Mas al ted ct ! :CTD s:CTD ed !---- ------ ------ -------- -------- ------ ----- ----- ------ -- *END OF HEADER 12 1.3 1.3 8.5952 28.7428 5.50 240.3 0. 0.92 6 13 5.0 5.0 8.6043 28.8503 5.47 239.0 5. 0.66 6