*2018/06/20 10:16:28.43 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2018/02/26 16:22:04.000 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 : A3CF397A NUMBER OF CHANNELS : 22 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 227 250 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 4.7 4315.6 5 Temperature:CTD deg_C_(ITS90) 1.5026 5.8816 6 Salinity:CTD PSS-78 32.5024 34.6816 7 Sigma-t:CTD kg/m^3 25.6196 27.7785 8 Transmissivity:CTD %/m 43.8 61.3 9 Oxygen:Dissolved:CTD:Volume ml/l 0.4 7.15 10 Oxygen:Dissolved:CTD:Mass µmol/kg 17.2 311.1 11 Fluorescence:CTD:Seapoint mg/m^3 0.57E-01 1.154 12 Salinity:Bottle PSS-78 32.505 34.6695 13 Flag:Salinity:Bottle n/a 14 Oxygen:Dissolved:Bottle:Volume ml/l 0.393 7.086 15 Oxygen:Dissolved:Bottle:Mass µmol/kg 17.1 308.5 16 Flag:Oxygen:Dissolved:Bottle n/a 17 Nitrate_plus_Nitrite:Bottle µmol/l 14.46 43.65 18 Flag:Nitrate_plus_Nitrite:Bottle n/a 19 Phosphate:Bottle µmol/l 1.32 3.155 20 Flag:Phosphate:Bottle n/a 21 Silicate:Bottle µmol/l 21.32 170.81 22 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 ' ' 9 F R4 4 13 0 ' ' 3 NQ C ' ' 14 -99 ' ' 8 F R4 3 15 -99 ' ' 6 F ' ' 1 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 7 F R4 2 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 8 F R4 3 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 7 F R4 2 22 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2018-001 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : Sir Wilfrid Laurier *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : P26 EVENT NUMBER : 53 LATITUDE : 49 59.84000 N ! (deg min) LONGITUDE : 144 59.94000 W ! (deg min) WATER DEPTH : 4250 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 *COMMENTS Sample Number 229: SIL:Bottle - value appears low relative to profile. Sample Number 236: OXY:Bottle - one duplicate had an odd titration curve. Sample over-titrated and value recalculated but it was quite high (0.880 ml/l). Not reported. Samples Number 237 and 249: Bottles Number 11 and 23 - bottom cap was leaking. 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 within 13 - 30 days after collection. For details on duplicate analysis see file 2018-001_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 2018-001_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 2018-001_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 0.01-8.51 µg/l. Average %CV for this cruise was 3.86% with 3 out of 56 duplicate pairs having a CV > 10% and 0 out of 56 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 2018-001_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 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 nmol/l, so “0” values should be interpreted as < 0.1 nmol/l. For more details see file 2018-001_DMS_report.pdf and for duplicate analysis see 2018-001_DMS.pdf. DMSP-D: 20-75 ml of seawater were allowed to flow directly from the Niskin into a magnetic filtration funnel containing a 0.7 µm GF/F filter. The first 3.5 ml were collected in a polypropylene tube containing 50 µl of a 50% sulphuric acid solution. 