Suspended sediment yield under alternating dry/wet cycles in a Mediterranean river catchment: the case of the Ofanto River, southern Italy

IF 2.8 3区环境科学与生态学 Q2 WATER RESOURCES

Hydrological Sciences Journal-Journal Des Sciences Hydrologiques Pub Date : 2023-07-24 DOI:10.1080/02626667.2023.2236593

M. Bentivenga, J. de Vente, S. Giano, G. Prosser, M. Piccarreta

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引用次数: 1

Abstract

ABSTRACT This paper investigates how hydrological drought affected suspended sediment yield (SSY) in the Mediterranean Ofanto River basin, southern Italy, and in its five sub-basins from 1951 to 1989. The Standardized Precipitation Evaporation Index over a scale of 12 months (SPEI12) has been used to compute the hydrological drought in the investigated span of time. SPEI12, mean and maximum monthly discharge (Qmean and Qmax), monthly rainfall erosivity, monthly simple daily intensity index and monthly SSY were used to assess the relationships between dry/wet cycles, streamflow and SSY through the Pearson correlation matrix. Qmean and Qmax are significantly correlated with SSY, while SPEI12 and rainfall intensity do not show good correlation with SSY. Furthermore, from the overall analyses it emerges that sediment yield estimations were higher mainly during the wet period following a period of drought or during a drought period.

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地中海流域干湿交替循环下的悬浮泥沙产量：以意大利南部奥凡托河为例

摘要本文研究了1951年至1989年，意大利南部地中海-奥凡托河流域及其五个子流域的水文干旱对悬沙产量的影响。12个月尺度上的标准化降水蒸发指数（SPEI12）已用于计算所调查时间跨度内的水文干旱。SPEI12、月平均和最大流量（Qmean和Qmax）、月降雨侵蚀力、月简单日强度指数和月SSY用于通过Pearson相关矩阵评估干/湿周期、流量和SSY之间的关系。Qmean和Qmax与SSY显著相关，而SPEI12和降雨强度与SSY的相关性不好。此外，从总体分析中可以看出，沉积物产量估计值较高，主要是在干旱期后的湿润期或干旱期。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Hydrological Sciences Journal-Journal Des Sciences Hydrologiques 环境科学-水资源

CiteScore

6.60

自引率

11.40%

发文量

144

审稿时长

9.8 months

期刊介绍： Hydrological Sciences Journal is an international journal focused on hydrology and the relationship of water to atmospheric processes and climate. Hydrological Sciences Journal is the official journal of the International Association of Hydrological Sciences (IAHS). Hydrological Sciences Journal aims to provide a forum for original papers and for the exchange of information and views on significant developments in hydrology worldwide on subjects including: Hydrological cycle and processes Surface water Groundwater Water resource systems and management Geographical factors Earth and atmospheric processes Hydrological extremes and their impact Hydrological Sciences Journal offers a variety of formats for paper submission, including original articles, scientific notes, discussions, and rapid communications.