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Catastrophic rock avalanche 3600 years BP from El Capitan, Yosemite Valley, California
  • Catastrophic rock avalanche 3600 years BP from El Capitan, Yosemite Valley, California
  • California ; Eboulement ; Etats-Unis ; Glissement de terrain ; Géomorphodynamique ; Holocène ; Risque naturel ; Sismicité ; Yosemite Valley
  • The morphology and age of a rock avalanche deposit beneath El Capitan in Yosemite Valley indicates a massive prehistoric failure of a large expanse of the southeast face. The coincidence of ages, combined with the fact that the most recent (AD 1872
  • ) Owens Valley fault rupture triggered numerous large rock falls in Yosemite Valley, suggest that a large magnitude earthquake (≥M7.0) centered in the south-eastern Sierra Nevada may have triggered the rock avalanche. If correct, the extreme hazard posed
  • by rock avalanches in Yosemite Valley remains present and depends on local earthquake recurrence intervals.
  • [b1] Yosemite National Park Service, Resources Management and Science, El Portal, Etats-Unis
Vegetation change and park purposes in the high elevations of Yosemite National Park, California
  • Vegetation change and park purposes in the high elevations of Yosemite National Park, California
  • nature ; Sierra Nevada ; Yosemite National Park
  • L'A. a photographié à nouveau 59 vues prises par G. K. Gilbert au début du siècle dans le Yosemite National Park entre 2 400 m et 3 400 m d'altitude. La comparaison des paires de photographies permet d'évaluer l'évolution du paysage et de la
Rock fall dynamics and deposition : an integrated analysis of the 2009 Ahwiyah Point rock fall, Yosemite National Park, USA
  • Rock fall dynamics and deposition : an integrated analysis of the 2009 Ahwiyah Point rock fall, Yosemite National Park, USA
  • California ; Date 2009 ; Eboulement ; Etats-Unis ; Géomorphodynamique ; Géophysique ; LiDAR ; Montagne ; Photo-interprétation ; Risque naturel ; Sismique réflexion ; Yosemite National Park
  • The AA. analyzed a combination of airborne and terrestrial LiDAR, high-resolution photography, seismic, and acoustic data in order to gain insights into the initiation, dynamics, and talus deposition of a complex rock fall in eastern Yosemite Valley
  • [b3] National Park Service, Yosemite National Park, California, El Portal, Etats-Unis
  • [b2] US Geological Survey, Menlo Park, California, Etats-Unis
Late Wisconsin paleoecologic record from Swamp lake, Yosemite National Park, California
  • Late Wisconsin paleoecologic record from Swamp lake, Yosemite National Park, California
  • A 7.86 m sediment core from Swamp Lake in Yosemite National Park, provides a continuous record of environmental change over the last ca. 16,000 yr, as inferred from pollen, macrofossil, and microscopic charcoal analyses. The core stratigraphy
Progressive failure of sheeted rock slopes : the 2009–2010 Rhombus Wall rock falls in Yosemite Valley, California, USA
  • Progressive failure of sheeted rock slopes : the 2009–2010 Rhombus Wall rock falls in Yosemite Valley, California, USA
  • California ; Dynamique de versant ; Eboulement ; Etats-Unis ; Falaise ; Fracture ; Granite ; LiDAR ; Mécanique des roches ; Télédétection ; Versant ; Yosemite National Park
  • The AA. present high-resolution photography, video, and laser scanning data that document spatial and temporal patterns of a 15-month-long sequence of at least 14 rock falls from the Rhombus Wall, a sheeted granitic cliff in Yosemite Valley
  • [b1] National Park Service, Yosemite National Park, California, El Portal, Etats-Unis
  • [b3] U.S. Geological Survey, Landslide Hazard Program, California, Menlo Park, Etats-Unis
Old Mammoth.
  • A historical pictorial of the Mammoth Lakes Area just East of Yosemite National Park and including scenes of mining, ranching, logging, transportation, and landscapes. Most pictures pre-1940. Text and photographes give a feeling for life
National parks, the American experience.
  • National parks, the American experience.
