scholarly journals Long-Term Dataset of Tidal Residuals in New South Wales, Australia

Data ◽  
2021 ◽  
Vol 6 (10) ◽  
pp. 101
Author(s):  
Cristina N. A. Viola ◽  
Danielle C. Verdon-Kidd ◽  
David J. Hanslow ◽  
Sam Maddox ◽  
Hannah E. Power
Keyword(s):  
Water Level ◽  
Extreme Events ◽  
New South ◽  
New South Wales ◽  
Causal Processes ◽  
South Wales ◽  
Level Data ◽  
Water Level Data ◽  
Height Datum

Continuous water level records are required to detect long-term trends and analyse the climatological mechanisms responsible for extreme events. This paper compiles nine ocean water level records from gauges located along the New South Wales (NSW) coast of Australia. These gauges represent the longest and most complete records of hourly—and in five cases 15-min—water level data for this region. The datasets were adjusted to the vertical Australian Height Datum (AHD) and had the rainfall-related peaks removed from the records. The Unified Tidal Analysis and Prediction (Utide) model was subsequently used to predict tides for datasets with at least 25 years of records to obtain the associated tidal residuals. Finally, we provide a series of examples of how this dataset can be used to analyse trends in tidal anomalies as well as extreme events and their causal processes.

scholarly journals Wildfire extreme events: Large-scale developments in fire activity of New South Wales, Australia

2021 ◽  
Author(s):  
Michael Nolde ◽  
Norman Mueller ◽  
Günter Strunz ◽  
Florian Fichtner ◽  
Simon Plank ◽  
...  
Keyword(s):  
Extreme Events ◽  
Large Scale ◽  
New South ◽  
New South Wales ◽  
The United States ◽  
Burnt Area ◽  
South Wales ◽  
Fire Activity ◽  
In Fire

<p>Disastrous wildfires have occurred in many parts of the world during the last two years (2019 and 2020), most notably in South America, Australia, the United States, and regions north of the polar circle. Such extreme wildfire events pose a pervasive threat to human lives and property and have thus been widely recognized in the global media. This study focusses on large-scale developments in fire activity. It investigates the occurrence of burnt areas regarding several relevant parameters, namely fire extent, fire severity and fire seasonality. The entirety of those parameters allows an extensive insight regarding large-scale, long-term fire activity trends.</p><p>The burnt area derivation process, which is fully automated, is described in the literature (see reference below). The analysis is based on an extensive set of satellite data, specifically 9,612 granules of the MODIS MOD09/MYD09 product in conjunction with 3,503 tiles of the OLCI (Ocean and Land Colour Instrument) instrument onboard Sentinel-3.</p><p>The study design consists of two parts:</p><p>Firstly, the long-term temporal variability in fire activity, covering the time span from 2000 until 2020, is analyzed for the study region of New South Wales, Australia.</p><p>Secondly, the large-scale spatial variability is investigated by comparing the New South Wales extreme events in 2019/2020 with events of comparable magnitude in California, US and the Siberian taiga.</p><p>The study shows that New South Wales features an upward trend regarding the extent of yearly affected area, as well as a shift towards a prolongated end of the fire season towards the Autumn months. It also shows the exceptionality of the Australian wildfire activity in comparison with other geographical regions.</p><p> </p><p>Reference:</p><p>Nolde, Michael; Plank, Simon; Riedlinger, Torsten. "An Adaptive and Extensible System for Satellite-Based, Large Scale Burnt Area Monitoring in Near-Real Time." Remote Sensing 12.13 (2020): 2162.</p>

Prehistoric aboriginal occupation of the rangelands: Interpreting the surface archaeological record of far western New South Wales, Australia.

