*2022/07/12 14:22:22.23 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2022/03/04 22:15:22.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 19 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : F9F66D64 NUMBER OF CHANNELS : 24 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 68 86 2 Bottle_Number n/a 1 19 3 Bottle:Firing_Sequence n/a 1 19 4 Pressure:CTD dbar 6.3 1322.9 5 Temperature:CTD deg_C_(ITS90) 2.8645 8.1706 6 Salinity:CTD PSS-78 31.7451 34.482 7 Sigma-t:CTD kg/m^3 24.7202 27.5096 8 Transmissivity:CTD:650 %/m 49.3 60.1 9 Transmissivity:CTD:530 %/m 75.2 95.2 10 Oxygen:Dissolved:CTD:Volume ml/l 0.25 6.89 11 Oxygen:Dissolved:CTD:Mass µmol/kg 10.7 300.4 12 Fluorescence:CTD:Seapoint mg/m^3 0.51E-01 1.266 13 PAR:CTD µE/m^2/sec 0 41.1 14 Salinity:Bottle PSS-78 34.2913 34.469 15 Flag:Salinity:Bottle n/a 16 Oxygen:Dissolved:Bottle:Volume ml/l 0.239 6.875 17 Oxygen:Dissolved:Bottle:Mass µmol/kg 10.4 299.6 18 Flag:Oxygen:Dissolved:Bottle n/a 19 Nitrate_plus_Nitrite:Bottle µmol/l 6.88 46.08 20 Flag:Nitrate_plus_Nitrite:Bottle n/a 21 Phosphate:Bottle µmol/l 0.858 3.38 22 Flag:Phosphate:Bottle n/a 23 Silicate:Bottle µmol/l 7.76 152.14 24 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 ' ' 7 F ' ' 1 14 -99 ' ' 9 F R4 4 15 0 ' ' 3 NQ C ' ' 16 -99 ' ' 8 F R4 3 17 -99 ' ' 6 F ' ' 1 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 20 0 ' ' 3 NQ C ' ' 21 -99 ' ' 8 F R4 3 22 0 ' ' 3 NQ C ' ' 23 -99 ' ' 7 F R4 2 24 0 ' ' 3 NQ C ' ' $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 : 21 LATITUDE : 48 38.98000 N ! (deg min) LONGITUDE : 126 40.07000 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-- 22 --23-- 24 !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: 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: CTD :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 86 19 19 6.3 8.1690 31.7451 24.7202 49.3 75.2 6.89 300.4 0.716 41.1 -99.0000 0 6.875 299.6 0 7.72 0 0.880 0 11.54 0 85 18 18 10.7 8.1644 31.7537 24.7276 49.3 75.2 6.89 300.2 0.832 26.6 -99.0000 0 6.875 299.6 0 7.78 0 0.887 0 11.52 0 84 17 17 25.5 8.0350 32.1117 25.0271 50.7 78.2 6.83 297.5 1.266 19.5 -99.0000 0 6.823 297.3 6 6.88 0 0.858 0 7.76 0 83 16 16 50.5 8.1706 32.3800 25.2179 57.6 90.3 5.93 258.3 0.419 3.3 -99.0000 0 5.919 257.8 0 11.86 0 1.157 0 12.85 0 82 15 15 75.4 8.1125 33.0470 25.7497 58.6 92.4 4.34 188.9 0.128 0.7 -99.0000 0 4.374 190.4 0 21.14 6 1.696 6 23.72 6 81 14 14 100.4 7.7650 33.4953 26.1523 59.5 94.3 3.54 153.9 0.065 0.1 -99.0000 0 3.544 154.3 0 26.58 0 2.002 0 31.63 0 80 13 13 125.1 7.6852 33.7917 26.3967 59.3 93.9 2.63 114.3 0.054 0.0 -99.0000 0 2.620 114.0 0 30.87 0 2.272 0 40.30 0 79 12 12 150.1 7.6149 33.8527 26.4548 59.3 94.1 2.43 105.6 0.053 0.0 -99.0000 0 2.421 105.3 0 31.89 0 2.333 0 42.43 0 78 11 11 175.7 7.3796 33.9077 26.5315 59.4 94.1 2.25 98.1 0.054 0.0 -99.0000 0 2.254 98.1 0 32.98 0 2.381 0 45.39 0 77 10 10 200.7 7.0481 33.9323 26.5970 59.0 93.2 2.12 92.1 0.054 0.0 -99.0000 0 2.127 92.5 0 34.30 0 2.452 0 49.19 0 76 9 9 251.4 6.6417 33.9696 26.6813 59.6 94.5 1.83 79.4 0.052 0.0 -99.0000 0 1.823 79.3 6 36.29 0 2.589 0 55.12 0 75 8 8 300.5 6.3447 33.9927 26.7385 59.6 94.4 1.59 69.0 0.051 0.0 -99.0000 0 1.589 69.1 0 38.79 0 2.767 0 61.69 0 74 7 7 400.8 5.6367 34.0276 26.8550 59.8 94.7 1.16 50.3 0.051 0.0 -99.0000 0 1.161 50.5 0 40.71 0 2.924 0 73.16 0 73 6 6 601.0 4.6526 34.1555 27.0706 60.1 95.2 0.46 19.9 0.051 0.0 -99.0000 0 0.456 19.8 0 43.42 6 3.206 6 98.47 6 72 5 5 800.5 4.0231 34.2901 27.2448 59.9 94.7 0.25 10.7 0.051 0.0 34.2913 0 0.239 10.4 0 45.50 0 3.351 0 117.87 0 71 4 4 1000.5 3.5534 34.3841 27.3669 59.9 94.7 0.26 11.4 0.051 0.0 34.3853 6 0.256 11.1 6 46.02 0 3.380 0 132.48 0 70 3 3 1250.4 2.9721 34.4679 27.4886 59.9 95.0 0.46 19.8 0.051 0.0 34.4690 0 0.450 19.6 0 46.08 0 3.348 0 149.23 0 69 2 2 1251.7 2.9696 34.4682 27.4891 60.0 95.2 0.46 20.0 0.051 0.0 34.4690 0 0.452 19.6 0 45.76 0 3.343 0 149.09 0 68 1 1 1322.9 2.8645 34.4820 27.5096 59.7 94.6 0.51 22.3 0.051 0.0 -99.0000 0 0.523 22.7 0 35.74 0 2.759 0 152.14 0