*2013/12/16 15:11:46.22 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 1997/02/20 00:41:00.000 NUMBER OF RECORDS : 11 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 0 370.9 2 Sample_Number n/a 115 125 3 Salinity:Bottle PSS-78 28.1117 31.1934 4 Oxygen:Dissolved umol/kg 100.1 275 5 Oxygen:Dissolved mL/L 2.296 6.292 6 Nitrate_plus_Nitrite umol/L 27 29.8 7 Silicate umol/L 55.1 69.7 8 Phosphate umol/L 2.29 3.14 9 Temperature 'deg C (IPTS68)' 7.2536 9.2988 10 Salinity PSS-78 28.1521 31.1932 11 Transmissivity %/metre 41.2 56.4 $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\97030035.dwn ------------------------------------------------------------------ File name : 97030034.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 : GI03 EVENT NUMBER : 35 LATITUDE : 49 10.13992 N ! (deg min) LONGITUDE : 123 33.53989 W ! (deg min) WATER DEPTH : 380 $REMARKS Comments from secondary file: d:\geostr\9703\iosshell\97030035.dwn ------------------------------------------------------------------ Station Latitude : 49 10.22 N Longitude : 123 33.47 W Depth : 360 $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------------------ ------ ---------- -------- --------- --------- SPRD2IS 2.1 1998/08/31 12:31:06 0 11 MERGE 2.2 1998/08/31 13:43:22 11 11 HDREDIT2 1.0 1998/08/31 13:49:59 ? ? CLEAN 2.6 1998/08/31 14:47:58 11 11 HDREDIT2 1.0 1998/09/01 13:24:12 ? ? HDREDIT2 1.8 2003/10/16 16:31:34 ? ? CLEAN 4.5 2003/10/16 16:32:55 11 11 CHANGE_CTD_CHANNEL_NAMES 1.0 2013/12/16 15:11:46 11 11 $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\97030035.ios Secondary file: d:\geostr\9703\iosshell\97030035.dwn Comments from secondary file: d:\geostr\9703\iosshell\97030035.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\97030035.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\97030035.dwn ------------------------------------------------------------------ Alt S start position 49 10.17 N 123 33.60 W 00:35:17 02-20-1997 Alt S stop position 49 10.19 N 123 33.56 W 00:41:49 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 0.0 125 28.1117 275.0 6.292 27.0 58.6 2.29 7.2536 28.1521 46.6 10.6 124 29.0432 231.8 5.309 28.2 58.3 2.43 7.5574 29.0621 55.1 20.7 123 29.4224 224.4 5.139 28.4 57.1 2.32 7.6204 29.4480 55.5 30.7 122 29.6554 231.4 5.301 28.1 56.1 2.38 7.3539 29.6730 46.5 50.4 121 29.7104 237.3 5.437 27.7 55.2 2.35 7.3584 29.7341 41.2 75.5 120 29.8173 235.1 5.388 28.0 55.1 2.39 7.3963 29.8286 47.1 100.6 119 29.9386 230.3 5.278 28.5 56.0 2.45 7.5776 29.9457 55.1 150.0 118 30.1830 203.7 4.669 28.9 56.9 2.50 8.0386 30.1861 56.4 200.3 117 30.7361 146.6 3.360 29.4 60.0 2.72 8.8434 30.7598 52.1 300.2 116 31.1472 106.5 2.441 29.7 63.6 2.92 9.2790 31.1459 54.8 370.9 115 31.1934 100.1 2.296 29.8 69.7 3.14 9.2988 31.1932 45.5