نتایج جستجو برای: geomorphic landforms
تعداد نتایج: 3815 فیلتر نتایج به سال:
Two of the geomorphic Laws of Drainage Net Composition are discussed and it is shown that they are essentially abstract mathematical relationships that hold for any bifurcating system. Some of the geomorphic factors that determine the value of the characteristic coefficients that are obtained by application of the Laws to single nets are also discussed.
“Danxia landform” is a landform type originally defined in China, characterized by red-colored sandstones and steep cliffs, and developed through long-term erosion. In recent years, Danxia landforms have been receiving international attention, and six examples in China became a UNESCO World Natural Heritage in 2010. However, morphometric studies of Danxia landforms in China have been very limit...
“Urbanization” encompasses a diverse array of watershed alterations that influence the physical, chemical, and biological characteristics of streams. In this chapter, we summarize lessons learned from the last half century of research on urban streams and provide a critique of various mitigation strategies, including recent approaches that explicitly address geomorphic processes. We focus first...
The current investigation aims to identifying the land and water resources in some areas of Ismailiya governorate. This study covers soil geomorphological pedological characteristics including classification, capability evaluation assessment suitability for certain main crops. integration Remote Sensing (RS) Geographic Information System (GIS) techniques were used perform this work. The int...
We present a geomorphic map of Chukhung crater (38.47°N, 72.42°W) in central Tempe Terra, Mars. formed ~3.6–2.1 Ga, between the early Hesperian and Amazonian periods Mars' geologic history. It hosts dendritic networks wall valleys, broad floor mid- to late-Amazonian-aged debris-covered glaciers, moraine-like deposits, radial assemblage sinuous ridge landforms. explore origins landforms crater, ...
This study examines the role of surface geomorphic features in tree establishment at the alpine treeline in Glacier National Park, Montana, through the presentation of a multiscale, conceptual model of biogeomorphic relationships at alpine treeline. Empirical observations gathered through a multiscale field methodology over three summers serve as a base for the model. The model highlights the i...
Among the various processes that destroy lands, soil erosion is a complex and hazardous environmental process that constitutes a serious threat to preservation of soil and water resources in Iran and has inflicted its negative effects on the vital ecosystem with the intensified utilization of nature by human beings. The present descriptive and analytic research employed the PSIAC model to study...
In the Leh valley, apart from river Indus, several nalas have a great significance on development of number villages and settlement areas. The present work is an effort to illustrate pivotal role Stakmo nala in establishment village. study also seeks emphasis necessity basin management sustain natural resources for existence villages. Various problems related with city its adjacent area been st...
Transverse sand dunes located within the supratidal zones of beaches are a significant geomorphic feature along sand-dominated coasts worldwide and generated by strong alongshore winds in areas high sediment availability. present South African coast, these known to migrate dynamically response wind forcing. However, detailed dynamics individual dune systems same coastal stretch have not been co...
Most geomorphic transport laws proposed to date are local in character, i.e., they express the sediment flux at a point as a function of the elevation gradient or curvature or other geomorphic quantities at that point only. We argue that non-local constitutive laws, in which the flux at a point depends on the conditions in some larger neighborhood around this point in space and/or time, present...
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