Triggering mechanisms and depositional rates of postglacial slope-movement processes in the Yosemite Valley, California
California ; Debris flow ; Earthquake ; Freeze-thaw cycle ; Glaciation ; Human impact ; Landslide ; Mass movement ; Postglacial ; Precipitation ; Quaternary ; Rainstorm ; Rockfall ; Sierra Nevada ; Slope ; Slope dynamics ; United States of America
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
Concept ; Europe ; Forecast ; Mass movement ; Natural hazards ; Terminology ; Thematic mapping ; Time
The first part of this paper gives the results of a study of the temporal dimensions of mass movements which was carried out by the European Centre for Geomorphological Risks in 1993. The time terminoloy was often inaccurate or incomplete, so
the A. has tried to clarify concepts such as the state and mode of activity, dormancy, the return time and the age of a movement. The second part sets out a few principles which may be helpful in applying these cartographic concepts in maps of various scales
Conserving the race: natural aristocracies, eugenics, and the U.S. conservation movement
(An agenda for Antiquity), reveals that complicity took place at a very highest social, political, and academic levels. Intense racism extending well beyond anti-Semitism was intimately linked to the early conservation movement in America.
The recurrence of large boulder movement in small watersheds of the Anza Borrego Desert, California
Boulders in three small drainage bains of the Anza Borrego Desert were studied. The precipitation intensity and critical velocity of water flow required to move the boulders, relicts of the Pleistocene, were calculated. As the rainfall intensities
After a geological and geomorphological description, the distribution in space and time of landslides which occurred in the surroundings of Cortina d'Ampezzo is presented. The type, activity, frequency and, when possible, the age of mass movements
have been outlined. Furthermore, special attention is focused on the landslides active at present which are reactivations of ancient movements. The results from the monitoring systems, which were installed in order to survey kinematic and hydrogeologic
parameters and define the movement rate, are shown.
Classification ; Coastal environment ; Earth surface processes ; Europe ; High mountain ; Human impact ; Land use ; Landslide ; Mass movement ; Model ; Plant cover ; Slope ; Volcanism
After a review of some analytical and conceptual models of slope evolution with the intervention of mass movements, a proposal is made of a series of indicators for the quantitative description of landscape evolution in relation to mass movements
. The ratio between landslide mobilisation rate and downwearing rate is proposed as a quantitative measure of the significance of mass movements in landscape evolution. A subdivision of European regions with respect to their susceptibility to landsliding
Late Quaternary climate changes and mass movement frequency and magnitude in the Cantabrian region, Spain
C 14 dating ; Cantabria ; Climatic variation ; Erosion rate ; Geochronology ; Holocene ; Landslide ; Mass movement ; Model ; Palynology ; Slope ; Spain
tested obtaining new sediment records and dating sixteen additional samples. The distribution and relative chronology of slope movements in a study area are presented. A correlation between occurence of mass movements and climate changes is proposed. Thhe
volumes affected by these movements in different periods have been calculated and rates have been obtained.
Big cities, big problems: reason for the elderly to move?
persons through the development of policy strategies. Discrepancies perceived with regard to several housing and neighbourhood features are studied. The accessibility of the neighbourhood is often seen as bad. Then moving plans are explained.
Dendroglaciological dating of a little ice age glacial advance at moving glacier, Vancouver Island, British Columbia
Datation dendrochronologique de l'avancée du glacier Moving au Petit Âge glaciaire, dans l'île de Vancouver. Après la période d'expansion, qui a permis au glacier d'atteindre sa limite maximale après 1818 ap. J.-C., le glacier a connu un recul
Labour mobility as a concept has different meanings in different contexts. It was often confined to a discussion of geographical movement between labour markets and the constraints imposed by the tenure position. But it captures only one aspect
of job movement. An alternative explanation of labour and housing market interactions is provided. After a review of the debates over the last 50 years, the involvement of employers in the housing market is examined. The interaction is studied
Concept ; Erosion ; Mass movement ; Slope ; Slope dynamics ; Slope evolution
The paper deals with the control over slope evolution exerced by gravitative downslope movement of rock debris. A concept of saturated debris flow is introduced; the saturated flow accounts for interruption in the slope denudation. Along
Evolution of the state geography standards in Rhode Island, one of many reform movements in the USA, each growing out of local responses, not decisions made in Washington. - (DWG)
Alluvial cone ; Arid area ; Biogeography ; Ecology ; Floodplain ; Glacial features ; Landscape ; Mass movement ; Microrelief ; Slope dynamics ; Soil properties ; Soil water ; Vegetation
are discussed in more detail for each of four distinct physical settings: temperate riparian environments, slopes affected by landslides and other forms of mass movement, desert alluvial fans, and non mountainous glaciated landscapes.
Aeolian features ; Aeolian transport ; Avalanche ; California ; Mass movement ; Model ; Roughness ; Soil properties ; United States of America ; Wind erosion ; Wind speed
The increase of soil mass flux with distance downwind, the fetch effect for wind erosion, has been observed and reported on since 1939. The model proposed incorporates 3 mechanisms: 1) the avalanching mechanism in which one particle moving downwind