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Résultats de la recherche (315 résultats)

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  • Baden-Württemberg ; Black Forest ; C 14 dating ; Forest ; Germany ; History ; Holocene ; Land use ; Pollen analysis ; Vegetation
  • L'A. utilise la datation au carbone 14 des pollens pour reconstituer l'histoire de la végétation holocène, du peuplement et de l'utilisation du sol. L'impact anthropique est aussi étudié.
  • 2002
  • C 14 dating ; Carbon ; Holocene ; Isotope analysis ; Lacustrine sediment ; Lake ; Lake level ; Meltwater ; Michigan ; Oxygen 18 ; Palaeo-ecology ; Palaeo-environment ; Pollen diagram ; Precipitation ; United States of America
  • Holocene sediments from Nelson Lake, on Michigan's eastern Upper Peninsula, provide isotopic, pollen, and charcoal evidence for a two-step sequence of changes in moisture source and increased lake-effect precipitation during the late Holocene
  • 2002
  • Asia ; Dendroclimatology ; Ecology ; High mountain ; Mountain ; Palaeo-environment ; Pollen analysis ; Vegetation
  • études dendrochronologiques, la caractérisation de la croissance des arbres est rendue difficile. Malgré les analyses polliniques du plateau tibétain, on distingue mal l'origine des pollens et les profils polliniques sont difficiles à interpréter.
  • 2002
  • Dating ; Fluvial processes ; Germany ; Glacial features ; Holocene ; Landscape dynamics ; Pollen analysis ; Rhine ; Rhineland-Palatinate ; Sedimentology
  • morphodynamiques et sédimentaires. Basée sur une analyse des pollens, une reconstitution détaillée de la végétation du paysage fluvial est réalisée.
  • 2002
  • Absolute dating ; Air temperature ; Arctic Region ; Climatic cooling ; Climatic variation ; Holocene ; Palaeo-environment ; Palaeoclimatology ; Palynology ; Pollen analysis ; Summer
  • 2002
  • Aeolian deposit ; Alaska ; Aleutian Islands ; C 14 dating ; Climate ; Ecosystem ; Grain size distribution ; Holocene ; Palaeo-environment ; Peat ; Pollen analysis ; Precipitation ; Sedimentology ; Temperature
  • 2002
  • Charcoal ; Holocene ; Lateglacial ; Palaeo-environment ; Palaeosol ; Pollen analysis ; Pyrénées ; Quaternary ; Slope ; Slope deposit ; Spain ; Stratigraphy
  • 2002
  • Carpathian Mountains ; Climatic variation ; Forest ; Palaeogeography ; Pollen analysis ; Postglacial ; Romania ; Vegetation dynamics
  • 2002
  • Second housing at the edge of Prague metropolitan area : a SWOT analysis
  • Two micro-regions in the southern hinterland of Prague are surveyed in the perspectives of their recreational and tourist functions in the context of some other functions. The regional comparison is made on an adjusted SWOT analysis. - (MS)
  • 2002
  • A microlevel analysis of residential context and travel time
  • Behaviour ; Commuting ; Form of transport ; Mode choice ; Multivariate analysis ; Netherlands (The) ; Residential environment ; Transport ; Travel time ; Trip
  • 2002
  • Matrix analysis ; Regression analysis ; Spatial analysis ; Spatial autocorrelation ; Statistics ; Test
  • 2002
  • The Felik landslide (Mount Rosa Massif) has been studied, through back analysis, and 2D and 3D numerical models based on the lumped-mass methods for block-fall analysis. Geotechnical parameters were assessed through a back-analysis aided by field
  • surveys, aerial photo and historical data analysis. Outcomes are verified for two rock-ice avalanches which ran along the Brenva Glacier (Mount Blanc Massif) in 1920 and 1997. Discussion of the results.
  • 2002
  • AIDS ; Health ; Matrix analysis ; Methodology ; New York City ; Spatial analysis ; United States of America
  • An example of warps analysis as applied to geographic data is presented. It focuses on the AIDS epidemic in two boroughs of New York City. Female adult AIDS incidence and percentage newborns exposed to HIV, by zip code for the years 1991-98
  • , are used to generate annual configurations within an ecological parameter space. A warps analysis of those configurations indicates a clear shift in the relative positions of Manhattan zip codes during the 1990s.
  • 2002
  • Derivation of the chalk superficial deposits of the North Downs, England : an application of discriminant analysis
  • Cenozoic ; Chalk ; Discriminant analysis ; England ; Grain size distribution ; Heavy minerals ; Model ; Sedimentology ; Surface deposits ; United Kingdom
  • This paper briefly surveys the role of superficial sediments in landscape models of the last 50 years and the methods used to characterize them. Stepwise discriminant analysis was then used on particle size and heavy mineral data from 276 sediment
  • 2002
  • Exploratory analysis of the world city network
  • Classification ; Cluster analysis ; Globalization ; Network ; Principal components analysis ; Taxonomy ; Urban geography ; World city
  • 2002
  • Exploring offence statistics in Stockholm City using spatial analysis tools
  • Criminality ; Delinquency ; Regression analysis ; Social change ; Spatial analysis ; Stockholm ; Sweden ; Urban area ; Urban environment ; Urban society
  • 2002
  • An econometric analysis of biproportional properties in an input-output model
  • Chicago ; Econometry ; Illinois ; Input-output model ; Matrix analysis ; United States of America ; Urban economy
  • . Using the empirical evidence for Chicago, the paper conducts econometric time series analysis to determine whether or not certain coefficients or sets of coefficients exhibit tendencies toward stability or predictable change or whether others require
  • 2002
  • Climate and the limits of permafrost : a zonal analysis
  • Air temperature ; Boundary ; Canada ; Climate ; Freezing ; Index ; Model ; Periglacial features ; Permafrost ; Snow ; Soil temperature ; Spatial analysis ; Thawing
  • This paper defines the climatic and environmental conditions that determine the limits and continuity of permafrost occurrence, in the Canadian context. The analysis utilizes a functional model that links air, surface and permafrost temperature
  • 2002