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Arrowsmith River
The Arrowsmith River lies within the Mid West region of Western Australia. The explorer George Grey found the river on 11 April 1839, on his second expedition along the west coast. He named it after the distinguished English cartographer John Arrowsmith. The river commences just south of Arrino and north-west of Three Springs near the Midlands Road and flows in a westerly direction for a length of to the coast and terminates in Arrowsmith Lake, inland from Cliff Head. The river drops a total of in elevation over the course of its length. Flooding in surrounding areas occurred in 1932 following a torrential downpour that caused the river and surrounding creeks to rise and flood a few hours later. The salinity levels in the river are often higher than 1000 mg/L due to brackish Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arrino, Western Australia
Arrino is a small town in the Mid West region of Western Australia. The town is located between Mingenew and Three Springs on the Midlands Road. The name of the town is Aboriginal in origin; it is the name of the local springs, thought to mean "place of many granite hills". The name first appeared in charts in 1859 and was also the name of a property established by an early settler, NW Cooke, in 1876. The townsite was gazetted in 1904. Plans for a school and quarters to be built were drawn up in 1905 with an estimated cost of £325. Flooding occurred at Arrino in 1932 following a torrential downpour that caused the Arrowsmith River and surrounding creeks to rise and flood a few hours later. A section of the railway between Arrino and Three Springs was washed away as a result, closing the line for several days. Later the same year massive bushfires swept across the surrounding areas destroying crops and bushland; about of countryside were burnt out. More fires were started ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mid West (Western Australia)
The Mid West region is one of the nine regions of Western Australia. It is a sparsely populated region extending from the west coast of Western Australia, about north and south of its administrative centre of Geraldton, Western Australia, Geraldton and inland to east of Wiluna, Western Australia, Wiluna in the Gibson Desert. It has a total area of , and a permanent population of about 52,000 people, more than half of those in Geraldton. Earlier names The western portion of this region was known earlier as "The Murchison" based on the Murchison River (Western Australia), river of the same name, and the similarly named Goldfield. Economy The Mid West region has a diversified economy that varies with the geography and climate. Near the coast, annual rainfall of between allows intensive agriculture. Further inland, annual rainfall decreases to less than , and here the economy is dominated by mining of iron ore, gold, nickel and other mineral resources. Geraldton is an imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Australia is Australia's largest state, with a total land area of . It is the second-largest country subdivision in the world, surpassed only by Russia's Sakha Republic. the state has 2.76 million inhabitants percent of the national total. The vast majority (92 percent) live in the south-west corner; 79 percent of the population lives in the Perth area, leaving the remainder of the state sparsely populated. The first Europeans to visit Western Australia belonged to the Dutch Dirk Hartog expedition, who visited the Western Australian coast in 1616. The first permanent European colony of Western Australia occurred following the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Grey
Sir George Grey, KCB (14 April 1812 – 19 September 1898) was a British soldier, explorer, colonial administrator and writer. He served in a succession of governing positions: Governor of South Australia, twice Governor of New Zealand, Governor of Cape Colony, and the 11th premier of New Zealand. He played a key role in the colonisation of New Zealand, and both the purchase and annexation Annexation (Latin ''ad'', to, and ''nexus'', joining), in international law, is the forcible acquisition of one state's territory by another state, usually following military occupation of the territory. It is generally held to be an illegal act ... of Māori land. Grey was born in Lisbon, Portugal, just a few days after his father, Lieutenant-Colonel George Grey was killed at the Siege of Badajoz (1812), Battle of Badajoz in Spain. He was educated in England. After military service (1829–37) and two explorations in Western Australia (1837–39), Grey became Governor of History o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartographer
Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an imagined reality) can be modeled in ways that communicate spatial information effectively. The fundamental objectives of traditional cartography are to: * Set the map's agenda and select traits of the object to be mapped. This is the concern of map editing. Traits may be physical, such as roads or land masses, or may be abstract, such as Toponomy, toponyms or political boundaries. * Represent the terrain of the mapped object on flat media. This is the concern of map projections. * Eliminate characteristics of the mapped object that are not relevant to the map's purpose. This is the concern of Cartographic generalization, generalization. * Reduce the complexity of the characteristics that will be mapped. This is also the concern of generaliza ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Arrowsmith (cartographer)
