*2013/10/15 10:33:06.07 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2009/02/03 01:00:50.000 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 : 2A941ECF NUMBER OF CHANNELS : 20 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 347 370 2 Bottle_Number n/a 1 24 3 Pressure:CTD dbar 5.2 4019.7 4 Temperature:CTD deg_C_(ITS90) 1.523 6.3956 5 Salinity:Practical:CTD PSS-78 32.468 34.6774 6 Sigma-t:CTD kg/m^3 25.529 27.7744 7 Transmissivity:CTD %/m 56.1 61.9 8 Oxygen:Dissolved:CTD:Volume ml/l 0.25 6.95 9 Oxygen:Dissolved:CTD:Mass µmol/kg 11 302.7 10 Fluorescence:CTD:Seapoint mg/m^3 0.142 0.779 11 Salinity:Bottle PSS-78 32.4706 34.6776 12 Flag:Salinity:Bottle n/a 13 Oxygen:Dissolved:Bottle:Volume ml/l 0.273 7.034 14 Flag:Oxygen:Dissolved:Bottle n/a 15 Nitrate_plus_Nitrite:Bottle µmol/l 12.5 46.1 16 Flag:Nitrate_plus_Nitrite:Bottle n/a 17 Phosphate:Bottle µmol/l 1.23 3.36 18 Flag:Phosphate:Bottle n/a 19 Silicate:Bottle µmol/l 14.6 180.3 20 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 ' ' 7 F ' ' 1 4 -99 ' ' 9 F ' ' 4 5 -99 ' ' 9 F ' ' 4 6 -99 ' ' 9 F R4 4 7 -99 ' ' 6 F ' ' 1 8 -99 ' ' 7 F ' ' 2 9 -99 ' ' 6 F ' ' 1 10 -99 ' ' 8 F ' ' 3 11 -99 ' ' 9 F R4 4 12 0 ' ' 3 NQ C ' ' 13 -99 ' ' 8 F ' ' 3 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 6 F R4 1 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 7 F R4 2 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 6 F R4 1 20 0 ' ' 3 NQ C ' ' $END *ADMINISTRATION MISSION : 2009-03 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 : P20 EVENT NUMBER : 38 LATITUDE : 49 34.00000 N ! (deg min) LONGITUDE : 138 40.07000 W ! (deg min) WATER DEPTH : 3946 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 *COMMENTS Sample Number 349: Oxygen:Dissolved:Bottle - bad curve. Sample Number 351: Salinity:Bottle - duplicates somewhat different: 34.6333 & 34.6297. Sample Number 363: Bottle Number 17 - mis-trip. Niskin closed at 125 dbar. Analysis methods: ----------------- Chlorophyll samples were analyzed at sea using a Chemistry Turner Designs 10AU fluorometer which was calibrated in April 2008 using pure chlorophyll a. Chlorophyll precision was determined by analyzing replicate samples drawn from one Niskin. For details see file 2009-03_CHL.pdf. Oxygen samples were analyzed at sea using an automated titration system consisting of a Brinkman Dosimat (model 665) and a PC 950 Colorimeter. For details on precision see file 2009-03_OXY.pdf. ****************************************************************** Final Dissolved Oxygen data may not match those on rosette logs. Errors in endpoints were corrected based on manual inspection of titration curve data and DO values were then re-calculated. ****************************************************************** Salinity samples were collected in glass bottles and analyzed at IOS on a Guildline model 8400B Autosal standardized with IAPSO standard seawater. See file 2009-03_SAL.pdf for information on precision. Nutrient samples were collected in plastic tubes and analyzed fresh at sea using an Astoria-Pacific autoanalyzer following methods described in Barwell-Clarke and Whitney (1996). For details on nutrient duplicates and precision see file 