2000 ◽  
Vol 22 (1) ◽  
pp. 44 ◽  
Author(s):  
SJ Holdaway ◽  
PC Fanning ◽  
DC Witter
Keyword(s):  
Arid Regions ◽  
Aboriginal People ◽  
New South ◽  
New South Wales ◽  
Landscape Archaeology ◽  
South Wales ◽  
Large Numbers ◽  
Different Parts ◽  
Stone Artefact

Recent erosion in arid regions of western NSW has exposed large areas that are scattered with stone artefacts manufactured by Aboriginal people in prehistory. These exposures offer an opportunity for archaeologists to study the artefacts abandoned by Aboriginal people through time and to compare those artefacts that accumulate in different parts of the landscape. To reconstruct the nature of prehistoric behaviour in the rangelands, two approaches are needed. First, the geomorphological context of the artefacts needs to be considered since exposure of the artefacts is a function of landscape history. Second, large areas (measured in thousands of square metres) and large numbers of artefacts need to be considered if patterns reflecting long-term abandonment behaviour by Aboriginal people are to be identified. This paper reports on the Western New South Wales Archaeological Program (WNSWAP) which was initiated in 1995 to study surface archaeology in the rangelands. Geomorphological studies are combined with artefact analysis using geographic information system software to investigate Aboriginal stone artefact scatters and associated features such as heat retainer hearths, in a landscape context. Results suggest that apparently random scatters of stone artefacts are in fact patterned in ways which inform on prehistoric Aboriginal settlement of the rangelands. Key words: Aboriginal stone artefacts; rangelands; landscape archaeology; geomorphology; GIs

Criminal mobility of outlaw motorcycle gangs in Australia

2021 ◽  
Author(s):  
Christopher Dowling ◽  
Anthony Morgan
Keyword(s):  
East Coast ◽  
New South ◽  
New South Wales ◽  
Gang Members ◽  
Opportunity Structures ◽  
Significant Challenge ◽  
Outlaw Motorcycle Gangs ◽  
South Wales

The criminal mobility of outlaw motorcycle gang (OMCG) members presents a significant challenge to Australian governments and police. Examining patterns of mobility can help to better understand the opportunity structures that underpin offending by OMCGs and to drive national collaborative responses to these gangs. This study examines the prevalence and patterns of criminal mobility in a sample of almost 4,000 OMCG members in more than 400 chapters. Around one in 10 members showed evidence of criminal mobility over the long term, while more than one-third of chapters comprised criminally mobile members. Criminally mobile gang members were heavily concentrated in a small number of chapters. Patterns of criminal mobility primarily involve movements into east coast jurisdictions. New South Wales and Queensland emerged as the most common destinations for criminally mobile OMCG members.

‘A military fervour akin to religious fanaticism’: Scottish Military Identity in the Australian Imperial Force

2016 ◽  
Author(s):  
Craig Tibbitts
Keyword(s):  
New South ◽  
New South Wales ◽  
First World War ◽  
Small Degree ◽  
World War ◽  
Peak Period ◽  
South Wales ◽  
The First World War ◽  
First World

This chapter highlights the long-term influence of Scottish military traditions and identity in Australia, dating back to the arrival of a battalion of the 73rd Highland Regiment in New South Wales in 1810. From the 1860s, several home-grown ‘Scottish’ volunteer militia units were established in the Australian colonies. This coincided with a peak period of Scottish emigration to Australia with some 265,000 settling between 1850 and 1914. With the outbreak of the First World War, Australia quickly raised a contingent to assist the Empire. Several Scottish-Australian militia regiments sought incorporation into the Australian Imperial Force (AIF) but with limited success. This chapter highlights how the existence of Scottish military identities conflicted with the desire of the AIF that its identity be entirely Australian as means of forging the identity of the new Commonwealth of Australia. At the same time, a small number of AIF units managed to maintain some small degree of Scottish flavour about them. Those such as the 4th, 5th and 56th Battalions which had many join en- masse from the pre-war ‘Scottish’ militia regiments, provide examples of how this identity survived and was influenced by some key officers and NCOs of Scots heritage.

Long-term benefits of limestone applications to soil properties and to cereal crop yields in southern and central New South Wales

2003 ◽  
Vol 43 (1) ◽  
pp. 71 ◽  
Author(s):  
M. K. Conyers ◽  
C. L. Mullen ◽  
B. J. Scott ◽  
G. J. Poile ◽  
B. D. Braysher
Keyword(s):  
Grain Yield ◽  
New South ◽  
New South Wales ◽  
Commercial Application ◽  
South Wales ◽  
Cereal Grain ◽  
Subsurface Soil ◽  
Acid Tolerant ◽  
The Cost