John Arrowsmith (1790–1873) was an English cartographer. He was born at Winston, County Durham, England. He was the nephew of Aaron Arrowsmith, another English cartographer. In 1810 he joined his uncle in the cartography business. They built on Aaron's ''A map exhibiting all the new discoveries in the interior parts of North America'' 1811 version which was heavily based on information provided by the Hudson's Bay Company, Indian maps, and British Navy sea charts to produce and publish an updated map: ''North America'' in 1821. Their contributions to Canadian cartography led to Mount Arrowsmith, situated east of Port Alberni on Vancouver Island, British Columbia, being named for them. Aaron's sons Aaron Jr. and Samuel were substantially younger than John but inherited their father's business when they were young men (21 and 18 respectively) when Aaron Sr. died in 1823. John took the £200 left to him by his uncle and began working on his own. Aaron Jr and Samuel did not have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three Springs, Western Australia
Three Springs is a town located north of Perth, Western Australia on the Midlands Road, which until the opening of the Brand Highway in 1975 was the main road route from Perth to the state's north. The town is the seat of the Shire of Three Springs. Its economy is based on agriculture (mainly broad acre grain cropping and sheep farming) and mining. History The first Europeans to pass near the Three Springs area were government Assistant Surveyor Augustus Charles Gregory and Francis Thomas Gregory (both attached to the department of the Surveyor-General) and their brother Henry Churchman Gregory, on a public-private funded expedition to search for new agricultural land beyond the settled areas. On 14 September 1846 they camped at Eneabba Springs, southwest of Three Springs, while returning to Perth from the Irwin River. In 1867, government Assistant Surveyor Charles Cooke Hunt, while undertaking a road survey recorded the words "Three Springs" at the site of the current town af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood
A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise. In particular climate change's increased rainfall and extreme weather events increases the severity of other causes for flooding, resulting in more intense floods and increased flood risk. Flooding may occur as an overflow of water from water bodies, such as a river, lake, or ocean, in which the water overtops or breaks levees, resulting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The West Australian
''The West Australian'' is the only locally edited daily newspaper published in Perth, Western Australia. It is owned by Seven West Media (SWM), as is the state's other major newspaper, ''The Sunday Times''. It is the second-oldest continuously produced newspaper in Australia, having been published since 1833. It tends to have conservative leanings, and has mostly supported the Liberal–National Party Coalition. It has Australia's largest share of market penetration (84% of WA) of any newspaper in the country. Content ''The West Australian'' publishes international, national and local news. , newsgathering was integrated with the TV news and current-affairs operations of ''Seven News'', Perth, which moved its news staff to the paper's Osborne Park premises. SWM also publish two websites from Osborne Park including thewest.com.au and PerthNow. The daily newspaper includes lift-outs including Play Magazine, The Guide, West Weekend, and Body and Soul. Thewest.com.au is the on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salinity
Salinity () is the saltiness or amount of salt dissolved in a body of water, called saline water (see also soil salinity). It is usually measured in g/L or g/kg (grams of salt per liter/kilogram of water; the latter is dimensionless and equal to ‰). Salinity is an important factor in determining many aspects of the chemistry of natural waters and of biological processes within it, and is a thermodynamic state variable that, along with temperature and pressure, governs physical characteristics like the density and heat capacity of the water. A contour line of constant salinity is called an ''isohaline'', or sometimes ''isohale''. Definitions Salinity in rivers, lakes, and the ocean is conceptually simple, but technically challenging to define and measure precisely. Conceptually the salinity is the quantity of dissolved salt content of the water. Salts are compounds like sodium chloride, magnesium sulfate, potassium nitrate, and sodium bicarbonate which dissolve into ions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackish
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root '' brak''. Certain human activities can produce brackish water, in particular civil engineering projects such as dikes and the flooding of coastal marshland to produce brackish water pools for freshwater prawn farming. Brackish water is also the primary waste product of the salinity gradient power process. Because brackish water is hostile to the growth of most terrestrial plant species, without appropriate management it is damaging to the environment (see article on shrimp farms). Technically, brackish water contains between 0.5 and 30 grams of salt per litre—more often expressed as 0.5 to 30 parts per thousand (‰), which is a specific grav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
