Thesis (M.S.)--University of Delaware, 2007. / Principal faculty advisor: Daniel J. Leathers, Dept. of Geography. Includes bibliographical references.

Thesis (Ph. D.)--University of Chicago, 1945. / Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 55-56).

Made available in DSpace on 2014-06-11T19:33:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-10-10Bitstream added on 2014-06-13T19:23:01Z : No. of bitstreams: 1 maia_dc_dr_rcla.pdf: 6898164 bytes, checksum: 733e22021409aa6674ba5fca9fc353d6 (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Nos últimos 15 anos as enchentes e a densidade demográfica de Ribeirão Preto aumentaram consideravelmente. As inundações em Ribeirão Preto são presentes na área urbana desde o início do século XX. As notícias de jornal veiculadas pela Folha Nordeste - SP e Folha Ribeirão, na ausência de dados climáticos e históricos sobre as enchentes, demonstraram ser uma fonte valiosa na análise dos impactos pluviais na área urbana de Ribeirão Preto. A análise das matérias demonstrou que as enchentes são veiculadas quando existe um grande prejuízo à população, como alagamento de casas e lojas, desaparecimento de pessoas, falta de transporte, queda de árvores e de energia elétrica etc. Em 2002 houve uma grande enchente, deixando Ribeirão Preto embaixo d'água, sob estado de calamidade pública. Em 17 anos de análise dos episódios de inundação na área urbana de Ribeirão Preto, conforme noticiado pelos jornais, mostram 45 ocorrências, ou seja, em média cerca de 3 inundações/ano, o que revela grande frequência do fenômeno. Os índices mostram que praticamente todo ano, entre os meses de outubro a março, têm-se enchentes na área urbana, com saldo de grandes prejuízos à população. De 1990 a 2006 existe uma tendência de aumento nas inundações na área urbana Ribeirão Preto, sendo que, na década de 90, do século XX, ocorreram 20 inundações e, nos 6 primeiros anos do século XXI, presenciou-se 24 inundações, ou seja, um aumento de 20%. Das 43 inundações ocorridas, foram descobertos 26 pontos de inundação, com destaque para duas regiões: a Vila Virgínia e a baixada, região comercial que se situa o mercado municipal, a rodoviária e o camelódromo. Com relação ao período diário da incidência das inundações, elas ocorrem, predominantemente, após o meio-dia. Em todas as enchentes ocorridas no período da análise, a circulação... / In the last 15 years, the floods and the demographic density in Ribeirão Preto municipality have considerably increased. Inundations in Ribeirão Preto municipality are present in the urban area since the beginning of the 20th century. Articles presented in Folha Nordeste-SP and Folha Ribeirão newspapers, in the absence of climatic and historical data about the floods, seemed to be a valuable source in the analysis of the pluvial impacts in Ribeirão Preto urban area. The analysis of the newspaper articles demonstrated that floods are presented in the media when there is a great damage to the population, such as houses inundations, people disappearance, lack of transportation, tree and electricity fall, etc. In 2002 there was a great flood in the city, leaving Ribeirão Preto under water and in public calamity state. The analysis of flood episodes in the Ribeirão Preto urban area, in 17 years, according to the articles presented by the newspapers, showed 45 occurrences, in other words, an average of 3 floods/year, which reveals a great frequency of this phenomenon. The indices show that almost during all the year, between October and March, there are floods in the urban are, with great damage to the population. From 1990 to 2006 there is an increasing tendency in the floods occurrence in Ribeirão Preto urban area, since that in the 90s decade of the 20th century, there were 20 inundations and in the first six years of the 21st century, there were 24 floods, in other words, an increase of 20%. From the 43 flood occurrences, 26 inundation sites were discovered, highlighting two regions: Virginia Village and a low area where it is situated the municipal market, the bus station and an informal commercial center (camelódromo). In relation to the daily period of flood incidence, they occur, mainly, after noon. In all the floods that occurred... (Complete abstract click electronic access below)

