|
The Diamantina River is a river in Central West Queensland and the far north of South Australia. The river was named by William Landsborough in 1866 for Lady Diamantina Bowen (née Roma), wife of Sir George Bowen, the first Governor of Queensland.〔(Diamantina History ) retrieved 7 May 2008〕 It has three major tributaries the Western River, Mayne River and Farrars Creek.〔(【引用サイトリンク】title=Flood Warning System For The Diamantina River )〕 ==Geography== Rising north-west of Longreach in the Swords Range, it flows in a south-westerly direction through central Queensland and the Channel Country to form the Warburton River at its confluence with the Georgina River.〔(Diamantina River, Diamantina Shire ), retrieved 7 May 2008〕〔(Encyclopædia Britannica online ) retrieved 7 May 2008〕 In extremely wet years, the Warburton River flows as far as Lake Eyre.〔(Floods of Lake Erie ), retrieved 7 May 2008〕 The length of the Diamantina River is approximately , and the basin is approximately 157,000 km2,〔(Australian Natural Resources Atlas ) retrieved 7 May 2008〕 of which most (140,000 km2) is used for agriculture. Most of the basin of the Diamantina is very flat—even the highest points in the northeast do not reach above sea level and Lake Eyre itself is below sea level. Apart from a few streams near Winton (the largest town in the basin) almost all rivers in the basin flow southwestwards towards Birdsville. The Diamantina River has no main channel, rather it is a series of wide relatively shallow channels.〔 The major feature of the river's sluggish course is Diamantina National Park about halfway between Winton and Birdsville. Apart from the national park, almost all land in the basin is used for grazing cattle and sheep, though numbers fluctuate greatly and considerable skill is required on the part of graziers. The variable drought and flood cycles of the area make the river ephemeral with many semi-permanent waterholes. The highest recorded flow rate of the river was at Birdsville in 1974 with per second was measured. The river's course direction west of Winton caught the attention of scientists at Geoscience Australia who noted the unusual hook-shaped route. Further research revealed the location is the site of a large asteroid impact which occurred around 300 million years ago. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Diamantina River」の詳細全文を読む スポンサード リンク
|