inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (5246 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre Par ville ? Par pays ? Par continent ?
  • IMPLAN's induced effects identified through multiplier decomposition
  • Employment ; Induced effect ; Input-output model ; Multiplicator ; Regional economy ; United States of America
  • An analysis of regional multipliers is developed to reveal a structural flaw in how IMPLAN computes induced effects. A multiplier decomposition is developed that separates direct and indirect effects from the induced and further separates
  • the induced impact into relative wage and regional income retention effects.
  • Gypsum karstification induced subsidence: effects on alluvial systems and derived geohazards (Calatayud Graben, Iberian Range, Spain)
  • In the proximity of Calatayud, 2 types of subsidence induced by the karstification of Tertiary evaporites have been observed: -subsidence in Neogene sediments filling the Calatayud Graben;- subsidence in Quaternary alluvial deposits. Although both
  • Employment effects of environmental policy in Greece
  • Employment ; Employment structure ; Environment ; Environment conservation ; Greece ; Induced effect ; Pollution control
  • Neotectonic effects on sinuosity and channel migration, Belle Fourche River, western South Dakota
  • In this paper the AA. attempt to show that anomalous downstream variations in meander migration rates and sinuosity along an 81-km-long section of a small meandering channel, the Belle Fourche River, are best explained as effects of localized
  • , neotectonically induced deformation.
  • Rainfall-induced consolidation and sealing effects on soil erodibility during concentrated runoff for loess-derived topsoils
  • Flume experiments simulating concentrated runoff were carried out on remolded silt loam samples to measure the effect of rainfall-induced soil consolidation and soil surface sealing on soil erosion by concentrated flow for loess-derived soils
  • Loss of human lives induced by the cyclone of 29-30 april 1991 in Bangladesh
  • The 1991 Cyclone claimed more than 140 000 lives in Bangladesh. Comparison of human casualty figures between the cyclones of 1970 and 1991 points to the effectiveness of cyclone shelters constructed after the 1970 disaster. Many inaccuracies
  • of the regional data on social and natural circumstances affecting human losses are discussed. Non-structural countermeasures are important to make structural ones more effective.
  • Possible effects of CO-induced climate change on the world food system: a review
  • Belgium ; Employment ; Induced effect ; Innovation ; Service ; Tertiary sector ; Wallonie
  • The effects of global economic crisis in Hungary
  • Economic crisis ; Economic geography ; Household consumption ; Hungary ; Induced effect ; International economy ; Labour market ; National economy ; Socio-economic indicators
  • market and their effects on the situation of households. - (AM)
  • Dissolution and preservation of Antarctic diatoms and the effect on sediment thanatocoenoses
  • derived for the Southern Ocean from surface sediment cannot be used safely without considering dissolution-induced changes upon diatom assemblages.
  • The effect of topography on the development of salt-affected soils in Hungary in Environmental and dynamic geomorphology.
  • The governing role of topography is stressed in the spatial distribution of salt-affected soils and in the constellation of conditions inducing solonchak formation. Flood-plain geomorphological patterns (natural levees and enclosed depressions
  • Development-induced food insecurity in the Middle Senegal Valley
  • is maaged without taking into account downstream smallholder productivity. The effects of flood-deficit years can be seen in increased frood shortages among the majority of farmers who do not have access to irrigation.
  • A pilot study on needle ice induced stream-bank erosion in the Mashai Valley, Lesotho Highlands
  • The likely impact of needle ice processes in the bank erosion system in Lesotho Highlands is examined. It was found that despite the significance of frost activity during winter, rain wash and stream discharge are more effective in sediment
  • Stratigraphic evidence for anthropogenically induced coastal environmental change from Oaxaca, Mexico
  • a stratigraphically and chronologically distinct record of major hurricane strikes during late Holocene times, possibly caused by increased El Niño frequencies. These environmental changes may have had significant effects on human populations in the region.
  • Disaggregating induced intensification for land-change analysis : a case study from Madagascar
  • and associated land change. Results reveal a positive response to land pressure, with expansion of both market tree crops and irrigated rice fields. Exogenous policies may not have their desired effect in Andapa.
  • The effect of hedonic migration decisions and region-specific amenities on industrial location : could Silicon Valley be in South Dakota ?
  • do not follow workers completely to their most preferred locations but engage in a trade-off between following and compensation. Concentration of firms can be induced by regional amenities, independent of their agglomeration effects.
  • The paper moves occupational mobility, hedonic preferences and induced wage-amenity trade-off into the center of location theory. Regional amenities emerge as important determinants of location patterns in human capital intensive industries. Firms
  • The response of northern extratropical climate and vegetation to orbitally induced changes in insolation during the last interglaciation
  • This paper presents Atmospheric General Circulation Model (AGCM) simulations of the effect of orbital variations on northern hemisphere extratropical climates. The goal is to use these simulations to help explain observed paleoenvironmental changes
  • during the last interglaciation. The simulations are offered as sensitivity studies, i.e., the AA. focus on the effects of orbital variations and do not consider the possible further effects of other climatic controls such as atmospheric CO2. Simulated
  • The effect of tillage-induced roughness on runoff and erosion patterns
  • ), a landuse map and the major tillage orientation per tilled field as input. Runoff patterns created with the model could be used in any raster-based erosion model. The effect of the runoff pattern on simulated erosion patterns is shown for one field using
  • Estimating land cover-induced increases in daytime summer temperatures near Mt. Adams, Washington
  • The AA. present an approach for developing a land cover-induced daytime-high-temperature model in an activelly and historically logged terrain west of Mount Adams, Washington, by combining field data of near surface temperatures in young-regrowth
  • . The model of near-surface temperatures and the temperature differences due to land cover change is discussed in the context of the pootential effects on recent changes in the geometry of Cascades glaciers.
  • Soil freeze-thaw-induced changes to a simulated rill : potential impacts on soil erosion
  • The objective of this study was to measure the effects of one of the soil processes that affect rill geometry, soil freeze-thaw (FT) cycling. An unvegetated rectangular rill was subjected to 2 FT cycles, each lasting several days, in a controlled
  • laboratory setting. The FT cycling increased the water content and reduced the cohesion in the surface soil along the rill sufficiently to induce soil slumps and mud flows along the sidewalls of the rill. These mass failures changed the rectangular rill