نتایج جستجو برای: shallow water model
تعداد نتایج: 2595951 فیلتر نتایج به سال:
The complexity of dynamical laws governing 3D atmospheric flows associated with incomplete and noisy observations makes the recovery of atmospheric dynamics from satellite images sequences very difficult. In this report, we face the challenging problem of estimating physical sound and timeconsistent horizontal motion fields at various atmospheric depths for a whole image sequence. Based on a ve...
[1] The leakage of water from three Agulhas rings has been studied in a high resolution global ocean model using a Lagrangian particle following technique. A bowl shaped ring boundary that reaches a radius of 140 km and a depth of 800 m separates regions of fast and slow leakage. The dilution of Agulhas ring water generally increases with depth, but a shallow secondary circulation enhances leak...
In this paper, we use the approximation of shallow water waves (Margaritondo 2005 Eur. J. Phys. 26 401) to understand the behavior of a tsunami in a variable depth. We deduce the shallow water wave equation and the continuity equation that must be satisfied when a wave encounters a discontinuity in the sea depth. A short explanation about how the tsunami hit the west coast of India is given bas...
i ii Abstract A model is proposed for the formation and evolution of three-dimensional sedimen-tary structures such as longshore sand ridges on the continental shelf in water deeper than that of the shoaling region. Owing to the striking similarity between the bar spacing and the length scales in which interactions among the most energetic modes of shallow water waves take place, we argue that ...
The European Water Framework Directive (WFD) requires that all aquatic ecosystems in their member states should reach ‘good’ ecological quality by 2015. To assess ecological quality, the WFD requires the definition of reference conditions using biological, physical and chemical indicators and the assignment of each water body to one of five quality classes using these indicators. Elaborate asse...
The shallow water equations model flows in rivers and coastal areas and have wide applications in ocean, hydraulic engineering, and atmospheric modeling. In [36], the authors constructed high order discontinuous Galerkin methods for the shallow water equations which can maintain the still water steady state exactly, and at the same time can preserve the nonnegativity of the water height without...
A Graphical User Interface (GUI) was developed for a user-friendly implementation of a water depth correction model. The Interactive Data Language (IDL)-based tool provides the prospective users with an interface that can be applied to perform water depth correction on hyperspectral images that contain shallow water bodies containing benthic habitat information. Users can select a pixel or a su...
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