نتایج جستجو برای: landsat8
تعداد نتایج: 121 فیلتر نتایج به سال:
In this paper, RS, GIS and GPS technologies are used to interpret the remote sensing images of north shore Qinghai Lake from 1987 2014 according inversion results vegetation coverage (FVC), albedo, land surface temperature (LST), soil moisture (WET) other major parameters after image preprocessing, such as radiometric correction, geometric correction atmospheric correction. On basis, decision t...
The aerosol optical depth (AOD), retrieved by satellites, has been widely used to estimate ground-level PM2.5 mass concentrations, due its advantage of large-scale spatial continuity. However, it is difficult obtain urban-scale pollution patterns from the coarse resolution retrieval results (e.g., 1 km, 3 or 10 km) at present, and little research conducted on concentration high remote sensing d...
Urban ventilation corridors serve as channels of fresh air flow between the city and suburbs, helping to improve wind thermal environments comfort. However, owing limited number weather stations, it is impossible quantitatively reveal effective effect range urban on comfort at scale 100 × m, which optimal for corridors. In this study, we integrated building data, European Centre Medium-Range fo...
The prediction of geothermal high-temperature anomalies along the plateau railway will be helpful in construction project and its later management. Taking Sichuan–Tibet as study area based on Landsat8 thermal infrared images, map data, measured data regarding cause distribution anomalies, through correlation analysis, we selected six impact factors including LST, combined entropy geological for...
Abstract Evapotranspiration in the hydrologic cycle realizes energy and water transport atmosphere. differences concerning land-use types provide data for studying evapotranspiration of river basins. To investigate reservoir under artificial regulation, we selected basin Sanmenxia Reservoir as study area. Data sources are two-period Landsat8 OIL_TIRS remote sensing images during growing season ...
As a particular type of alpine glacier, debris-covered glaciers are essential for local water resources and glacial disaster warnings. The Eastern Tomur Peak Region (EPTR) is the most concentrated glacier in Tien Shan Mountain, China, where have not been studied detail. This paper evaluates delineation accuracy Landsat8 OLI, Sentinel-1A, GF images EPTR. Each image uses advanced method itself to...
Vegetation can reflect the ecological characteristics of soil, water and temperature, which is great significance for protecting environment. growth affected by topographic features such as elevation, slope aspect. Due to autocorrelation topography vegetation index, current research does not fully consider influence on relationship between index factors. Therefore, it necessary eliminate throug...
In Arctic regions, a major concern is the release of carbon from melting permafrost that could greatly exceed current human carbon emissions. Arctic rivers drain these organic-rich watersheds (Ob, Lena, Yenisei, Mackenzie, Yukon) but field measurements at the outlets of these great Arctic rivers are constrained by limited accessibility of sampling sites. In particular, the highest dissolved org...
Detailed characteristics of crop planting structure (CPS) evolution can inform the optimization yield proportion in black soil region Northeast China (BSRNC). Choosing Hailun County as an example, this study sought to analyze geographic CPS from 2000 2020. Our analysis produced new spatiotemporal information based on remote-sensing interpretation data, namely, Landsat4-5 TM, Landsat7 ETM+, and ...
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