inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (1984 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Quantitative geomorphologic analysis to evaluate flood hazards
  • Flood ; Forecast ; Italy ; Natural hazards ; Toscana ; Watershed
  • The aim of this study is to evaluate flood hazards through the use of quantitative pregeomorphic methods, which were already applied to estimate mass movement hazards and accelerated erosion hazards in some Italian areas. The study area is the Fiume
  • Ombrone drainage basin (Central Italy), where wide zones of the main valley floors have been recently flooded. In the last decade of the past century the frequency of these hazardous events has increased. Results obtained allowed the identification
  • of zones prone to flood hazard and the evaluation of their hazard index. - (NF)
  • GIS-based landslide hazard assessment : an overview
  • Bibliography ; Concept ; Digital elevation model ; Geographical information system ; Landslide ; Natural hazards ; Slope
  • This paper deals with several aspects of landslide hazard assessment by presenting a focused review of GIS-based landslide hazard assessment : it starts with a framework for GIS-based assessment of landslide hazard; continues with a critical review
  • of the state of the art in using GIS and digital elevation models (DEM) for mapping and modelling landslide hazards; and concludes with a description of an integrated system for effective landslide hazard assessment and zonation incorporating artificial
  • Landslide hazard zoning using genetic programming
  • Automated mapping ; California ; Comparative study ; Discriminant analysis ; Landslide ; Model ; Natural hazards ; Thematic map ; United States of America
  • Genetic programming (GP) is presented as a technique to induce models that can be used with GIS data to map landslides hazard zones. This study explores the use of GP to discover causative or associative factors most important to landslides
  • and to induce a model for landslide hazard zoning using readily available data. The hazard maps are compared, both quantitatively and qualitatively, to a landslide-hazard map of the same area previously created by USGS (United States Geological Survey
  • Sequential analysis of China's hazards in geoscience
  • Natural hazard mitigation
  • Applied geomorphology ; Catastrophe ; China ; Classification ; Debris flow ; Desertification ; Dust storm ; Earthquake ; Forest fire ; Freeze-thaw cycle ; Human impact ; Natural hazards ; Soil erosion ; Tropical cyclone ; Tsunami
  • On the basis of a large number of eventful catastrophic seven major sequences with respect to the occurences and transformations in geo-hazards: 1) Dry-cold wind-drift sand (dust) storm type, 2) Warm-wet water-soil hazards type, 3) Wet-hot typhoon
  • hazards type, 4) Alpine freezing-gravity hazards type, 5) Earthquake-rainstorm and mud-rock flow type, 6) Earthquake-forest fire hazards type, 7) Earthquake-tsunami hazards type.
  • Assessment of landslide hazard
  • Alpes de Haute-Provence ; Alps (The) ; France ; Landslide ; Mass movement ; Methodology ; Natural hazards ; Slope ; Soil mechanics
  • This study focuses on the assessment of the hazard on local and regional scale of a particular type of mass movement, the landslide. The general aim is to extend the probabilistic soil mechanical approach to landslide hazard analysis. The study area
  • Geography and hazard education : some content, different agendas in Geographical education.
  • Natural hazards lie in the domain of both geography teachers and hazard managers but their ideologies and agendas may differ. If geography is to contribute to hazard mitigation, these differences must be addressed. Developments in environmental
  • Toward a policy-relevant hazard geography : critical comments on geographic natural hazard research
  • Hazard geography
  • Distribution of hazard types in a drainage basin and its relation to geomorphological setting
  • Geomorphology and natural hazards
  • Debris flow ; Inundation ; Japan ; Longitudinal section ; Natural hazards ; Sediment transport ; Slope gradient ; Stream ; Watershed
  • This paper examines first the segmentation of a river course based on the hazard types as characterized by sediment transport processes. Second, the sediment transport processes controlled by the shape of longitudinal profile of the river
  • are discussed. Third, the relationship between the shape of the longitudinal profile and the relief in the drainage basin is examined. And finally, how the distribution of relief in a drainage basin controls the distribution of hazard types is discussed.
