Huge Rainfall on Groundawter Quality in Arid Zone

暴雨对干旱区地下水质量的影响

• 批准号: 08041189
• 负责人: SHINDO Shizuo
• 金额: --
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for International Scientific Research.
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08041189/
• 关键词: United Arab Emirates; Arid area; Groundwater recharge mechanism; Huge rainfall; Change in groundwater quality; Sediments of wadi; Soil moistver caracteristics of sand dune

Clarification of groundwater recharge mechanism in arid area, where annual precipitation is much less than potential evaporation, is very important both for hydrological science and regional groundwater development.In order to clarify above mentioned object, the investigation was taken from February to March in last year. More than 200 groundwater samples have been taken around the whole U.A.E.Althogh It was found that water quality evolution processes respond to regional groundwater movement very well but understanding of groundwater recharge mechanism quantitatively was left pending as the future study.After mentioned research period, from March 10, to March 15, an unusual rainfall occered in whole U.A.E and it was expected that the chemical composition of groundwater was changed in such a case by the large volume of groundwater recharge.Groundwater sampling from the same wells of last year's survey was carried out from March I,to March 30,1997.Although all data and samples are not yet analyzed, the expected results are achieved.

为了弄清年降水量远小于潜在蒸发量的干旱区地下水的补给机制，对水文科学和区域地下水开发利用都具有重要意义。在整个阿联酋采集了200多个地下水样品，Althogh发现，水质演化过程对区域地下水运动有很好的响应，但定量地了解地下水补给机制有待于进一步研究。整个阿联酋出现了一场不寻常的降雨，预计在这种情况下，地下水的化学成分会因大量的地下水补给而发生变化。从3月1日起，从去年调查的同一威尔斯井中进行了地下水取样，虽然尚未对所有数据和样本进行分析，但达到了预期的效果。