  • Aperçu d'ensemble sur l'aménagement de parcs nationaux respectant l'état primitif sur le territoire des Etats-Unis, selon le voeu de l'explorateur George Cattin, en 1832. Depuis la vallée de la Yosemite (1864) et celle de la Yellowstone (1872), dans
Expert versus machine : a comparison of two suitability models for emergency helicopter landing areas in Yosemite National Park
  • Expert versus machine : a comparison of two suitability models for emergency helicopter landing areas in Yosemite National Park
  • Apprentissage automatique ; California ; Etats-Unis ; Etude comparée ; Hélicoptère ; Localisation ; Modèle expert ; Parc national ; Risque ; Système d'information géographique ; Urgence ; Yosemite ; Zone d'atterrissage
  • California ; Comparative study ; Geographical information system ; Location ; National park ; Risk ; United States of America
  • Les AA. cherchent à identifier les zones d’atterrissage des hélicoptères susceptibles d’exister dans le Parc national de Yosemite à l’aide des deux approches que sont le système expert et l’apprentissage automatique. Ils expliquent que les deux
Triggering mechanisms and depositional rates of postglacial slope-movement processes in the Yosemite Valley, California
  • Triggering mechanisms and depositional rates of postglacial slope-movement processes in the Yosemite Valley, California
  • This paper examines information collected from 395 reports of slope-movement events during about the past 150 years in Yosemite National Park, central Sierra Nevada, California, to identify the most prevalent types of slope movements
  • [b1] U.S. Geological Survey, National Center, MS 922, Reston, VA 22092, Etats-Unis
The topographic relative moisture index: an approach to soil-moisture assessment in mountain terrain
  • Arizona ; Cycle de l'eau ; Cyprès ; Eau du sol ; Ecoulement ; Environnement ; Etats-Unis ; Forêt ; Géographie physique ; Humidité du sol ; Indice topographique d'humidité relative ; Montagne ; Versant ; Yosemite National Park
  • communauté (forêt du Yosemite National Park).
  • PARKER, A. J.
No holier temple : response to Hodel's Hetch Hetchy proposal
  • California ; Conflict ; Environment ; Natural park ; Nature conservation ; Resource management ; United States ; Water resource planning
  • The only major dam inside a U.S. national park was built in Yosemite National Park in 1913 to provide water for the city of San Francisco. it has since become a symbol of environmental outrage, yet when a high government official proposed in 1987
Wildfire in the West's woods : fire policy in the wake of the fires of 1988
  • Ecologie ; Etats-Unis ; Etats-Unis de l'Ouest ; Feu ; Forêt ; Gestion des ressources ; Géographie de l'Amérique ; Parc national ; Parc naturel ; Protection de la nature
  • Discussion of a recent fire policy of let it burn , which in 1988 allowed naturally caused fires to spread in Yellowstone and Yosemite Parks. - (DWG)
Relationship between form, function, and distribution of two Arctostaphylos species (Ericaceae) and their putative hybrids
  • ; Xérophyte ; Yosemite National Park
Large-scale monitoring of air pollution in remote and ecologically important areas
  • , the Tatras, Retezat, and Bucegi ranges) in Europe; the Sierra Nevada (including Sequoia, Kings Canyon and Yosemite National Parks), the San Bernardino Mountains, the White Mountains, and Joshua Tree National Park in California; the Columbia Rivers Basin
National Parks in Hawaii: local interests and National Park policy in International experience with national parks and related reserves.
  • National Parks in Hawaii: local interests and National Park policy in International experience with national parks and related reserves.
Influence of rock mass strength on the erosion rate of alpine cliffs
  • Nevada between Yosemite National Park and Lake Tahoe. The AA. found good correlation between rockwall recession rate determined for 40 alpine cliffs and SMR which is best characterized by an exponential decrease in erosion rate with increasing rock mass
Taking schools to the parks : integrated studies and the educational role of New Zealand national parks in New Zealand national parks.
  • Taking schools to the parks : integrated studies and the educational role of New Zealand national parks in New Zealand national parks.
National Parks and nature reserves in Israel in International experience with national parks and related reserves.
  • National Parks and nature reserves in Israel in International experience with national parks and related reserves.
Iran: National Park system development in International experience with national parks and related reserves.
  • Iran: National Park system development in International experience with national parks and related reserves.
Colombian National Parks and related reserves: research needs and management in International experience with national parks and related reserves.
  • Colombian National Parks and related reserves: research needs and management in International experience with national parks and related reserves.