Multiple‐indicator study of the response of groundwater recharge sources to highly turbid river water after a landslide in the Tedori River alluvial fan, Japan,Hydrological Processes

当前位置： X-MOL 学术 › Hydrol. Process. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Multiple‐indicator study of the response of groundwater recharge sources to highly turbid river water after a landslide in the Tedori River alluvial fan, Japan
Hydrological Processes ( IF 2.8 ) Pub Date : 2020-06-22 , DOI: 10.1002/hyp.13796
Yumi Yoshioka ₁ , Kimihito Nakamura ₂ , Hiroshi Takimoto ₃ , Shinji Sakurai ₄ , Takao Nakagiri ₄ , Haruhiko Horino ₄ , Takeo Tsuchihara ₅

Affiliation

The large volume of groundwater stored in the Tedori River alluvial fan, Ishikawa Prefecture, Japan, is an important source of local drinking and industrial water. The Tedori River was observed to be highly turbid from the beginning of May 2015 to at least November 2017 due to a landslide in the upper reach of the river. After the landslide, the groundwater level was drawn down by several to 10 m near the middle river section during paddy irrigation periods in 2015 and 2016. This study addresses the impacts of the highly turbid water on groundwater recharge from the river and paddy fields. In 2016, we sampled groundwater, river water, paddy irrigation water, paddy ponding water, and precipitation five times at 2‐month intervals. We analysed the H, O, and Sr stable isotopic compositions and major dissolved ion (and Sr) concentrations and compared our data to previous data obtained in June 2011. Ca, Sr, Cl, SO₄, and TN concentrations and δ¹⁸O values were higher in June 2016 than in June 2011; these increases were more extreme along the left bank of the Tedori River than along the right bank. We explored the mixing of Tedori River water with groundwater using a two‐endmember mixing model based on their Sr concentrations and isotopic compositions. Compared to June 2011, mixing ratios were decreased near the Tedori River in 2016, and larger decreases were observed along the left bank and in the middle stream area. These results confirm that the contribution to groundwater recharge from the river decreased during the turbidity event, particularly along the left bank.

中文翻译：

日本Tedori河冲积扇发生滑坡后，地下水补给源对高浊度河水的响应的多指标研究

日本石川县大通河冲积扇中储存的大量地下水是当地饮用水和工业用水的重要来源。由于该河上游发生滑坡，从2015年5月开始至至少2017年11月，泰多里河被高度浑浊。滑坡发生后，在2015年和2016年的稻田灌溉期间，中河段附近的地下水位下降了几到10 m。该研究解决了高混浊水对河流和稻田地下水补给的影响。2016年，我们每两个月对地下水，河水，稻田灌溉水，稻田池塘水和降水进行了五次采样。我们分析了H，O，₄，和TN浓度和δ ^18个O值是在2016年6月比在2011年6月更高; 在泰多里河左岸，这些增加比在右岸更加极端。我们根据其Sr浓度和同位素组成，使用两端混合模型探索了Tedori河水与地下水的混合。与2011年6月相比，2016年泰多里河附近的混合比有所降低，沿左岸和中游地区的混合比有所下降。这些结果证实，在浑浊事件中，特别是沿左岸，对河流地下水补给的贡献降低了。

更新日期：2020-06-22

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11