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2011 Tuvalu drought
(詳細はdrought afflicting Tuvalu, a South Pacific island country of approximately 10,500 people, in the latter half of 2011. A state of emergency was declared on September 28, 2011; with rationing of available fresh-water.
The La Niña event that caused the drought ended in April–May 2012. By August 2012 the El Niño-Southern Oscillation (ENSO) Conditions indicated that the tropical Pacific Ocean was on the brink of an El Niño event.
==Background==
Tuvalu experiences the effects of El Niño & La Niña that flow from changes in ocean temperatures in equatorial and central Pacific. El Niño effects increase the chances of tropical cyclones; while La Niña effects increase the chances of drought conditions in Tuvalu.〔(【引用サイトリンク】title=El Niño and La Niña )〕
Tuvalu relies primarily on rainfall for the majority of its drinking water, which is collected and stored in storage tanks.〔〔P A Kingston, 2004. (Surveillance of Drinking Water Quality in the Pacific Islands: Situation Analysis And Needs Assessment, Country Reports ). WHO, Retrieved 25 Mar. 2010〕 The country normally receives between 200–400 mm (7.87–15.75 in) of rain per month during an average year.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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