*2018/10/02 09:42:23.89 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2018/06/12 13:26:28.000 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 : A5FE244D NUMBER OF CHANNELS : 22 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 519 542 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 5.4 3991.2 5 Temperature:CTD deg_C_(ITS90) 1.5374 10.0315 6 Salinity:CTD PSS-78 32.4057 34.6748 7 Sigma-t:CTD kg/m^3 24.948 27.7718 8 Transmissivity:CTD %/m 52.5 60.7 9 Oxygen:Dissolved:CTD:Volume ml/l 0.3 6.92 10 Oxygen:Dissolved:CTD:Mass µmol/kg 13 301.4 11 Fluorescence:CTD:Seapoint mg/m^3 0.71E-01 1.458 12 Salinity:Bottle PSS-78 32.4079 34.668 13 Flag:Salinity:Bottle n/a 14 Nitrate_plus_Nitrite:Bottle µmol/l 7.09 7.09 15 Flag:Nitrate_plus_Nitrite:Bottle n/a 16 Phosphate:Bottle µmol/l 0.925 0.925 17 Flag:Phosphate:Bottle n/a 18 Silicate:Bottle µmol/l 4.92 4.92 19 Flag:Silicate:Bottle n/a 20 Chlorophyll:Extracted:Bottle mg/m^3 0.48 0.48 21 Flag:Chlorophyll:Extracted:Bottle n/a 22 Phaeo-Pigment:Extracted:Bottle mg/m^3 0.8E-01 0.8E-01 $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 ' ' 7 F R4 2 15 0 ' ' 3 NQ C ' ' 16 -99 ' ' 8 F R4 3 17 0 ' ' 3 NQ C ' ' 18 -99 ' ' 7 F R4 2 19 0 ' ' 3 NQ C ' ' 20 -99 ' ' 7 F R4 2 21 0 ' ' 3 NQ C ' ' 22 -99 ' ' 7 F R4 2 $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 : P22 EVENT NUMBER : 68 LATITUDE : 49 41.99000 N ! (deg min) LONGITUDE : 140 40.00000 W ! (deg min) WATER DEPTH : 3931 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 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 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-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores Salinity Fl Nitrat Fl Phospha Fl Silica Fl Chloro Fl Phaeo- !le_ tt tt re:CTD ure:CTD :CTD CTD missi :Disso n:Dis cence: :Bottle ag e_plus ag te: ag te: ag phyll: ag Pigmen !Numb ~u ~u vity: lved: solve CTD: ~o _Nitri ~o Bottle ~o Bottle ~o Extrac ~o t:Extr !er mb en CTD CTD: d:CTD Seapoin tt te: tt tt tt ted: tt acted: ! er ce Volume :Mass t le Bottle le le le Bottle le Bottle !---- -- -- ------ -------- -------- -------- ----- ------ ----- ------- -------- -- ------ -- ------- -- ------ -- ------ -- ------ *END OF HEADER 542 24 24 5.4 10.0315 32.4062 24.9480 52.5 6.75 294.0 1.218 32.4079 0 7.09 0 0.925 0 4.92 0 0.48 6 0.08 541 23 23 10.3 10.0250 32.4061 24.9490 52.7 6.75 294.1 1.396 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 540 22 22 25.2 9.9957 32.4057 24.9535 52.7 6.74 293.4 1.458 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 539 21 21 50.6 6.7198 32.4587 25.4801 57.6 6.92 301.4 0.521 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 538 20 20 75.6 6.2358 32.5064 25.5793 58.6 6.89 300.1 0.415 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 537 19 19 101.0 6.0777 32.7305 25.7758 59.5 6.36 276.7 0.162 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 536 18 18 125.8 5.8997 33.3872 26.3165 59.6 5.13 223.3 0.116 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 535 17 17 150.2 6.4570 33.7514 26.5335 59.7 4.51 196.4 0.105 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 534 16 16 175.4 6.2824 33.8216 26.6115 59.6 4.25 185.0 0.100 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 533 15 15 200.0 5.8361 33.8043 26.6540 59.5 4.06 176.6 0.099 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 532 14 14 250.7 5.2250 33.8229 26.7420 59.7 3.31 144.1 0.098 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 531 13 13 300.8 4.9949 33.8960 26.8264 60.0 2.36 102.6 0.090 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 530 12 12 400.5 4.4805 33.9668 26.9396 60.2 1.70 73.8 0.084 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 529 11 11 600.6 3.9104 34.1478 27.1432 60.4 0.69 29.8 0.073 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 528 10 10 801.1 3.4411 34.2677 27.2850 60.5 0.45 19.6 0.073 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 527 9 9 1000.6 3.0733 34.3574 27.3912 60.5 0.31 13.4 0.073 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 526 8 8 1250.6 2.7210 34.4350 27.4848 60.5 0.30 13.0 0.073 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 525 7 7 1500.5 2.3766 34.4961 27.5631 60.7 0.48 20.9 0.073 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 524 6 6 1750.4 2.1271 34.5460 27.6235 60.7 0.86 37.1 0.073 34.5459 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 523 5 5 2000.6 1.9533 34.5802 27.6647 60.7 1.25 54.2 0.072 34.5805 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 522 4 4 2500.4 1.7244 34.6257 27.7189 60.7 1.91 83.2 0.073 34.6234 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 521 3 3 3000.3 1.5866 34.6531 27.7511 60.7 2.48 107.9 0.072 34.6535 6 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 520 2 2 3500.6 1.5374 34.6676 27.7664 60.7 2.82 122.6 0.073 34.6680 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 519 1 1 3991.2 1.5427 34.6748 27.7718 60.3 2.98 129.4 0.071 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00