*2013/12/16 15:11:46.30 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 1997/02/20 05:10:00.000 NUMBER OF RECORDS : 10 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Down FILE TYPE : ASCII DATA TYPE : REAL*4 NUMBER OF CHANNELS : 11 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- ---------------- -------------- -------------- 1 Pressure decibar 0 181 2 Sample_Number n/a 155 164 3 Salinity:Bottle PSS-78 26.6804 30.6502 4 Oxygen:Dissolved umol/kg 155.3 241.5 5 Oxygen:Dissolved mL/L 3.56 5.533 6 Nitrate_plus_Nitrite umol/L 26.4 29.3 7 Silicate umol/L 54.8 60.5 8 Phosphate umol/L 2.15 2.66 9 Temperature 'deg C (IPTS68)' 7.026 8.6838 10 Salinity PSS-78 26.7293 30.6482 11 Transmissivity %/metre 36.3 55 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ---- ----- ----- ------ ------ -------------- 1 -99 ' ' 7 F ' ' 1 2 -99 ' ' 5 I I 0 3 -99 ' ' 9 F ' ' 4 4 -99 ' ' 6 F ' ' 1 5 -99 ' ' 8 F ' ' 3 6 -99 ' ' 6 F ' ' 1 7 -99 ' ' 6 F ' ' 1 8 -99 ' ' 7 F ' ' 2 9 -99 ' ' 9 F ' ' 4 10 -99 ' ' 9 F REAL*4 4 11 -99 ' ' 6 F ' ' 1 $END $REMARKS Comments from secondary file: d:\geostr\9703\iosshell\97030043.dwn ------------------------------------------------------------------ File name : 97030042.ACQ $END *ADMINISTRATION MISSION : 1997-03 AGENCY : IOS, Ocean Science and Productivity, Sidney, B.C. COUNTRY : Canada PROJECT : Strait of Georgia SCIENTIST : Juhasz T. PLATFORM : Vector *LOCATION STATION : VI04 EVENT NUMBER : 43 LATITUDE : 49 8.75999 N ! (deg min) LONGITUDE : 123 23.39996 W ! (deg min) WATER DEPTH : 190 $REMARKS Comments from secondary file: d:\geostr\9703\iosshell\97030043.dwn ------------------------------------------------------------------ Station Latitude : 49 8.75 N Longitude : 123 23.39 W Depth : 185 $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------------------ ------ ---------- -------- --------- --------- SPRD2IS 2.1 1998/08/31 12:31:06 0 10 MERGE 2.2 1998/08/31 13:43:23 10 10 HDREDIT2 1.0 1998/08/31 13:50:00 ? ? CLEAN 2.6 1998/08/31 14:47:59 10 10 HDREDIT2 1.0 1998/09/01 13:24:13 ? ? HDREDIT2 1.8 2003/10/16 16:31:34 ? ? CLEAN 4.5 2003/10/16 16:32:56 10 10 CHANGE_CTD_CHANNEL_NAMES 1.0 2013/12/16 15:11:46 10 10 $END $REMARKS -The following MERGE parameters were used: Merge Channel: Pressure Merge Scheme Used: Interpolate Secondary onto Primary Overlap Scheme Used: Keep Primary Primary Channels to Include: Consecutive_no,Salinity:bottle,Dissolved_Oxygen:mas,Dissolved_Oxygen:vol,nitrat Secondary Channels to Include: Temperature,Salinity,Transmissivity Primary file : d:\geostr\9703\iosshell\97030043.ios Secondary file: d:\geostr\9703\iosshell\97030043.dwn Comments from secondary file: d:\geostr\9703\iosshell\97030043.dwn ------------------------------------------------------------------ -The following CALIB parameters were used: Calibration type = R Salinity is computed Transmissivity converted to %/metre Pressure offset = .0 Calibration file = w:\ctd\9703\process\9703raw.ccf -The following DESPIKE parameters were used: DESPIKE TABLE CHANNEL FIT OVER- MIN MAX MIN MAX SPIKE WIDTH LAP VALUE VALUE STDDEV STDDEV TOL. -------------------- ----- ----- ------- ------- ------- ------- ----- Pres 55 5 .00 600.00 .10000 999.000 3.00 Temp 55 5 .00 30.00 .00500 999.000 3.00 Cond 55 5 .00 1.00 .00010 999.000 3.00 Tran 55 5 .00 100.00 .10000 999.000 3.00 -The following TIMECOMP parameters were used: Temp. probe Dist (m): .0700 Sample period (sec): .0400 -The following DELETE parameters were used: Surface Record Removal: Low Sal & Last Press Min Maximum Surface Pressure (relative): 20.00 Minimum Surface Salinity: 10.000 Surface Swell Pressure Tolerance: .50 Pressure filtered over width: 11 Swells deleted. Warning message if pressure difference of 2.00 Drop rates< .30m/s (calculated over 11 points) will be deleted Sample interval = .04 seconds. -The following BINAVE2 parameters were used: Bin channel = Pressure Averaging interval = 1.0 Minimum bin value = .000 Average value was used Interpolated values were NOT used for empty bins Channel 'NUMBER_OF_BIN_RECORDS' was added to file. -The following CALIB parameters were used: Calibration type = C Pressure offset = .0 Calibration file = W:\CTD\9703\PROCESS\9703corr.ccf -The following CHANNEL(S) were removed from file. conductivity_ratio CLEAN functions: - Reset #RECS, MIN & MAX values in header. - Change Pad Value to -99 in All Channels. CLEAN functions: - Reset #RECS, MIN & MAX values in header. - Change Pad Value to -99 in All Channels. - Delete Empty Channels: 0 deleted. - Set channel name post-colon letters to upper case. $END *CALIBRATION *INSTRUMENT $REMARKS Comments from secondary file: d:\geostr\9703\iosshell\97030043.dwn ------------------------------------------------------------------ Acquisition program : CTD.EXE version 1.46 CTD data type : 2 ! 