*2013/10/15 10:33:06.15 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2009/02/05 07:20:58.000 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 : DE5417DC NUMBER OF CHANNELS : 12 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 450 473 2 Bottle_Number n/a 1 24 3 Pressure:CTD dbar 497.9 2018.1 4 Temperature:CTD deg_C_(ITS90) 1.9225 3.9005 5 Salinity:Practical:CTD PSS-78 34.1068 34.5857 6 Sigma-t:CTD kg/m^3 27.1116 27.6716 7 Transmissivity:CTD %/m 61.7 61.8 8 Oxygen:Dissolved:CTD:Volume ml/l 0.8 1.33 9 Oxygen:Dissolved:CTD:Mass µmol/kg 34.6 57.7 10 Fluorescence:CTD:Seapoint mg/m^3 0.5E-01 0.6E-01 11 Salinity:Bottle PSS-78 34.103 34.5863 12 Flag:Salinity: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 ' ' $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 : P26 EVENT NUMBER : 46 LATITUDE : 49 59.66000 N ! (deg min) LONGITUDE : 144 59.84000 W ! (deg min) WATER DEPTH : 4220 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0550 *COMMENTS 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 !Samp Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores Salinity Fl !le_ tt re:CTD ure:CTD : CTD missi :Disso n:Dis cence: :Bottle ag !Numb ~u Practica vity: lved: solve CTD: ~o !er mb l:CTD CTD CTD: d:CTD Seapoin tt ! er Volume :Mass t le !---- -- ------ -------- -------- -------- ----- ------ ----- ------- -------- -- *END OF HEADER 473 24 500.7 3.8999 34.1068 27.1116 61.7 0.80 34.7 0.058 34.1076 472 23 501.7 3.9001 34.1083 27.1128 61.7 0.80 34.6 0.059 34.1081 471 22 498.9 3.9004 34.1075 27.1121 61.7 0.80 34.8 0.059 34.1076 470 21 499.8 3.9001 34.1074 27.1121 61.7 0.80 34.8 0.058 34.1071 469 20 502.5 3.9005 34.1087 27.1130 61.7 0.80 34.8 0.059 34.1083 468 19 501.2 3.9004 34.1093 27.1135 61.7 0.80 34.7 0.059 34.1051 467 18 497.9 3.9005 34.1079 27.1124 61.7 0.80 34.9 0.059 34.1042 466 17 502.5 3.9004 34.1096 27.1138 61.7 0.80 34.9 0.058 34.1095 465 16 500.5 3.9001 34.1091 27.1134 61.7 0.80 34.8 0.059 34.1072 464 15 499.5 3.9001 34.1083 27.1128 61.7 0.80 34.9 0.059 34.1056 463 14 500.7 3.9002 34.1088 27.1132 61.7 0.81 35.0 0.060 34.1074 462 13 502.0 3.9001 34.1094 27.1136 61.7 0.80 34.9 0.059 34.1030 461 12 1997.8 1.9374 34.5829 27.6682 61.8 1.29 55.9 0.051 34.5847 460 11 1999.2 1.9372 34.5829 27.6682 61.8 1.28 55.8 0.051 34.5863 459 10 1997.6 1.9374 34.5829 27.6682 61.8 1.28 55.8 0.051 34.5844 458 9 1996.4 1.9379 34.5827 27.6680 61.8 1.28 55.8 0.051 34.5842 457 8 1997.9 1.9372 34.5828 27.6681 61.8 1.29 56.0 0.051 34.5830 456 7 1997.3 1.9375 34.5828 27.6681 61.8 1.28 55.8 0.050 34.5834 455 6 1996.6 1.9374 34.5828 27.6681 61.8 1.29 55.9 0.050 34.5826 454 5 1997.5 1.9375 34.5827 27.6680 61.8 1.29 55.9 0.051 34.5815 453 4 1999.2 1.9365 34.5829 27.6682 61.8 1.29 55.9 0.051 34.5838 452 3 1996.5 1.9364 34.5829 27.6682 61.8 1.29 56.0 0.052 34.5816 451 2 2017.6 1.9225 34.5857 27.6716 61.8 1.33 57.7 0.051 34.5855 450 1 2018.1 1.9226 34.5857 27.6716 61.8 1.32 57.4 0.050 -99.0000