2009-03_NUT.pdf. NOTE: July 2013: A correction has been applied to Nitrate_plus_Nitrite:Bottle and Phosphate:Bottle data from deep-water cruises analyzed at IOS between 2009 and 2012. For details see the report: Corrections_to_Nitrate_and_Phosphate_Data_2009-2012.pdf. The minimum detectable level for DMS is 0.10 nM, so “0” values should be interpreted as <0.10. For details on the collection and analysis of the DMS data see file 2009-03_DMS_report.pdf. For duplicates see 2009-03_DMS.pdf. References: 1. Carpenter, J.H. 1965. The Chesapeake Bay Institute Technique for the Winkler Dissolved Oxygen Method. Limmnol. & Oceanogr., 10: 141-143. 2. J. Barwell-Clarke and F. Whitney. 1996. Institute of Ocean Sciences Nutrient Methods and Analysis. Canadian Technical Report of Hydrography and Ocean Sciences, No. 182, 43 pp. ********************************************************************************** NOTE: There were a number of problems with the Oxygen:Dissolved:CTD sensors that limit the reliability of the data: For casts 0001 to 0040, the data below 1400 dbar are considered less reliable than usual. For casts 0042 and 0044 the Oxygen:Dissolved:CTD channel was removed. For casts 0046 to 0060 there was no bottle sampling so the Oxygen:Dissolved:CTD data were recalibrated based on an intercomparison with casts using a different sensor. ********************************************************************************** Transmissometer #1005DR was calibrated in March 2008, and drifted significantly but steadily until July 2009; then a sudden shift occurred, so that maximum values between September 2009 and July 2010 were very low, ~25%/m. In August 2010 a study was made of transmissivity that led to a decision to apply post-processing corrections to all cruises between March 2008 and June 2010. Transmissivity data from this cruise were corrected by multiplying the original values by a correction factor, which was based on assumptions that deep offshore transmissivity from a June 2009 cruise should be about 62%/m and that drift was linear with time between March 2008 and July 2009. The corrections produced reasonable results for all cruises in that time period. For details on how the correction factor was derived see: Transmissometer_1005DR_Corrections.pdf These data should be considered estimates. ****************************************************************************** For details on the processing see processing report: 2009-03-proc.pdf NOTE: July 2013: A correction has been applied to Nitrate_plus_Nitrite:Bottle and Phosphate:Bottle data from deep-water cruises analyzed at IOS between 2009 and 2012. For details see the report: Corrections_to_Nitrate_and_Phosphate_Data_2009-2012.pdf $REMARKS Data quality is expressed with the following flags ------------------------------------------------------------------------------ 1 = Sample for this measurement was drawn from water bottle but not analyzed (not normally used). 2 = Acceptable measurement (not normally used). 3 = Questionable measurement (no problem observed in sampling or analysis, but value is not trusted, nonetheless; includes outlyers). 