نتایج جستجو برای: during flood occurrence
تعداد نتایج: 1819002 فیلتر نتایج به سال:
As part of the contribution to flood disaster risk reduction, it is important to identify and characterize flood areas, locations, and durations. Multiple satellite-based flood mapping and monitoring are an imperative process and the fundamental part of risk assessment in disaster risk management. In this paper, the MODIS-derived synchronized floodwater index (SfWi) was used to detect the maxim...
In this study, long-term (1961–2011) variations in the moisture budget and drought/flood events in six subregions of China are analyzed. Water vapor is mainly transported zonally during winter, while meridional transport is much stronger during summer. During winter, both the input moisture from the western boundary and the output moisture from the eastern boundary are slightly weakened; thus, ...
Floods through inundated urban environments constitute a hazard to the population and infrastructure. A series of field measurements were performed in an inundated section of the City of Brisbane (Australia) during a major flood in January 2011. Using an acoustic Doppler velocimeter (ADV), detailed velocity and suspended sediment concentration measurements were conducted about the peak of the f...
Coastal floodplains are productive ecosystems that depend on a regular hydrologic regime that includes a predictable flooding event. Since 2011, ~60-76% of Georgia has experienced abnormally dry to extreme drought conditions. To investigate how an extended drought affects a floodplain ecosystem, we characterized benthic macroinvertebrate communities and organic matter standing stocks on a flood...
Natural disasters are the result of interaction between physical impact and vulnerability peopleand environment. Flood risk is a product region's exposure to natural disasters. Climateprojections indicate an increased floods in future and, therefore, internal floodspredicted by climate change. This paper presents methodology procedure for flood assessment using GISand occurrence models
Flood spreading is among preventing method from damage of deluge, especially perishing of water and soil in latrine basins of arid and semiarid regions. Accumulation of sediments on the flood spreads regions lead to changes in soil fertility, revival and support of plant covering and controlling of desertification and change in physicochemical properties of soil in these regions. In order to me...
Flood plains and the area near to the rivers channels, because of their special circumstances such as fertility and water resources are appropriate situations for the social and agricultural activities, but due to morphological characteristics usually, these area are affected by different flood hazards. However, in these areas, determination of flood zone and its height and also detecting prope...
Coastal flooding is one of the serious problems facing most coastal areas in world. On January 17 and December 7, 2021, hit area Manado, North Sulawesi, Indonesia. The disaster disrupted economic activities on coast Manado Bay. This study analyzed dynamics atmosphere sea during flood events using water level data from Geospatial Information Agency, which was then filtered to separate residual a...
Thirteen repetitions of a cross-channel transect in the Khuran Channel within the Strait of Hormuz allowed the description of the mean flow and semidiurnal tidal properties of a northsouth transect. Water velocity profiles were obtained with a 614.4 kHz TRDI Work Horse Broadband ADCP along this 3.3 km long transect on 10 October 2014, the third day of secondary spring tide. The M2, M4 and M6 fr...
Floods represent the most devastating natural hazards in the world, affecting more people and causing more property damage than any other natural phenomena. One of the important problems associated with flood monitoring is flood extent extraction from satellite imagery, since it is impractical to acquire the flood area through field observations. This paper presents a method to flood extent ext...
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