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Résultats de la recherche (72 résultats)

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Adapting to flood risk under climate change
  • Adapting to flood risk under climate change
  • Adaptation ; Australia ; Climatic change ; Flood ; Inundation ; Natural hazards ; Northern Territory ; Risk management ; Society-environment relationship ; Victoria ; Vulnerability
  • This paper reviews steps being taken by actors at international, national, regional and community levels to adapt to flood risk from tidal, fluvial, surface and groundwater sources. The AA. refer to existing inventories, national and sectoral
  • adaptation plans, flood inquiries, building and planning codes, city plans, research literature and international policy reviews. They distinguish between the enabling environment for adaptation and specific implementing measures to manage flood risk. The AA
  • . identify evidence of both types of adaptation following the catastrophic 2010/11 flooding in Victoria, Australia. However, significant challenges remain for managing transboundary flood risk (at all scales), protecting existing property at risk from
  • flooding, and ensuring equitable outcomes in terms of risk reduction for all. Adaptive management also raises questions about the wider preparedness of society to systematically monitor and respond to evolving flood risks and vulnerabilities.
  • 2012
Urban flood risk and hydrology
  • Urban flood risk and hydrology
  • Europe ; Flood ; Hungary ; Inundation ; Natural hazards ; Risk management ; Urban area ; Vulnerability ; Water cycle ; Water management
  • This paper provides an overview of the consequences of urbanisation on the hydrology of towns and cities, try to describe the urban hydrological cycle and the processes within the cycle that result in flooding. The AA. would like to introduce
  • the process of urban flood risk management. The central concept of this paper is to represent how it is possible to manage collectively the different aspects of the urban flood risk, and to demonstrate the successful management with them.
  • 2012
Micro-political and related barriers to stakeholder engagement in flood risk management
  • Micro-political and related barriers to stakeholder engagement in flood risk management
  • Decision making process ; Enquiry ; Flood ; Participation ; Policy ; Risk management ; Taiwan
  • The paper makes a critique about existing ideas about the barriers to stakeholder engaement in flood risk management and elsewhere, and by using a case study from Taiwan. Using in-depth interviews, the AA. find that failure to acknowledge and take
  • 2012
The significance of Gilbert F. White’s 1945 paper ‘Human adjustment to floods’ in the development of risk and hazard management
  • The significance of Gilbert F. White’s 1945 paper ‘Human adjustment to floods’ in the development of risk and hazard management
  • Colorado ; Flood ; Flood control ; Impact ; Natural hazards ; Research ; Risk management ; Twentieth Century ; United States of America
  • In this short paper the AA. reflect on the manner in which Gilbert F. White’s 1945 publication ‘Human adjustment to floods’ has not only shaped how we study and perceive flooding, but has also had a significance beyond its original aims
  • , revolutionizing the ways in which hazard and risk are conceptualized more generally. Before considering the impact of ‘Human adjustment to floods’, the AA. briefly review academic understanding of floods in the decades leading up to the 1940s and later place
  • 2012
The link between land-use management and fluvial flood risk : A chaotic conception?
  • The link between land-use management and fluvial flood risk : A chaotic conception?
  • Bibliography ; Chaos ; Climatic variability ; Concept ; Flood ; Flood control ; Land use ; Peak discharge ; Risk ; Scale ; The 2000's ; Watershed
  • The AA. use Sayer’s (1992) notion of a ‘chaotic conception’ to describe the belief that there is a simple and general association between land management and downstream flood risk rather than the impacts of land management being spatially
  • and temporally contingent in relation to the particular geographical location, time period and scale being considered. Their argument has important practical consequences because it implies that land-management activities to reduce downstream flood risk
  • will be different to traditional flood-reduction interventions such as levees. The purpose of demonstration projects then needs careful consideration such that conclusions made for one project are not transferred uncritically to other scales of analysis
  • 2012
18th-20th century flood-induced changes in the landscapes of the Mała Wisła Valley within the Qświęcimska Basin
  • 18th-20th century flood-induced changes in the landscapes of the Mała Wisła Valley within the Qświęcimska Basin
  • Cartographic display ; Flood ; Hydraulic works ; Landscape ; Landscape dynamics ; Poland ; Pond ; Valley ; Wisła
  • to this day was also put in place (in the 16th-17th centuries). Numerous floods regularly devastated the ponds, and the receding of floodwaters was followed by the rebuilding of ponds. This brought significant changes in the landscape of the valley.
