نتایج جستجو برای: landsat satellite

تعداد نتایج: 86824  

2010
George P. Petropoulos Krishna Prasad Vadrevu Gavriil Xanthopoulos George Karantounias Marko Scholze

Satellite remote sensing, with its unique synoptic coverage capabilities, can provide accurate and immediately valuable information on fire analysis and post-fire assessment, including estimation of burnt areas. In this study the potential for burnt area mapping of the combined use of Artificial Neural Network (ANN) and Spectral Angle Mapper (SAM) classifiers with Landsat TM satellite imagery w...

2011
Desheng Liu Shanshan Cai

Temporal trajectories of land-cover change provide important information on landscape dynamics that are critical to our understanding of complex human–environment adaptive systems. The increasing availability of long time series of satellite images, especially the recent free release of multi-decadal Landsat satellite archive, presents a great opportunity to improve our ability to detect land-c...

2003
L. Eklundh P. Pilesjö

The study aims at investigating the use of Landsat thematic mapper (TM) for mapping leaf area index (LAI) in coniferous and deciduous forests in southern Sweden. LAI has been estimated in the field with optical measurements, allometric equations, and litter-trap data, and empirical relationships between LAI estimates and satellite-measured reflectances have been analysed. Several common vegetat...

2010
Wadii Boulila Imed Riadh Farah Karim Saheb Ettabaâ Bassel Solaiman Henda Hajjami Ben Ghézala

Knowledge discovery from satellite images in spatio-temporal context remains one of the major challenges in the remote sensing field. It is, always, difficult for a user to manually extract useful information especially when processing a large collection of satellite images. Thus, we need to use automatic knowledge discovery in order to develop intelligent image interpretation systems. In this ...

2005
Michael Toomey Lee A. Vierling

Broad-scale monitoring of varying moisture levels of leaves has ramifications for understanding fire potential, biogeochemistry, and ecosystem dynamics. Five different shortwave infrared (SWIR)-derived spectral indices, principal components analysis (PCA), and the tasseled cap transformation (TCT), derived from Landsat Thematic Mapper (TM) and Advanced Spaceborne Thermal Emission and Reflection...

Journal: :Remote Sensing 2016
Gennadiy Donchyts Jaap Schellekens Hessel Winsemius Elmar Eisemann Nick van de Giesen

Accurate maps of surface water are essential for many environmental applications. Surface water maps can be generated by combining measurements from multiple sources. Precise estimation of surface water using satellite imagery remains a challenging task due to the sensor limitations, complex land cover, topography, and atmospheric conditions. As a complementary dataset, in the case of hilly lan...

2017
Passang Dorji Peter Fearns

The impact of anthropogenic activities on coastal waters is a cause of concern because such activities add to the total suspended sediment (TSS) budget of the coastal waters, which have negative impacts on the coastal ecosystem. Satellite remote sensing provides a powerful tool in monitoring TSS concentration at high spatiotemporal resolution, but coastal managers should be mindful that the sat...

2017
Marcus D. Williams Marshall Shepherd

This study maps the spatial and temporal evolution of acres irrigated in the Coastal Plain of Georgia over a 38 year period. The goal of this analysis is to create a time-series of irrigated areas in the Coastal Plain of Georgia at a sub-county level. From 1976 through 2013, Landsat images were obtained and sampled at four year intervals to manually detect Center-Pivot irrigation (CPI) systems ...

ژورنال: علوم آب و خاک 2017
دانش‌کار آراسته, پیمان, کمالی, میثم, یونس‌زاده جلیلی, سهیلا,

Integrated management of watershed basins depends on deep knowledge of basic concepts such as the arrangement of lands and their uses. Location and distribution of agricultural land use help to balance water resources in the watershed basins. In this research with the help of satellite images of Landsat 5 and 8, and the method of maximum likelihood classification algorithm, land use types of wa...

ژورنال: آبخیزداری ایران 2019

Soil is one of the most important natural resources of any country. the erosion causes not only the depletion of the soil and the loss of the land, causing great and irreparable damages, but also with the deposition of materials in streams, reservoirs, ports, and reduced pool capacity. Therefore, it should not be underestimated. In this study, we identify and zoning of the erosion areas in the ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید