Flood avalanches in a semiarid basin with a dense reservoir network
Flood avalanches in a semiarid basin with a dense reservoir network
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水库网络密集的半干旱盆地的洪水崩塌
DOI：
10.1016/j.jhydrol.2014.03.001
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发表时间：
2014
影响因子：
6.4
通讯作者：
H. Herrmann
中科院分区：
文献类型：
--
作者：
Samuel J. Peter;José;Nuno A. M. Araújo;H. Herrmann
这项研究调查了巴西东北部半干旱地区密集水库网络中的洪水雪崩。居住在这一地区的人口在很大程度上依赖于这个网络的水的供应。在强烈的雨季降雨期间，水被储存起来，而在旱季，水从水库表面蒸发。这些季节变化是网络中水动态背后的驱动力。利用一种名为ResNetM的模型研究了洪水雪崩期间的水库网络及其连通性，该模型显式地模拟了每个水库。它以每日计算的每个水库的水量平衡为基础运行。泄漏的水库向下游的水库提供水，这可能会引发雪崩，在某些情况下，会影响到网络的很大一部分。主要的重点是研究总蓄水量和可观测到的最大的连通水库群之间的关系，这些水库在同一天内溢出。结果表明，数以千计的中小型水库具有较好的蓄水能力，而大型水库的蓄水能力较强。因此，它们可以在低水位下防止大型星团的形成。关于连通措施，在没有综合计划的情况下发展的实际水库网络比同一河网上随机产生的许多人工水库网络表现得更好(即，在相同的河网上产生了较小的雪崩，储水量相似)。
This study investigates flood avalanches in a dense reservoir network in the semiarid north-eastern Brazil. The population living in this area strongly depends on the availability of the water from this network. Water is stored during intense wet-season rainfall events and evaporates from the reservoir surface during the dry season. These seasonal changes are the driving forces behind the water dynamics in the network. The reservoir network and its connectivity properties during flood avalanches are investigated with a model called ResNetM, which simulates each reservoir explicitly. It runs on the basis of daily calculated water balances for each reservoir. A spilling reservoir contributes with water to the reservoir downstream, which can trigger avalanches affecting, in some cases, large fractions of the network. The main focus is on the study of the relation between the total amount of water stored and the largest observable cluster of connected reservoirs that overspill in the same day. It is shown that the thousands of small and middle-sized reservoirs are eminent for the retention of water upstream the large ones. Therefore, they prevent large clusters at a low level of water. Concerning connectivity measures, the actual reservoir network, which evolved without an integrated plan, performed better (i.e., generated smaller avalanches for similar amount of stored water) than numerous stochastically generated artificial reservoir networks on the same river network.
使用 WASA-SED 模型模拟半干旱流域沉积物产量和连通性的时空模式
影响因子：
3.5
作者：
P. H. A. Medeiros;A. Güntner;T. Francke;G. L. Mamede;J. C. d. Araújo
通讯作者：
J. C. d. Araújo
巴西半干旱盆地密集的水库网络导致沉积物重新分布
影响因子：
3.5
作者：
Lima Neto;Wiegand;de Araújo
通讯作者：
de Araújo
影响因子：
2.4
作者：
Costa Malveira, Vanda Tereza;de Araujo, Jose Carlos;Guentner, Andreas
通讯作者：
Guentner, Andreas