  • 2012
A history of transboundary storm water flows : flooding, tunnels, and the spatial incongruity of the U.S.-Mexico border
  • A history of transboundary storm water flows : flooding, tunnels, and the spatial incongruity of the U.S.-Mexico border
  • Arizona ; Flood ; Historical geography ; Mexico ; Natural hazards ; Security ; Trans-border area ; Twentieth Century ; United States of America ; Urbanization
  • , urbanization, and impacts of chronic flooding. Discursive dynamics create spatial incongruities that influence the impacts of natural processes, such as storm water flow. The Arizona border is used as a case study.
  • 2012
Topographic predictors of susceptibility to alluvial fan flooding, Southern Apennines
  • Topographic predictors of susceptibility to alluvial fan flooding, Southern Apennines
  • Alluvial cone ; Appennino ; Campania ; Debris flow ; Environmental management ; Flood ; Forecast ; Geomorphometry ; Italy ; Natural hazards ; Piedmont ; Vulnerability ; Watershed
  • The AA. focus on the region of Campania which contains highly urbanized piedmont areas particularly vulnerable to flooding. Using geomorphological analysis they recognized active alluvial fans while stratigraphic analysis together with statistical
  • analysis of the morphometric variables was used to classify the fans in terms of the transport process involved. The results indicate that the best discrimination between debris flow (Df) and water flood (Wf) processes is achieved by means of 2 related
  • 2012
Analýza povodní na hornom toku Hrona v rokoch 1930-2010
  • Main focus of this research is concentrated on the flood analyses in the upper course of the Hron River in the period 1930-2010. The study includes an evaluation of the flood seasonality, frequency and extremity in two periods1930-1991 and 1992-2009
  • . The year 2010 has been added because of a very high amount of precipitation between May-September 2010 which caused extreme flooding. - (EN)
  • 2012
Life of a bifurcation in a gravel-bed braided river
  • Bar ; Bifurcation ; Braided channel ; Channel geometry ; Flood ; Italy ; Northeast Italy ; Space time ; Stream
  • Field data are presented here on a bifurcation in the Tagliamento River, northeast Italy. The planform configuration of the bifurcation and its temporal evolution was monitored by an automatic digital camera during a series of 7 floods
  • water levels. A relationship between width asymmetry and flood magnitude was observed. Moreover, the analysis based on recent theoretical findings pointed out the relevance of a correct assessment of the characteristic temporal scales, as the bifurcation
  • evolves on a timescale similar to that of bar migration and flood duration. Understanding the interactions between these processes is therefore crucial in order to increase the ability to model and predict the morphological evolution of a braided network.
  • 2012
Upstream and downstream controls of recent avulsions on the Taquari megafan, Pantanal, south-western Brazil
  • Aerial photography ; Avulsion ; Brazil ; C 14 dating ; Channel geometry ; Conceptual model ; Flood ; Fluvial capture ; Fluvial landform ; LANDSAT ; Mato Grosso ; Photointerpretation ; Stream
  • on megafans can be controlled by both upstream and downstream processes. Avulsions are commonly supposed to be preferentially triggered by high-magnitude floods, when there is considerable channel-belt superelevation. However, both avulsions studied here were
  • triggered by small to average floods, with modest channel-belt superelevation. The AA. conclude that flood magnitude and channel-belt superelevation have been overrated as causes of avulsion, and demonstrate additional causes that influence the growth
  • 2012
Sedimentary and hydrological studies of the Holocene palaeofloods in the middle reaches of the Jinghe River
  • China ; Dating ; Flood ; Holocene ; Optically stimulated luminescence ; Palaeohydrology ; Sedimentology ; Shaanxi ; Stratigraphic correlation ; Stream
  • that the palaeoflood slackwater deposits have recorded extraordinary flood events in the Jinghe River valley. According to stratigraphic correlation and OSL dating, the palaeoflood events were dated to 4100-4000 a BP. The palaeoflood peak discharges were estimated
  • by using the hydrological model and checked by different approaches. These results have the flood data sequence of the Jinghe River extended to 10,000-year time-scale. It provided significant data for hydraulic engineering and for mitigation of flood
  • 2012
Searching for useful non-systematic tree-ring data sources for flood hazard analysis using GIS tools
  • Searching for useful non-systematic tree-ring data sources for flood hazard analysis using GIS tools
  • Castilla-León ; Dendrogeomorphology ; Dendrology ; Flood ; Geographical information system ; Methodology ; Natural hazards ; Palaeohydrology ; Spain ; Watershed
  • frequency and magnitude of floods in basins without gauges could potentially be provided by dendrogeomorphological studies.