The cost of buying, carting and spreading limestone, relative to the value of broadacre crops, makes investment in liming a questionable proposition for many farmers. The longer the beneficial effects of limestone persist, however, the more the investment in liming becomes economically favourable. We re-established previous lime trials with the aim of measuring the long-term effects of limestone on surface acidity (pH run-down), subsurface acidity (lime movement) and grain yield. The study made use of experiments where there was adequate early data on soil chemical properties and cereal yields. We report data from 6 trials located at 4 sites between Dubbo and Albury in New South Wales. The rate of surface soil (0–10 cm) pH decline after liming was proportional to the pH attained 1 year after liming. That is, the higher the pH achieved, the more rapid the rate of subsequent pH decline. Since yields (product removal) and nitrification (also acid producing) may both vary with pH, the post-liming pH acts as a surrogate for the productivity and acid-generating rate of the soil–plant system. The apparent lime loss rate of the surface soils ranged from the equivalent of nearly 500 kg limestone/ha.year at pH approaching 7, to almost zero at pH approaching 4. At commercial application rates of 2–2.5 t/ha, the movement of alkali below the layer of application was restricted. However, significant calcium (Ca) movement sometimes occurred to below 20 cm depth. At rates of limestone application exceeding the typical commercial rate of 2.5 t/ha, or at surface pH greater than about 5.5, alkali and Ca movement into acidic subsurface soil was clearly observed. It is therefore technically feasible to ameliorate subsurface soil acidity by applying heavy rates of limestone to the soil surface. However, the cost and risks of this option should be weighed against the use of acid-tolerant cultivars in combination with more moderate limestone rates worked into the surface soil.There was a positive residual benefit of limestone on cereal grain yield (either barley, wheat, triticale, or oats) at all sites in both the 1992 and 1993 seasons. While acid-tolerant cultivars were less lime responsive than acid-sensitive ones, the best yields were generally obtained using a combination of liming and acid-tolerant cultivars.The long-term residual benefits of limestone were shown to extend for beyond 8–12 years and indicate that liming should be profitable in the long term.

Vegetation changes after fire on two land systems in arid North-west New South Wales.

1985 ◽  
Vol 7 (2) ◽  
pp. 80 ◽  
Author(s):  
WE Mulham
Keyword(s):  
Arid Zone ◽  
New South ◽  
New South Wales ◽  
Summer Rainfall ◽  
Botanical Composition ◽  
Dune System ◽  
Erosion Risk ◽  
North West ◽  
South Wales

Following a sequence of favourable years in which pasture growth over much of the arid zone of Australia reached very high ievels, controlled burns were carried out on two contrasting vegetation types in the extreme north-west of New South Wales. A wheei-point apparatus was used to measure subse- quent changes in botanical composition and foliage cover over a four year period. On a pasture periodically dominated by Mitchell grass (Astrebla spp.) burning while growing conditions were favourable resulted in only a small long- term decrease in the cover of Mitchell grass. In the short-term all chenopod species were eliminated and a wider range and greater abundance of annual forbs were promoted in the following spring. On a similar area burned by wildfire in a year of low summer rainfall the response from Mitchell grass was much poorer and botanical composition of the pasture present in the following spring differed from that which developed in the spring following the controlled burn. It also differed from that of the unburnt pasture. The major differences were due to the response of forb species and are attributed to variation in seasonal rainfall. On a dune-system pasture the dominant grasses were species of Aristida and Enneapogon. These are relatively short-lived and appear to have little ability to regrow from the butt after fire. Their slow regeneration after the burn was reflected in the substantial increase in relative abundance of perennial forbs in the following autumn, and of annual forbs the next spring. Although fire appeared to have no long-term effect on the pasture it dramatically reduced tree and shrub numbers. It is suggested that during years in which abnormal quantities of Mitchell grass are present in this region, controlled burning could be a useful form of management. A mosaic of patches burnt at different times would reduce the potential for wide-scale wildfires, provide refuge areas for stock and wildlife in the event of wildfire, and promote a wider choice of plant material for grazing animals. However, in dune-systems vegetation, removal of the pasture cover and reduction of the tree and shrub density would constitute an erosion risk.

