Chemistry of the Cudgegong River, New South Wales

1979 ◽  
Vol 30 (3) ◽  
pp. 325 ◽  
Author(s):  
GL Muir ◽  
WD Johnson

Studies of the chemical characteristics of the Cudgegong River, N.S.W., were made in December 1974, November and December 1975 and January and June 1976. The concentrations of the major ions showed correlation with the geology of the catchment and the river's discharge. The order of dominance for ions in most of the river was found to be Mg2+ > Na+ > Ca2+ and HCO3- > Cl- > SO42-, but in the uppermost reaches of the river the order was Na+ > Mg2+ > Ca2+ and Cl- > HCO3- > SO42-. The origin and variation of ions, mineral weathering and ion-ion associations are discussed.

1977 ◽  
Vol 28 (6) ◽  
pp. 683 ◽  
Author(s):  
WD Johnson ◽  
GL Muir

Preliminary studies of the chemical characteristics of the Castlereagh River were made in 1973. The concentrations of the major ions vary considerably with distance from the head of the river and this variation shows a marked correlation with the geology of the catchment area. The order of dominance for ions within the system was found to be Na+ > Ca2+ > Mg2+ > K+ and HCO3- > Cl- > SO42- for the main river, and creeks in the eastern catchment gave Mg2+ > Ca2+ > Na+ > K+ and Cl- > HCO3- > SO42-. The relative amounts of the dominant chemical species are discussed and suggestions are made for the possible origins of specific components.


1970 ◽  
Vol 21 (2) ◽  
pp. 103 ◽  
Author(s):  
WD Williams ◽  
KF Walker ◽  
GW Brand

Chemical data are presented for several lakes and two impoundments on the Kosciusko and Monaro plateaux in south-eastern New South Wales, and for two rivers (Paroo and Darling), several freshwater lakes, and deposits from some dry salt lakes in western New South Wales. The concentrations of the major cations and anions, nitrate plus nitrite, and orthophosphate were investigated. For lake deposits, only major ions were investigated. The Kosciusko lakes were extremely fresh (salinity <3 p.p.m.) and chemically dominated by sodium and either bicarbonate, chloride or sulphate ions ; the Monaro peneplain lakes had a considerable salinity range (69-21,244 p.p.m.), and, with increasing salinity, sodium and chloride quickly assumed dominance. The Paroo and Darling Rivers had salinities <400 p.p.m, and the western freshwater lakes <850 p.p.m.; in both rivers and lakes, sodium and bicarbonate were the dominant ions. Deposits from dry salt lakes were mainly sodium chloride.


1985 ◽  
Vol 7 (1) ◽  
pp. 32
Author(s):  
L Davies

The Hassall Report was based on an economic survey of 150 landholders throughout the Western Division of New South Wales for the financial years 197711978, 197811979 and 1979/1980. The survey used taxation records, however. some attitudinal informa- tion was collected from face to face interviews with landholders. The survey examined the financial performance in relation to the carrying capacity of the property and in relation to five land- scape categories. The survey found that the financial performance of the landscape categorized as "tall dense woodlands with scrub" was significantly poorer than for other landscape categories. The report has been used as a major reference for the recently completed Joint Parliamentary Committee Enquiry into the Western Division of New South Wales and has influenced a number of the economic recommendations in this report. This paper gives a brief summary of the financial results, a comparison of these results to those of other agricultural areas and the major policy recom- mendations made in the report.


1828 ◽  
Vol 118 ◽  
pp. 113-151 ◽  

The following nebulæ and clusters of stars in the southern hemisphere were observed by me at my house in Paramatta, situated about 6″ of a degree south and about I 8 .78 of time east of the Brisbane Observatory. The observations were made in the open air, with an excellent 9-feet reflecting telescope, the clear aperture of the large mirror being nine inches. This telescope was occasionally fitted up as a meridian telescope, with a strong iron axis firmly attached to the lower side of the tube nearly opposite the cell of the large mirror, and the ends of the axis rested in brass Y’s, which were screwed to blocks of wood let into the ground about 18 inches, and projecting about 4 inches above the ground; one end of the axis carried a brass semicircle divided into half degrees and read off by a vernier to minutes. The position and index error of the instrument were ascertained by the passage of known stars. The eye end of the telescope was raised or lowered by a cord over a pulley attached to a strong wooden post let into the ground about two feet: with this apparatus I have observed a sweep of eight or ten degrees in breadth with very little deviation of the instrument from the plane of the meridian, and the tremor was very little even with a considerable magnifying power. I made drawings or representations of a great number of the nebulæ and clusters at the time of observation, several of which are annexed to this paper; and also very correct drawings of the Nebulæ major and minor, together with a representation of the milky nebulosity surrounding the star η Robur Caroli. The places of the small stars in the Nebulæ major and minor, and also those accompanying the η Robur Caroli, I ascertained by the mural circle in the year 1825, at which time I was preparing to commence a general survey of the southern hemisphere. These stars being laid down upon the chart, enabled me to delineate the nebulosity very accurately. The nebulæ are arranged in the order of their south polar distances to the nearest minute for 1827, and in zones for each degree in the order of their right ascension. The column on the right hand shows the number of times the object has been observed.


2010 ◽  
Vol 58 (4) ◽  
pp. 205 ◽  
Author(s):  
David Peacock ◽  
Ian Abbott

We reviewed historical literature and obtained nearly 200 records of the mongoose in Australia up to 1942. Although the earliest importations (from 1855) were for its snake-killing prowess, often as entertainment, its perceived potential as a control agent for the European rabbit (Oryctolagus cuniculus) plague saw concerted introductions made in New South Wales, Victoria and South Australia, primarily in 1883 and 1884. At least 1000 mongoose were released to control rabbits at 14 reported release locations in these states. As many as 700 of these mongoose were reported released in one New South Wales rabbit-control trial. These numbers indicate that insufficient propagule pressure does not explain why Australia escaped the additional devastation of an established mongoose population. The only reason stated for the failure of the mongoose releases to control rabbits is destruction of the mongoose by rabbit trappers, both inadvertently and in seeking to protect their employment. Unfavourable climate was implicated by CLIMATCH modelling in the failure of all releases, especially those into semiarid areas such as western New South Wales. No contemporary detail could be located of the reported 1884 failed introduction of ‘numbers’ of mongoose into North Queensland to control rats in sugarcane plantations.


Soil Research ◽  
1976 ◽  
Vol 14 (3) ◽  
pp. 305 ◽  
Author(s):  
PH Walker ◽  
RJ Coventry

Soil profile data from river terrace sequences on the New South Wales coast and southern highlands have been summarized. In all sequences the profiles have a progressive increase in soil development from low alluvial benches to flood plains to terraces. The general similarity of soils among these and other alluvial sequences in eastern New South Wales is the basis of a descriptive generalization in terms of five profile stages: stratic stage on low alluvial benches; cumulic stage on flood plains; low-contrast solum stage on low terraces; high-contrast solum stage on high terraces; extended subsolum stage on highest terraces. Sufficient lack of correlation occurs between sequences to suggest that the profile stages are groupings within a continuous spectrum of profile variation, the whole representing the one pedogenetic pathway. Pedogenesis in these alluvial landscapes is considered to progress through the development, first of a biotic profile which reaches a maximum within 1000 years, which is then degraded with the onset of mineral weathering and B horizon development, to a maximum solum form within 30 000 years. The rates of change of biotic and mineral profile components are sufficiently slow that only broad limits of confidence can be applied to soil stratigraphic correlations based on field morphology alone.


2012 ◽  
Vol 16 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Damien W Riggs ◽  
Clemence Due ◽  

Whilst feminist commentators have long critiqued surrogacy as a practice of commodification, surrogacy as a mode of family formation continues to grow in popularity. In this paper we explore public representations of surrogacy through a discourse analytic reading of submissions made in Australia to an Inquiry regarding surrogacy legislation. The findings suggest that many submissions relied upon normative understandings of surrogates as either ‘good women’ or ‘bad mothers’. This is of concern given that such public representations may shape the views of those who utilize surrogacy services in ways that limit attention to the ethics of surrogacy.


Polar Record ◽  
1997 ◽  
Vol 33 (185) ◽  
pp. 145-150 ◽  
Author(s):  
William Barr

AbstractIn 1853 William Parker Snow (who had earlier participated in an expedition to search for the missing Franklin expedition in what is now the Canadian Arctic) decided to sink the money he had made in Melbourne during the Australian gold rush into a private expedition to search for Franklin, starting from Melbourne. In the southern autumn of 1853, he bought a 16-ton cutter, The Thomas, and, despite the handicaps of exorbitant prices and shortage of labour, fitted the vessel out for an Arctic expedition during the continuing frenzy of the gold rush. After calling at Sydney, The Thomas started north but encountered a series of violent winter gales that damaged her severely and forced Snow to seek shelter in the mouth of the Clarence River in northeastern New South Wales. By the time the storm damage had been repaired, all but two of Snow's men had deserted. Still in hopes of trying again, Snow sailed his cutter back south to Sydney and there finally abandoned this, one of the more bizarre episodes of the Franklin search.


1969 ◽  
Vol 9 (39) ◽  
pp. 422 ◽  
Author(s):  
A Lazenby ◽  
JMA Schiller

A study was made in seed boxes at Armidale, New South Wales, on a red earth soil, of the effects of two soil tilths (particles<0.3 cm and between 0.6 and 1.25 cm), three seeding depths (surface seeding, 1.25 cm and 2.5 cm), and three levels of applied phosphorus (the equivalents of phosphorus in nil, 378 kg/ha and 756 kg/ha superphosphate, applied as sodium di-hydrogen phosphate) on emergence and early seedling growth of Phalaris tuberosa. Water was made non-limiting as far as practicable. Seedling counts were made every four days until the first harvest, 32 days after sowing. Four fortnightly destructive harvests were made to examine treatment effects on post-emergence seedling growth. Seeding into the fine tilth at a depth of 1.25 cm on the high phosphorus treatment gave the fastest and highest total seedling emergence. Conditions most favourable to immediate post-emergence seedling growth were sowing into a fine seedbed at a depth of 1.25 cm or 2.5 cm in combination with phosphorus ; the rate of seedling growth increased with rate of phosphorus applied.


1985 ◽  
Vol 65 ◽  
Author(s):  
Harold Roper ◽  
Daksh Baweja ◽  
Graham A. Kirkby

ABSTRACTFactors affecting fly ash characteristics are examined by consideration of the various processes and constituents involved in its production. Coal conversion, boiler-furnace operations and collection procedures are discussed. Current classification schemes applied to fly ash, in particular to those for use as a pozzolanic mineral admixture in concrete are reviewed. The variability of the material is highlighted using physical and chemical data. Shape and size characteristics of selected fly ashes from sources within New South Wales, Australia are illustrated by electron micrographs. The influence of these properties on resultant concrete properties are briefly considered. The formation of nodules of fly ash material on the surface of fabric filters is chosen to illustrate the importance of physical and chemical conditions in the collection chamber, whereas pH changes with time of the water phase in contact with selected fly ashes demonstrate the importance of chemical characteristics of the collected materials. Such chemical characteristics may influence the path of pozzolanic reactions significantly.


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