*2013/12/16 15:13:14.26 *IOS HEADER VERSION 1.10 2011/10/26 2011/10/26 *FILE START TIME : UTC 1997/05/28 09:39:00.000 NUMBER OF RECORDS : 8 DATA DESCRIPTION : Bottle:Rosette:Up:Stop + CTD:Down FILE TYPE : ASCII DATA TYPE : REAL*4 NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ---------------------- --------------- -------------- -------------- 1 Pressure decibar 1.5 117.1 2 Sample_Number n/a 85 92 3 Oxygen:Dissolved umol/kg 188.3 305.8 4 Oxygen:Dissolved mL/L 4.315 6.993 5 Nitrate_plus_Nitrite umol/L 8.2 29.4 6 Silicate umol/L 23.5 55.5 7 Phosphate umol/L 1.11 2.46 8 Temperature:Primary 'deg C (ITS90)' 8.0128 11.1699 9 Salinity:T0:C0 PSS-78 27.545 30.2048 10 Transmissivity %/metre 15.8 63.8 $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 ' ' 6 F ' ' 1 4 -99 ' ' 8 F ' ' 3 5 -99 ' ' 6 F ' ' 1 6 -99 ' ' 6 F ' ' 1 7 -99 ' ' 7 F ' ' 2 8 -99 ' ' 9 F ' ' 4 9 -99 ' ' 9 F ' ' 4 10 -99 ' ' 6 F ' ' 1 $END $REMARKS Raw data in file 97250023 VI03 = 10.025 ! Volume of iodate standard (cm**3) NI03 = .01013469 ! Normality of iodate standard VREG = 2.0 ! Volume of sample displaced by reagents (cm**3) DOREG = 0.0017 ! Absolute amount of O2 added with reagents (ml) UFLAG = -1 ! 0|-1, -1 indicates DO_mass is valid Comments from secondary file: d:\geostr\9725\iosshell\97250023.dwn ------------------------------------------------------------------ This file converted from Sea-Bird file: W:\CTD\9725\97250022.cnv $END *ADMINISTRATION MISSION : 1997-25 AGENCY : IOS, Ocean Science and Productivity, Sidney, B.C. COUNTRY : Canada PROJECT : Strait of Georgia SCIENTIST : Juhasz T. PLATFORM : Vector *LOCATION STATION : NI01 EVENT NUMBER : 23 LATITUDE : 49 13.38000 N ! (deg min) LONGITUDE : 123 51.30000 W ! (deg min) WATER DEPTH : 122 *INSTRUMENT TYPE : Bottle MODEL : Niskin 10 litre $REMARKS Dissolved oxygen concentration determined using an automated titration system consisting of a Brinkman Dosimat (model 665) and a PC 900 Colorimeter. Comments from secondary file: d:\geostr\9725\iosshell\97250023.dwn ------------------------------------------------------------------ SOFTWARE VERSION 4.219 $END *HISTORY $TABLE: PROGRAMS ! Name Vers Date Time Recs In Recs Out ! ------------------------ ------ ---------- -------- --------- --------- AutoOxy.bas 2.1 1997/05/28 20:01:35 ' ' 8 AutoFix.bas 1.0 1997/05/29 20:05:53 8 8 CLEAN 2.2 1997/05/29 20:10:33 8 8 REMOVECH 3.0 1997/08/25 08:15:26 8 8 MERGE 1.0 1997/08/25 08:29:38 8 8 MERGE 2.2 1998/11/30 13:52:02 8 9 HDREDIT2 1.1 1998/11/30 14:06:27 ? ? REVERSE 1.1 1998/12/01 15:47:53 9 9 MERGE 2.2 1998/12/01 15:52:39 9 9 CLEAN 2.61 1998/12/01 16:11:21 9 9 CLEAN 2.61 1998/12/02 09:06:43 9 9 HDREDIT2 1.1 1998/12/02 14:51:29 ? ? CLEAN 2.61 1998/12/03 13:28:26 8 8 REMOVECH 6.0 2003/10/20 16:09:35 8 8 HDREDIT2 1.8 2003/10/20 16:10:42 ? ? CLEAN 4.5 2003/10/20 16:10:52 8 8 CHANGE_CTD_CHANNEL_NAMES 1.0 2013/12/16 15:13:14 8 8 $END $REMARKS C.H. Culbertson's paper on Dissolved Oxygen in the 'Woce Hydrographic Program Operations and Methods - July 1991' OxyRedo fixs DO_mass and DO_volumne when incorrect values for VIO3, NIO3, blank, or standard have been entered. CLEAN functions performed: - Reset #RECS, MIN & MAX values in header. -The following CHANNEL(S) were removed from file. Thiosulfate_titer flask_Number Flask_volume Blank Standard -The following MERGE parameters were used: Primary File Extension: rem Secondary File Extension: sal Merge Channel: Sample_no Merge Scheme Used: Add Secondary to Primary Overlap Scheme Used: Keep Primary Primary Channels to Include: Sample_no,Pressure,Temperature:Sample,Salinity:CTD,Dissolved_oxygen:mas,Dissolv Secondary Channels to Include: Sample_no,Salinity:bottle -The following MERGE parameters were used: Merge Channel: Sample_no Merge Scheme Used: Interweave Records from Both Files Overlap Scheme Used: Keep Primary Primary Channels to Include: Pressure,Salinity:bottle,Dissolved_Oxygen:mas,Dissolved_Oxygen:vol,Salinity:ctd Secondary Channels to Include: nitrate_plus_nitrite,Silicate,Orthophosphate Primary file : d:\geostr\9725\iosshell\97250023.hyd Secondary file: d:\geostr\9725\iosshell\97250023.nut -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: Sample_no,Salinity:bottle,Dissolved_Oxygen:mas,Dissolved_Oxygen:vol,nitrate_plu Secondary Channels to Include: Temperature:Primary,Salinity:T0:C0,Transmissivity Primary file : d:\geostr\9725\iosshell\97250023.rev Secondary file: d:\geostr\9725\iosshell\97250023.dwn Comments from secondary file: d:\geostr\9725\iosshell\97250023.dwn ------------------------------------------------------------------ -The following DELETE parameters were used: Surface Record Removal: Low Sal & Last Press Min Maximum Surface Pressure (relative): 20.00 Minimum Surface Salinity: .000 Surface Swell Pressure Tolerance: .50 Pressure filtered over width: 11 Swells deleted. Warning message if pressure difference of 2.00 Drop rates< .20m/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 = 0.0 Calibration file = 9725CORR.CTR -The following CHANNEL(S) were removed from file. Conductivity:secondary Temperature:secondary Conductivity:primary Salinity:t1:c1 Scan_Number Flag 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. CLEAN functions: - Reset #RECS, MIN & MAX values in header. - Change Pad Value to -99 in All Channels. - Clear the Start column in the Header Channel Details table. -The following CHANNEL(S) were removed from file. Salinity:up:ctd:uncorrected CLEAN functions: - Reset #RECS, MIN & MAX values in header. - Change Pad Value to -99 in All Channels. $END *COMMENTS Comments from secondary file: d:\geostr\9725\iosshell\97250023.dwn ------------------------------------------------------------------ SBE HEADER Sea-Bird SBE 9 Raw Data File: FileName = C:\DATA\9725\97250022.DAT Software Version 4.219 Temperature SN = 2095 Conductivity SN = 1762 Number of Bytes Per Scan = 24 Number of Voltage Words = 2 System UpLoad Time = May 28 1997 09:38:58 NMEA Latitude = 49 13.36 N NMEA Longitude = 123 51.32 W NMEA UTC (Time) = 09:35:54 Store Lat/Lon Data = Add to Header Only Command Line = seasave Station ID: NI01 Depth: 122 Lat: Long: Notes # nquan = 10 # nvalues = 4144 # units = metric # name 0 = scan: scan number # name 1 = pr: pressure [db] # name 2 = t090: temperature, pri, ITS-90 [deg C] # name 3 = t190: temperature, sec, ITS-90 [deg C] # name 4 = sal00: salinity, PSS-78 [PSU], T0, C0 # name 5 = sal11: salinity, PSS-78 [PSU], T1, C1 # name 6 = xmiss: transmissometer # name 7 = c0S/m: conductivity, primary [S/m] # name 8 = c1S/m: conductivity, secondary [S/m] # name 9 = flag: 0.000e+00 # span 0 = 1, 4144 # span 1 = 1.657, 117.013 # span 2 = 8.0037, 11.3351 # span 3 = 8.0041, 11.3264 # span 4 = 27.4599, 30.2383 # span 5 = 27.4121, 30.1828 # span 6 = 60.26, 89.54 # span 7 = 3.117711, 3.190362 # span 8 = 3.112930, 3.185207 # span 9 = 0.000e+00, 0.000e+00 # interval = seconds: 0.0416667 # start_time = May 28 1997 09:38:58 # bad_flag = -9.990e-29 # sensor 0 = Frequency 0 temperature, primary, 2095, 26-Sep-96s # sensor 1 = Frequency 1 conductivity, primary, 1762, 23-Jul-96s, cpcor = -9.5 700e-08 # sensor 2 = Frequency 2 pressure, 63507, 01-11-1996 # sensor 3 = Frequency 3 temperature, secondary, 2142, 23-Jul-96s # sensor 4 = Frequency 4 conductivity, secondary, 1763, 23-Jul-96s, cpcor = -9 .5700e-08 # sensor 5 = Extrnl Volt 2 transmissometer, 182D # datcnv_date = May 28 1997 11:49:09, 4.219 # datcnv_in = 97250022.DAT 97250007.CON # datcnv_skipover = 0 # wildedit_date = Aug 24 1997 12:56:39, 4.221 # wildedit_in = 97250022.CNV # wildedit_pass1_nstd = 2.0 # wildedit_pass2_nstd = 5.0 # wildedit_npoint = 50 # wildedit_vars = pr t090 sal00 xmiss # wildedit_excl_bad_scans = yes # celltm_date = Aug 24 1997 13:12:46, 4.221 # celltm_in = 97250022.CNV # celltm_alpha = 0.0300, 0.0000 # celltm_tau = 7.0000, 0.0000 # filter_date = Aug 24 1997 13:45:24, 4.221 # filter_in = 97250022.CNV # filter_low_pass_tc_A = 0.150 # filter_low_pass_tc_B = 0.100 # filter_low_pass_A_vars = pr # filter_low_pass_B_vars = # file_type = ascii END* Comments added using HEADER EDIT program : ------------------------------------------- Chemistry data for cruise 9725 : The bottle salinity data (salinity:bottle), the uncorrected upcast salinities (salinity:up:ctd:uncorrected) and the dissolved oxygen data are from the 9725*.hyd files. The nutrient data was converted to iosheader format and then merged with these files. The downcast ctd salinities (Salinity:T0:C0), the downcast temperature (Temperature:Primary and the transmissivity data were then merged with the rest of the data using an interpolation scheme. Dissolved oxygen concentration determined using an automated titration system consisting of a Brinkman Dosimat (model 665) and a PC 900 Colorimeter. See files 9725*.hyd for more detail. Information on Nutrient data for cruise 9725 : See files 9725nuts.xls and controls.xls 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. Analysis done by contract by Melanie Quenneville. Pooled deviation for nutrient data : A total of 198 samples were measured; of these, 27 samples were measured in duplicate to estimate variability. Sample pooled standard deviations are as follows : Nitrate 0.37 uM Silicate 0.98 uM Phosphate 0.07 uM Pooled deviation values were higher than normal for nitrate and silicate, but are still within limits (Barwell-Clarke & Whitney, 1997). The standards which were measured as unknown samples were very close to expected values with little deviation. Calibration : Standards used for these samples had been previously prepared and compared to Sagami commercially prepared standards (see file controls.xls for details). Factors affecting the nutrient data quality : Generally, the problem of alcohol contamination was much reduced. However, alcohol was noted in the storage bags for stations NI06, NI04, VI02, VI04, and GI03. The nitrate and silicate samples were defrosted at room temperature for about 24 h. Phosphate samples were defrosted in moving air for 30 min to 1 h prior to analysis. Samples from depths of 20 m or shallower were centrifuged at moderately slow speeds for 30 minutes to remove particulate (clay or algae) from the samples; both nitrate/silicate and phosphate samples were centrifuged. Although most samples had no visible pellet, the turbidity due to particulate was very low in most samples, and therefore the centrifuging was likely effective in removing the particles. Turbidity was measured using a DMQ baseline. The expected turbidity due to the salt effect was calculated from a series of seawater solutions of varying salinities. This calculated value was added to the measured turbidity; the sum was subtracted from the average value expected in a 32 ppt blank. The difference was the particulate proportion. The sum of the salt effect and particulate factors was added to the nutrient concentration. See the sheets labelled Salt Effect and Turbidity (in file controls.xls) for the calculations. As mentioned above, the correction for particulate was generally very small. Nitrate was not corrected for turbidity because the samples were not different from the baseline. (The particulate may have been trapped in the cadmium column). Initially, samples originating in waters with less than 27 ppt salinity were selected for turbidity analysis. Later, all samples from waters less than 20 m were measured. !--1--- -2-- --3-- ---4--- --5-- --6-- --7--- ---8---- ---9---- --10- !Pressu Samp Oxyge Oxygen: Nitra Silic Phosph Temperat Salinity Trans !re le_ n: Dissolv te_ ate ate ure: :T0:C0 missi ! Numb Disso ed plus_ Primary vity ! er lved Nitri ! te !------ ---- ----- ------- ----- ----- ------ -------- -------- ----- *END OF HEADER 1.5 92 305.8 6.993 8.2 23.5 1.11 11.1699 27.5450 15.8 10.6 91 237.8 5.441 20.5 38.5 1.93 9.2678 28.6422 43.8 19.9 90 219.6 5.028 24.6 47.3 2.27 8.8094 29.0511 58.1 29.7 89 205.5 4.706 26.6 50.6 2.35 8.5844 29.2351 62.3 50.5 88 198.5 4.548 28.8 53.8 2.07 8.1884 29.5155 63.8 74.9 87 194.4 4.453 29.4 55.4 2.46 8.0128 29.6983 63.4 100.4 86 192.4 4.408 29.0 54.7 2.35 8.0540 29.9951 60.9 117.1 85 188.3 4.315 28.3 55.5 2.39 8.1381 30.2048 59.1