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. For more details see file 2018-001_DMS_report.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: 2018-001-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 !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores 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: :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 250 24 24 4.7 5.8816 32.5024 25.6196 43.9 7.13 310.5 0.757 32.5050 0 7.061 307.4 0 14.46 0 1.321 0 21.34 0 249 23 23 9.8 5.8783 32.5026 25.6202 43.8 7.14 311.0 1.059 -99.0000 0 7.064 307.5 3 14.51 0 1.322 0 21.38 0 248 22 22 24.6 5.8788 32.5028 25.6203 44.0 7.15 311.1 1.154 -99.0000 0 7.044 306.7 0 14.58 0 1.320 0 21.32 0 247 21 21 50.0 5.8795 32.5030 25.6203 44.1 7.12 309.9 1.115 -99.0000 0 7.061 307.4 6 14.63 0 1.327 0 21.46 0 246 20 20 74.2 5.8798 32.5033 25.6205 44.7 7.09 308.8 1.111 -99.0000 0 7.086 308.5 0 14.51 6 1.327 6 21.35 6 245 19 19 100.2 5.8601 32.5089 25.6273 45.7 7.02 305.7 0.973 -99.0000 0 7.005 305.0 0 14.60 0 1.324 0 21.49 0 244 18 18 124.1 4.6168 33.3426 26.4293 48.2 4.83 209.9 0.103 -99.0000 0 4.828 210.0 0 26.06 0 1.977 0 42.37 0 243 17 17 149.4 4.4376 33.6252 26.6729 48.4 3.91 170.1 0.080 -99.0000 0 3.895 169.4 0 30.24 0 2.221 0 53.57 0 242 16 16 174.4 4.2331 33.6737 26.7329 48.8 3.52 153.2 0.077 -99.0000 0 3.531 153.6 6 32.13 0 2.349 0 59.14 0 241 15 15 200.3 4.1124 33.7216 26.7835 49.4 3.04 132.4 0.073 -99.0000 0 3.046 132.5 0 34.24 0 2.481 0 65.58 0 240 14 14 250.0 4.0629 33.8154 26.8632 49.5 2.17 94.4 0.072 -99.0000 0 2.189 95.2 0 37.37 0 2.693 0 75.78 0 239 13 13 300.7 4.0166 33.8793 26.9187 49.7 1.65 71.9 0.072 -99.0000 0 1.674 72.8 0 39.37 0 2.822 0 83.45 0 238 12 12 400.1 4.0291 34.0230 27.0318 50.2 1.19 51.6 0.069 -99.0000 0 1.190 51.7 0 40.38 0 2.926 0 95.71 0 237 11 11 599.1 3.6745 34.1824 27.1943 51.6 0.70 30.4 0.067 -99.0000 0 0.708 30.8 3 41.77 0 3.042 0 114.97 0 236 10 10 799.2 3.3299 34.2903 27.3137 51.9 0.55 23.8 0.067 -99.0000 0 0.550 23.9 2 42.59 0 3.087 0 128.91 0 235 9 9 1000.2 2.9777 34.3680 27.4083 53.2 0.43 18.9 0.066 34.3675 0 0.446 19.4 0 43.25 0 3.134 0 141.09 0 234 8 8 1250.6 2.6141 34.4439 27.5012 53.9 0.40 17.2 0.066 34.4429 0 0.393 17.1 0 43.65 0 3.155 0 154.03 0 233 7 7 1501.1 2.3348 34.5000 27.5697 54.2 0.57 24.9 0.064 34.5009 0 0.578 25.1 0 43.05 0 3.112 0 162.26 0 232 6 6 2001.4 1.9774 34.5758 27.6593 55.4 1.18 51.3 0.062 -99.0000 0 1.185 51.5 0 41.78 0 2.990 0 169.39 0 231 5 5 2500.7 1.7457 34.6222 27.7144 57.2 1.86 80.7 0.060 34.6199 6 1.865 81.0 0 40.05 6 2.856 6 170.81 6 230 4 4 2999.0 1.5897 34.6527 27.7506 60.9 2.48 107.6 0.059 -99.0000 0 2.487 108.0 0 38.16 0 2.718 0 168.97 0 229 3 3 3500.4 1.5195 34.6695 27.7692 61.3 2.90 125.8 0.058 34.6695 6 2.901 126.0 6 37.09 0 2.621 0 164.87 3 228 2 2 3999.6 1.5026 34.6795 27.7785 61.1 3.14 136.3 0.057 -99.0000 0 3.146 136.7 0 36.68 0 2.560 0 167.26 0 227 1 1 4315.6 1.5258 34.6816 27.7785 60.7 3.17 137.9 0.057 -99.0000 0 3.191 138.6 0 36.38 0 2.560 0 168.98 0