The groundwater quality in rainy period of 2005 and in drought period of 2006 was evaluated using synthetic evaluation method.

本文采用应用最广泛的综合评价方法，对研究区2005年丰水期和2006年枯水期地下水水质进行现状评价。

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Based on the recognition of hydrological drought and the runoff forecasting during the drought period, a forecasting model of hydrological drought is established.

通过水文干旱识别和枯水期径流量预估，建立了供水系统水文干旱的预测模型。

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The joint regulation of increasing discharge from Danjiangkou Reservoir and decreasing discharge from Sanxia Power Station during drought period will reduce the probability of Hanjiang's water bloom.

丹江口水库增加枯水期下泄流量和三峡电站减少枯水期下泄流量的联合调度将减小汉江水华发生的概率。

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They perform the Yaokwa ritual every year during the drought period to honour the Yakairiti spirits, thereby ensuring cosmic and social order for the different clans.

UNESCO: Intangible Cultural Heritage

This shrinkage coincides with a period of prolonged drought in eastern Africa, and was probably caused by it.

ECONOMIST: Human evolution: Before the exodus | The

Using it, he has built up a series of tree-ring chronologies from Thailand and Vietnam that indicate a period of severe drought across mainland South-East Asia in the early 1400s.

ECONOMIST: Tree rings are laying bare the climatic history of Asia