نتایج جستجو برای: flood and snow melting
تعداد نتایج: 16842635 فیلتر نتایج به سال:
Dielectric elastomer is one of the new types electronic materials that have both drive ability and electric generating capacity. In this research, fundamental tests were performed to evaluate abilities of dielectric elastomer. As the result, it was found that dielectric elastomer had very efficient drive ability and electric generating capacity, and that it was applicable to both slow and high ...
In Siberia, floods are one of dangerous natural disaster. The danger varies under the climatic and anthropogenic changes, as well socio-economic development. aim was to study current position problems associated with flood hazard. A key understanding situation is geographical statistical analysis for period climate change (1985-2019). Such analyzes addresses following aspects: genesis recurrenc...
Taking northern Xinjiang, China, as an example, this study first compares the standard MODIS Terra and Aqua snow cover classifications, and then compares the accuracy of the standard MODIS daily and 8-day snow cover products with the new daily and multi-day snow cover combination of MODIS Terra and Aqua observations using in situ measurements. Under clear sky in both products, the agreement of ...
Capabilities and methods for snow mapping in mountainous areas using the Advanced Synthetic Aperture Radar (ASAR) on board of ENVISAT were investigated. For algorithm development the backscattering signatures of snow covered and snow free surfaces in Alpine valleys and on mountain slopes were studied with ASAR data of different look angles and polarizations in comparison with field measurements...
Amphibolite rocks with mylonitic texture exposed in the NE of Yan- Cheshmeh village (SE of Zayandeh-Rud Lake). Mineralogy of rocks include amphibole, plagioclase, quartz, rutile, clinozoesite, chlorite, titanite, biotite and opaque. Amphiboles are seen as fish. Basic igneous rocks are protolith of the amphibolites that have subalkaline nature. Ni (299-370 ppm), Cr (1169-1900 ppm) and SiO2 (44.9...
This paper describes a work plan for the evaluation of the capabilities and performance of Medium Resolution Imaging Spectrometer (MERIS) data for monitoring snow covered land surfaces, specifically in the boreal forest belt. The performance of MERIS over snow in the northern latitudes is mainly estimated by comparison of time series derived from MERIS surface reflectance against values derived...
Main aim of the work assumed recognition of physicochemical changes in snowpack occurring during the melting period. Properties of snow cover had been identified at two sites in Western Sudetes mountains (860 and 1228 m asl) in SW Poland since the end of January, and monitored until the disappearance of snow in late Spring. Snow pit measurements and sample collection at both sites were made fol...
One of the clearest predictions from the IPCC is that we can expect much less snow cover due to global warming in the 21st century, especially in the lower alpine areas. In alpine ecosystems, snow accumulation in depressions gives rise to distinct snow-bed vegetation types, assumed to play a key role in ecosystem function. A delayed plant phenology yields high-quality forage in late summer for ...
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