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Portail d'information géographique

Résultats de la recherche (61 résultats)

Történeti és természetföldrajzi adatok Báta fejlödésének elemzéséhez

pattern, employment, transportation, the main transportation routes, dramatic historical events, ethnic composition of the population, effects of natural disasters, re-structuring of the ground pattern of the settlement and the state of the environment
1998

Floods in Sikkim Himalaya - their causes, course and effects

and channel subsystems. In the subsiding plains, overflooding, lateral shifting of channel are avulsion over the extensive alluvial fans occurs during such extreme events. - (DG)
1998

Progress in recent study of drought, flood and waterlogging damages in China

The study of Drought, Flood and Waterlogging Damage (DFWD) aims at mainly solving 4 basic problems : 1) the change sequence in historical period; 2) the mechanism and trigger event; 3) the loss estimation; 4) the measures of prevention and control
1998

Chevron ridges and runup deposits in the Bahamas from storms late in oxygen-isotope substage 5e

On low-lying areas of the Bahamas, extensive V-shaped storm-beach ridges (chevrons in this paper) were emplaced by similar, high-energy events. The origin of these storm ridges, associated run-up features, and boulder deposits, plus the implications
1998

Current approaches to modelling the spread of wildland fire : a review

of the final shape of a fire event. Both types are considered and also the potential applications of GIS and remote sensing technologies.
1998

A dendrogeomorphological analysis of snow avalanches in the Colorado Front Range, USA

In this study, dendrogeomorphological techniques are used to develop avalanche event chronologies and to reconstruct past slide magnitude at two sites located near Loveland Pass, Colorado Front Range. Avalanche path reconstruction
1998

Coarse bedload transport in a mountain river

transport events associated with the daily rise and fall in stream discharge were investigated. This paper reports the results of this study designed to describe fully the adjustment of river bed and turbulent flow to the unsteady passage of a pebble bedload.
1998

Snowmelt-generated runoff and soil erosion in Fife, Scotland

The hydrology and contrasting erosional responses of 2 snowmelt events on arable farmland in Fife are compared. It is investigated why apparently similar snowfalls produced different erosional responses. This knowledge will help identify threshold
1998

Effects of a pebble cluster on the turbulent structure of a depth-limited flow in a gravel-bed river

boundaries between zones where strong intermittent events are generated. They also highlight the difference between shedding and upwelling motions of the flow.
1998

Late Quaternary stratigraphy, chronology, and depositional processes on the slope of S.E. Baffin Island, detrital carbonate and Heinrich events : implications for onshore glacial history

Late Quaternary stratigraphy, chronology, and depositional processes on the slope of S.E. Baffin Island, detrital carbonate and Heinrich events : implications for onshore glacial history
1998

Propaganda célú politikai térképek és plakáttérképek készítése

up a team in 1957 with the aim of supplying the press with correct and cartographically appropriate, high quality maps. These maps were intended to inform about the geographical location current political events and phenomena. As a consequence
1998

Estimation des risques climatiques en fonction de la date de semis de l'orge au Maroc

Agroclimatology ; Cereal ; Climatic event ; Crop yield ; Morocco ; Pluviometry ; Precipitation ; Semi-arid area ; Vegetation cycle ; Water needs
1998

Dépôts salins et tempêtes à séquence sèche dans l'Ouest de la France

Brittany ; Cartography ; Coastal environment ; Exceptional event ; France ; Pollution ; Salt ; Storm ; Weather type
1998

CDW photogrammetry of low relief fluvial features : accuracy and implications for reach-scale sediment budgeting

Technical and software bulletin 1998
for sediment budgeting to provide a more accurate estimate of sediment flux rates that can be estimated on an event basis following repeat photogrammetry.
1998

Geochemical characterization of soil organic matter and variability of a postglacial detrital organic supply (Chaillexon Lake, France)

which was created by a rock collapse that dammed the paleovalley of the Doubs River about 12 000 years ago. Since this event, the sediment trap provides a continuous palaeoclimatic record for the Postglacial period. In conclusion, the story
1998

Human choice and climate change

Climatic event ; Climatic warming ; Environmental management ; Global change ; Greenhouse effect ; Impact ; Policy ; Population ; Research ; Social sciences ; Society
1998

Analyse et prise en compte des risques climatiques en agriculture : cas de la région maritime du Togo

Agricultural production ; Agriculture ; Climate ; Climatic anomaly ; Climatic event ; Farmer behaviour ; Maritime region ; Natural environment ; Pluviometry ; Settlement ; Soil science ; Togo ; Water resources
1998

Les crues exceptionnelles : un risque naturel ou un désastre causé par l'homme

Bangladesh ; Europe ; Exceptional event ; Flood ; Flood control ; Human impact ; Hydraulic works ; Inundation ; Natural hazards ; United States of America ; Water management
1998

Rainfall distribution and regime in Costa Rica and its response to the El Niño-Southern Oscillation

with the El Niño-Southern Oscillation (ENSO). ENSO can cause floods and droughts in different parts of the country in different seasons. AA. conclude by discussing explanatory mechanisms in rainfall regime in Costa Rica caused by ENSO warm events. - (SLD)
1998

Tracing 4,000 years of environmental history in the Cuzco Area, Peru, from the pollen record

with major climatic events (AD 100 and 1050), of agroforestry using Alnus. - (SLD)
1998