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Nelson J.M.,U.S. Geological Survey | Shimizu Y.,Hokkaido University | Abe T.,Civil Engineering Research Institute CERI | Asahi K.,RiverLink Corporation | And 13 more authors.
Advances in Water Resources | Year: 2015

This paper describes a new, public-domain interface for modeling flow, sediment transport and morphodynamics in rivers and other geophysical flows. The interface is named after the International River Interface Cooperative (iRIC), the group that constructed the interface and many of the current solvers included in iRIC. The interface is entirely free to any user and currently houses thirteen models ranging from simple one-dimensional models through three-dimensional large-eddy simulation models. Solvers are only loosely coupled to the interface so it is straightforward to modify existing solvers or to introduce other solvers into the system. Six of the most widely-used solvers are described in detail including example calculations to serve as an aid for users choosing what approach might be most appropriate for their own applications. The example calculations range from practical computations of bed evolution in natural rivers to highly detailed predictions of the development of small-scale bedforms on an initially flat bed. The remaining solvers are also briefly described. Although the focus of most solvers is coupled flow and morphodynamics, several of the solvers are also specifically aimed at providing flood inundation predictions over large spatial domains. Potential users can download the application, solvers, manuals, and educational materials including detailed tutorials at www.-i-ric.org. The iRIC development group encourages scientists and engineers to use the tool and to consider adding their own methods to the iRIC suite of tools. © 2015.

Miyafuji H.,Chiyoda Corporation | Hirai Y.,Civil Engineering Research Institute CERI | Suzuki Y.,Hokkaido Regional Development Bureau
Journal of Disaster Research | Year: 2012

The Hokkaido Regional Development Bureau organized the Committee for Conservation of the River Environment in the Kushiro Wetland in 1999. The Committee summarized and released an epoch-making proposal for conservation of the river environment of the Kushiro Wetland in 2001. Governments and other organizations have since conducted measures based on the proposal for restoring and conserving the Kushiro Wetland. In 2011, river restoration in the Kayanuma area, one of the most symbolically important measures, was completed and various monitoring research is being executed. This report discusses specific effects of the project. The Kushiro Wetland has the function of a natural flood control basin and reduces the risk of damage by flooding. Work to restore and conserve the KushiroWetland thus greatly contributes to maintaining the function of flood control. This report also discusses specific contributions to flood control by the Kushiro Wetland.

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