نتایج جستجو برای: geomorphic landforms have special shapes
تعداد نتایج: 3145956 فیلتر نتایج به سال:
Introduction. The western and northwestern flanks of the Tharsis Montes volcanoes were covered by tropical mountain glaciers 125–220 million years ago [1], as evidenced by the morphology, stratigraphic relationships, and spatial distribution of landforms in the fanshaped deposits (FSDs) on each volcano [2-8] and by climate and glacial flow models that predict snow accumulation and ice flow in t...
introduction iran forms a relatively compact zone of active continental deformation resulted from the northward collision of arabia with eurasia during late cenozoic times, which is continuing to the present-day at a rate of 25 mm/yrs (from gps data). evidences of active tectonic in different parts of iran, has been studied and identified. the arid climate, low rates of erosion, and minimal veg...
Definition Geomorphology is the science that studies the origin and development of landforms and how those landforms combine to form landscapes. Landforms are shaped by geomorphological processes, many of which involve the weathering, erosion, transportation, and deposition of surface materials (rock, sediment) by gravity, ice, wind, or water. Both erosional and depositional landforms can be id...
Two ages are attributed to each circular lunar sea, the age of formation of the circular basin, probably by impact, and the age of the filling of the basin by lava-like effusions.Each lunar-sea surface displays a range of geomorphic indices. This is interpreted as being due to the presence of effusions of different ages on the surface of each sea. The landing sites of Apollo 11 and 12 have geom...
Aims & Backgrounds: Alluvial fans are one of the most prominent phenomena in fluvial geomorphology, which are found mostly on the mountain front. These landforms are affected by climate change and tectonic activity and record their effects. Therefore, we can use them to understand climate change and tectonic activities. The aim of this study was to determine the tectonic activity in the northe...
The natural environment has performed as determinative factor for vitality of the human habitations since the dawn of era, like habitations’ places and other human foundations which have been absolutely influenced by natural factors particularly geomorphological and geological factors. Geomorphological studies will evaluate environmental conditions of the chronological settlement ...
geomorphosites or special geomorphologic sites are new concepts which have entered tourism literature with anemphasis on special sites. basically, the goal for discussing such concepts is to identify landforms with specialimportance on understanding the geomorphologic structure of a region and their scientific, ecological, cultural,aesthetic, and economical values. generally, they are used for ...
In the summer of 2001, an intense thunderstorm in southeastern Caspian Sea triggered a catastrophic flood in the Madarsoo basin . Use of methods including high-resolution aerial photographs and satellite images interpretation, multi-date mapping, hydraulic calculations and field observations made possible the documentation of the geomorphic impacts on the Madarsoo River and its tributaries. Geo...
Fluvial landscapes are a result of lithospheric tectonic movement, climate evolution and surface processes. Existing evidence proves that regional deformation can be reflected by the fluvial landforms. The southern Alashan Block lies closest to northeastern Tibetan Plateau has become latest plateau outward expansion boundary. Yabrai Shan is located at intersection Plateau, Ordos Blocks, thereby...
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