*2021/06/10 08:46:53.28 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2021/02/05 20:09:07.000 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 : 2856C9E6 NUMBER OF CHANNELS : 23 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 198 221 2 Bottle_Number n/a 1 24 3 Bottle:Firing_Sequence n/a 1 24 4 Pressure:CTD dbar 5 3359.1 5 Temperature:CTD deg_C_(ITS90) 1.6199 8.2734 6 Salinity:CTD PSS-78 32.2885 34.6573 7 Sigma-t:CTD kg/m^3 25.1366 27.752 8 Transmissivity:CTD:650 %/m 55.9 60.8 9 Transmissivity:CTD:530 %/m 85.2 94.5 10 Oxygen:Dissolved:CTD:Volume ml/l 0.3 6.66 11 Oxygen:Dissolved:CTD:Mass µmol/kg 13.2 290.2 12 Fluorescence:CTD:Seapoint mg/m^3 0.38E-01 0.853 13 Salinity:Bottle PSS-78 34.5535 34.6499 14 Flag:Salinity:Bottle n/a 15 Nitrate_plus_Nitrite:Bottle µmol/l 8.92 8.92 16 Flag:Nitrate_plus_Nitrite:Bottle n/a 17 Phosphate:Bottle µmol/l 0.988 0.988 18 Flag:Phosphate:Bottle n/a 19 Silicate:Bottle µmol/l 7.02 7.02 20 Flag:Silicate:Bottle n/a 21 Chlorophyll:Extracted:Bottle mg/m^3 0.32 0.32 22 Flag:Chlorophyll:Extracted:Bottle n/a 23 Phaeo-Pigment:Extracted:Bottle mg/m^3 0.17 0.17 $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 ' ' ' ' F9.4 R4 ' ' 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 7 F R4 2 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 8 F R4 3 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 7 F R4 2 22 0 ' ' 3 NQ C ' ' 23 -99 ' ' 7 F R4 2 $END *ADMINISTRATION MISSION : 2021-001 AGENCY : IOS, Ocean Science Division, Sidney, B.C. COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : P14 EVENT NUMBER : 57 LATITUDE : 49 7.43000 N ! (deg min) LONGITUDE : 132 39.99000 W ! (deg min) WATER DEPTH : 3314 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0550 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 13 - 29 days after collection. For details on duplicate analysis see file 2021-001_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 2021-001_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 2021-001_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 3 to 6 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. Chlorophyll values ranged from 0.01-0.82 ug/l in 135 samples. Average %CV for this cruise was 2.48% with 2 out of 29 duplicate pairs having a CV > 10% and 0 duplicate pairs having a CV > 30% . Our average dataset %CV is 3.83% for 2013 - 2020 so the overall quality of this dataset is good. For details on duplicates see file 2021-001_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 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 2021-001_DMS_report.pdf and for duplicate analysis see 2021-001_DMS.pdf. DMSP-D: Approximately 50-100 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 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. DMSP-T: 3.5 ml of seawater were collected directly from the Niskin into a polypropylene tube (15ml) 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 at the Institute of Ocean Sciences when time permitted. 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%. The workstation for the DMS instrument suffered a hard drive failure after P12. No subsequent samples were collected for DMS or DMSP. For more details see file 2021-001_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. 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: 2021-001-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 --23-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans 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 missi :Disso n:Dis cence: :Bottle ag e_plus ag te: ag te: ag phyll: ag Pigmen !Numb ~u ~u vity: vity: lved: solve CTD: ~o _Nitri ~o Bottle ~o Bottle ~o Extrac ~o t:Extr !er mb en CTD: CTD: CTD: d:CTD Seapoin tt te: tt tt tt ted: tt acted: ! er ce 650 530 Volume :Mass t le Bottle le le le Bottle le Bottle !---- -- -- ------ -------- -------- -------- ----- ----- ------ ----- ------- -------- -- ------ -- ------- -- ------ -- ------ -- ------ *END OF HEADER 221 24 24 5.0 8.2734 32.2956 25.1366 55.9 85.2 6.66 290.2 0.561 -99.0000 0 8.92 0 0.988 0 7.02 0 0.32 0 0.17 220 23 23 9.4 8.2696 32.2959 25.1374 55.9 85.3 6.66 290.2 0.656 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 219 22 22 24.9 8.2513 32.2962 25.1404 56.3 85.8 6.64 289.5 0.853 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 218 21 21 49.8 8.2362 32.2953 25.1419 56.6 86.3 6.64 289.1 0.817 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 217 20 20 74.7 8.1432 32.2885 25.1501 56.8 86.7 6.65 289.6 0.791 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 216 19 19 100.0 7.6851 32.6188 25.4751 59.2 91.2 5.94 258.6 0.223 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 215 18 18 125.5 6.8396 33.1846 26.0362 60.0 92.8 5.06 220.2 0.069 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 214 17 17 150.2 6.5242 33.4798 26.3105 60.0 92.9 4.64 202.1 0.055 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 213 16 16 175.2 6.0164 33.6838 26.5364 60.0 92.8 3.96 172.3 0.049 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 212 15 15 199.9 5.7382 33.7425 26.6172 60.1 92.9 3.51 152.8 0.047 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 211 14 14 249.9 5.2809 33.8325 26.7431 60.3 93.2 2.75 119.8 0.047 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 210 13 13 301.1 5.0119 33.8725 26.8058 60.4 93.4 2.27 98.6 0.046 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 209 12 12 400.3 4.5354 33.9843 26.9475 60.5 93.6 1.36 59.2 0.044 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 208 11 11 600.6 3.9759 34.1606 27.1467 60.8 94.0 0.51 22.2 0.044 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 207 10 10 800.6 3.4931 34.2801 27.2899 60.8 93.9 0.33 14.3 0.044 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 206 9 9 999.8 3.1424 34.3494 27.3784 60.8 93.9 0.30 13.2 0.044 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 205 8 8 1251.2 2.7020 34.4355 27.4868 60.8 94.0 0.34 14.6 0.044 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 204 7 7 1500.2 2.3878 34.4986 27.5642 60.8 94.1 0.54 23.3 0.043 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 203 6 6 1749.7 2.1085 34.5525 27.6302 60.8 94.2 0.95 41.2 0.041 34.5535 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 202 5 5 2000.0 1.9357 34.5871 27.6717 60.8 94.4 1.32 57.3 0.040 34.5858 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 201 4 4 2249.6 1.8216 34.6106 27.6993 60.8 94.5 1.63 70.7 0.040 34.6086 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 200 3 3 2499.2 1.7276 34.6291 27.7213 60.8 94.5 1.93 83.8 0.039 34.6285 6 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 199 2 2 2999.7 1.6301 34.6503 27.7457 60.8 94.4 2.33 101.4 0.038 34.6499 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 198 1 1 3359.1 1.6199 34.6573 27.7520 60.3 93.5 2.46 106.8 0.038 -99.0000 0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00