Multiscale finite-element modelling of river-sea continua
Multiscale finite-element modelling of river-sea continua
复制标题
河海连续体多尺度有限元建模
DOI：
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复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
B. D. Brye
中科院分区：
文献类型：
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作者：
B. D. Brye
沿海地区和河流大多数时候是使用不同的工具和方法建模的。因此，耦合两个这样的模型是一项艰巨的任务。利用有限元方法，可以使用非结构化网格，空间分辨率可以在整个区域内变化很大，使得在同一模型中模拟河网和相邻海岸带成为可能。本文的目的之一是探讨其可行性，所采用的模式是SLIM，即第二代Louvain-la-Neuve冰-海模式（www.climate.be/slim）。开发了两个应用程序。第一个是斯海尔德连续体（比利时/荷兰），其网格覆盖根特周围的淡水潮汐河流网络、斯海尔德河口和整个大陆架。第二个是Mahakam连续体（印度尼西亚）。在这个应用程序中，该域由三个连接到河流网络的湖泊组成，该河流网络在到达大海之前导致复杂的三角洲。在这两个领域的水动力学校准和模型被用来计算的斯海尔德河口和Mahakam三角洲的更新时标。更新的时间尺度，如停留时间，暴露时间和年龄是衡量的速度，最初在河口或三角洲的水更新。这种诊断与许多环境变量有直接联系，可用于提高对连续体内生态动态的理解。
Coastal zones and rivers are most of the time modelled using different tools and approaches. Therefore, coupling two such models is a task that is far from trivial. With the finite-element method, unstructured meshes can be used and the spatial resolution can vary widely over the domain, making it possible to simulate river networks and the adjacent coastal zone in the same model. Investigating the feasibility thereof is one of the objectives of this thesis, in which the model utilized is SLIM, i.e. the Second-generation Louvain-la-Neuve Ice-ocean Model (www.climate.be/slim). Two applications have been developed. The first one is the Scheldt continuum (Belgium/The Netherlands) for which the grid covers the freshwater tidal river network around Ghent, the Scheldt Estuary and the whole continental shelf. The second is the Mahakam continuum (Indonesia). In this application, the domain is composed of three lakes connected to a river network that leads to a complex delta before reaching the sea. The hydrodynamics was calibrated in the two domains and the model was used to compute the renewing timescales of the Scheldt Estuary and the Mahakam Delta. The renewing timescales such as the residence time, the exposure time and the age are measures of the rate at which the water initially in the estuary or the delta is renewed. Such diagnoses have direct links with many environmental variables and can be used to improve the understanding of the ecological dynamics inside the continuum.
影响因子：
4.1
作者：
ROE, PL
通讯作者：
ROE, PL
(2008) 与厄尔尼诺南方涛动相关的严重干旱对婆罗洲光吸引叶甲虫鞘翅目 (Chrysomelidae) 组合的影响
DOI：
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发表时间：
2008
期刊：
Journal of Tropical Ecology 24
影响因子：
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作者：
Kishimoto-Yamada;K. and Itioka;T.
通讯作者：
T.