Orientador: Sandra Elisa Contri Pitton / Banca: Antonio Carlos Tavares / Banca: Anderson Luis Hebling Christofoletti / Banca: Deise Fabiana Ely / Banca: Francisco Arthur Silva Vecchia / Resumo: Nos últimos 15 anos as enchentes e a densidade demográfica de Ribeirão Preto aumentaram consideravelmente. As inundações em Ribeirão Preto são presentes na área urbana desde o início do século XX. As notícias de jornal veiculadas pela Folha Nordeste - SP e Folha Ribeirão, na ausência de dados climáticos e históricos sobre as enchentes, demonstraram ser uma fonte valiosa na análise dos impactos pluviais na área urbana de Ribeirão Preto. A análise das matérias demonstrou que as enchentes são veiculadas quando existe um grande prejuízo à população, como alagamento de casas e lojas, desaparecimento de pessoas, falta de transporte, queda de árvores e de energia elétrica etc. Em 2002 houve uma grande enchente, deixando Ribeirão Preto embaixo d'água, sob estado de calamidade pública. Em 17 anos de análise dos episódios de inundação na área urbana de Ribeirão Preto, conforme noticiado pelos jornais, mostram 45 ocorrências, ou seja, em média cerca de 3 inundações/ano, o que revela grande frequência do fenômeno. Os índices mostram que praticamente todo ano, entre os meses de outubro a março, têm-se enchentes na área urbana, com saldo de grandes prejuízos à população. De 1990 a 2006 existe uma tendência de aumento nas inundações na área urbana Ribeirão Preto, sendo que, na década de 90, do século XX, ocorreram 20 inundações e, nos 6 primeiros anos do século XXI, presenciou-se 24 inundações, ou seja, um aumento de 20%. Das 43 inundações ocorridas, foram descobertos 26 pontos de inundação, com destaque para duas regiões: a Vila Virgínia e a baixada, região comercial que se situa o mercado municipal, a rodoviária e o camelódromo. Com relação ao período diário da incidência das inundações, elas ocorrem, predominantemente, após o meio-dia. Em todas as enchentes ocorridas no período da análise, a circulação... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: In the last 15 years, the floods and the demographic density in Ribeirão Preto municipality have considerably increased. Inundations in Ribeirão Preto municipality are present in the urban area since the beginning of the 20th century. Articles presented in Folha Nordeste-SP and Folha Ribeirão newspapers, in the absence of climatic and historical data about the floods, seemed to be a valuable source in the analysis of the pluvial impacts in Ribeirão Preto urban area. The analysis of the newspaper articles demonstrated that floods are presented in the media when there is a great damage to the population, such as houses inundations, people disappearance, lack of transportation, tree and electricity fall, etc. In 2002 there was a great flood in the city, leaving Ribeirão Preto under water and in public calamity state. The analysis of flood episodes in the Ribeirão Preto urban area, in 17 years, according to the articles presented by the newspapers, showed 45 occurrences, in other words, an average of 3 floods/year, which reveals a great frequency of this phenomenon. The indices show that almost during all the year, between October and March, there are floods in the urban are, with great damage to the population. From 1990 to 2006 there is an increasing tendency in the floods occurrence in Ribeirão Preto urban area, since that in the 90s decade of the 20th century, there were 20 inundations and in the first six years of the 21st century, there were 24 floods, in other words, an increase of 20%. From the 43 flood occurrences, 26 inundation sites were discovered, highlighting two regions: Virginia Village and a low area where it is situated the municipal market, the bus station and an informal commercial center (camelódromo). In relation to the daily period of flood incidence, they occur, mainly, after noon. In all the floods that occurred... (Complete abstract click electronic access below) / Doutor

The phenomenon of the debris torrent is explored by examining the mechanisms of initiation, particularly those of rainfall and deforestation. The types of precipitation likely to contribute to instability are identified and data collection is reviewed. Debris torrents have characteristics unlike that of ordinary stream flow, and are capable of transporting massive quantities and sizes of material. Models to explain this transport capability are compared and contrasted. A theoretical analysis of the flow regime is carried out which is argued to be consistent with the observed turbulent nature of a debris torrent. This analysis is extended to the calculation of superelevation in bends and shows that current attempts to estimate velocities from super-elevation data may be very conservative. Further application of the turbulent stress analysis is used to estimate the angle of spread of the debris torrent in the deposition zone, and this analysis may be useful in zoning the downstream area to safeguard construction. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

This research aims to develop a large-scale locally relevant flood risk screening tool, that is, one capable of generating accurate probabilistic inundation maps quickly while still detecting localized nuisance-destructive flood potential. The CASCADE 2001 routing model is integrated with GIS to compare the predicted flood response to heavy rains at the watershed, subwatershed, and municipal levels. Therefore, the objective is to evaluate the impact of scale for determining flood risk in a community. The findings indicate that a watershed-level analysis captures most flooding. However, the flood prediction improves to match existing FEMA flood maps as drill-down occurs at the subwatershed and municipal scales. The drill-down modeling solution presented in this study provides the necessary degree of local relevance for excellent detection in developed areas because of the downscaling techniques and local infrastructure. This validated model framework supports the development and prioritization of protection plans that address flood resilience in the context of watershed master planning and the Community Rating System. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2021. / FAU Electronic Theses and Dissertations Collection

A dissertation submitted to the School of Geography, Archaeology and Environmental Studies, Faculty of Science at the University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science. Johannesburg, 2016. / The Crocodile River East in Mpumalanga Province, South Africa, has seen three major floods in a twenty-four-month period, specifically January 2011, January 2012 and January 2013. The damage included the loss of life, damage and/or loss of public or private properties, agricultural land loss, and damage to biodiversity and river geomorphology. The purpose of this study was to understand the consequences and risks to livelihoods and river basin systems due to flooding of the river. The study focused on a segment of the Crocodile River East, between Riverside and Tekwane. The study used historic hydro-climatic data for the Crocodile River to determine the critical threshold for past flood events and to predict the extent of future flood events. Hydrological modelling coupled with the HEC-RAS hydraulic model enabled the simulation of these future flood events. The use of orthophotos and digital elevation models (DEMs) allowed for a spatial representation of the areas affected during the flood events. Flood hazard maps and flood risk maps were then developed for the identified flood events within a Geographical Information System (GIS). The maps enabled the identification of high risk and flood prone areas along this segment of the Crocodile River Basin. The results showed that when discharge reaches 241.75 m3/s, both locations (Riverside and Tekwane) are at risk to flooding. This is therefore the threshold for which the two locations are likely to be flooded. This study provides a methodology to determine the spatial extent of past and modelled future river flood events. As such, outcomes of this study may aid in the understanding of flood hazard extent and flood prone areas, and may thus help catchment management authorities and institutions in flood reconstruction and flood risk management. The employed methodology can aid effective spatial planning, and can also be extended at the basin scale through integration with the existent flood warning system to gain an estimate of flood extent and flood risk. / TG2016

No description available.

No description available.