The SeaWater library of EOS-80 seawater properties is obsolete; it has been superseded by the Gibbs SeaWater (GSW) Oceanographic Toolbox of the International Thermodynamic Equation Of Seawater - 2010, (TEOS-10). The official site for the thermodynamic properties of seawater is www.TEOS-10.org. TEOS-10 is based on a Gibbs function formulation from which all thermodynamic properties of seawater (density, enthalpy, entropy sound speed, etc.) can be derived in a thermodynamically consistent manner. TEOS-10 has been endorsed by SCOR and IAPSO and has been adopted by the Intergovernmental Oceanographic Commission at its 25th Assembly in June 2009 (http:///www.teos-10.org/pubs/IOC-XXV-3_e.pdf) to replace EOS-80 as the official description of seawater and ice properties in marine science. A significant change compared with past practice is that TEOS-10 uses Absolute Salinity SA (mass fraction of salt in seawater) as opposed to Practical Salinity SP (which is essentially a measure of the conductivity of seawater) to describe the salt content of seawater. Ocean salinities now have units of g/kg. The GSW Oceanographic Toolbox, http://www.teos-10.org/software.htm has almost 100 functions, such as density, entropy, enthalpy, Conservative Temperature, buoyancy frequency, and various geostrophic streamfunctions. Historical Releases of the now-obsolete SeaWater library. SEAWATER Library Version 3.0 (for Matlab 5.x onwards) is a Library of MATLAB Computational Routines for the EOS-80 Properties of Seawater. Developed by Phil Morgan, CSIRO Marine Research, updated and maintained by Lindsay Pender Lindsay.pender@csiro.au Last updated 2006. LIST OF ROUTINES: - SW_ADTG Adiabatic temperature gradient - SW_ALPHA Thermal expansion coefficient (alpha) - SW_AONB Calculate alpha/beta (a on b) - SW_BETA Saline contraction coefficient (beta) - SW_BFRQ Brunt-Vaisala Frequency Squared (N^2) - SW_COPY Copyright and Licence file - SW_CP Heat Capacity (Cp) of Sea Water - SW_DENS Density of sea water - SW_DENS0 Denisty of sea water at atmospheric pressure - SW_DIST Distance between two lat, lon coordinates - SW_DPTH Depth from pressure - SW_F Coriolis factor "f" - SW_FP Freezing Point of sea water - SW_G Gravitational acceleration - SW_GPAN Geopotential anomaly - SW_GVEL Geostrophic velocity - SW_INFO Information on the SEAWATER library - SW_PDEN Potential Density - SW_PRES Pressure from depth - SW_PTMP Potential temperature - SW_SALS Salinity of sea water - SW_SALT Salinity from cndr, T, P - SW_SATAr Solubility (saturation) of Ar in seawater -SW_SATN2 Solubility (saturation) of N2 in seawater - SW_SATO2 Solubility (saturation) of O2 in seawater - SW_SVAN Specific volume anomaly - SW_SVEL Sound velocity of sea water - SW_SMOW Denisty of standard mean ocean water (pure water) - SW_TEMP Temperature from potential temperature - SW_TEST Run test suite on library - SW_VER Version number of SEAWATER library LOW LEVEL ROUTINES CALLED BY ABOVE: (also available for you to use) - SW_C3515 Conductivity at (35,15,0) - SW_CNDR Conductivity ratio R = C(S,T,P)/C(35,15,0) - SW_SALDS Differiential Ds/d(sqrt(Rt)) at consta

This record describes the nutrient data collected as part of the 1993-1996 South East Fishery Ecosystem Study undertaken by CSIRO Division of Fisheries. Nutrient samples, including measurements of temperature, salinity, dissolved oxygen, phosphate, nitrate, silicate and nitrite, were taken from Niskin bottle samples at a range of depths on seven transects across the continental shelf in eastern Bass Strait, south-west Victoria, and south-west NSW waters. Temperature, salinity and density data were collected in July 1993 (cruise SS 05/93), August 1994 (cruise SS 05/94), April 1996 (cruise SS 02/96) and November 1996 (cruise SS 06/96). In addition to the broad-scale, transect-based surveys described above, representatives of 4 separate habitat types (Big Gutter, Gabo Reef, Big Horsehoe and Broken Reef) were sampled more intensively and the data will be analysed along with the broad-scale survey dataset. The processed data are held as part of the CSIRO Marine Research CTD data holdings.

