Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 27 for “"Flash Flood"”.
-
Early warning system guidance to mitigate flash flood impacts in Petra region, Jordan
… occurrence of natural disasters; especially flash floods, are resulting the significant threats to many countries around the world. The truth that cannot be ignored, is that the effects of flash floods on the developing countries’ societies and economies are massive, compared with developed …
-
Remote Sensing For An Improved Geospatial Flash Flood Susceptibility Modeling Over An Arid Environment
Flash floods are the foremost cause of irretrievable environmental damage in the arid Arabian Peninsula. The better understanding of the geomorphologic, topographic, climatic, and hydrologic characteristics of a selected watershed, and determining their geospatial relationships with respect to the …
-
Land Cover Change and its Impacts on a Flash Flood-Producing Rain Event in Eastern Kentucky
… of atmospheric response of a significant flash flood-producing rainfall event by modifying land cover and topography. These reflect recent LCC, including mountaintop removal (MTR). We have used the Weather Research and Forecasting (WRF) model for this purpose. The study found changes in …
-
Developing a Multi-Band GNSS Remote Sensing Station To Measure Precipitable Water Vapor for Flash Flood Nowcasting
<p>Flash flood nowcasting in Central and Southern Appalachia is particularly challenging due to steep terrain, narrow valleys, highly localized rainfall patterns, and limited measurement coverage. Traditional remote sensing methods, such as Doppler radar and microwave radiometry, suffer from …
-
Flash Flooding in Eastern Kentucky: An Analysis of the 3-4 August 2001 Event
Limited research exists concerning flash flooding in the United States. However, flash floods can occur anywhere and cause more fatalities than any other weather related natural disaster. Eastern Kentucky experienced an average of 41 flash floods per year (1993-2002), yet little research exists for …
-
Modeling Flash Floods in Small Ungaged Watersheds using Embedded GIS
Effective prediction of localized flash flood regions for an approaching rainfall event requires an in-depth knowledge of the land surface and stream characteristics of the forecast area. Flash Flood Guidance (FFG) is currently formulated once or twice a day at the county level by River Forecast …
-
An Analysis of Key Aspects of Warm and Cool Season Flash Flooding in the Southern Appalachians
Flash flooding kills more people in the United States than any other severe weather phenomenon. One of the most vulnerable areas for flooding is the southern Appalachians. These mountains lie in a geographical location that places them near the Atlantic Ocean and the Gulf of Mexico, two major …
-
Development of flood prediction models using machine learning techniques
"Flooding and flash flooding events damage infrastructure elements and pose a significant threat to the safety of the people residing in susceptible regions. There are some methods that government authorities rely on to assist in predicting these events in advance to provide warning, but such …
-
Analysis, Modeling, and Forecasting Of Urban Flooding
… increase in frequency and intensity, urban flooding is an emerging concern. Urban flooding is caused when heavy rainfall collects on the landscape, exceeding the capacity of drainage systems to effectively convey runoff. Unlike riverine and coastal flooding, urban flooding occurs frequently, …
-
An examination of changes in rainfall, streamflow and landcover a case study of the Kandelaars catchment, Oudtshoorn, South Africa 1926 to 2008
… the magnitude, seasonality, and trends in flash-flood occurrence. The study site is situated South-West of the town of Oudtshoorn, which is part of a semi-arid basin, found between the Swartberg, Rooiberg, Outeniqua and Kammanassie mountains. This area is documented for its extensive …
-
A GPS-IPW Based Methodology for Forecasting Heavy Rain Events
… and the James rivers. The region is prone to flash flooding, typically the result of localized precipitation. Fortunately, within the region, there is an efficient system of instruments for real-time data gathering with IFLOWS (Integrated Flood Observing and Warning System) gages, WSR-88D …
-
The role of social media in measuring human response to urban flash flooding
… explores the role of social media in urban flooding. The author analyzes the activity of weibos (Chinese tweets) related to Beijing's "7.21" flash flood in the Sinaweibo system (the most popular social media open platform in China) and characterizes these weibos from the 37 hours following …
-
GEOMORPHOLOGICAL MAPPING OF THE K2 AREA, PAKISTAN USING GIS AND REMOTE SENSING
… and altitudinal zones. Case studies include flash flood deposits, active landslide areas, sackungen, and rock avalanches. The Skardu Basin has tills preserved on many higher slopes, and sand dunes cover wide areas of fluvial sediments from a braided river system. Extensive alluvial and debris …
-
GEOMORPHOLOGICAL MAPPING OF THE K2 AREA, PAKISTAN USING GIS AND REMOTE SENSING
… and altitudinal zones. Case studies include flash flood deposits, active landslide areas, sackungen, and rock avalanches. The Skardu Basin has tills preserved on many higher slopes, and sand dunes cover wide areas of fluvial sediments from a braided river system. Extensive alluvial and debris …
-
A study of flash floods on a small drainage area
An investigation was made of the flash flood of July 9, 1943, on the Blacksburg watershed with a view toward an approximation of the actual amount of water passing as run-off during the storm, as well as the peak rate of flow. All the available data have been reviewed with the above purpose in …
-
Macro and Micro Litter Accumulation in the San Marcos River San Marcos, Texas, USA
… every year. Additionally, San Marcos is in Flash Flood Alley, contributing to large amounts of runoff. Understanding the scope of litter pollution can assist with mitigation tactics that focus on source reduction of pollution. This study investigates litter accumulation in the first eight …
-
Performance of grassed swale as stormwater quantity control in lowland area
… reduces peak flows and minimizes the causes of flood. UTHM is a flood-prone area due to located in lowland area, has high groundwater level and low infiltration rates. The aim of this study is to assess the performance of grassed swale as a stormwater quantity control in UTHM. Flow depths and …
-
Down then Out: Basement Apartments and Housing Insecurity in the Face of Flood Risks
… New York’s National Weather Service’s first ever Flash Flood Emergency. By the time the storm cleared, 13 New Yorkers had been killed. Eleven of these individuals were in basement apartments, and 5 of the 6 homes where these fatalities occurred were illegally converted units. Though the City of …
-
Flood Processes in Semi-arid Streams: Sediment Transport, Flood Routing, and Groundwater - Surface Water Interactions
Flooding in semi-arid streams is highly variable but distinguished from its humid counterpart in terms of forcing conditions, landscape response, flood severity, and stream-aquifer connectivity. These floods have the potential for great benefit in a water-limited environment, but also great …
-
Online flood forecasting in fast responding catchments on the basis of a synthesis of artificial neural networks and process models
… of the state of the art in the field of flood forecasting opens this work. Advantages and shortcomings of currently available methods are identified and discussed. Amongst others, one important aspect considers the most exigent weak point of today’s forecasting systems: The representation …
Page 1 of 2