《Hydrological process》杂志刊登“地中海东部大陆架悬浮泥沙输移动态分析”
作者：Dina Vachtman, Amir Sandler, Noam Greenbaum, Barak Herut
刊物：《Hydrological process》，2013年，27卷第7期，1105–1116页
关键词：悬移质；洪水；河口；地中海东部；
摘要：这项研究提供了关于地中海东部河流沉积物运输的数据。研究者经常提及这一地区比较研究的重要性，但是数据却相当稀少。以色列最大的沿海河流是吉雄河（1100km2），对该河流长期的以及短期的水文和泥沙资料以及河口环境进行了分析。结果表明，在1944—2009年的65年期间，共发生了140次洪水，输送到海里的泥沙约2.58 × 106吨。在此期间，（一）洪水重现期为10年以上的洪水在过去的30年里几乎翻了一番，（二）年平均流量在过去的10年里增加约175%。短期（2年）的水文泥沙数据分析显示，约30%的上游河道的荷载沿着河床沉积而没有到达河口，即使是在大洪水事件中也是如此。造成这一观察结果的原因在很大程度上可以归于以下面：河床下切并低于海平面，斜坡非常低，相应的河流的功率和输运能力也降低。这项研究不仅强调了河流系统和河口过程在输沙上的相互制约作用，也强调了河道间动力作用的效果。
Dynamics of suspended sediment delivery to the Eastern Mediterranean continental shelf
Authors: Dina Vachtman, Amir Sandler, Noam Greenbaum, Barak Herut
Journal: Hydrological Processes，Volume 27, Issue 7, pages 1105–1116, 30 March 2013
Key words: suspended sediment; floods; estuary; eastern Mediterranean
Abstract: This study provides data on the fluvial sediment transport at the Eastern Mediterranean, an area in which the regional importance for comparative study has often been raised by investigators but the data are rather scarce. We analysed long- and short-term hydrologic and sedimentological data from one of the largest coastal streams of Israel, Qishon River (1100 km2), and its estuarine environment. The results indicate that during 65 years (1944–2009), a total 140 floods have contributed to the sea an amount of approximately 2.58 × 106 tons of sediment. During this period, (i) the number of floods with a return period of more than 10 years has almost doubled during the last 30 years, and (ii) the mean annual discharge during last 10 years increased by approximately 175%. The analysis of the short (2 years) hydrological and sediment data revealed that approximately 30% of the upstream channel loads do not reach the river mouth and are deposited along the channel bed, even during major flood events. This observation was attributed largely to the facts that the lower river bed is incised below sea level, to the very low slopes and to the correspondingly low stream power and transport capacity. The results of this study highlight the effect of interchannel dynamics as well as the constraints of interaction between fluvial system and estuarine processes on sediment transport.
原文链接：http://onlinelibrary.wiley.com/doi/10.1002/hyp.9265/abstract
翻译：张大茹；审核：何凡
