inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (2816 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre Par ville ? Par pays ? Par continent ?
  • Assessing transformation and sustainability in the Great Lakes Basin
  • Canada ; Ecosystème ; Environnement ; Gestion de l'environnement ; Great Lakes bassin ; Géographie humaine ; Modèle ; Qualité de l'eau ; Utilisation du sol
  • The purpose of this paper is to apply the sociobiophysical evolution model (Grzybowski 1986| Grzybowski, Slocombe 1988) to the Great Lakes Basin and to explore its implications for management of the Basin.
  • Highest pluvial-lake shorelines and Pleistocene climate of the Western Great Basin
  • Climatic variation ; Drainage network ; Lake ; Lake level ; Nevada ; Palaeo-environment ; Pleistocene ; Tectonics ; United States of America
  • Shoreline altitudes of several pluvial lakes in the western Great Basin of North America record successively smaller lakes from the early to the late Pleistocene. This decrease in lake size indicates a long-term drying trend in the regional climate
  • that is not seen in global marine oxygen-isotope records. The previously unknown lake levels also reflect significant changes in tectonics, and (or) drainage-basin configurations, and could have facilitated migration of aquatic species in the Great Basin.
  • The Finnish landscape of the upper Great lakes
  • Amérique du Nord ; Architecture ; Culturel ; Finlandais ; Great Lakes, rég. ; Géographie de l'Amérique ; Habitat rural ; Immigré ; Maison rurale ; Michigan ; Minnesota ; Ontario ; Siècle XIX-XX ; Technique de construction ; Wisconsin
  • Lake Michigan bluff recession
  • Etats-Unis ; Falaise ; Great Lakes ; Géographie de l'Amérique ; Lac ; Ligne de rivage ; Michigan, lac ; Récession
  • A proposed diachronic revision of Late Quaternary time-stratigraphic classification in the eastern and northern Great Lakes area
  • Canada ; Chronostratigraphie ; Classification ; Datation C 14 ; Great Lakes ; Ontario ; Quaternaire ; Stratigraphie ; Terminologie ; Wisconsinien
  • C 14 dating ; Canada ; Chronostratigraphy ; Classification ; Great Lakes ; Ontario ; Quaternary ; Stratigraphy ; Terminology ; Wisconsinan
  • The AA. present the diachronic nomenclature for finer subdivisions of time and events since the penultimate glaciation (last 130,000 years), recognized in the eastern and northern Great Lakes area centered on Ontario. A deliberate attempt was made
  • The Mormon experience : the plains as Sinai, the Great Salt Lake as the Dead Sea, and the Great Basin as desert-cum-promised land
  • The experiences of the members of the Church of Jesus Christ of Latter-day Saints in migrating across the Great Plains to the valley of the Great Salt Lake, in colonizing the Wasatch oasis, and in occupying major portions of the Great Basin gave
  • Late Quaternary temporal and event classifications, Great Lakes region, North America
  • Amérique du Nord ; Canada ; Chronostratigraphie ; Classification ; Etats-Unis ; Glaciaire ; Great Lakes ; Interglaciaire ; Quaternaire ; Stratigraphie
  • Canada ; Chronostratigraphy ; Classification ; Glacial features ; Great Lakes ; Interglacial ; North America ; Quaternary ; Stratigraphy ; United States of America
  • In this paper, diachronic and event classifications are proposed for the Great Lakes region. Well-established names, including Wisconsin, Sangamon, and Illinois, are used at the episode (or glaciation/interglaciation) rank without significant
  • redefinition. The Hudson Episode (Interglaciation) is introduced for postglacial time, the current interglacial interval. The Wisconsin Episode is divided into the Ontario, Elgin, and Michigan Subepisodes in the eastern and northern parts of the Great Lakes
  • region and into the Athens and Michigan Subepisodes in the southern and western parts of the Great Lakes region.
