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Cloud Vortex Near Adelaide, Australia

34.9S 138.5E

March 21st, 2013 Category: Clouds

Australia – March 21st, 2013

A large cloud vortex swirls off the coast of South Australia, near Adelaide. Visible north of the vortex center are the Gulf of Spencer (larger, west) and the Gulf of St. Vincent (smaller, east). Such vortices can form for a variety of reasons, including upper air circulation effects, mechanical effects induced by nearby mountains, surface heating from the ocean, and association with a cold front.

The Yorke Peninsula Near Adelaide, Australia, and Nearby Lakes

35S 137.2E

April 14th, 2010 Category: Lakes

Australia - March 5th, 2010

Australia - March 5th, 2010

The Yorke Peninsula is a peninsula located north-west and west of Adelaide in South Australia, Australia, between Spencer Gulf on the west and Gulf St Vincent on the east. The peninsula is separated from Kangaroo Island to the southeast by Investigator Strait.

Principal towns include the Copper Triangle towns of Kadina, Moonta and Wallaroo; farming centres of Maitland, Minlaton and Yorketown; and the port of Ardrossan. A number of smaller coastal towns are popular destinations for fishing and holidays, particularly from Adelaide. The south-western tip is occupied by Innes National Park.d

Two lakes can also be seen near the peninsula: the green lake east of Kangaroo Island, near the shoreline, is Lake Alexandrina, and the bright white patch in the upper left quadrant is the saline, endorheic Lake Gairdner.

Kangaroo Island, Australia

May 3rd, 2009 Category: Lakes, Snapshots

Australia - April 14th, 2009

Australia - April 14th, 2009

Kangaroo Island, bottom left, is Australia’s third largest island – after Tasmania and Melville Island.

Kangaroo Island is located at the entrance to Gulf Saint Vincent. At its closest point to the mainland, it is 13 kilometres (8 mi) offshore from Cape Jervis, on the tip of the Fleurieu Peninsula (just below center) in the state of South Australia.

The island is 112 kilometres southwest of Adelaide, visible as a greenish-grey area on the east coast of Gulf Saint Vincent. The bright green lake further east is Lake Alexandrina.

Kangaroo Island is separated from Yorke Peninsula (left) to the northwest by Investigator Strait and from Cape Jervis to the northeast by the Backstairs Passage.

The island is 150 km (93 mi) long and between 900 m (980 yd) and 57 km (35 mi) wide, its area covering 4,405 km2 (1,701 sq mi). Its coastline is 540 km long and highest altitude is 307 m (1,010 ft).

Arid Landscape of South Australia

April 3rd, 2009 Category: Snapshots

Australia - March 13th, 2009

Australia - March 13th, 2009

South Australia is a state of Australia in the southern central part of the country, covering some of the most arid parts of the continent. With a total land area of 983,482 square kilometres (379,725 sq mi), it is the fourth largest of Australia’s six states and two territories.

It is bordered to the west by Western Australia, to the north by the Northern Territory and Queensland, to the east by Queensland, New South Wales and Victoria, and along the south by the Great Australian Bight and the Southern Ocean.

With nearly 1.6 million people, the state comprises less than 10% of the Australian population and ranks fifth in population among the states and territories.

The majority of its people reside in the state capital, Adelaide, visible here northwest of the green lake by the coast. Most of the remainder are settled in fertile areas along the south-eastern coast and River Murray.

The terrain consists largely of arid and semi-arid rangelands, evident from the red and orange tones of he landscape.

There are also several low mountain ranges in which the most important mountains are the Mt Lofty-Flinders Ranges system which extends north about 800 kilometres (497 mi) from Cape Jervis to the northern end of Lake Torrens and salt lakes, several of which can be seen in the upper half of the image.

The highest point in the state is not in those ranges, but Mount Woodroffe at 1,435 metres (4,708 ft) in the Musgrave Ranges in the extreme northwest of the state. The western portion of the state consists of the sparsely-inhabited Nullarbor Plain fronting the cliffs of the Great Australian Bight.

Lake Alexandrina and Adelaide, Australia – March 24th, 2009

March 24th, 2009 Category: Image of the day, Lakes

Lake Alexandrina and Adelaide, Australia - March 20th, 2009

Lake Alexandrina and Adelaide, Australia - March 20th, 2009

Lake Alexandrina is a lake in the state of South Australia, Australia, adjacent to the coast of the Southern Ocean, about 100 kilometres south-east of Adelaide (visible as a light grey area on the coast). Easily identifiable from its bright green color, the lake is north of Encounter Bay and east of Fleurieu Peninsula.

The major river flowing into Lake Alexandrina is the Murray River; others include the Bremer, Angas, and Finniss Rivers, all from the eastern side of the southern Mount Lofty Ranges. A narrow channel connects Lake Alexandrina to the smaller Lake Albert to the south-east.

Lake Alexandrina, which is shallow and contains a number of islands near the southern end, empties into the sea near Goolwa (the channel is known as the Murray Mouth). However, when the river flow is low the entrance is often blocked by a sand-bar.

Originally subjected to tidal and storm inflows of seawater the lake is now maintained as fresh water by a series of barrages across the islands near the Murray Mouth. This has produced an annual requirement for more than 1 million megalitres of fresh water to replace losses from evaporation that once came from sea water.

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