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标题：The Annual and Multi-Annual Variation of the Minimum Discharge in The Miletin Catchment (Romania). An Important Issue of Water Conservation
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作者：G. Romanescu ; C. Zaharia ; A.V. Sandu 等
期刊名称：International Journal of Conservation Science
印刷版ISSN：2067-533X
电子版ISSN：2067-8223
出版年度：2015
卷号：6
期号：4
页码：729-746
出版社：Alexandru Ioan Cuza University of Iasi
摘要：The Miletin catchment is situated in the central-eastern sector of the Jijia-Bahlui depression, a component of the Moldavian Plateau, which spans Eastern Romania. Climatic conditions feature average multi-annual precipitations of 500–550 mm/year, an average evapotranspiration of 650–700 mm/year, and temperatures often exceeding 30°C during the summer and down to -30°C during the winter. Due to these conditions, the local rivers (such as the Miletin) can only have a permanent discharge if strong underground waters feed them. This situation is only found in the case of large rivers, which never dry up. Data recording was performed for a period of 41 years. The lowest (minimum minimorum) discharge was 0 m3/s in the upper sector, and it was recorded in 1968, 1969, 1986, and 1987. The lowest discharge in the middle sector was of 0.001 m3/s, recorded only once in 1990. In the lower sector, downstream from the Halceni pound, the lowest discharge was of 0.002 m3/s, recorded in 2006 and 2008. These lowest discharge levels occurred during the summer and winter. Dry-spells and water collecting, increasingly more common during the last few years, means that the hydrostatic level of the groundwater regularly drops by 1–2 cm each year.
关键词：Drought period; Drying-up; Economic impact; Minimum discharge; Standard deviation