This record describes the nutrient data collected as part of the 1991-1993 Tasmanian Slope Trophodynamics Study undertaken by CSIRO Division of Fisheries. Nutrient samples, including measurements of nitrate (NO3), nitrite (NO2), ammonia (NH4), dissolved organic nitrogen (DON), total dissolved nitrogen (TDN), total nitrogen (TN), total particulate nitrogen (TPN), phosphate (PO4), dissolved organic phosphorus (DOP), total dissolved phosphorus (TDP), total phosphorus (TP) and total particulate phosphorus (TPP), were taken from Niskin bottle samples at a range of depths (surface to 1500 meters) on 4 cruises of FRV "Southern Surveyor" on three 60 km transects across the continental shelf to the south and south-east of Tasmania in July 1991 (cruise SS 02/91), February 1992 (cruise SS 01/92), November 1992 (cruise SS 04/92) and April 1993 (cruise SS 03/93).

Data collection was in a seasonal (HES Surveys)and a weekly/fortnightly (CM Surveys) regime. Water quality and trace metal data were collected during the August/September 1998 Contaminants Survey (HES10A). This record references the hydrology, nutrients and water quality data for the Huon Estuary Study. This includes nitrite, nitrate, total dissolved nitrogen, total nitrogen, phosphate, total dissolved nitrogen, silicate, salinity, dissolved oxygen, ammonia, suspended solid and trace metal data. The final data for these data parameters has been loaded into the project database (and subsequently the oracle database) see Marlin record 'Huon Estuary Study-Database'. However, these final datasets along with any intermediate files have also been written to cdrom as text files for archiving purposes by the Data Centre, Hobart. Methods documentation has also been written to the archive cdrom. The completed Field Sheets for all surveys have been stored by the Data Centre-Hobart.

Ecosystem process measurements were made on sediment sampled with a box core and water sampled from CTD profiles. For sediments, measurements were of wet/dry weight ratio, total organic carbon, chlorophyll and stable isotopes, nitrogen cycling (nitrogen fixation and denitirification) and oxygen demand. For water samples, measurements were of total suspended solids, chlorophyll and stable isotopes. The survey design was a natural experiment (i.e. control-impact, but not before-after) to test the long-term, broadscale effects of prawn fishing on non-target species and habitats. Deployments were stratified by fishing intensity (three strata) and day/night. The survey was repeated in three regions: (a) north of Groote Eylandt, (b) north-east of the Vanderlins, and (c) north of Mornington Island.

This dataset describes data collected from 5/11/96 to 5/10/98 in the Huon Estuary, Tasmania at weekly or fortnightly time frames depending on algal bloom conditions. Data were collected at five of the biological station from the Huon Estuary Spatial Surveys (see separate MarLIN entry). The five stations were located at Hideaway, Kilalla, and Wheatley's Bays, Brabazon Park and Port Cygnet. At each sampling station a CTD was deployed and three niskin bottle samples were taken, one at each of the surface, middle and bottom water layers. Bottle samples have been analysed for salinity, dissolved oxygen, nutrient and pigments. An integrated water sample (for algal presence data) and a phytoplankton net sample were also taken. During algal blooms spectral absorption was analysed and algal counts were calculated.

This dataset describes data collected from the Huon Estuary (Tasmania). Data was collected over a three day period approximately every three months from March 1996 until August 1998. 10 surveys were completed (HES1 to HES10). Data was collected from 61 sites, ranging from 0 salinity at Judbury to a salinity of 35 at the seaward end of the estuary near Huon Island. 5 sites were located near fish farms (refer to the separate metadata record for weekly data at these sites). At these sites, data was collected for all parameters (CTD, salinity, dissolved oxygen, nutrients, pigments, spectral absorbance and phytoplankton) measured. At a further 31 sites spread over the estuary, data was collected for the physical and chemical parameters only. At the remaining 25 sites, only physical (CTD) data was collected. Below Port Huon, samples were collected at three depths - surface, fluorescence maximum and from within the salt wedge. Above Port Huon, samples were collected from the surface and from the salt wedge (where present). This dataset forms part of the CSIRO Marine Research Huon Estuary study, conducted over the period 1996-1998.

This record references the database of the final data from the Huon Estuary Study. The data from the project's access database has been transfered into an oracle database which is available on-line to project members. The access database tables have also been exported to text files for archiving to cdrom (held in CMR Data Centre-May 2004.) Data Dictionary files have also been stored on cdrom along with technical reports which describe the data modelling undertaken for the project. The database contains ammonia, arsenic, ctd header, dissolved oxygen, mercury, nutrient, organic matter, pigment, salinity, sediment, suspended solids, taxon counts and dominance data in their final processed form. Data in the database was collected at 61 stations on a seasonal regime (HES Surveys) Weekly/fortnightly (CM Surveys)at 5 of those stations. A sediment survey in May 1997 (SED1) and a Contaminants Survey in August/September 1998 (HES10A) were also carried out. The study was undertaken over the period 1996-1998. Refer to the other Huon Estuary Study metadata records to explore datasets which were not loaded into the database such as the ctd, snapshot and moored instrument data.