*2021/05/31 15:27:51.88 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2019/08/23 14:20:36.000 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 : 884FC899 NUMBER OF CHANNELS : 23 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 711 734 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 4.7 4318 5 Temperature:CTD deg_C_(ITS90) 1.5069 15.2962 6 Salinity:CTD PSS-78 32.394 34.6812 7 Sigma-t:CTD kg/m^3 23.9272 27.7784 8 Transmissivity:CTD:650 %/m 41.3 55.7 9 Transmissivity:CTD:530 %/m 58.7 86.7 10 Oxygen:Dissolved:CTD:Volume ml/l 0.38 6.54 11 Oxygen:Dissolved:CTD:Mass µmol/kg 16.4 284.6 12 Fluorescence:CTD:Seapoint mg/m^3 0.11 2.303 13 Salinity:Bottle PSS-78 34.354 34.6786 14 Flag:Salinity:Bottle n/a 15 Oxygen:Dissolved:Bottle:Volume ml/l 0.372 6.536 16 Oxygen:Dissolved:Bottle:Mass µmol/kg 16.2 284.6 17 Flag:Oxygen:Dissolved:Bottle n/a 18 Nitrate_plus_Nitrite:Bottle µmol/l 0.24 44.81 19 Flag:Nitrate_plus_Nitrite:Bottle n/a 20 Phosphate:Bottle µmol/l 0.467 3.208 21 Flag:Phosphate:Bottle n/a 22 Silicate:Bottle µmol/l 7.92 176.3 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 ' ' 6 F ' ' 1 10 -99 ' ' 7 F ' ' 2 11 -99 ' ' 6 F ' ' 1 12 -99 ' ' 8 F ' ' 3 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 : 2019-008 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 : 90 LATITUDE : 50 0.12000 N ! (deg min) LONGITUDE : 144 59.96000 W ! (deg min) WATER DEPTH : 4249 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0506 LOCATION : Mid-ship ! custom item *COMMENTS Sample Number 716: SAL:Bottle - identified as an outlier when compared with the CTD salinity sensors. Sample Number 733: OXY:Bottle - endpoint was late. Sample over-titrated. Sample Number 734: OXY:Bottle - endpoint was late. Sample over-titrated. Value was high when compared to the CTD oxygen sensor. Unclear whether or not the analysis was a problem. 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 13 - 25 days after collection. For details on duplicate analysis see file 2019-008_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 2019-008_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 2019-008_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 ~2 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 0.03-10.66 µg/l in 115 samples. Average %CV for this cruise was 2.80% with 0 out of 35 duplicate pairs having a CV > 10% and 0 duplicate pairs having a CV > 30%. Our average dataset %CV is 3.80% for 2013 - 2018 so the overall quality of this dataset is excellent. For details on duplicates see file 2019-008_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 Chromosil 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. DMS data are limited to 2 significant figures. Unless otherwise indicated the % relative difference between duplicates is < 20%. For more details see file 2019-008_DMS_report.pdf and for duplicate analysis see 2019-008_DMS.pdf. DMSP-D: Approximately 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 (15 ml) containing 50 µl of a 50% sulphuric acid solution. A new funnel and filter were used for each sample. Samples were hydrolized and run at IOS when time permitted. 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. 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. Unless otherwise indicated the % relative difference between duplicates is < 20%. For more details see file 2019-008_DMS_report.pdf and for duplicate analysis see 2019-008_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. There were 2 WetLabs CStar transmissometers in use during this cruise: Transmissometer:CTD:650 refers to sensor #1185DR (650nm - red) Transmissometer:CTD:530 refers to sensor #1883DG (530nm - green) For comparison with other Institute of Ocean Sciences cruises, note that the transmissometer wavelength is 650 nm unless otherwise stated. 