4 = Bad measurement (known problem with sampling or analysis, but not serious enough to completely discard the value). 5 = Not reported (lost sample; unredeemably bad measurement). 6 = Mean of replicate measurements. 7 = Manual chromatographic peak measurement. 8 = Irregular digital chromatographic peak integration. 9 = Sample not drawn for this measurement from this bottle (not normally used). ------------------------------------------------------------------------------ $END !-1-- 2- --3--- ---4---- ---5---- ---6---- --7-- --8--- --9-- ---10-- ---11--- 12 ---13-- 14 --15- 16 --17-- 18 --19- 20 !Samp Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores Salinity Fl Oxygen: Fl Nitra Fl Phosph Fl Silic Fl !le_ tt re:CTD ure:CTD : CTD missi :Disso n:Dis cence: :Bottle ag Dissolv ag te_pl ag ate: ag ate: ag !Numb ~u Practica vity: lved: solve CTD: ~o ed: ~o ~Nitr ~o Bottle ~o Bottl ~o !er mb l:CTD CTD CTD: d:CTD Seapoin tt Bottle: tt ite:B tt tt e tt ! er Volume :Mass t le Volume le ottle le le le !---- -- ------ -------- -------- -------- ----- ------ ----- ------- -------- -- ------- -- ----- -- ------ -- ----- -- *END OF HEADER 370 24 5.2 6.3956 32.4680 25.5290 56.1 6.95 302.7 0.779 32.4706 6 6.947 12.6 1.23 14.7 369 23 9.3 6.3861 32.4727 25.5339 58.0 6.95 302.6 0.767 32.4724 6.932 12.5 1.24 14.6 368 22 24.1 6.3625 32.4764 25.5398 58.3 6.95 302.5 0.754 32.4790 6.950 6 12.8 1.24 14.6 367 21 51.4 6.3563 32.4817 25.5448 58.6 6.92 301.4 0.689 32.4842 6.938 12.8 1.24 14.7 366 20 74.0 6.3491 32.4860 25.5491 59.0 6.93 301.7 0.617 32.4883 7.034 12.8 1.25 14.7 365 19 98.6 6.2817 32.5015 25.5697 59.8 6.88 299.5 0.473 32.5017 6.914 13.0 1.28 15.2 364 18 126.4 4.9575 32.9694 26.0961 61.1 6.14 267.4 0.172 32.9436 6.221 20.5 1.70 29.3 363 17 150.6 5.1851 33.4420 26.4449 61.0 5.09 221.4 0.167 -99.0000 5 -99.000 5 -99.0 5 -99.00 5 -99.0 5 362 16 174.6 5.1050 33.6987 26.6574 60.7 4.16 181.1 0.167 33.6959 4.212 28.6 2.16 48.8 361 15 200.2 4.8163 33.7667 26.7439 61.0 3.39 147.6 0.171 33.7655 3.406 32.5 2.40 58.8 360 14 249.3 4.5311 33.8316 26.8267 61.1 2.43 105.6 0.170 33.8331 2.457 36.4 2.69 70.7 359 13 299.0 4.3808 33.9043 26.9006 61.4 1.63 71.1 0.169 33.9034 1.641 39.8 2.91 81.4 358 12 402.3 4.1867 34.0070 27.0027 61.7 1.03 44.6 0.169 34.0071 1.004 42.7 3.12 95.6 357 11 597.7 3.7642 34.1598 27.1674 61.7 0.50 21.8 0.170 34.1601 0.475 44.7 3.27 116.7 356 10 800.3 3.3987 34.2875 27.3049 61.7 0.31 13.4 0.168 34.2878 0.298 45.4 3.33 133.4 355 9 1002.9 3.0129 34.3694 27.4063 61.7 0.25 11.0 0.168 34.3696 0.273 45.8 3.36 147.5 354 8 1248.5 2.6363 34.4415 27.4973 61.8 0.33 14.3 0.165 34.4429 0.322 46.1 3.32 160.0 353 7 1503.1 2.3296 34.5021 27.5718 61.8 0.60 25.9 0.160 34.5031 0.557 45.1 3.28 170.0 352 6 2000.7 1.9099 34.5878 27.6742 61.8 1.30 56.6 0.153 34.5886 1.311 43.3 3.13 177.3 351 5 2499.0 1.6998 34.6299 27.7241 61.9 1.89 82.1 0.152 34.6315 63 1.929 41.8 6 2.99 6 177.7 6 350 4 2497.6 1.7005 34.6297 27.7239 61.8 1.91 83.1 0.153 34.6279 1.958 42.0 3.00 177.7 349 3 3000.6 1.5682 34.6564 27.7551 61.9 2.48 107.7 0.147 34.6570 2.505 3 40.1 2.87 176.3 348 2 3498.4 1.5230 34.6702 27.7695 61.9 2.88 125.2 0.145 34.6710 2.835 39.2 2.80 176.4 347 1 4019.7 1.5352 34.6774 27.7744 61.4 3.08 133.9 0.142 34.6776 3 3.049 38.5 2.77 180.3