8755 system binary frame Control String : KP3000TC4 $END *COMMENTS Comments from secondary file: d:\geostr\9703\iosshell\97030043.dwn ------------------------------------------------------------------ Downcast Alt S start position 49 8.74 N 123 23.46 W 05:04:45 02-20-1997 Alt S stop position 49 8.76 N 123 23.38 W 05:09:52 02-20-1997 Comments added using HEADER EDIT program : ------------------------------------------- CTD salinities were compared with the bottle data and for the first half of the cruise the differences were very inconsistent and widely scattered. The second half comparisons showed little difference between the ctd and bottle salinities. It was found that the rosette was mistripping or double tripping. Corrections were applied based on the results from the compare program. . Chemistry data for cruise 9703 : The bottle salinity data and the dissolved oxygen data is from the 9703*.hyd files. This data was added to the nutrient data in a spreadsheet format and then converted to iosheader format and then merged with the downcast data to include the ctd salinities, temperature and transmissivity. Dissolved oxygen concentration determined using an automated titration system consisting of a Brinkman Dosimat (model 665) and a PC 900 Colorimeter. See files 9703*.hyd for more detail. Information on Nutrient data for cruise 9703 : See file 9703nuts.txt for more detail on the nutrient analysis. Nutrient analysis was performed on an Autoanalyzer II, following the methods outlined in Barwell-Clarke and Whitney, 1997. Pooled deviation for nutrient data : A total of 180 samples were measured; of these, 20 samples were measured in duplicate to estimate variability. The pooled deviations were satisfactory. They may be slightly higher than for fresh samples. Sample pooled standard deviations are as follows : Nitrate 0.255 uM Silicate 0.421 uM Phosphate 0.075 uM Notes on factors affecting data quality of the nutrient data : Generally, the problem of alcohol contamination was much reduced (as compared to cruises 9603, 9611 and 9636). However, alcohol was noted in the storage bags for stations NI02, NI04, VI02, VI04, and GI02. For station VI04, alcohol was also noted in the phosphate test tubes. Draining and wiping the tubes after removal from the alcohol bath is strongly recommended. Regardless of their treatment, a thin layer of liquid (likely isopropanol) was present on all frozen PO4 samples. The samples were frozen on board ship and analyzed in the lab at IOS. Because of the low salinity of many of the samples, the nitrate and silicate samples were defrosted at room temperature for about 24 h. Phosphate samples were defrosted in lukewarm water or moving air for 30 min to 1 hour prior to analysis. Turbidity was measured using a DMQ baseline and was compared to an NaCl blank. The value obtained for the sample was subtracted from the average NaCl blank (n=2). This difference (+ or -) was added to the sample concentration. Samples originating in waters with less than 27 ppt salinity were selected for turbidity analysis. Turbidity values were quite variable. !--1--- -2-- ---3---- --4-- ---5--- --6-- --7-- --8--- ---9---- ---10--- --11- !Pressu Samp Salinity Oxyge Oxygen: Nitra Silic Phosph Temperat Salinity Trans !re le_ :Bottle n: Dissolv te_ ate ate ure missi ! Numb Disso ed plus_ vity ! er lved Nitri ! te !------ ---- -------- ----- ------- ----- ----- ------ -------- -------- ----- *END OF HEADER 0.0 164 26.6804 -99.0 -99.000 26.4 60.5 2.15 7.0260 26.7293 36.3 10.6 163 28.1071 -99.0 -99.000 27.4 59.0 2.33 7.1570 27.9344 46.5 20.2 162 29.4586 231.2 5.297 28.3 56.7 2.63 7.4353 29.1655 50.2 30.2 161 29.5401 241.5 5.533 27.7 55.8 2.42 7.6230 29.5377 53.5 50.5 160 29.6602 239.7 5.491 27.6 55.2 2.40 7.4015 29.6506 45.8 75.3 159 29.7466 240.9 5.520 27.7 54.8 2.37 7.4762 29.7488 45.6 100.5 158 29.9225 224.2 5.137 28.6 55.6 2.47 7.5121 29.8418 46.0 125.5 157 30.1270 -99.0 -99.000 28.7 55.5 2.51 7.9934 30.1253 55.0 150.7 156 30.5128 170.7 3.912 29.1 58.4 2.65 8.4859 30.5048 53.6 181.0 155 30.6502 155.3 3.560 29.3 58.5 2.66 8.6838 30.6482 49.8