Arid land;Arid environment ; Climatic variation ; Dune ; Earth surface processes ; Eolian features ; Greenhouse effect ; United States
A large amount of recent and current research in arid lands geomorphology suggests that landform development is episodic, with climatic changes in timescales of decades to centuries providing an overable process framework. This article provides
The nature and geomorphological relationships of earth hummocks (Thufa) in Iceland
Several hundred hummocks (thufa) from a variety of geomorphological environments in north and south Iceland have been examined. The general conclusion is that thufa form within limits determined by soil grain size, soil depth, local climate, depth
of soil water table and geomorphological environment and they must be seen as part of the continuum of processes acting on vegetated Icelandic slopes.
Cenozoic climatic change in southern Africa : the evidence from geomorphology, 1967-1996, a personal view
Cenozoic ; Climatic variation ; Geomorphology ; Karst ; Palaeogeography ; South Africa
of karst evidence is stressed. Further evidence should be sought in ecotone sites which respond sensitively to climatic changes. However, the preservation of evidence is often fortuitous so correlation from one region to another is difficult. - (AJC)
Alps (The) ; Altitude ; Climate ; Climatic change ; Climatic warming ; Human impact ; Italy ; Mountain ; Tree line
In this study, the AA. describe landscape-scale patterns of the upper boundaries of forest in 5 valleys in the inner and peripheral regions of the Alps. The aim is to describe present treeline altitudes according to climatic, geomorphologic
and anthropogenic factors in order to select sites appropriate to the study of climatic treeline dynamics. Moreover, the AA. want to check whether or not human disturbance has a different impact on treeline altitude in the study sites.
as a result of the direct effects of warming, as a consequence of other related climatic changes (e.g. précipitation change) and as a result of climatically moderated changes in major geomorphologically significant variables (e.g. vegetation cover
In the last two decades concern with global environmental change has brought the role of anthropogeomorphology into sharper focus. Global warming, if it occurs, will have important implications for many geomorphological processes and phenomena
Argentina ; Climate ; Geomorphology ; La Pampa ; Nutrient ; Pampa ; Phosphate ; Semi-arid area ; Soil ; Soil erosion ; Vegetation
Argentine ; Climat ; Domaine semi-aride ; Erosion des sols ; Géomorphologie ; La Pampa ; Nutriment ; Pampa ; Phosphate ; Sol ; Végétation
The purpose of this work was to find out the role of geomorphology and climate for available P to plants. It will be analysed by splitting it up into P reserve and P availability. Objects were units of different soil sequences.
Petit volume synthétique qui présente les océans sous leurs aspects physiques : les eaux et le climat, les fonds et le littoral, la vie dans l'océan. - (FC)
R. RUHE: Climaticgeomorphology and fully developed slopes: a discussion
RUHE (1975) has attempted to show that fully developed slopes of similar form occur in different regions despite climatic variations. He has however failed to support this suggestion with adequate evidence. Some comments to this effect already
The geomorphology of Australia's fluvial systems: retrospect, perspect, and prospect
Arid area ; Australia ; Climatic variation ; Flood ; Fluvial processes ; Geochronology ; Quaternary ; River management ; Stratigraphy ; Stream flow
Review of the study and geomorphology of Australia's fluvial systems by offering comment on the development, concerns and future of the subject. Development of the idea of a distinctive geomorphology of Australian fluvial systems that often contrast
and riverine response to secular trends in climate. Consideration is also given to present deficiencies in research and to future priorities.
Climatic variation ; Forecast;Prediction ; Geosystem ; Global change ; Model ; Palaeo-environment ; Periglacial features ; Permafrost
This paper suggests that the main task of periglacial geomorphology : remains that of developing a better knowledge of existing periglacial geosystems. This includes and intensified research on a sequence of four topics : 1) on periglacial processes
, particularly on a physical basis; 3) on the relationship between processes and landforms; 3) on the information value of fossil periglacial landforms on paleo-climatic reconstructions and 4) on the prediction of future developments in periglacial areas
The use of historical data and artifacts in geomorphology
Aerial photography ; Archaeology ; Climatic data ; Geomorphology ; Historical geography ; Hydraulic works ; Land use ; Litter ; Topographic map
Investigations in geomorphology and environmental management can be greatly enhanced by the use of of historical techniques. The approach is useful for tracing human-induced changes as well as for those occurring naturally. Several primary
will be investigated. The degree of climatic and tectonic influence on the morphogenesis during the transitional period between the Pliocene and Pleistocene will be discussed.
This paper gives an overwiev about the geomorphological effects of climatic changes in the Carpathian Basin during the late Miocene, early Pleistocene period. In this period the climate changed into a semi-desert or an almost desert one which
is explained and justified by geomorphological evidences and mammal remnants by the author. - (JS)
The aim of this review is to introduce some key examples showing the role of Earth surface processes, the traditional subject of geomorphology, within the interacting Earth system. The paper considers three examples of environmental systems in which
geomorphology plays a key role: (1) links between topography, tectonics, and atmospheric circulation; (2) links between geomorphic processes and biogeochemical cycles; and (3) links between biological processes and the Earth’s surface. In conclusion, key
Geomorphology of the eastern coast of the Dead Sea, Jordan
Applied geomorphology ; Climatic variation ; Coastal environment ; Coastal geomorphology ; Dead Sea ; Delta ; Drainage network ; Fault ; Jordan ; Karst ; Mass movement ; Natural hazards ; Sea level ; Sedimentation ; Taffoni ; Terrace
This paper aims to investigate the geomorphological characteristics of the eastern coast of the Dead Sea as influenced by structural instability and climatic changes. Aerial photos and map analyses served to distinguish main morphological features
and slope classes, whereas geomorphological changes along the coast, mainly those developed by the declining of the Dead Sea levels were located and examined in the field. Also attention was paid to dimensions and development of particular features