*2022/11/09 12:20:52.13 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2015/06/17 04:56:03.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 24 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 3DC37AAA NUMBER OF CHANNELS : 11 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 507 530 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 4.9 4318 5 Temperature:CTD deg_C_(ITS90) 1.5033 10.5281 6 Salinity:CTD PSS-78 32.5449 34.6838 7 Sigma-t:CTD kg/m^3 24.9723 27.7807 8 Transmissivity:CTD %/m 49 66.2 9 Oxygen:Dissolved:CTD:Volume ml/l 0.44 7.05 10 Oxygen:Dissolved:CTD:Mass µmol/kg 19.2 306.8 11 Fluorescence:CTD:Seapoint mg/m^3 0.8E-01 4.588 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ---- -------------- 1 -99 ' ' 5 I I 0 2 -99 ' ' 3 I I 0 3 -99 ' ' 3 I I 0 4 -99 ' ' 7 F ' ' 1 5 -99 ' ' 9 F ' ' 4 6 -99 ' ' 9 F ' ' 4 7 -99 ' ' 9 F R4 4 8 -99 ' ' 6 F ' ' 1 9 -99 ' ' 7 F ' ' 2 10 -99 ' ' 6 F ' ' 1 11 -99 ' ' 8 F ' ' 3 $END *ADMINISTRATION MISSION : 2015-009 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : P26 EVENT NUMBER : 87 LATITUDE : 49 59.99000 N ! (deg min) LONGITUDE : 144 59.98000 W ! (deg min) WATER DEPTH : 4250 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0506 LOCATION : Mid-ship ! custom item *COMMENTS Analysis methods: ----------------- 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 13 to 37 days after collection. For details on duplicate analysis see file 2015-009_SAL.pdf. Oxygen samples were analyzed at sea using an automated Winkler titration system (Metrohm Dosimat model 876 and a UV light source and detector with a 365nm filter controlled by LV02_876 software designed and constructed by Scripps Institution of Oceanography) with modifications based on Carpenter (1965) and adhering to WOCE protocols (Culberson 1991). For details on duplicate analysis see file 2015-009_OXY.pdf. Nutrient samples were collected in plastic tubes. One set of samples was collected and immediately quick frozen in aluminum blocks stored in -20 freezer. Another set of samples from 400 dbar and deeper (to be used for silicate analysis) was collected and stored at 4C in the dark. All samples were returned to IOS for analysis using an Astoria analyzer following methods described in IOS Nutrient Methods (1996) Barwell-Clarke and Whitney. For precision and duplicate analysis see file 2015-009_NUT.pdf. Chlorophyll samples were filtered onto 25mm GF/F filters and stored in glass scintillation vials at -80C prior to analysis. Samples were extracted in 90% acetone at -20C for 24 hours and analyzed on a Turner 10AU fluorometer calibrated annually 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 ~3 weeks after the cruise. When duplicate samples were collected the average of two samples is reported. Variability is assessed as the CV (std dev / mean*100). For details on duplicates see file 2015-009_CHL.pdf. Flags and comments apply to chlorophyll values only. No flags or comments are assigned for Phaeopigment values. DMS samples were collected in 250 ml ground glass stoppered bottles and stored in a fridge, in the dark and removed one at a time before analysis. A sample was loaded onto the stripper and purged with UHP Nitrogen for 10 minutes at ~100 ml/min. The DMS was extracted from the water and absorbed on to a Tenax TA trap kept at -80C. The trap was subsequently desorbed at 100C (with a Dewar containing boiling water) onto a Chromasorb 330 column which eluted onto a Flame Photometric Detector (FPD). All samples were run as soon as possible after being collected. The minimum detectable level for DMS is 0.10 nM, so “0” values should be interpreted as <0.10 nmol/l. For more details see file 2015-009_DMS_report.pdf and for duplicate analysis see 2015-009_DMS.pdf. DMSP-D: Approximately 20-75 ml of seawater were allowed to flow directly from the Niskin into a filtration funnel containing a 0.7 µm GF/F filter. The first 3.5 ml were collected in a polypropylene tube (15 ml) containing 50 µl of a 50% sulphuric acid solution. DMSP-T: 3.5 ml of seawater were collected directly from the Niskin into a polypropylene tube (15 ml) containing 50 µl of a 50% sulphuric acid solution (50%). DMSP-D and DMSP-T: Samples were stored in the dark at 4 degrees C for a minimum of 24 