CTD and hydrology bottle data from RV Franklin 10/94. Cruise FR 10/94 Hydrographic Sections in the Southern Indian Ocean (Great Australian Bight) Cruise dates: 12 November 1994 to 5 December 1994 Principal Investigator: Professor Matthias Tomczak Flinders Institute for Atmospheric and Marine Sciences (FIAMS) Flinders University, Adelaide Australia General notes. Anna Lebedev FIAMS data manager e-mail: anna@es.flinders.edu.au. 1. WOCE section name. These sections were added to the WOCE section network on the initiative of M. Tomczak. They form a closed box from the Australian south coast along 120E to 48S, then along 48S to 132E, then along 132E to the Australian south coast. At the moment, these sections have no WOCE name/number, but I submitted the data files to WOCE as WOCE section I11 on the suggestion of Dr. Tomczak. 2. Unit conversion. Nitrate, silicate, phosphate, nitrite and bottle oxygen data have been converted from UMOL/L to UMOL/KG using the density calculated from P=0, T=17 C (lab temperature, according to Dave Terhell (CSIRO)) and bottle salinity. If salinity was missing for a particular bottle, the interpolated salinity was used for density calculations. CTD dissolved oxygen data have been converted from UMOL/L to UMOL/KG using the density calculated from in-situ P,T and S. To convert the data expressed in micromole/liter units to micromole/kilogram units I divided the former data by the density as expressed in kilograms/liter (same as gm/cm3). 3. Additional parameters in the __.CTD files. SDTEMP - Standard deviation of good temperature samples in the interval SDCOND - Standard deviation of good conductivity samples in the interval -------------------------------------------------------------------------------------- CTD Processing Notes Fr 10/94 Neil White Co-Chief Scientist on the cruise CSIRO Division of Oceanography, Hobart Australia This cruise is part of the Australian contribution to WOCE and consisted of three deep sections in the southern Indian Ocean. The cruise was carried out with CTD underwater unit number 2. There are 69 stations numbered 1-69. The data is of reasonably good quality, but problems with salinometers and sample bottles have caused the salinity data to be less good than it ought to have been. Of the three Yeokal salinometers on board (including one which had just returned from service) not one was properly functional. The most usable of the three salinometers had a broken thermistor, so sample temperatures had to be taken manually using a DSRT! While this apparently gave good results, there were a number of stations for which the salinities appeared to be anomalous - the salinities for a complete station would be different from the adjacent (and very nearly equivalent) stations. Uncalibrated CID data for these groups of stations suggested that ther e were no changes in water properties, so data from stations 8, 21, 35, 43, 61 and 65 were rejected altogether. The sampling bottles used were designed and constructed by CSIRO. They were first trialled in mid- 1993 and some of the major problems fixed, but there are still problems. One bottle in particular produced clearly anomalous readings for about 40% of its samples! AR data for the two worst bottles were rejected, but it is clear from the CTD calibration process that there were still a large number of bad samples. These two factors combined to produce a salinity calibration that is not as good as I would like. There are a small gaps in a few stations. Some of these were introduced when salinity spikes causing density inversions in the 2 decibar averages were removed. There are four gaps of 2 decibars or so, however, which have no plausible explanation other than loss of data for a second or so when the data was logged. This is being investigated. These gaps occur in regions of low gradients, so should not cause any problems. The largest gap of 10 decibars occurs near the bottom of station 50 where some sediment or other matter fouled the conductivity cell. Pressure calibration Constants from the last laboratory calibration were used but a new offset term was calculated for each station from the pressure of the first 'in water' data records. These offsets range from 4.1 to 5.8 decibars. Temperature calibration Temperature calibration constants from the last laboratory calibration were used. Conductivity calibration Many groupings were tried and a large number of samples had to be thrown out because of the sahnometer and sample bottle problems. The best calibration seems to come from using the groups: 1-9, 10-23, 24-46, 47-48, 49-62, 63-69. The standard deviation of the salinity residuals is .0036 psu. ---------------------------------------------------------------------------------------------- CTD Processing Report Dissolved Oxygen: Fr10/94. D.J. Vaudrey CSIRO Division of Oceanography, Hobart, Australia General. FrlO/94 was a WOCE Section south along 120 degrees E to 48 degrees S, east to 132 degrees 30' E and north to Port Lincoln. 