Tephra layers near Glacier Peak in the NorthCascadeRange provide limiting dates for four periods of alpine glacier advance. Field relations suggest that late Wisconsin alpine glaciers last advanced prior to the eruption of tephra layers from
Glacier Peak about 11.250 yr B.P. Late Wisconsin deglaciation in the central NorthCascades was complete prior to the Glacier Peak tephra eruptions. Glaciers again expanded in the early Holocene about 8400-8300 yr B.P. Soil formed in alpine meadows during
Etude des communautés végétales de la zone alpine du NorthCascadesRange, à partir d'un réseau de 209quadrats variant entre 150 et 1500m de surface. Le passage d'un climat océanique à un climat continental, d'ouest en est, modifie profondément la
saison d'accumulation sont très corrélées avec l'altitude du seuil de glaciation dans la NorthCascadeRange, alors que la corrélation du seuil de glaciation avec l'altitude de l'isotherme 0C en juillet, déterminé par le calcul des vitesses d'érosion en
Les isoglaciohypses décrivant la configuration du seuil de glaciation dans le Whashington, sont à peu près parallèles à la crête de la CascadeRange. Le gradient du seuil, dans les Cascades est de 7 à 25m par km. Les précipitations moyennes de la
The upper Enchantment Lakes Basin in the NorthCascadeRange of Washington displays two moraine belts, each recording an episode of glacier advance after the end of the last glaciation. The inner belt, the Brynhild, 0.1 to 0.5 km beyond existing
Jég-és jelenkori tüzhanyok a Cascade-hegységben II. Kialudt (?), szunnyado (?), mükodo (?) tüzokjadok. (Pleistocene and Holocene volcanoes in the Cascade Mountains II. Extinct (?), dormant (?), active (?) volcanoes)
Activité volcanique ; CascadeRange ; Etats-Unis ; Gphy ; Géographie de l'Amérique ; Géomorphologie volcanique ; Holocène ; Pléistocène ; Saint Helens Mount ; Volcan ; Volcanisme
From the 17 big volcanoes of the Cascade Mountains 6 are certainly active and 4 are certainly dormant. The others are somewhere between these extremes. The Cascade Mountains is a unique volcanic range with magma sources from colliding plates (acidic
Erosional unloading, hillslope geometry, and the height of the CascadeRange, Washington State, USA
Altitude ; CascadeRange ; Erosion différentielle ; Etats-Unis ; Géomorphogenèse ; Géophysique ; Isostasie ; Montagne ; Mouvement vertical ; Pente de versant ; Système d'information géographique ; Tectonique ; Topographie ; Washington State
The AA. determine the maximum extent to which differences in isostatic compensation from relief creation contribute to the south-to-north increase in peak altitudes in the CascadeRange of Washington State. The influences of differential valley
Influence of a glacial buzzsaw on the height and morphology of the CascadeRange in central Washington State, USA
CascadeRange ; Cirque glaciaire ; Climat ; Corrélation ; Erosion glaciaire ; Etats-Unis ; Glacier ; Modèle numérique de terrain ; Topographie ; Washington State
Exploration des liens entre le climat et la topographie fixés par les effets physiques de l'érosion glaciaire à long terme sur la hauteur et la morphologie de la CascadeRange au centre de l'Etat de Washington.
A hydrogeochemical model for stream chemistry, CascadeRange, Washington, U.S.A.
Presentation of a simple mixing model which demonstrates that chemical variations in Cascade surface waters reflect flow from three general zones : alpine areas, forested colluvial slopes, and seasonally saturated areas.
Jég-és jelenkori tüzhanyok a Cascade-hegységben I. A Mount St. Helens 1980. évi kitorése. (Pleistocene and Holocene volcanoes in the Cascade Mountains. I. Eruption of Mount St. Helens in 1980)
CascadeRange ; Catastrophe ; Eruption volcanique ; Etats-Unis ; Géographie physique ; Préhistoire ; Saint Helens Mount ; Volcan ; Volcanisme ; Washington State
Coevolution of hydrology and topography on a basalt landscape in the Oregon CascadeRange, USA
The aim of this study is to investigate the co-evolution of streamflow generation mechanisms, hydrograph characteristics, drainage network development, and landscape dissection on a young basalt landscape in the Oregon CascadeRange. The AA. seek
[b1] Dep. of Geography and Earth Sciences, Univ. of North Carolina, Charlotte, Etats-Unis
Stratigraphy and chronology of Quaternary deposits of the Puget Lowland and Olympic Mountains of Washington and the Cascade Mountains of Washington and Oregon in Quaternary glaciations in the Northern Hemisphere.
CascadeRange ; Datation ; Etats-Unis ; Géographie de l'Amérique ; Holocène ; Montagne ; Olympic Mountain ; Oregon ; Pléistocène ; Puget Lowland ; Quaternaire ; Quaternaire zones moyennes ; Stratigraphie ; Washington State
Postglacial vegetation and climate of the CascadeRange, Central Oregon
In this paper, the AA. extend the coverage of paleoecologic sites in the CascadeRange by reporting on pollen records from Indian Prairie, in central Oregon. These data disclose the vegetational and climatic history of middle and high elevations
A field-based model of the effects of landcover changes on daytime summer temperatures in the NorthCascades
of Mount Adams, Washington. These sensors operated for 60 days, from July 20, 2008, through September 17, 2008, in snow-free conditions across a range of elevations. Using field data and a previously developed proxy dataset for stand height and density
California ; CascadeRange ; Etats-Unis ; Forêt ; Géographie de l'Amérique ; Image radar ; Montagne ; Pacific Mountain system ; Rocky Mountains ; Seasat ; Télédétection ; Volcanisme
Cette image SEASAT couvre une région volcanique en Californie du Nord, faisant partie de la chaîne des Cascades. Repérage des éléments composant le paysage.
Range shape and range elongation of North American trees
Biogeography ; Climatic zone ; Ecology ; North America ; Plant species ; Regression analysis ; Spatial distribution ; Taxonomy ; Topography ; Tree
The A. investigates the relative range elongation, with respect to maximum north-south distance and maximum east-west distance, of 269 North American tree species. These data provide evidence that species with smaller ranges tend to be elongated
north-south and species with larger ranges tend to be elongated east-west. This pattern is likely a result of species with small ranges being limited by local north-south-trending topography and species with large ranges being limited by major east-west
-oriented climatic zones, and is not merely an artifact of Rapoport's rule. Now, an explicit measure of range shape exists to compare to other biogeographical characteristics.
Forest roads and geomorphic process interactions, CascadeRange, Oregon
A major flood in February 1996 triggered more than 100 geomorphic features affecting forest roads in a 181 km2 study area in the western CascadeRange, Oregon. Eight types of features, including mass movements and fluvial features, were mapped