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PORTAIL D'INFORMATION GÉOGRAPHIQUE

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Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Tropical climatic variation on the Pacific slopes of the Ecuadorian Andes based on a 25,000-year pollen record from deep-sea sediment core Tri 163-31B
  • Climatic variation ; Core sampling ; Ecuador ; Isotope analysis ; Marine sediment ; Oxygen ; Palaeogeography ; Pollen analysis ; Tropical zone
  • The general correspondence between pollen and oxygen isotope variations in Tri 163-31B suggests that tropical climatic variations in the northern Andes were basically coherent with northern hemisphere glacier variations.
  • 1994
  • Abrupt climatic changes during the last glaciation based on pollen analysis of the Abric Romani, Catalonia, Spain
  • Catalonia ; Climatic variation ; Palaeoclimate ; Palaeogeography ; Palynology ; Pollen diagram ; Quaternary ; Spain ; Th/U dating
  • The Abric Romaní continental pollen record provides evidence of abrupt climate variations during the last glaciation. The pollen record reveals a pattern of high-frequency variations similar to that in ice cores as shown by oxygen isotopes or dust
  • 1994
  • Alaska ; Climatic variation ; Palaeo-ecology ; Palynology ; Pollen diagram ; Quaternary ; Taxonomy ; Tundra ; Vegetation
  • Pollen analysis of a new core from Joe Lake indicates that the late Quaternary vegetation of northwestern Alaska was characterized by four tundra and two forest-tundra types. These vegetation types were differentiated by combining quantitative
  • comparisons of fossil and modern pollen assemblages with traditional, qualitative approaches for inferring past vegetation, such as the use of indicator species.
  • 1994
  • Climatic change on the Iberian Peninsula recorded in a 30 000 yr pollen record from Lake Banyoles
  • Climatic variation ; Deglaciation ; Gerona ; Isotope analysis ; Palaeoclimatology ; Palynology ; Pollen diagram ; Quaternary ; Spain
  • 1994
  • C 14 dating ; California ; Estuary ; Holocene ; Palaeo-ecology ; Palynology ; Pollen diagram ; Quaternary ; Stratigraphy ; Taxonomy ; United States
  • The middle to late Holocene history and early Anglo-European settlement impacts on Santa Rosa Island, California, were studied through the analysis of sediments in a small estuarine marsh. A 5.4-m-long sediment core produced a stratigraphic
  • and pollen record spanning the last 5200 yr. Three major zones are distinguishable in the core.
  • 1994
  • Holocene ; Mountain ; Palynology ; Pollen analysis ; Portugal ; Quaternary ; Vegetation ; Vegetation dynamics
  • 1994
  • Biomass ; Burundi ; Carbon ; Climatic variation ; Holocene ; Humid environment ; Isotope analysis ; Palaeo-environment ; Palynology ; Peat bog ; Quaternary
  • of C3 and C4 plants in and around the swamp. The isotopic results are compared with the pollen data which have yielded a detailed record of vegetational and climatic changes in the Burundi mountains.
  • 1994
  • Discriminant function analysis of compositional data: an example from hydraulic geometry
  • Channel geometry ; Discriminant analysis ; Fluvial processes ; Methodology ; Statistics
  • Compositional discriminant function analysis of bank stability on the basis of hydraulic geometry had a success rate of 88%, making routinely archived measurements of stream width, cross-sectional area, mean velocity, and discharge a readily
  • 1994
  • Digital data acquisition and analysis: an introduction
  • Technical and software bulletin 1994
  • This article discusses recent developments and reviews some of the systems (PCs) which are currently available for data acquisition and analysis in the environmental sciences.
  • 1994
  • An analysis of American migration careers
  • Many of the previous longitudinal data of migration histories are too fragmented to clarify entire patterns of individual migration careers. Therefore, an analysis of migration histories, using more suitable materials, is necessary
  • 1994
  • Distance ; Econometry ; Error ; Estimation ; Matrix analysis ; Modelling ; Regression analysis ; Space time ; Spatial analysis ; Statistics
  • 1994
  • Multicriterion analysis and the evaluation of restoration policies for a Rhine estuary
  • Decision ; Delta ; Drainage ; Environment ; Estuary ; Flood control ; Fresh water ; Multi-criteria analysis ; Netherlands (The) ; Regional planning ; Rhine ; Sedimentation
  • and for cleanup of contamined bottom sediments. The paper is focusing on the role played by the Analytic Hierarchy Process and multicriterion analysis.
  • 1994
  • Use of numerical estimators and multivariate analysis to characterize the genesis and pedogenic evolution of xeralfs from southern Spain
  • Andalusia ; Arid area ; Clay mineral ; Jaén ; Micromorphology ; Multivariate analysis ; Pedogenesis ; Soil properties ; Spain ; Statistics
  • chosen as the most informative of the genesis of these soils, and c) multivariate analysis.
  • 1994
  • A district-level analysis of cholera diffusion in European Russia in 1848
  • Diffusion ; Epidemic ; European part of Russia ; Health ; Historical geography ; Nineteenth Century ; Spatial analysis ; Years 1840-49
  • The purposes of this study are to present a small-area analysis of cholera diffusion during the 1848 epidemic in Russia and to identify the appropriate theoretical model or models for its spread in this particular time and place.
  • 1994
  • Extrapolation ; Lake ; Quantitative analysis ; Regression analysis ; Sweden
  • 1994
  • A framework for regional modeling and impact analysis: an analysis of the demand for electricity by large municipalities in Ontario, Canada
  • Canada ; Demand ; Electricity ; Energy consumption ; Forecast ; Matrix analysis ; Model ; Ontario ; Probability ; Regional model ; Time series ; Utility fonction
  • 1994
  • Causal mechanisms of motorization in the medium-sized local cities of Japan : a cross-section analysis in 1990
  • Japan ; Medium-sized town ; Multivariate analysis ; Transport system ; Urban traffic ; Urban transport
  • 1994
  • with direct factor analysis, and step-wise multiple regression analysis. 18 municipalities (shi) are selected for the analysis. As a result, three image dimensions are obtained. - (KA)
  • 1994
  • Methodological steps in the development of multivariate indexes for urban and regional policy analysis
  • Choice ; Economic indicators ; Index ; Methodology ; Multivariate analysis ; Regional policy ; Social indicators ; Urban policy
  • 1994
  • This study identifies those geographic regions with the greatest potential influence on forest ozone concentrations via a climatological analysis of air-mass trajectories. In this analysis, observed meteorological data and a trajectory model
  • are used to calculate the spatial history of polluted air-masses. Multiple trajectories are examined using a newly adapted methodology of ensemble trajectory analysis in combination with ozone data and key synoptic weather patterns from a related
  • 1994