hours. They were hydrolized and analyzed later at the Institute of Ocean Sciences. The minimum detectable level is 0.1 nmol/l, so “0” values should be interpreted as < 0.1 nmol/l. For more details on analysis see file 2015-009_DMS_report.pdf. Dissolved inorganic carbon (DIC) was determined using coulometric analysis of unfiltered samples. Total alkalinity (Alk) was determined by potentiometric titration. pH on the total hydrogen ion concentration scale was determined photometrically and is reported at 25C and surface pressure. HPLC samples were filtered onto 47mm GF/F filters and stored at -80C prior to analysis. Samples were extracted in 95% methanol at -20C for 24 hours and analyzed on a WATERS 2695 HPLC separations system as detailed in Nemcek and Pena, 2014. Analysis was performed 4 to 6 weeks after collection. The average of two samples is reported. Variability is assessed as the CV (std dev/mean*100) for duplicate pairs. All pigments below the limit of detection (LOD) are assigned a zero value. TChl-a is the sum of Chl-a, DVchl-a, Chlide-a and Me-chlide. References: 1. 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. 2. Carpenter, J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr., 10: 141-143. 3. Culberson, C.H. 1991. Dissolved oxygen. WOCE Hydrographic Programme Operations and Methods (July 1991). 15pp. 4. 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. 5. Nemcek, N. and Peña, M.A. 2014. Institute of Ocean Sciences Protocols for Phytoplankton Pigment Analysis by HPLC. Can. Tech. Rep. Fish. Aquat. Sci. 3117: x + 80 p. Data Processing Notes: ---------------------- Transmissivity, Fluorescence and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. For details on how the transmissivity calibration parameters were calculated see the document Transmissivity_Calculation.pdf. Oxygen:Dissolved:CTD was calibrated using the method described in the Sea-Bird Application Note #64-2 of June 2012 (Sea-Bird_64-2_Jun2012.pdf), except that a small offset in the fit was allowed. For details on the processing see the report: 2015-009-proc.pdf. $REMARKS Quality flags have the following significance: ---------------------------------------------------------------------------------- 0 = Acceptable measurement with no header comment. 1 = Sample for this measurement was collected but not analyzed. Sample lost. 2 = Acceptable measurement with header comment. 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 !-1-- 2- 3- --4--- ---5---- ---6---- ---7---- --8-- --9--- --10- ---11-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores !le_ tt tt re:CTD ure:CTD :CTD CTD missi :Disso n:Dis cence: !Numb ~u ~u vity: lved: solve CTD: !er mb en CTD CTD: d:CTD Seapoin ! er ce Volume :Mass t !---- -- -- ------ -------- -------- -------- ----- ------ ----- ------- *END OF HEADER 530 24 24 4.9 10.5259 32.5453 24.9730 51.6 6.63 288.9 2.231 529 23 23 9.7 10.5281 32.5449 24.9723 51.7 6.63 288.6 2.232 528 22 22 24.9 9.2537 32.5604 25.1944 49.0 6.92 301.4 4.588 527 21 21 50.0 7.1482 32.5919 25.5282 62.2 7.05 306.8 0.996 526 20 20 75.0 6.6361 32.6346 25.6296 64.5 6.81 296.6 0.434 525 19 19 99.7 5.6945 33.4262 26.3724 65.1 4.91 213.7 0.249 524 18 18 124.9 5.2089 33.7322 26.6720 65.3 3.80 165.2 0.124 523 17 17 150.3 4.8985 33.7507 26.7221 65.3 3.47 151.0 0.121 522 16 16 174.8 4.5319 33.7589 26.7689 65.3 3.12 135.7 0.108 521 15 15 200.0 4.2647 33.7797 26.8139 65.5 2.75 119.7 0.099 520 14 14 249.3 4.0103 33.8379 26.8864 65.7 2.11 91.7 0.098 519 13 13 299.8 3.9188 33.9043 26.9486 65.8 1.61 70.1 0.097 518 12 12 399.3 3.8470 33.9930 27.0264 65.9 1.22 52.9 0.090 517 11 11 599.9 3.5860 34.1804 27.2014 66.0 0.61 26.6 0.085 516 10 10 800.2 3.2729 34.3009 27.3275 66.0 0.53 22.9 0.085 515 9 9 1000.2 2.9035 34.3771 27.4223 66.0 0.49 21.5 0.085 514 8 8 1250.1 2.5753 34.4505 27.5098 66.1 0.44 19.2 0.085 513 7 7 1500.1 2.3137 34.5063 27.5765 66.1 0.58 25.4 0.084 512 6 6 1999.5 1.9543 34.5815 27.6657 66.2 1.26 54.8 0.084 511 5 5 2500.2 1.7156 34.6286 27.7218 66.2 1.95 84.6 0.084 510 4 4 3000.2 1.5799 34.6558 27.7538 66.2 2.51 109.0 0.084 509 3 3 3500.1 1.5132 34.6719 27.7716 66.2 2.91 126.5 0.083 508 2 2 4000.3 1.5033 34.6805 27.7793 66.1 3.14 136.6 0.081 507 1 1 4318.0 1.5193 34.6838 27.7807 65.0 3.19 138.8 0.080