  • Geomorphology applied to flooding problems of closed-basin lakes...specifically Great Salt Lake, Utah
  • Climatic variation ; Earthquake ; Human impact ; Inundation ; Lake ; Lake level ; Natural hazards ; Regional planning ; United States ; Utah ; Wind
  • This paper reports on how geomorphic evidence has contributed to an understanding and definition of flooding hazards associated with closed-basin lakes in the Great Basin of the western United States and specifically with the largest of these lakes
  • , Utah's Great Salt Lake. The understanding of past lake fluctuations based on geomorphic and historic evidence and the knowledge of effects of wind and earthquakes on lakes provide sufficient information to be used in estimating flooding risks associated
  • Some limitations of water quality models for large lakes: a case study of Lake Ontario
  • Amérique du Nord ; Eau ; Great Lakes ; Géochimie ; Géographie physique ; Lac ; Lac Ontario ; Modèle ; Phosphore ; Prévision ; Qualité de l'eau ; Simulation
  • Managing the Great Lakes as a transboundary coastal ecosystem
  • Canada ; Coopération transfrontalière ; Ecosystème aquatique ; Etats-Unis ; Gestion de l'eau ; Great Lakes ; Lac ; Littoral ; Stratégie d'acteurs
  • Aquatic ecosystem ; Canada ; Coastal environment ; Decision making process ; Great Lakes ; Lake ; Trans-border cooperation ; United States of America ; Water management
  • Salt dissolution features in saline lakes of the northern Great Plains, western Canada
  • Alberta ; Canada ; Carbonate dissolution ; Evaporite ; Lacustrine sediment ; Lake ; Manitoba ; Palaeo-environment ; Quaternary ; Salt lake ; Saskatchewan
  • Large-scale salt dissolution is an important process affecting the sediments of many of the saline lakes in the northern Great Plains region of western Canada. The most easily recognized features of this salt karst are water-filled chimneys
  • , vertical shafts, and collapse structures. Because these salt karst features can affect large vertical sections of the sediment fill in the lakes, their recognition is of fundamental importance in attempting to use the stratigraphic records of the basins
  • Utah's Great Salt Lake : a complex environmental-societal system
  • Ecosystem ; Environmental management ; Evaporation ; Hydrochemistry ; Lake ; Salt lake ; Society-environment relationship ; System analysis ; United States of America ; Utah
  • The Great Salt Lake is a highly complex system, consisting of physical and chemical lake properties and environmental and societal subsystems. Using a system approach, this article aims to identify some of the key components of this environmental
  • Anticipatory planning for the Great Lake: a workshop report
  • Aménagement régional ; Amérique du Nord ; Canada ; Consommation ; Economie régionale ; Energie ; Environnement ; Etats-Unis ; Great Lakes ; Géographie de l'Amérique ; Loisir ; Ontario ; Pollution ; Pollution atmosphérique ; Transport
  • Changing national perspectives and the mapping of the Great Lakes between 1755 and 1795
  • (1755-1795) ; Amérique du Nord ; Carte ancienne ; Cartographie ; Great Lakes ; Histoire de la géographie ; Siècle XVIII
  • Cross-lake variation of physical limnological and climatological processes of Great Slave Lake
  • Bathymetry ; Canada ; Evaporation ; Heat balance ; Heat flow ; Lake ; Northwest Territories ; Seasonal variation ; Surface temperature ; Temperature ; Wind speed
  • -lake section of Great Slave Lake. The long-term objectives of this research include modeling the heat and mass exchange components, assessing potential climate change impacts, and quantifying the interannual variabilities. These analyses
  • This paper summarizes the cross-lake variations of meteorology, evaporation, heat fluxes, thermal response, heat content, and physical limnological processes based on 1998 summer and 1998/1999 winter over-lake measurement platforms within the main
  • are an important step in understanding the relationship between the physical regime and ecosystem responses in large northern lakes.
  • North American economic integration and industrial pollution in the Great Lakes region
  • Amérique du Nord ; Canada ; Economie régionale ; Equilibre économique ; Etats-Unis ; Great Lakes ; Impact ; Intégration économique ; Libéralisation ; Pollution ; Pollution industrielle ; Simulation
  • Canada ; Economic equilibrium ; Economic integration ; Great Lakes ; Impact ; Industrial pollution ; Liberalisation ; North America ; Pollution ; Regional economy ; Simulation ; United States of America
  • Late Pleistocene highstand and recession of a small, high-altitude pluvial lake, Jakes Valley, centra Great Basin, USA
  • Dating ; Geochronology ; Great Basin ; Lake ; Lake level ; Palaeoclimate ; Palaeolake ; Pleistocene ; United States of America
  • Datation ; Etats-Unis ; Great Basin ; Géochronologie ; Lac ; Niveau lacustre ; Paléoclimat ; Paléolac ; Pléistocène
  • The Great Lakes: an example of international cooperation to control lake pollution in Water pollution.
  • Amérique du Nord ; Canada ; Coopération internationale ; Etats-Unis ; Great Lakes ; Géographie humaine ; Lac ; Lutte contre la pollution ; Législation ; Polluant ; Pollution
  • Changing properties of snowpack in the Great Salt Lake basin, western United States, from a 26-year SNOTEL record
  • Années 1982-2007 ; Bassin-versant ; Donnée climatique ; Etats-Unis ; Great Salt Lake ; Lac ; Manteau nival ; Montagne ; Neige ; Ressource en eau ; Salinité ; Utah
  • Climatic data ; Lake ; Mountain ; Salinity ; Snow ; Snow cover ; United States of America ; Utah ; Water resources ; Watershed
  • Daily observations from automated snowpack telemetry (SNOTEL) stations from within the drainage basin of the Great Salt Lake over the period from 1982 to 2007 are analyzed. The major finding is a shift toward an earlier date of peak snow water
  • equivalent (SWE) by around 15 days. This suggests increased chances of late-summer water shortages especially when combined with rapid recent population growth. Less freshwater is likely to be available to flow into the Great Salt Lake, increasing its
  • Earliest Cucurbita from the Great Lakes, Northern USA
  • Biogéographie ; Datation C 14 ; Etats-Unis ; Great Lakes ; Holocène ; Paléo-écologie ; Plante cultivée ; Quaternaire ; Site archéologique ; Variabilité climatique
  • Archeological site ; Biogeography ; C 14 dating ; Climatic variability ; Cultivated plants ; Great Lakes ; Holocene ; Palaeo-ecology ; Quaternary ; United States of America
  • Directly dated Cucurbita from archaeological sites near Lake Huron expand the range and human usage of adventive, cultivated wild gourds or squash into the Great Lakes region, by 4000 C 14 yr BP. Although milder Hypsithermal climate may have been