نتایج جستجو برای: ndwi
تعداد نتایج: 418 فیلتر نتایج به سال:
The dynamics of fires in the territory Eastern Siberia (the Lena River basin middle reaches) has been studied with use materials from retrospective satellite imagery. dependence burnability forests local territories on level heat and moisture supply is shown. range index number area fires) for study under extreme drought conditions was revealed, confirmed by data. It shown that potentially aver...
Coastal zone management needs the prediction of changes in shoreline and coastal profiles, where fluctuation sea water level plays an essential role. Climate change human activities have accelerated fluctuation/falling levels lakes enclosed basins. Using satellite images cross-shore beach profiles at twelve monitoring stations along southern coasts Caspian Sea, effect rapid fall on nearshore mo...
ذخیره گاه جنگلی چهارطاق یکی از ذخیره گاه های مهم کشور، محل تلاقی چند رویشگاه و به عبارتی یک مجموعه ای از گونه های ارزشمند جنگل های زاگرس است که با احداث قرق طی حدود 30 سال، تنوع گونه ای آن حفظ شده است. علیرغم اهمیت این رویشگاه، متأسفانه در سال های اخیر شاهد بروز خشکیدگی قابل توجه درختان زبان گنجشک که از عناصر اصلی و غالب جنگل های زاگرس و این منطقه است، می باشیم. در این راستا و با هدف بررسی امکا...
Urbanization and expansion in each city of emerging countries have become an essential function Earth’s surface, with the majority people migrating from rural to urban regions. The various category characteristics emphasized great importance understanding creating suitable land evaluations future. overall objective this study is classify zone utilizing building height which estimated using Sent...
Boreal forest areas in the Russian Far East contained very large intact forests. This particular area is considered one of most productive and diverse forests boreal biome world, it also home to many endangered species. Zeya State Nature Reserve located at southern margin has rich fauna flora. However, region faced large-scale fires clearcutting for timber recently. The information disturbances...
Multispectral imagery provides unprecedented information on Earth system processes: however, data gaps due to clouds and shadows are a major limitation. Normalized-Difference Vegetation Index (NDVI) Water (NDWI) two spectral indexes employed for monitoring vegetation phenology, land-cover change more. Synthetic Aperture Radar (SAR) with its cloud-penetrating abilities can fill using coincident ...
Using remotely sensed data to estimate the biophysical properties of vegetation in woodlands is a challenging task due their heterogeneous nature. The objective this study was assess parameters different types (cork oak trees, shrubs and herbaceous vegetation) cork woodland through analysis temporal trends spectral indices (VIs). A seven-year database (from 2011 until 2017) situ observations co...
The research presents the results of remote monitoring blue-green algae Kuibyshev reservoir, leading to eutrophication reservoir. Multispectral images were taken by European Space Agency’s Sentinel-2 sensing satellite and processed using QGIS software. Satellite spectral indices. After several indices, three most informative ones selected: NDVI, NDWI SIPI. usage made it possible define boundari...
Deep learning approaches are applied for a wide variety of problems, they being used in the remote sensing field study and showed high performance. Recent studies have demonstrated efficiency using spectral indexes classification because accuracy F1 score increasing comparison with usage only RGB channels. The paper problem satellite images on EuroSAT dataset proposed convolutional neural netwo...
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