نتایج جستجو برای: topographic slope

تعداد نتایج: 65627  

2013
F. Falcini E. Foufoula-Georgiou V. Ganti C. Paola V. R. Voller

[1] Models for the overall topographic evolution of erosional and depositional systems can be grouped into two broad classes. The first class is local models in which the sediment flux at a point is expressed as a linear or nonlinear function of local hydrogeomorphic measures (e.g., water discharge and slope). The second class is nonlocal models, where the sediment flux at a point is expressed ...

2016
William Headlee William Landon Headlee Philip M. Dixon Steven E. Jungst Kenneth J. Moore

Hybrid poplars have demonstrated high productivity as short rotation woody crops (SRWCs) in the U.S. Midwest, and the hybrid aspen ‘Crandon’ (Populus alba L. × P. grandidenta Michx.) has exhibited particularly promising yields across topographic positions (including sloping marginal lands) in Iowa. However, a key obstacle for landowner acceptance of SRWCs is the lack of economic returns early i...

رضایی, خلیل, شیرانی, کوروش, عرب عامری, علیرضا,

In this study, Vanak catchment because of high sensitivity to landslide was selected. Then with geological, topographic maps and field survey, Landslide hazard map was prepared using GPS as dependent variables. A total of 110 landslides were mapped in GIS out of which 77 (70%) locations were chosen for the modeling purpose and the remaining 33 (30%) points were used for the model validation. Th...

Journal: :ISPRS Int. J. Geo-Information 2017
Hone-Jay Chu Min-Lang Huang Yu-Ching Tain Mon-Shieh Yang Bernhard Höfle

Coral walls protect vegetation gardens from strong winds that sweep across Xiji Island, Taiwan Strait for half the year. Topographic parameters based on light detection and ranging (LiDAR)-based high-resolution digital elevation model (DEM) provide obvious correspondence with the expected form of landscape features. The information on slope, curvature, and openness can help identify the locatio...

Journal: :Journal of the Japan Society of Engineering Geology 2006

2013
Pedro Monterroso Neftalí Sillero Luís Miguel Rosalino Filipa Loureiro Paulo Célio Alves

Most studies dealing with home ranges consider the study areas as if they were totally flat, working only in two dimensions, when in reality they are irregular surfaces displayed in three dimensions. By disregarding the third dimension (i.e., topography), the size of home ranges underestimates the surface actually occupied by the animal, potentially leading to misinterpretations of the animals'...

2009
P. E. Miller

Roads and railways are founded on earthwork structures such as embankments, which can be susceptible to slope instability and failure, with serious economic and safety implications. Existing approaches to earthwork condition appraisal are labour-intensive and hazardous. While the increasing availability of high resolution geospatial data offers improved opportunities for remote and efficient sl...

Extended abstract 1- Introduction Gully erosion is one of the most important sources of sediment in the watersheds and a common phenomenon in semi-arid climate that affects vast areas with different morphological, soil and climatic conditions. This type of erosion is very dangerous due to the transfer of fertile soil horizons, and the reduction of water holding capacity also is a factor for s...

Journal: :Academic journal of science and technology 2022

With the rapid development of economy and electronic information industry, demand for electricity is getting higher. As a basic project, reasonable point layout power grid becoming more important. Topographic elements are key factors affecting layout. However, actual terrain complex changeable, so it urgent to quantify all kinds topographic provide reference Based on three-dimensional GIS techn...

2010
R. Bou Kheir

Accurate information about organic/mineral soil occurrence is a prerequisite for many land resources management applications (including climate change mitigation). This paper aims at investigating the potential of using geomorphometrical analysis and decision tree modeling to predict the geographic distribution of hydromorphic organic landscapes in unsampled area in Denmark. Nine primary (eleva...

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