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Little Para River
The Little Para River is a seasonal creek running across the Adelaide Plains in the Australian state of South Australia, whose catchment fills reservoirs that supply some of the water needs of Adelaide’s northern suburbs. Course and features It runs from its source near Lower Hermitage in the Mount Lofty Ranges, flows north westerly to the Little Para Reservoir and then westerly to the Barker Inlet via Swan Creek and into Gulf St Vincent at Globe Derby Park . The lower portion of the river is badly affected by human activity and stormwater runoff but the upper reaches have a good range of biodiversity. The river descends over its course. As the river flows down from the Adelaide Hills over the Para fault escarpment, it has formed a large alluvial fan on which Salisbury is built. The river is narrow and winding, formerly flooded in heavy rain and rarely reaches its sea outlet. Over time the river has been widened and levees added to reduce this flooding. In the 19th centu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaurna Language
Kaurna ( or ) is a Pama-Nyungan language historically spoken by the Kaurna peoples of the Adelaide Plains of South Australia. The Kaurna peoples are made up of various tribal clan groups, each with their own ''parnkarra'' district of land and local dialect. These dialects were historically spoken in the area bounded by Crystal Brook and Clare in the north, Cape Jervis in the south, and just over the Mount Lofty Ranges. Kaurna ceased to be spoken on an everyday basis in the 19th century and the last known native speaker, Ivaritji, died in 1929. Language revival efforts began in the 1980s, with the language now frequently used for ceremonial purposes, such as dual naming and welcome to country ceremonies. Classification R. M. W. Dixon (2002) classified Kaurna as a dialect of the Kadli language, along with Ngadjuri, Narungga, and Nukunu, and "Nantuwara", with ''kadli'' meaning "dog" in these varieties. However this name has not gained wide acceptance and is not recorded as a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Para River
The South Para River is a river located in the Mount Lofty Ranges northeast of Adelaide in the Australian state of South Australia. The river's name is based directly on the Kaurna word ''pari'' which means river. The "south" descriptor distinguishes it from the North Para River with which it merges. Course and features The South Para River rises in the Mount Lofty Ranges near Mount Crawford and Kersbrook and flows northwest through the Mount Lofty Ranges, passing through the Warren Reservoir and the South Para Reservoir, before reaching its confluence with the North Para River in Gawler to form the Gawler River. The South Para River descends over its course. The South Para River catchment is one of the key watersheds in the northern Mount Lofty Ranges. It plays an important role in the functioning of South Australia, providing much of the water used by Adelaide's domestic supply in the Northern Adelaide area. The rainfall in the South Para River catchment varies from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Para River
The North Para River is a river located in the Barossa Valley of the Australian state of South Australia. The river's name is based directly on the Kaurna word ''pari'' which means river. The "north" descriptor distinguishes it from the South Para River with which it merges. Course and features The North Para River rises in the Barossa Ranges near Eden Valley and follows a meandering path through the Barossa Valley, firstly north to the east of Angaston, then arcs around to the southwest to pass through the towns of Nuriootpa and Tanunda, before merging with the South Para River in Gawler forming the Gawler River. The river descends over its course. The North Para River catchment is one of the key watersheds in the northern Mount Lofty Ranges. It plays a very important role in the economy of South Australia, providing much of the water used by viticulture in the Barossa Valley. Its waters are also used for livestock production, cereal cropping and recreation. See a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Water
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, permafro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Murray
The Murray River (in South Australia: River Murray) (Ngarrindjeri: ''Millewa'', Yorta Yorta: ''Tongala'') is a river in Southeastern Australia. It is Australia's longest river at extent. Its tributaries include five of the next six longest rivers of Australia (the Murrumbidgee, Darling, Lachlan, Warrego and Paroo Rivers). Together with that of the Murray, the catchments of these rivers form the Murray–Darling basin, which covers about one-seventh the area of Australia. It is widely considered Australia's most important irrigated region. The Murray rises in the Australian Alps, draining the western side of Australia's highest mountains, then meanders northwest across Australia's inland plains, forming the border between the states of New South Wales and Victoria as it flows into South Australia. From an east–west direction it turns south at Morgan for its final , reaching the eastern edge of Lake Alexandrina, which fluctuates in salinity. The water then flows thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply
Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. These systems are what supply drinking water to populations around the globe. Aspects of service quality include continuity of supply, water quality and water pressure. The institutional responsibility for water supply is arranged differently in different countries and regions (urban versus rural). It usually includes issues surrounding policy and regulation, service provision and standardization. The cost of supplying water consists, to a very large extent, of fixed costs (capital costs and personnel costs) and only to a small extent of variable costs that depend on the amount of water consumed (mainly energy and chemicals). Almost all service providers in the world charge tariffs to recover part of their costs. Water supply is a separate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Levee
A levee (), dike (American English), dyke (English in the Commonwealth of Nations, Commonwealth English), embankment, floodbank, or stop bank is a structure that is usually soil, earthen and that often runs parallel (geometry), parallel to the course of a river in its floodplain or along low-lying coastlines. The purpose of a levee is to keep the course of rivers from changing and to protect against flooding of the area adjoining the river or coast. Levees can be naturally occurring ridge structures that form next to the bank of a river, or be an artificially constructed fill dirt, fill or wall that regulates water levels. Ancient civilizations in the Indus Valley civilisation, Indus Valley, ancient Egypt, Mesopotamia and China all built levees. Today, levees can be found around the world, and failures of levees due to erosion or other causes can be major disasters. Etymology Speakers of American English (notably in the Midwestern United States, Midwest and Deep South) u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alluvial Fan
An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but are also found in more humid environments subject to intense rainfall and in areas of modern glaciation. They range in area from less than to almost . Alluvial fans typically form where flow emerges from a confined channel and is free to spread out and infiltrate the surface. This reduces the carrying capacity of the flow and results in deposition of sediments. The flow can take the form of infrequent debris flows or one or more ephemeral or perennial streams. Alluvial fans are common in the geologic record, such as in the Triassic basins of eastern North America and the New Red Sandstone of south Devon. Such fan deposits likely contain the largest accumulations of gravel in the geologic record. Alluvial fans have also been found on Mars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escarpment
An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations. The terms ''scarp'' and ''scarp face'' are often used interchangeably with ''escarpment''. Some sources differentiate the two terms, with ''escarpment'' referring to the margin between two landforms, and ''scarp'' referring to a cliff or a steep slope. In this usage an escarpment is a ridge which has a gentle slope on one side and a steep scarp on the other side. More loosely, the term ''scarp'' also describes a zone between a coastal lowland and a continental plateau which shows a marked, abrupt change in elevation caused by coastal erosion at the base of the plateau. Formation and description Scarps are generally formed by one of two processes: either by differential erosion of sedimentary rocks, or by movement of the Earth's crust at a geologic fault. The first process is the more common type: the escarpment is a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geologic Fault
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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