نتایج جستجو برای: regional flood frequency analysis

تعداد نتایج: 3356496  

Journal: :Water 2023

In water resources management, environmental and ecological studies, estimation of design streamflow is often needed. For gauged catchments, at-site flood frequency analysis used for this purpose; however, ungauged regional (RFFA) the preferred method. RFFA attempts to transfer characteristics from catchments based on assumption homogeneity. A bibliometric presented here using Web Science (WoS)...

Journal: :JOURNAL OF JAPAN SOCIETY OF HYDROLOGY & WATER RESOURCES 2005

A. Abrishamchi and K. Farzamnia, S. S. Eslmian,

Accurate estimate of flood flows at selected return periods is a fundamental step in flood control and design of hydraulic structures. Due to the inadequacy or unavailability of flood flow records in several western catchments of Iran, traditional regional flood frequency methods lead to remarkable estimate errors, particularly for long return periods. In this research, discriminant analysis is...

2006
Mathieu Ribatet E. Sauquet Jean-Michel Grésillon Taha Ouarda Eric Sauquet

Flood Frequency Analysis is usually based on the fitting of an extreme value distribution to the series of local streamflow. However, when the local data series is short, frequency analysis results become unreliable. Regional frequency analysis is a convenient way to reduce the estimation uncertainty. In this work, we propose a regional Bayesian model for short record length sites. This model i...

2010
Tao Yang Chong-Yu Xu Xi Chen

The Pearl River Delta (PRD) has one of the most complicated deltaic drainage systems with probably the highest density of crisscross-river network in the world. This article presents a regional flood frequency analysis and recognition of spatial patterns for flood-frequency variations in the PRD region using the well-known index flood L-moments approach together with some advanced statistical t...

ژورنال: علوم آب و خاک 2012
عطاا... شیرزادی, , پرویز فتحی, , کامران چپی, ,

Estimation of flood hydrograph is of necessities in hydrological studies such as flood mitigation projects. This estimation in un-gauged watersheds is usually taken place using geomorphological characteristics of watersheds. The objective of this research is to estimate synthetic unit hydrograph using regional flood frequency analysis and geomorphological parameters of watersheds. 1-hour and 2-...

Journal: :desert 2006
a. salajegheh j dastorani

estimation of the magnitude and frequency of maximum instantaneous discharges and hydrographs are used for a variety of purposes, such as the design of bridges, culverts, flood-control structures; and the management and regulation of floodplains. fuller (1914), developed a flood-frequency formula based on analysis of flood peaks in hundred of streams to provide simple methods of estimating maxi...

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