نتایج جستجو برای: slope direction and elevation
تعداد نتایج: 16851892 فیلتر نتایج به سال:
The effect of mountainous regions with high elevation on hourly timescale rainfall presents great difficulties in flood forecasting and warning areas. In this study, the rainfall–elevation relationship regional scale is investigated using fields three storm events simulated by Weather Research Forecasting (WRF) model. From relationship, a parameterized model that can estimate spatial field real...
Plot data from the USFS FIA program could be combined with terrain variables to attempt to explain how terrain characteristics influence forest growth, species composition, productivity, fire behavior, wildlife habitat, and other phenomena. While some types of analyses using FIA data have been shown to be insensitive to precision of plot locations, it has been suggested that terrain-based model...
This work proposes an innovative app navigation path-planning problem exploration rovers by including terrain characteristics. The objective is to enhance the typical 2D arithmetical cost function by adding 3D information computed from the laser-scanned terrain such as terrain height, slopes, shadows, orientation and terrain roughness. This paper describes the algorithm developed by UPM and GMV...
A series of soil conservation measures have been carried out to reduce soil loss on the Loess Plateau of China since 1950s, and the biologic measures were implemented according to topographic factors such as slope and elevation; therefore, the changes in topographic factors of land use can indicate the effects of the biologic measures. The objectives of this study were to (i) analyze the land u...
Deep-Sea Fish Distribution Varies between Seamounts: Results from a Seamount Complex off New Zealand
Fish species data from a complex of seamounts off New Zealand termed the "Graveyard Seamount Complex' were analysed to investigate whether fish species composition varied between seamounts. Five seamount features were included in the study, with summit depths ranging from 748-891 m and elevation from 189-352 m. Measures of fish species dominance, rarity, richness, diversity, and similarity were...
The maps of potential flooding areas can be the appropriate tool for urban planning in the future. In this research, potential flooding areas criteria viz. the urban land use, distance of river, elevation, slope and ground water level were considered. The weight of decision criteria were evaluated by paired comparison matrix. The final potential flooding map was divided to five different risk c...
The ARC/INFO 6.1 Grid system was applied in the 170 km large Henley Dam and the 19.4 km large Cedara basins, KwaZulu Natal, South Africa, to determine hydrological and geomorphological parameters required to simulate water quantity and water. A sensitivity analysis was carried out to evaluate the effects of the grid mesh size on basin slope by producing a number of grids with grid mesh sizes ra...
LIght Detection And Ranging (LIDAR) for terrain and land surveying has contributed to many environmental, engineering and civil applications. However, the analysis of Digital Surface Models (DSMs) from complex LIDAR data is still challenging especially for highly sloped landscapes. Commonly, the first task to investigate LIDAR data point clouds is to separate ground and object points as a prepa...
To investigate the toppling displacement evolution characteristics of anti-dip rock slopes, Xiaodongcao-Zhengjiadagou bank slope is taken as an engineering case, and firstly, geological geometric distribution are obtained by superimposing lithology, slope, elevation raster layers through ArcGIS, partition with largest area Lower Triassic Daye Formation, bottom elevation, medium slope; based on ...
Abstract The impacts of climate change and human activities on vegetation dynamics have attracted wide attention, especially in sensitive vulnerable areas such as the Qingzang Plateau China. In this region, a series ecological restoration projects been launched while effectiveness these requires evaluation further improvements. Remote sensing with high temporal resolution spatial coverage is an...
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