*2013/10/15 10:33:05.72 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 2009/01/30 07:22:44.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 1 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Up FILE TYPE : ASCII CRC : 12A48F12 NUMBER OF CHANNELS : 20 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------------- --------------- -------------- -------------- 1 Sample_Number n/a 122 122 2 Bottle_Number n/a 1 1 3 Pressure:CTD dbar 5.1 5.1 4 Temperature:CTD deg_C_(ITS90) 7.8495 7.8495 5 Salinity:Practical:CTD PSS-78 32.2385 32.2385 6 Sigma-t:CTD kg/m^3 25.1531 25.1531 7 Transmissivity:CTD %/m 52.7 52.7 8 Oxygen:Dissolved:CTD:Volume ml/l 6.69 6.69 9 Oxygen:Dissolved:CTD:Mass µmol/kg 291.4 291.4 10 Fluorescence:CTD:Seapoint mg/m^3 0.75 0.75 11 Salinity:Bottle PSS-78 32.2431 32.2431 12 Flag:Salinity:Bottle n/a 13 Nitrate_plus_Nitrite:Bottle µmol/l 8.8 8.8 14 Flag:Nitrate_plus_Nitrite:Bottle n/a 15 Phosphate:Bottle µmol/l 1.01 1.01 16 Flag:Phosphate:Bottle n/a 17 Silicate:Bottle µmol/l 10.9 10.9 18 Flag:Silicate:Bottle n/a 19 Chlorophyll:Extracted:Bottle mg/m^3 1.18 1.18 20 Flag:Chlorophyll:Extracted: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 ' ' 6 F R4 1 14 0 ' ' 3 NQ C ' ' 15 -99 ' ' 7 F R4 2 16 0 ' ' 3 NQ C ' ' 17 -99 ' ' 6 F R4 1 18 0 ' ' 3 NQ C ' ' 19 -99 ' ' 7 F R4 2 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 : P5 EVENT NUMBER : 15 LATITUDE : 48 41.52000 N ! (deg min) LONGITUDE : 127 10.01000 W ! (deg min) WATER DEPTH : 2090 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 *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 --13- 14 --15-- 16 --17- 18 --19-- 20 !Samp Bo Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge Fluores Salinity Fl Nitra Fl Phosph Fl Silic Fl Chloro Fl !le_ tt re:CTD ure:CTD : CTD missi :Disso n:Dis cence: :Bottle ag te_pl ag ate: ag ate: ag phyll: ag !Numb ~u Practica vity: lved: solve CTD: ~o ~Nitr ~o Bottle ~o Bottl ~o Extrac ~o !er mb l:CTD CTD CTD: d:CTD Seapoin tt ite:B tt tt e tt ted: tt ! er Volume :Mass t le ottle le le le Bottle le !---- -- ------ -------- -------- -------- ----- ------ ----- ------- -------- -- ----- -- ------ -- ----- -- ------ -- *END OF HEADER 122 1 5.1 7.8495 32.2385 25.1531 52.7 6.69 291.4 0.750 32.2431 8.8 1.01 10.9 1.18