*2022/07/12 14:22:22.13 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2022/03/04 20:02:59.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 12 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 3783900 NUMBER OF CHANNELS : 21 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 50 61 2 Bottle_Number n/a 1 12 3 Bottle:Firing_Sequence n/a 1 12 4 Pressure:CTD dbar 5.8 1000.5 5 Temperature:CTD deg_C_(ITS90) 3.5445 8.1695 6 Salinity:CTD PSS-78 31.7464 34.386 7 Sigma-t:CTD kg/m^3 24.728 27.3693 8 Transmissivity:CTD:650 %/m 47.5 56.4 9 Transmissivity:CTD:530 %/m 75.4 94.4 10 Oxygen:Dissolved:CTD:Volume ml/l 0.27 6.89 11 Oxygen:Dissolved:CTD:Mass µmol/kg 11.7 300.2 12 Fluorescence:CTD:Seapoint mg/m^3 0.51E-01 1.206 13 Nitrate_plus_Nitrite:Bottle µmol/l 7.06 18.11 14 Flag:Nitrate_plus_Nitrite:Bottle n/a 15 Phosphate:Bottle µmol/l 0.865 1.54 16 Flag:Phosphate:Bottle n/a 17 Silicate:Bottle µmol/l 7.93 19.79 18 Flag:Silicate:Bottle n/a 19 Chlorophyll:Extracted:Bottle mg/m^3 0.11 1.06 20 Flag:Chlorophyll:Extracted:Bottle n/a 21 Phaeo-Pigment:Extracted:Bottle mg/m^3 0.12 0.34 $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 ' ' 7 F R4 2 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 8 F R4 3 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 7 F R4 2 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 7 F R4 2 $END *ADMINISTRATION MISSION : 2022-001 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 : 19 LATITUDE : 48 39.13000 N ! (deg min) LONGITUDE : 126 39.95000 W ! (deg min) WATER DEPTH : 1320 *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 21 - 49 days after collection. For details on duplicate analysis see document 2022-001_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 document 2022-001_OXY.pdf. Nutrient samples were collected in plastic tubes and quick frozen in aluminum blocks stored in a -20C freezer. For samples 400 dbar and deeper a second set of samples were collected and stored cool for silicate analysis. All samples were returned to the Institute of Ocean Sciences and they were analyzed using an Astoria-Pacific Analyzer following methods described in IOS Nutrient Methods (1996) Barwell-Clarke and Whitney. Salinity corrections were applied to Silicate data where Salinity:CTD values < 25 psu. SILcorrected = SILuncorrected [1+((-0.003)*(32-Sal:CTD))] For precision and duplicate analysis see document 2022-001_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 Trilogy 7200-000 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 12 weeks after the cruise. Variability is assessed as the CV (std dev / mean*100). Flags and comments apply to chlorophyll values only. Chlorophyll values ranged from 0.03-8.21 µg/l in 82 samples. Average CV for this cruise was 2.49% from 23 duplicates, with 1 duplicate pair having a CV > 10% and 0 duplicate pairs having a CV > 30%. Our average dataset CV is 3.89% for 2013 - 2021 so the overall quality of this dataset is good. For details on duplicates see file 2022-001_CHL.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. There were problems with spiking in the Fluorescence:CTD and Oxygen:Dissolved:CTD data during downcasts, but not during the window around bottle firing. For details on the processing see the report: 2022-001-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-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores Nitrat Fl Phospha Fl Silica Fl Chloro Fl Phaeo- !le_ tt tt re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: e_plus ag te: ag te: ag phyll: ag Pigmen !Numb ~u ~u vity: vity: lved: solve CTD: _Nitri ~o Bottle ~o Bottle ~o Extrac ~o t:Extr !er mb en CTD: CTD: CTD: d:CTD Seapoin te: tt tt tt ted: tt acted: ! er ce 650 530 Volume :Mass t Bottle le le le Bottle le Bottle !---- -- -- ------ -------- -------- -------- ----- ----- ------ ----- ------- ------ -- ------- -- ------ -- ------ -- ------ *END OF HEADER 61 12 9 21.0 8.0122 32.1005 25.0216 48.8 77.8 6.84 297.9 1.206 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 60 11 12 5.8 8.1235 31.7471 24.7283 48.8 76.9 6.89 300.2 0.516 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 59 10 11 5.8 8.1219 31.7464 24.7280 48.9 76.9 6.89 300.2 0.527 7.89 0 0.883 0 11.63 0 0.91 6 0.33 58 9 10 15.0 8.0602 32.0288 24.9584 47.5 75.4 6.87 299.4 1.019 7.35 0 0.871 0 9.11 0 1.06 0 0.34 57 8 8 29.5 8.0096 32.1038 25.0245 50.3 80.2 6.81 296.6 1.128 7.06 0 0.865 0 7.93 0 0.90 0 0.32 56 7 7 40.6 8.0038 32.1538 25.0646 54.6 88.2 6.63 288.7 0.576 8.34 6 0.952 6 8.90 6 0.35 0 0.24 55 6 6 50.8 8.1695 32.4015 25.2349 55.7 90.7 5.87 255.5 0.384 12.70 0 1.195 0 13.40 0 0.23 6 0.19 54 5 5 50.8 8.1676 32.4180 25.2481 55.7 90.7 5.84 254.3 0.376 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 53 4 4 61.4 8.0872 32.8208 25.5759 56.4 92.5 4.90 213.3 0.178 18.11 0 1.540 0 19.79 0 0.11 0 0.12 52 3 3 200.4 7.0381 33.9311 26.5974 56.2 92.6 2.11 91.7 0.054 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 51 2 2 500.9 5.0802 34.1004 26.9786 56.2 94.0 0.72 31.1 0.051 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 50 1 1 1000.5 3.5445 34.3860 27.3693 55.2 94.4 0.27 11.7 0.051 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00