*2018/10/02 09:42:23.23 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2018/06/07 21:23:32.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 19 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 68D92A26 NUMBER OF CHANNELS : 23 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 73 91 2 Bottle_Number n/a 1 19 3 Bottle:Firing_Sequence n/a 1 19 4 Pressure:CTD dbar 5 1321.4 5 Temperature:CTD deg_C_(ITS90) 2.858 12.9801 6 Salinity:CTD PSS-78 31.7042 34.4848 7 Sigma-t:CTD kg/m^3 23.8716 27.5124 8 Transmissivity:CTD %/m 55.2 59.8 9 Oxygen:Dissolved:CTD:Volume ml/l 0.23 6.9 10 Oxygen:Dissolved:CTD:Mass µmol/kg 9.9 300.8 11 Fluorescence:CTD:Seapoint mg/m^3 0.78E-01 0.856 12 PAR:CTD µE/m^2/sec 0 188.8 13 Salinity:Bottle PSS-78 31.705 34.4503 14 Flag:Salinity:Bottle n/a 15 Oxygen:Dissolved:Bottle:Volume ml/l 0.218 6.839 16 Oxygen:Dissolved:Bottle:Mass µmol/kg 9.5 298 17 Flag:Oxygen:Dissolved:Bottle n/a 18 Nitrate_plus_Nitrite:Bottle µmol/l 0 45.61 19 Flag:Nitrate_plus_Nitrite:Bottle n/a 20 Phosphate:Bottle µmol/l 0.229 3.361 21 Flag:Phosphate:Bottle n/a 22 Silicate:Bottle µmol/l 3.05 154.06 23 Flag:Silicate:Bottle n/a $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 12 -99 ' ' 7 F ' ' 1 13 -99 ' ' 9 F R4 4 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 8 F R4 3 16 -99 ' ' 6 F ' ' 1 17 0 ' ' 3 NQ C ' ' 18 -99 ' ' 7 F R4 2 19 0 ' ' 3 NQ C ' ' 20 -99 ' ' 8 F R4 3 21 0 ' ' 3 NQ C ' ' 22 -99 ' ' 7 F R4 2 23 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2018-026 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 : P4 EVENT NUMBER : 20 LATITUDE : 48 38.99000 N ! (deg min) LONGITUDE : 126 39.99000 W ! (deg min) WATER DEPTH : 1313 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS Sample Number 75: Bottle Number 3 - valve was leaking. Sample Number 79: OXY:Bottle - analyst stated that flask number was invalid. Sample Number 91: SAL:Bottle - deleted first reading. 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 on a Guildline 8400B Salinometer standardized with IAPSO standard seawater 4 to 25 days after collection. For details on duplicate analysis see file 2018-026_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 2018-026_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 2018-026_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 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 ~4 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). Flags and comments apply to chlorophyll values only. No flags or comments are assigned for Phaeopigment values. Precision Statement: Chlorophyll values ranged from 0.02-8.79 µg/l. Average %CV for this cruise was 4.17% with 4 out of 39 duplicate pairs having a CV > 10% and 0 out of 39 duplicate pairs having a CV > 30%. Our average dataset %CV is 3.73% for 2013 - 2017 so the overall quality of this dataset is very good. For details on duplicates see file 2018-026_CHL.pdf. 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 Choromasorb 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 nmol/l, so “0” values should be interpreted as < 0.1 nmol/l. For more details see file 2018-026_DMS_report.pdf and for duplicate analysis see 2018-026_DMS.pdf. DMSP-D: 20-75 ml of seawater were drained from the Niskin into a magnetic filtration funnel containing a 0.7 µm GF/F filter. The first 3.5 ml from the funnel were collected in a polypropylene tube containing 50 µl of a 50% sulphuric acid solution. A new funnel and filter were used for each sample. DMPS-T: 3.5 ml of seawater were collected directly from the Niskin into a polypropylene tube containing 50 µl of a 50% sulphuric acid solution. 