  • 2012
Floodplain retention capacity assessment for Lužnice river
  • Czech Republic ; Digital elevation model ; Drainage ; Flood ; Flood wave ; Floodplain ; Geographical information system ; Lužnice river ; Model ; Stream flow ; Topography ; Water retention
  • One of main topics of interdisciplinary project NIVA – Water Retention in Floodplains and Possibilities of Retention Capacity Increase is the assessment of flood wave transformation in the floodplain. Despite the fact that the main influence
  • on flood wave transformation is flow retardation due to the flow velocity decrease, the retention in surface depressions within floodplain has been analyzed to get better overview of whole transformation process. Detailed digital relief model (DRM) has been
  • 2012
Hyper-dry conditions provide new insights into the cause of extreme floods after wildfire
  • Hyper-dry conditions provide new insights into the cause of extreme floods after wildfire
  • Catastrophe ; Colorado ; Debris flow ; Drought ; Fire ; Flood ; Mountain ; Rill wash ; Rocky Mountains ; Soil moisture ; Soil properties ; United States of America
  • storm after a wildfire, nearly all rainfall becomes runoff causing extreme floods and debris flows.
  • 2012
Runoff variation and its response to climate change in the Three Rivers Source Region
  • China ; Climatic change ; Climatic trend ; Comparative study ; Flood ; Interannual variability ; Model ; Qinghai ; Runoff ; Scenario ; Watershed
  • Runoff at the 3 time scales (non-flooding season, flooding season and annual period) was simulated and tested from 1958 to 2005 at Tangnaihai (Yellow River Source Region : YeSR), Zhimenda (Yangtze River Source Region : YaSR) and Changdu (Lancang
  • 2012
Comparison of methods for quantifying active layer dynamics and bedload discharge in armoured gravel-bed rivers
  • Ardenne ; Belgium ; Duricrust ; Flood ; River bed ; Sediment load ; Sediment transport ; Stream ; Tracer
  • The bedload discharge in the Ardennian rivers (Belgium) has been evaluated by combining data obtained using the scour chains technique and the distance covered by tracers. Quantities of sediment transported during frequent floods are relatively low
  • to a depth of about 50 cm, indicating that exceptional floods may rework the bed to a considerable depth.
  • 2012
The anticipated emotional consequences of adaptive behaviour—impacts on the take-up of household flood-protection measures
  • The anticipated emotional consequences of adaptive behaviour—impacts on the take-up of household flood-protection measures
  • Adaptation ; Flood ; Household ; Impact ; Local population ; Perception ; Preventive measure ; Risk ; Security ; United Kingdom
  • 2012
The response of braided planform configuration to flow variations, bed reworking and vegetation : the case of the Tagliamento River, Italy
  • Braided channel ; Channel geometry ; Discharge ; Flood ; Friuli-Venezia Giulia ; Italy ; Riparian vegetation ; Stream ; Vegetation
  • The AA. investigated at-a-station relationships between water level and planform configuration on the Tagliamento River in northeast Italy, over a 2-year study period comprising 3 bankfull events and several small-to-medium floods. The analysis
  • digitized on more than 100 rectified images. Sequences of constant-level images spanning the study period were used to quantify the impact of floods on the stability of at-a-station relationships and on the turnover rate of water bodies. The analysis shows
  • 2012
Impacts of breaching on a bar-built estuary, example of the Senegal River new mouth monitored with satellite imagery from 2003 to 2010
  • Coastal dynamics ; Coastal environment ; Estuary ; Flood ; Flood control ; Human impact ; LANDSAT ; Remote sensing ; Senegal ; Time series
  • This paper presents the results of a survey of an estuary in Senegal since a human-induced breach was opened in a bar at the mouth of the embayment in October 2003 to reduce the effect of a major flood event. The evolution of the new mouth's width
  • 2012