69 stations where carried out. The automated Dissolved Oxygen titration system was used operationally for the first time. Grouping. 1, 2 - 5, 6 - 15, 16 - 19, 20 - 27, 28 - 35, 36 - 42, 42 - 46, 47 - 56, 57 - 66, 67 - 69. Calibration. Mean residual over all stations = 0.074 UMOL/L (Not removed) Standard Deviation of residuals = 2.749 UMOL/L (Equiv. to 0.062 mL/L). Using 1482 bottles out of 1556 possible. Deep (>750 m) SD = 2.070 UMOL/L (Equiv. to 0.046 mL/L) stn bias slope pcor tcor tau wt sd group # 1 0.000 0.26109E+01 0.10270E-02-0.34255E-01 0.10069E+01 0.80000E+01 0.85498E-01 6 2 0.000 0.21947E+01 0.14981E-03-0.28298E-01 0.69124E+00 0.80000E+01 0.19871E+00 64 3 0.000 0.21947E+01 0.14981E-03-0.28298E-01 0.69124E+00 0.80000E+01 0.19871E+00 64 4 0.000 0.21947E+01 0.14981E-03-0.2829SE-01 0.69124E+00 0.80000E+01 0.19871E+00 64 5 0.000 0.21947E+01 0.14981E-03-0.28298E-01 0.69124E+00 0.80000E+01 0.19871E+00 64 6 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 7 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 8 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 9 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 10 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 11 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 12 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 13 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 14 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 15 0.000 0.22475E+01 0.14050E-03-0.29379E-01 0.78079E+00 0.80000E+01 0.16233E+00 232 16 0.000 0.22948E+01 0.13580E-03-0.31430E-01 0.69381E+00 0.80000E+01 0.22940E+00 90 17 0.000 0.22948E+01 0.13580E-03-0.31430E-01 0.69381E+00 0.80000E+01 0.22940E+00 90 18 0.000 0.22948E+01 0.13580E-03-0.31430E-01 0.69381E+00 0.80000E+01 0.22940E+00 90 19 0.000 0.22948E+01 0.13580E-03-0.31430E-01 0.69381E+00 0.80000E+01 0.22940E+00 90 20 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 21 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 22 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 23 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 24 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 25 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 26 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+01 0.16303E+00 172 27 0.000 0.22798E+01 0.13690E-03-0.32340E-01 0.72528E+00 0.80000E+0l 0.16303E+00 172 28 0.000 0.22637E+01 0.13780E-03-O.32247E-01 0.61208E+00 0.800O0E+01 0.16420E+00 182 29 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 30 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 31 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 32 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 33 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 34 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 35 0.000 0.22637E+01 0.13780E-03-0.32247E-01 0.61208E+00 0.80000E+01 0.16420E+00 182 36 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 37 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 38 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 39 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 40 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 41 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 42 0.000 0.22501E+01 0.13929E-03-0.31104E-01 0.67462E+00 0.80000E+01 0.17951E+00 153 43 0.000 0.22911E+01 0.13617E-03-0.32114E-01 0.50202E+00 0.80000E+01 0.19046E+00 90 44 0.000 0.22911E+01 0.13617E-03-0.32114E-01 0.50202E+00 0.80000E+01 0.19046E+00 90 45 0.000 0.22911E+01 0.13617E-03-0.32114E-01 0.50202E+00 0.80000E+01 0.19046E+00 90 46 0.000 0.22911E+01 0.13617E-03-0.32114E-01 0.50202E+00 0.80000E+01 0.19046E+00 90 47 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 48 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 49 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 50 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 51 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 52 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 53 0.000 0.22726E+01 0.13752E-03-0.3113SE-01 0.66418E+00 0.80000E+01 0.16197E+00 235 54 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 55 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 56 0.000 0.22726E+01 0.13752E-03-0.31138E-01 0.66418E+00 0.80000E+01 0.16197E+00 235 57 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 58 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 59 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17183E+00 231 60 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 61 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 62 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 63 0.000 0.22671E+01 0.13777P-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 64 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 65 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 66 0.000 0.22671E+01 0.13777E-03-0.29564E-01 0.75438E+00 0.80000E+01 0.17163E+00 231 67 0.000 0.23767E+01 0.91876E-04-0.30855E-01 0.83919E+00 0.80000E+01 0.12381E+00 38 68 0.000 0.23767E+01 0.91876E-04-0.30855E-01 0.83919E+00 0.80000E+01 0.12381E+00 38 69 0.000 0.23767E+01 0.91876E-04-0.30855E-01 0.83919E+00 0.80000E+01 0.12381E+00 38