نتایج جستجو برای: prevailing wind direction maps
تعداد نتایج: 347856 فیلتر نتایج به سال:
Rural architecture reflects the integration of architecture with the environment and culture. This kind of relation has been considered as the main factor which brings about diversity in the form of residential architecture in different rural areas. In cold and mountainous climates of Iran, factors such as climate, land type, livelihoods have made differences in architectures. But this fact is ...
This paper presents a new ocean wind vector measurement technique that uses the combined passive and active microwave measurements respectively from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) and the Precipitation Radar (PR). The wind speed is inferred by TMI over a wide swath that includes the narrower PR swath. The PR scans cross-track ± 18°; and near the swath edge...
Wind turbines are subject to variable aerodynamic loads and extreme environmental conditions. Wind turbine components fail frequently, resulting in high maintenance costs. For this reason, gearbox condition monitoring becomes important since gearboxes are among the wind turbine components with the most frequent failure observations. The major challenge here is the detection of faults under the ...
What are the effects of snow fence variables on wind patterns, and geometry and volume of snow collected in drifts? This question arose from a need to capture winter’s blowing snow to improve water supply during a drought and to protect critical areas from blowing snow. Last year, during the first phase of this project, various powders were tested to find which would closely replicate snow in a...
The operation of sand transport by erosive winds and its sedimentation around the obstacles such as plants leads to the appearance of the eco-geomorphologic phenomenon of nebka dunes in dry seasons of Golestan province. This study aims to identify the physicochemical characteristics of nebka sediments and compare its results with adjacent lands. Hence, the grain size distribution and morph...
In recent years, due to the increased population, urbanization and changes in human consumption patterns, urban, industrial and agricultural soils have been exposed to various pollutants such as heavy metals. The objective of this research was to identify hotspots of Pb by using global and local Moran Indices in urban and suburban soils of Kashafrood catchment. A total of 261 surface soil sampl...
Introduction: The location of sanitary landfills is one of the most important environmental issues in cities. If the design of landfills is not appropriate, it will threaten human health. This study aimed to detect a suitable location for a landfill in Ilam, Iran. Materials & Methods: A questionnaire and consultation with experts were used to conduct the research. For this purpose, three ma...
in this paper, we give a characterization of strongly jordan zero-product preserving maps on normed algebras as a generalization of jordan zero-product preserving maps. in this direction, we give some illustrative examples to show that the notions of strongly zero-product preserving maps and strongly jordan zero-product preserving maps are completely different. also, we prove that the direct p...
A sensitive processing method for extracting the wind direction from SAR (synthetic aperture radar) images is presented. We transfer SAR images to the image spectra using two-dimensional FFT (fast Fourier transform) and take the integral of the image spectra between the wave length 400 m and 800 m, which is high end containing wind direction signatures in Lband SAR. From this and a reference si...
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