نتایج جستجو برای: landsat8
تعداد نتایج: 121 فیلتر نتایج به سال:
Researchers have studied oil spills in open waters using remote sensors, but few have focused on extracting reflectance features of oil pollution on sea ice. An experiment was conducted on natural sea ice in Bohai Bay, China, to obtain the spectral reflectance of oil-contaminated sea ice. The spectral absorption index (SAI), spectral peak height (SPH), and wavelet detail coefficient (DWT d5) we...
Taking the Dadu River Basin in Danba area of Ganzi Prefecture, Sichuan Province as research area, based on 2013 and 2016 Landsat8 remote sensing images, temperature vegetation drought index (TVDI) method is used to divide dry valley into 6 arid gradient regions. Using ArcGIS10.5 software Fragstats4.2 calculate landscape pattern different areas years, combined with survey results agricultural po...
The main goal of the research is to evaluate suitability landforms in Zamaqi valley basin for Human uses, dependence on satellite images which have been received from (Landsat8 OLI) (NASA) https://earthexplorer.usgs.gov (USGS) site, by using Geographical information system, depending function of(overlay-weighted overlay) a tool (Special Analyst tools).rather than used (Geology information, Topo...
The primary restriction on high resolution remote sensing data is the limit observation frequency. Using a network of multiple sensors is an efficient approach to increase the observations in a specific period. This study explores a leaf area index (LAI) inversion method based on a 30 m multi-sensor dataset generated from HJ1/CCD and Landsat8/OLI, from June to August 2013 in the middle reach of...
Abstract Changes in land surface reflectance measured by remote sensing data can be useful climate change studies. This study attempts to Evaluation of the relationship between Snow cover index and Land temperature for used Normalized snow (S3), Surface Temperature (LST), Sulaymaniyah city, northeastern Iraq. Data from Landsat5 TM Landsat8 OLI images were detect during period years 1987, 1999, ...
Seawater temperature is an extremely important factor as it affects the ecological balance of marines ecosystems, continental weather, and earth's atmosphere. However, pressure on both coastal marine resources, use oceans a wastes deposit, increase urbanization, anthropogenic activities in zones are all causes thermal pollution. The degradation water quality by any process that changes ambient ...
The leaf area index (LAI) is a crucial parameter for analyzing terrestrial ecosystem carbon cycles and global climate change. Obtaining high spatiotemporal resolution forest stand vegetation LAI products over large areas essential an accurate understanding of ecosystems. This study takes the northwestern part Inner Mongolia Autonomous Region (the northern section Greater Khingan Mountains) in C...
The West Coast New Area of Qingdao has witnessed a fast-developing economy and accelerated urbanization since its establishment as national new area, which also leads to the rapid change land utilization status. In such context, ways quickly monitoring changes leveraging resources more efficiently intensively are practical problem that requires urgent settlement. Focusing on Landsat8 OLI images...
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