*2021/05/31 15:27:51.78 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2019/08/21 02:54:53.000 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 : 118911C8 NUMBER OF CHANNELS : 22 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 612 630 2 Bottle_Number n/a 1 19 3 Bottle:Firing_Sequence n/a 1 19 4 Pressure:CTD dbar 5 401.4 5 Temperature:CTD deg_C_(ITS90) 4.4711 15.9723 6 Salinity:CTD PSS-78 32.2267 33.9805 7 Sigma-t:CTD kg/m^3 23.6482 26.9515 8 Transmissivity:CTD:650 %/m 45.5 57.4 9 Transmissivity:CTD:530 %/m 66.6 88.1 10 Oxygen:Dissolved:CTD:Volume ml/l 1.2 5.98 11 Oxygen:Dissolved:CTD:Mass µmol/kg 52 260.8 12 Fluorescence:CTD:Seapoint mg/m^3 0.121 1.234 13 PAR:CTD µE/m^2/sec 0 9.4 14 Nitrate_plus_Nitrite:Bottle µmol/l 0 0 15 Flag:Nitrate_plus_Nitrite:Bottle n/a 16 Phosphate:Bottle µmol/l 0.292 0.292 17 Flag:Phosphate:Bottle n/a 18 Silicate:Bottle µmol/l 0.5E-01 0.5E-01 19 Flag:Silicate:Bottle n/a 20 Chlorophyll:Extracted:Bottle mg/m^3 0.34 0.34 21 Flag:Chlorophyll:Extracted:Bottle n/a 22 Phaeo-Pigment:Extracted:Bottle mg/m^3 0.6E-01 0.6E-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 ' ' 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 ' ' 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 : 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 : P21 EVENT NUMBER : 77 LATITUDE : 49 37.99000 N ! (deg min) LONGITUDE : 139 39.93000 W ! (deg min) WATER DEPTH : 3949 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0506 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 - 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-- !Samp Bo Bo Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: Nitrat Fl Phospha Fl Silica Fl Chloro Fl Phaeo- !le_ tt tt re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: CTD 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 630 19 19 5.2 15.9713 32.2267 23.6483 45.7 66.9 5.97 260.5 1.234 7.6 0.00 0 0.292 0 0.05 0 0.34 6 0.06 629 18 18 5.0 15.9723 32.2269 23.6482 45.6 66.8 5.98 260.8 1.222 8.2 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 628 17 17 5.3 15.9717 32.2271 23.6485 45.7 66.8 5.97 260.5 1.213 7.8 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 627 16 16 5.3 15.9717 32.2271 23.6485 45.7 66.8 5.98 260.7 1.229 8.4 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 626 15 15 5.2 15.9707 32.2270 23.6486 45.7 66.9 5.97 260.6 1.226 9.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 625 14 14 5.2 15.9705 32.2271 23.6488 45.7 66.9 5.97 260.5 1.229 9.3 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 624 13 13 5.2 15.9683 32.2270 23.6492 45.5 66.6 5.97 260.4 1.228 9.4 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 623 12 12 300.4 5.1202 33.9085 26.8219 57.1 87.5 1.86 81.1 0.123 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 622 11 11 300.5 5.1202 33.9084 26.8219 57.1 87.5 1.86 81.0 0.124 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 621 10 10 300.3 5.1188 33.9086 26.8222 57.1 87.5 1.86 80.9 0.123 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 620 9 9 300.3 5.1153 33.9087 26.8227 57.1 87.7 1.86 80.9 0.124 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 619 8 8 301.0 5.1160 33.9086 26.8225 57.2 87.7 1.86 80.9 0.127 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 618 7 7 300.4 5.1070 33.9086 26.8235 57.0 87.7 1.86 80.8 0.127 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 617 6 6 400.8 4.4722 33.9802 26.9511 57.4 88.1 1.20 52.3 0.121 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 616 5 5 400.9 4.4720 33.9802 26.9511 57.4 88.1 1.20 52.3 0.122 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 615 4 4 400.9 4.4715 33.9804 26.9513 57.4 88.1 1.20 52.2 0.122 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 614 3 3 400.3 4.4714 33.9804 26.9514 57.4 88.1 1.20 52.2 0.122 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 613 2 2 400.5 4.4714 33.9804 26.9514 57.4 88.0 1.20 52.0 0.122 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00 612 1 1 401.4 4.4711 33.9805 26.9515 57.4 88.1 1.20 52.3 0.122 0.0 -99.00 0 -99.000 0 -99.00 0 -99.00 0 -99.00