LICENSED KANGAROO SHOOTING IN NEW SOUTH WALES: THE PEOPLE, THE MONEY THEY MAKE AND THE ANIMALS THEY SHOOT

1986 ◽  
Vol 8 (1) ◽  
pp. 36
Author(s):  
M.D Young ◽  
R.J Delforce
Keyword(s):  
National Parks ◽  
New South ◽  
New South Wales ◽  
Economic Benefits ◽  
Social Characteristics ◽  
South Wales ◽  
The People ◽  
New Directions ◽  
Term Benefit

Sixty licensed kangaroo shooters were interviewed in New South Wales to determine their social characteristics, incomes and shooting preferences. Two groups of shooters were identified: those who take kangaroos only for immediate, maximum short term economic gain and those who attempt to husband local kangaroo populations to their long term benefit. Amongst the latter group there is both a lack of agreement and a general uncertainty about the optimal shooting strategy to achieve the long term economic benefits they desire. New directions in research and extension are suggested with a view to rectifying this dilemma. Data on the strategies used to take kangaroos for commercial purposes and the accuracy of certam information reported to the National Parks and Wildlife Service are also described.

Sustainable grazing systems for the Central Tablelands of New South Wales. 5. A bioeconomic framework for assessing the long-term economic benefits of grazing management tactics and implications for sustainability

2006 ◽  
Vol 46 (4) ◽  
pp. 495 ◽  
Author(s):  
R. E. Jones ◽  
P. M. Dowling ◽  
D. L. Michalk ◽  
W. McG. King
Keyword(s):  
Programming Model ◽  
New South ◽  
New South Wales ◽  
Economic Benefits ◽  
Grazing Management ◽  
South Wales ◽  
Grazing Systems ◽  
Sustainable Grazing ◽  
Management Tactics

There have been significant declines in the perennial grass (PG) content in native and sown pastures across temperate Australia. Not only has this reduced agricultural productivity, it has contributed to more serious degradation, such as loss of soil and biodiversity, decreasing water quality, and dryland salinity caused by rising watertables. Results from the Sustainable Grazing Systems Key Program (SGS) research undertaken at Carcoar on the Central Tablelands of New South Wales were reported by Michalk et al. (2003). This research indicated that grazing management tactics can be used to manipulate pasture composition, thereby changing animal production and water-use patterns. The main grazing tactic investigated was termed a summer grazing rest, where resting was imposed in late spring if PG composition was <50%. Reported in this present paper is an economic framework for valuing the long-term benefits of grazing management tactics. The framework involves the development of a bioeconomic modelling system that links a dynamic programming model with biophysical models for water and environmental processes, soil fertility, pasture growth, livestock energy requirements and the change in pasture species composition. The study concludes that long-term economic returns are improved by strategies, e.g. a summer rest, that lead to an increase in PG composition over time. The study also determined that environmental factors, such as deep drainage, runoff and soil loss, are reduced as perenniality is increased.

scholarly journals WildCountry

2002 ◽  
Vol 8 (4) ◽  
pp. 221 ◽  
Author(s):  
Harry F. Recher
Keyword(s):  
Nature Conservation ◽  
National Parks ◽  
National Park ◽  
Nature Reserve ◽  
New South ◽  
New South Wales ◽  
Term Survival ◽  
South Wales ◽  
Reserve System

REGARDLESS of the merits and values of individual national parks and nature reserves, Australia's conservation reserves do not ensure the survival of the continent's biota. There are many reasons for this. Reserves, even the largest, are too small and vulnerable to broad area disturbance. Consider that, in January 2003, fires burnt more than two-thirds of Kosciuszko National Park, which at 690 000 ha is the largest park in New South Wales and one of the largest in Australia. This shows how even the largest conservation reserves are at risk of catastrophic disturbance. The much smaller Nadgee Nature Reserve (21 000 ha) in southeastern New South Wales has burnt almost in its entirety twice in the 35 years I have worked there. The Nadgee fires and those in Kosciuszko were started by lightning and were the result of prolonged drought, events common across the continent. When small size is coupled with isolation, the long-term survival of populations and the exchange of propagules within the reserve system becomes problematical. Small size and isolation do not leave much scope for plants and animals to adapt to long-term climate change, either through dispersal or by evolution. Even reserving 10 or 15% of land for nature conservation, as recommended by some international conservation agencies, will be inadequate; a target of 30% would have better ecological credentials, but even this could prove inadequate unless the nature conservation reserve system was designed to allow for long-term evolutionary change, which it is not (see Archer 2002; Recher 2002a,b).

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