  • Assessment and prediction of natural hazards from satellite imagery
  • Earthquake ; Fire ; Forecast ; Inundation ; Natural hazards ; Remote sensing ; Satellite imagery ; Years 2000-2009
  • First, the AA. review successfully launched satellites and advances in sensors that have become operational since 2000. Second, they review remote sensing and natural hazards case studies undertaken between 2000 and 2006. In particular
  • , they identify significant advances in the assessment and prediction of natural hazards related to the movements of eart, water, and fire. Third, they examine the current limitation of remote sensing technologies and identify future directions of natural hazards
  • Geomorphological survey for mass-movement hazard assessment
  • Natural hazard mitigation
  • Earthquake ; Geomorphological mapping ; Heavy rain ; Japan ; Landslide ; Mass movement ; Mountain ; Natural hazards ; Slope dynamics ; Volcano
  • Geomorphological survey is very useful for hazard assessment of mountainous area. This paper deals with basic ideas and mapping method of mass-movement hazard assessment survey from the geomorphological viewpoint.
  • The countermeasures against coastal hazards in Japan
  • Natural hazard mitigation
  • Coastal environment ; Coastal erosion ; Coastal protection ; Honshu ; Human impact ; Japan ; Monsoon ; Natural hazards ; Sand ; Tropical cyclone ; Tsunami
  • Most of the coastal lowlands are now so intensively used that a large proportion of the Japanese coast has been artificially modified. Therefore, coastal countermeasures against several kinds of natural and man-induced hazards are the serious
  • problems for Japanese. In this report, the A. will introduce some typical cases of countermeasures against coastal hazards in Japan.
  • The geography of hazardous waste disposal in England and Wales
  • An overview of drought in Kenya. Natural hazards research paradigm
  • Natural hazards in Taiwan
  • Natural hazard mitigation
  • Catastrophe ; Coastal erosion ; Dam ; Earthquake ; Flood ; Landslide ; Mass movement ; Natural hazards ; Soil erosion ; Taiwan ; Tropical cyclone
  • Landslide and soil loss are major hazards in mountains and hills while flooding and land subsidence in the alluvial plain and low land by the coast. The magnitude and occurrence of each kind of natural hazard are varied according to intensity
  • of process and physical geographic environment. However, the research on natural hazards have been promoted by academic institution and numerous reduction treatments such as dams, dikes have been constructed to mitigate the vulnerability to natural hazards.
  • Landslide hazard assessment in the Three Gorges area, China, using ASTER imagery : Wushan-Badong
  • China ; Drainage network ; Hubei ; Landslide ; Natural hazards ; Remote sensing ; Slope gradient ; Valley
  • The aims of this study are to develop a methodology for regional scale assessment of landslide hazard using remotely sensed data, and to produce a landslide hazard map of the Wushan-Badong area in the Three Gorges, from Advanced Spaceborn Thermal
  • Emission and Reflection Radiometer (ASTER) images. The area is undergoing rapid urban development, with slope instability causing a widespread natural hazard. The results indicate good correlation between classified high-hazard areas and field-confirmed
  • slope failures, and show the usefulness of ASTER imagery for landslide hazard assessment at a regional scale.
  • The influence of natural hazards on urban housing location
  • Assessment of geomorphic hazards and priorities for forest management on the Rigi north face, Switzerland
  • Mountain hazard geomorphology
  • Alps (The) ; Applied geomorphology ; Forest ; Mass movement ; Mountain ; Natural hazards ; Regional planning ; Slope dynamics ; Switzerland
  • Hazard mapping and zoning in Austria : methods and legal implications
  • Mountain hazard geomorphology
  • Alluvial cone ; Applied geomorphology ; Austria ; Avalanche ; Classification ; Flood ; Mountain ; Natural hazards ; Thematic mapping ; Torrent
  • Landslide hazard zonation: a case study in Garhwal Himalaya, India
  • Drainage ; Garhwal ; Himalaya ; India ; Landslide ; Lithology ; Methodology ; Mountain ; Natural hazards ; Slope gradient ; Thematic mapping ; Zonality
  • Presents a landslide hazard map of the Srinagar-Rudraprayag area in the vale of Kashmir. Quantitative date on landslides in different kinds of terrain and geological structure are examined, but not seismicity or precipitation. - (DWG)
  • The study of the physical environment and natural hazards in Latin America : progress and challenges
  • Climatology ; Environment ; Global change ; Latin America ; Natural hazards ; Physical geography ; Research
  • Most research on the physical geography of Latin America is done by Latin Americans and Europeans, not North Americans. Climatology and natural hazards have received special attention, both of which are increasingly placed in an environmental