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. DMSP data are limited to 2 significant figures. For more details see file 2018-026_DMS_report.pdf and for duplicate analysis see 2018-026_DMSP.pdf. 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. Data Processing Notes: ---------------------- Transmissivity, Fluorescence and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. NOTE: While the Fluorescence:CTD data are expressed in concentration units, they do not always compare well to extracted chlorophyll samples, particularly for casts far from shore. It is recommended that users check extracted chlorophyll values where available. Oxygen:Dissolved:CTD was calibrated using the method described in Sea-Bird Application Note #64-2, June 2012 revision (Sea-Bird_64-2_Jun2012.pdf), except that a small offset in the fit was allowed. For details on the processing see the report: 2018-026-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-- --12-- ---13--- 14 ---15-- --16- 17 --18-- 19 ---20-- 21 --22-- 23 !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores PAR: Salinity Fl Oxygen: Oxyge Fl Nitrat Fl Phospha Fl Silica Fl !le_ tt tt re:CTD ure:CTD :CTD CTD missi :Disso n:Dis cence: CTD :Bottle ag Dissolv n:Dis ag e_plus ag te: ag te: ag !Numb ~u ~u vity: lved: solve CTD: ~o ed: ~ed:B ~o _Nitri ~o Bottle ~o Bottle ~o !er mb en CTD CTD: d:CTD Seapoin tt Bottle: ottle tt te: tt tt tt ! er ce Volume :Mass t le Volume :Mass le Bottle le le le !---- -- -- ------ -------- -------- -------- ----- ------ ----- ------- ------ -------- -- ------- ----- -- ------ -- ------- -- ------ -- *END OF HEADER 91 19 19 5.0 12.9770 31.7042 23.8716 55.8 6.25 272.5 0.418 188.8 31.7050 2 6.233 271.8 6 0.00 0 0.235 0 3.08 0 90 18 18 10.9 12.9801 31.7162 23.8803 55.8 6.25 272.6 0.447 98.8 -99.0000 0 6.210 270.8 0 0.01 0 0.229 0 3.05 0 89 17 17 25.1 10.9140 32.2945 24.7105 55.2 6.90 300.8 0.856 35.5 -99.0000 0 6.839 298.0 0 0.08 0 0.356 0 4.49 0 88 16 16 49.5 9.4832 32.5139 25.1215 57.9 6.53 284.2 0.726 8.4 -99.0000 0 6.523 284.1 0 3.35 0 0.619 0 6.15 0 87 15 15 75.3 8.7761 33.1079 25.6975 58.9 4.58 199.3 0.436 2.0 -99.0000 0 4.592 199.9 0 17.24 0 1.445 0 17.87 0 86 14 14 100.3 8.5574 33.6232 26.1349 59.1 3.36 146.0 0.172 0.6 -99.0000 0 3.379 147.0 0 25.05 0 1.889 0 28.51 0 85 13 13 124.7 8.2213 33.8295 26.3476 59.2 3.16 137.4 0.102 0.2 -99.0000 0 3.147 136.9 0 27.34 6 2.001 6 32.89 6 84 12 12 149.9 7.8500 33.8889 26.4492 59.2 3.07 133.4 0.098 0.0 -99.0000 0 3.010 130.9 0 28.45 0 2.082 0 36.70 0 83 11 11 174.5 7.6364 33.9229 26.5069 58.9 2.70 117.3 0.091 0.0 -99.0000 0 2.731 118.8 6 30.01 0 2.199 0 40.64 0 82 10 10 199.6 7.3514 33.9386 26.5598 59.1 2.55 110.9 0.088 0.0 -99.0000 0 2.550 110.9 0 31.21 0 2.283 0 44.15 0 81 9 9 250.6 6.7746 33.9744 26.6673 59.3 2.00 86.9 0.085 0.0 -99.0000 0 2.000 87.0 0 34.66 0 2.531 0 53.20 0 80 8 8 299.4 6.3325 33.9899 26.7379 59.5 1.73 75.0 0.085 0.0 -99.0000 0 1.718 74.7 0 36.39 0 2.666 0 59.41 0 79 7 7 400.6 5.6249 34.0361 26.8632 59.6 1.13 49.0 0.083 0.0 -99.0000 0 -99.000 -99.0 1 40.10 0 2.940 0 72.76 0 78 6 6 600.4 4.7631 34.1713 27.0709 59.5 0.43 18.6 0.079 0.0 -99.0000 0 0.427 18.6 0 43.37 6 3.244 6 96.14 6 77 5 5 800.2 4.1278 34.2959 27.2386 59.2 0.23 9.9 0.079 0.0 34.2941 0 0.218 9.5 0 44.67 0 3.361 0 115.80 0 76 4 4 1000.2 3.5916 34.3834 27.3626 59.6 0.24 10.3 0.079 0.0 34.3819 6 0.227 9.9 0 45.45 0 3.320 0 131.71 0 75 3 3 1250.4 3.1320 34.4507 27.4602 59.8 0.37 16.2 0.079 0.0 34.4496 26 0.373 16.2 36 45.37 2 3.358 2 145.22 2 74 2 2 1250.3 3.1314 34.4508 27.4603 59.8 0.38 16.3 0.078 0.0 34.4503 0 0.380 16.5 0 45.61 0 3.360 0 145.31 0 73 1 1 1321.4 2.8580 34.4848 27.5124 57.2 0.50 21.9 0.078 0.0 -99.0000 0 0.468 20.3 0 45.09 0 3.332 0 154.06 0