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. For details on the processing see the report: 2019-008-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 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 missi :Disso n:Dis cence: :Bottle ag Dissolv n:Dis ag e_plus ag te: ag te: ag !Numb ~u ~u vity: vity: lved: solve CTD: ~o ed: ~ed:B ~o _Nitri ~o Bottle ~o Bottle ~o !er mb en CTD: CTD: CTD: d:CTD Seapoin tt Bottle: ottle tt te: tt tt tt ! er ce 650 530 Volume :Mass t le Volume :Mass le Bottle le le le !---- -- -- ------ -------- -------- -------- ----- ----- ------ ----- ------- -------- -- ------- ----- -- ------ -- ------- -- ------ -- *END OF HEADER 734 24 24 4.7 15.2943 32.3952 23.9273 41.3 58.7 5.98 260.6 1.704 -99.0000 0 6.449 281.2 3 0.24 0 0.513 0 7.94 0 733 23 23 10.4 15.2962 32.3956 23.9272 41.3 58.7 5.97 260.2 1.959 -99.0000 0 5.975 260.6 2 0.27 0 0.469 0 7.92 0 732 22 22 25.6 15.2150 32.3940 23.9436 41.6 59.2 5.98 260.6 2.303 -99.0000 0 5.989 261.1 0 0.45 0 0.467 0 8.02 0 731 21 21 50.8 8.5093 32.5027 25.2640 51.1 77.7 6.54 284.6 1.090 -99.0000 0 6.536 284.6 0 10.57 0 1.240 0 14.96 0 730 20 20 74.6 7.5010 32.5354 25.4353 53.8 83.1 6.51 283.6 0.302 -99.0000 0 6.519 283.9 6 13.28 0 1.259 0 15.08 0 729 19 19 100.5 6.7053 32.5805 25.5779 54.1 83.6 6.53 284.0 0.210 -99.0000 0 6.498 282.9 0 14.97 0 1.348 0 17.86 0 728 18 18 125.1 5.9034 32.9348 25.9586 54.3 84.1 5.91 257.3 0.191 -99.0000 0 5.937 258.4 0 19.89 6 1.627 6 27.32 6 727 17 17 150.7 5.0197 33.4643 26.4814 54.2 83.6 4.66 202.5 0.165 -99.0000 0 4.603 200.2 0 26.98 0 2.015 0 43.32 0 726 16 16 175.4 4.8155 33.6028 26.6140 54.1 83.2 3.95 171.9 0.152 -99.0000 0 3.926 170.8 0 30.00 0 2.223 0 51.62 0 725 15 15 200.5 4.6840 33.7002 26.7058 54.3 83.6 3.34 145.3 0.145 -99.0000 0 3.374 146.7 0 32.91 0 2.365 0 58.41 0 724 14 14 250.9 4.3927 33.7916 26.8098 54.5 84.1 2.54 110.4 0.139 -99.0000 0 2.547 110.8 6 36.36 0 2.589 0 69.74 0 723 13 13 300.3 4.1814 33.8389 26.8696 54.8 84.5 1.99 86.6 0.134 -99.0000 0 2.022 87.9 0 39.19 0 2.763 0 77.73 0 722 12 12 399.3 3.9185 33.9360 26.9738 55.2 85.4 1.27 55.3 0.127 -99.0000 0 1.269 55.2 0 42.07 0 2.993 0 93.52 0 721 11 11 599.6 3.7584 34.1452 27.1564 55.4 85.8 0.72 31.3 0.123 -99.0000 0 0.726 31.6 0 43.07 0 3.077 0 114.17 0 720 10 10 801.4 3.3473 34.2751 27.2999 55.5 86.1 0.54 23.6 0.122 -99.0000 0 0.559 24.3 6 43.58 0 3.136 0 131.80 0 719 9 9 999.8 3.0468 34.3555 27.3921 55.4 86.1 0.38 16.4 0.122 34.3540 0 0.372 16.2 0 44.14 0 3.189 0 143.57 0 718 8 8 1250.6 2.6553 34.4348 27.4903 55.6 86.1 0.43 18.9 0.122 34.4353 0 0.421 18.3 0 44.69 0 3.161 0 157.02 0 717 7 7 1500.6 2.4066 34.4859 27.5524 55.5 86.2 0.52 22.7 0.121 34.4861 0 0.505 21.9 0 44.81 6 3.208 6 164.44 6 716 6 6 1999.6 1.9758 34.5758 27.6595 55.6 86.4 1.20 51.9 0.120 34.5852 3 1.185 51.5 0 43.17 0 3.034 0 174.29 0 715 5 5 2500.8 1.7443 34.6220 27.7144 55.7 86.5 1.85 80.4 0.115 34.6227 6 1.842 80.0 0 41.39 0 2.925 0 176.30 0 714 4 4 3002.7 1.5902 34.6522 27.7502 55.6 86.7 2.46 106.9 0.112 34.6529 0 2.464 107.0 0 39.19 0 2.793 0 175.01 0 713 3 3 3501.5 1.5183 34.6691 27.7690 55.7 86.7 2.88 124.9 0.111 34.6698 0 2.879 125.1 6 38.44 0 2.675 0 172.78 0 712 2 2 4000.9 1.5069 34.6779 27.7769 55.6 86.5 3.10 134.9 0.110 34.6786 0 3.113 135.2 0 37.79 0 2.619 0 172.55 0 711 1 1 4318.0 1.5222 34.6812 27.7784 54.5 84.5 3.15 136.9 0.110 -99.0000 0 3.155 137.1 0 37.69 0 2.596 0 175.88 0