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Mount Gabi
Mount Gabi is an underwater mountain, similar to a guyot, that was discovered in 2006, off the coast of Augusta near the south-western tip of Western Australia. It lies a similar distance west of Windy Harbour It lies at a depth of , rising from the sea floor and is wide. Mount Gabi was discovered by Cameron Buchanan, a multibeam sonar specialist from Geoscience Australia, the Australian national agency for geoscience research, via swath mapper during investigations of continental shelf processes between the Great Australian Bight and Cape Leeuwin Cape Leeuwin is the most south-westerly (but not most southerly) mainland point of the Australian continent, in the state of Western Australia. Description A few small islands and rocks, the St Alouarn Islands, extend further in Flinders Ba .... References External links Geoscience Australia South coast of Western Australia {{WesternAustralia-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are Monadnock, isolated summits, but most occur in mountain ranges. Mountain formation, Mountains are formed through Tectonic plate, tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through Slump (geology), slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce Alpine climate, colder climates than at sea level at similar latitude. These colder climates strongly affect the Montane ecosystems, ecosys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guyot
In marine geology, a guyot (pronounced ), also known as a tablemount, is an isolated underwater volcanic mountain ( seamount) with a flat top more than below the surface of the sea. The diameters of these flat summits can exceed .Guyot ''Encyclopædia Britannica Online'', 2010. Retrieved January 14, 2010. Guyots are most commonly found in the , but they have been identified in all the oceans except the . History Guyots were first recognized in 1945 by H ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Augusta, Western Australia
Augusta is a town on the south-west coast of Western Australia, where the Blackwood River emerges into Flinders Bay. It is the nearest town to Cape Leeuwin, on the furthest southwest corner of the Australian continent. In the it had a population of 1,091; by 2016 the population of the town was 1,109 (excluding East Augusta). The town is within the Shire of Augusta-Margaret River local government area, and is in the Leeuwin Ward. It is connected by public transport to Perth via Transwa coach service SW1. Augusta was a summer holiday town for many during most of the twentieth century, but late in the 1990s many people chose to retire to the region for its cooler weather. As a consequence of this and rising land values in the Augusta-Margaret River area, the region has experienced significant social change. History Noongar peoples, the Aboriginal Australian peoples of south-western Australia, inhabited the area for an estimated 45,000 years before the arrival of European sett ... [...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] |
Windy Harbour, Western Australia
Windy Harbour is a holiday settlement surrounded by D’Entrecasteaux National Park. It is located 27 km south of Northcliffe, on the south coast of Western Australia east of Augusta and west of Nornalup. It lies just east of Point D'Entrecasteaux. Fishing, snorkelling and whale watching are the major attractions of Windy Harbour. Coastal zone The area of Windy Harbour coastal zone was studied before it became part of the national park. Settlement The history of the settlement is tied in with the forestry communities inland from the harbour and the rock lobster fishing industry. The area was also the location of coastal fishing huts, which have been at times removed due to their not being approved by local authorities. See also * Sandy Island (Windy Harbour) * Quagering Island * Mount Chudalup * The Cow and The Calf The Cow and The Calf are basalt rock formations off the south coast of Western Australia. They are 26 km south east of Windy Harbour and can be s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multibeam Echosounder
A multibeam echosounder (MBES) is a type of sonar that is used to map the seabed. It emits acoustic waves in a fan shape beneath its transceiver. The time it takes for the sound waves to reflect off the seabed and return to the receiver is used to calculate the water depth. Unlike other sonars and echo sounders, MBES uses beamforming to extract directional information from the returning soundwaves, producing a swath of depth soundings from a single ping. History and progression Multibeam sonar sounding systems, also known as ''swathe'' (British English) or ''swath'' (American English), originated for military applications. The Sonar Array Sounding System (SASS) was developed in the early 1960s by the US Navy, in conjunction with General Instrument to map large swaths of the ocean floor to assist the underwater navigation of its submarine force. SASS was tested aboard the USS ''Compass Island'' (AG-153). The final array system, composed of sixty-one one degree beams with a swa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Australian Bight
The Great Australian Bight is a large oceanic bight, or open bay, off the central and western portions of the southern coastline of mainland Australia. Extent Two definitions of the extent are in use – one used by the International Hydrographic Organization (IHO) and the other used by the Australian Hydrographic Service (AHS). The IHO defines the Great Australian Bight as having the following limits: ''On the North.'' The south coast of the Australian mainland. ''On the South.'' A line joining West Cape Howe () Australia to South West Cape, Tasmania. ''On the East.'' A line from Cape Otway, Victoria to King Island and thence to Cape Grim, the northwest extreme of Tasmania. The AHS defines the bight with a smaller area, from Cape Pasley, Western Australia, to Cape Carnot, South Australia - a distance of . Much of the bight lies due south of the expansive Nullarbor Plain, which straddles South Australia and Western Australia. The Eyre Highway passes close to the cli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Leeuwin
Cape Leeuwin is the most south-westerly (but not most southerly) mainland point of the Australian continent, in the state of Western Australia. Description A few small islands and rocks, the St Alouarn Islands, extend further in Flinders Bay to the east of the cape. The nearest settlement, north of the cape, is Augusta. South-east of Cape Leeuwin, the coast of Western Australia extends much further south. Cape Leeuwin is not the southernmost point of Western Australia, with that distinction belonging to West Cape Howe, which is to the southeast, near Albany. In Australia, the cape is considered where the Indian Ocean meets the Southern Ocean, but most other nations and bodies consider that the Southern Ocean exists only south of 60°S. Located on headland of the cape is the Cape Leeuwin Lighthouse and the buildings that were used by the lighthouse-keepers. Cape Leeuwin is considered one of the three "great capes" of the world. Use of name Cape Leeuwin is often group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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