نتایج جستجو برای: flood modeling

تعداد نتایج: 411190  

Journal: :Risk analysis : an official publication of the Society for Risk Analysis 2017
Francesco Serinaldi Chris G Kilsby

Floods are a natural hazard evolving in space and time according to meteorological and river basin dynamics, so that a single flood event can affect different regions over the event duration. This physical mechanism introduces spatio-temporal relationships between flood records and losses at different locations over a given time window that should be taken into account for an effective assessme...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Brenden Jongman Hessel C Winsemius Jeroen C J H Aerts Erin Coughlan de Perez Maarten K van Aalst Wolfgang Kron Philip J Ward

The global impacts of river floods are substantial and rising. Effective adaptation to the increasing risks requires an in-depth understanding of the physical and socioeconomic drivers of risk. Whereas the modeling of flood hazard and exposure has improved greatly, compelling evidence on spatiotemporal patterns in vulnerability of societies around the world is still lacking. Due to this knowled...

2008
A. W. Jayawardena

Climatic variability, unplanned land use pattern and encroachment into the flood plain are affecting the hydrology of Bagmati river basin of Nepal. In this study, methodology to improve present flood management system with non-structural countermeasures has been elaborated. Study of hydrological condition, basin scale rainfall runoff modeling and inundation analysis is helpful to prepare commun...

ژورنال: Journal of Research and Health 2016

  Abstract  Driving in flood is the first major cause of flood-related death. This study was aimed to determine risk factors associated with dangerous behavior of driving in flood and related behavioral modeling. This study was descriptive-analytical. Target population was 150 residents over 18 years old of Quchan city. Data was gathered by a questionnaire. chi-square test and logistic regress...

2008
Hyun-Han Kwon Casey Brown Upmanu Lall

[1] It is widely acknowledged that climate variability modifies the frequency spectrum of extreme hydrologic events. Traditional hydrological frequency analysis methods do not account for year to year shifts in flood risk distributions that arise due to changes in exogenous factors that affect the causal structure of flood risk. We use Hierarchical Bayesian Analysis to evaluate several factors ...

Journal: :Remote Sensing 2016
Yiwen Mei Efthymios I. Nikolopoulos Emmanouil N. Anagnostou Davide Zoccatelli Marco Borga

The error in satellite precipitation-driven complex terrain flood simulations is characterized in this study for eight different global satellite products and 128 flood events over the Eastern Italian Alps. The flood events are grouped according to two flood types: rain floods and flash floods. The satellite precipitation products and runoff simulations are evaluated based on systematic and ran...

2014
Ahmed T. Elsergany Amy L. Griffin Paul Tranter Sameer Alam

The planning of evacuation operations for a riverine flood disaster is vital for minimizing their negative impacts on human lives. This paper aims to develop a systematic method to model and plan evacuation trip generation and distribution for riverine floods. To achieve this aim, it adapts the transportation or Hitchcock problem, an operations research technique employed in conventional four-s...

Simulation of floodplain zones in Tehran's metropolitan watershed (case study: Kaan basin) Ezaatollah Ghanavati, Associate prof. Geographical science faculty, Kharzmi University Ali Ahmmadabadi. Assistance prof. Geographical science faculty, Kharzmi University Negar Gholami, MA in Geomorphology, Geographical science faculty, Kharzmi University Extended abstract Floodplains and adjacent riv...

2002
Y. K. Tung

Channel flow routing provides information on the movement of flood wave as it travels downstream. From the flood forecast viewpoint, it is desirable to have some knowledge about the expected arrival time of peak flow. However, many parameters involved in the flow routing model, in reality, can not be quantified with certainty. In this paper, a probabilistic analysis using the Mellin transform i...

Journal: :desert 2011
f. daliri h.s. seraji m. kholghi h. ahmadi

the main goal of this paper is to propose a new practical method for hydrologic soil group estimation in surface runoff process based on geomorphology facieses and slop. the determination of cn based on this method can reduce the time and cost of project. in this research the upstream rivers of glinak watershed have been used as a case study to examine the efficiency of proposed method with a c...

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