Study of suspended sediment dynamics in a temperate coastal lagoon: Ria de Aveiro (Portugal)

被引：4
|
作者：
Plecha, Sandra [1 ]
Picado, Ana [1 ]
Chambel-Leitao, Pedro [2 ]
Dias, Joao M. [1 ]
Vaz, Nuno [1 ]
机构：
[1] Univ Aveiro, CESAM, NMEC, P-3800 Aveiro, Portugal
[2] Univ Tecn Lisboa, MARETEC, Lisbon, Portugal
来源：
JOURNAL OF COASTAL RESEARCH | 2014年
关键词：
Suspended sediment; sea level rise; sediments modeling; MOHID; TIDAL CHANNEL; TRANSPORT; PATTERNS; MODEL;
D O I：
10.2112/SI70-102.1
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Suspended sediment concentrations are simulated at Ria de Aveiro, a lagoon located in a temperate climate area in the northwest of Portugal. The fine-grained suspended sediment concentration is analyzed using the numerical model MOHID (www.mohid.com) and spatial maps of instantaneous and maximum concentration and also temporal variability at specified locations are analyzed in order to characterize the influence of the tide and sea level conditions in the suspended sediment concentrations within the lagoon. The highest suspended sediment concentrations were found in upstream areas during ebb conditions due to the river's proximity, while the minimum concentrations were observed near the inlet due to the presence of marine water poor in suspended sediments. When a 0.42 in sea-level rise (an estimate of conditions in 2100) is modelled, a decrease in suspended sediment concentration is observed for the overall study area, as result of an increase in the tidal prism.
引用
收藏
页码：604 / 609
页数：6
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