Interdisciplinary Perspective of Surface Water Flow Numerical Analysis

Kimura, Masaomi; Tanaka, Tomohiro; Azechi, Issaku; Nakatani, Kana; Yamazaki, Dai; Yoshioka, Hidekazu

doi:10.3178/jjshwr.30.307

Cited by 5 publications

(2 citation statements)

References 129 publications

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“…In 1954, Iwagaki and Sueishi applied the kinematic wave theory to the analysis of hillslope runoff [58,59], and soon after, Lighthill and Whitham [60] developed the kinematic wave theory for river flow tracking. Since then, this theory has been accepted as a standard tool for modeling surface flows and various other elementary hydrological processes [61,62]. The kinematic wave model, in which the watershed is described in terms of a collection of rectangular slopes and river channels, and rainwater flow, which is represented by a hydraulic continuity equation and a kinematic equation, is a widely used distributed physical model in Japan (see, for example, [24,62]).…”

Section: Brief History On Urban Runoff Modeling In Japanmentioning

confidence: 99%

“…Since then, this theory has been accepted as a standard tool for modeling surface flows and various other elementary hydrological processes [61,62]. The kinematic wave model, in which the watershed is described in terms of a collection of rectangular slopes and river channels, and rainwater flow, which is represented by a hydraulic continuity equation and a kinematic equation, is a widely used distributed physical model in Japan (see, for example, [24,62]). As an example of applications of the kinematic wave model to urban watersheds, in 1991, Ando et al [63] divided an urban watershed into rectangular sub-watersheds using spatially distributed rainfall and applied the kinematic wave model to each divided sub-watershed.…”

Section: Brief History On Urban Runoff Modeling In Japanmentioning

confidence: 99%

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Urban Flood Runoff Modeling in Japan: Recent Developments and Future Prospects

Kawamura

Amaguchi

Olsson

et al. 2023

Water

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Since the 20th century, Japan has experienced a period of very rapid urbanization. Cities have experienced substantial densification and expansion, resulting in gradually elevated flood risk. Urban flooding has also occurred in most large cities in Japan, particularly in Tokyo. In response to this growing problem, much effort and resources have been spent on research and development aimed at understanding, simulating, and managing urban flood risk in Japan. The objective of this review is to summarize, discuss, and share key outputs from some of the main research directions in this field, significant parts of which have been uniquely developed in Japan and only published in Japanese. After a general introduction to urban runoff modeling, in the next section, key historical works in Japan are summarized, followed by a description of the situation in Japan with respect to observations of precipitation and water level. Then, the storage function model approach is reviewed, including an extension to urban basins, as well as recent experiments with AI-based emulation in Japanese basins. Subsequently, we review the prospects of detailed hydrodynamic modeling involving high-resolution, vector-based Geographical Information System (GIS) data for the optimal description of the urban environment with applications in Tokyo. We conclude the paper with some future prospects related to urban flood risk modeling and assessment in Japan.

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Section: Brief History On Urban Runoff Modeling In Japanmentioning

confidence: 99%

Section: Brief History On Urban Runoff Modeling In Japanmentioning

confidence: 99%

Urban Flood Runoff Modeling in Japan: Recent Developments and Future Prospects

Kawamura

Amaguchi

Olsson

et al. 2023

Water

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Effect of Topographic Resolution on Runoff Analysis Discribed by Quadtree Grid System

SASAKI,

YASUDA

2024

Japanese Journal of JSCE

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Status Quo and Perspectives of Flood Runoff Analysis for Urban Watersheds

Kawamura

2018

J. Japan Soc. Hydrol. and Water Resour.

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This paper outlines the current status of flood runoff analysis for urban watersheds and presents its future prospects. First, I will describe the urban flood disaster, then briefly review the history of the runoff models before explaining the current state of application of flood runoff models for urban watersheds. Next, storage function models as the lumped conceptual model are outlined, and the urban storage function (USF) model is explained. Then, the necessity of a detailed distributed physical model in urban watershed is described by explaining the difference between mesh data and the urban landscape GIS delineation. I introduce TSR model which is a precise distributed physical model utilizing the urban landscape GIS delineation. Finally, I overlook the future issues to be solved for lumped conceptual and distributed physical models as well as making some recommendations for reduction of urban flood disaster.

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Interdisciplinary Perspective of Surface Water Flow Numerical Analysis

Cited by 5 publications

References 129 publications

Urban Flood Runoff Modeling in Japan: Recent Developments and Future Prospects

Urban Flood Runoff Modeling in Japan: Recent Developments and Future Prospects

Effect of Topographic Resolution on Runoff Analysis Discribed by Quadtree Grid System

Status Quo and Perspectives of Flood Runoff Analysis for Urban Watersheds

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