Results 41 to 50 of about 24,500,546 (255)

Relación de firmas espectrales para la identificación de bosque seco en imágenes de satélite Sentinel 2, cuenca baja del río Chira, Región Piura

open access: yesRevista de Teledetección, 2020
El Fenómeno del Niño, las sequías y el clima cálido influyen de manera directa en el buen estado ecológico de los bosques en la Región Piura. El objetivo es relacionar las firmas espectrales evaluadas en las imágenes de satélite Sentinel-2 con las firmas
C. Aldana   +5 more
doaj   +1 more source

Multi-Year Cereal Crop Classification Model in a Semi-Arid Region Using Sentinel-2 and Landsat 7–8 Data

open access: yesAgriculture, 2023
This study developed a multi-year classification model for winter cereal in a semi-arid region, the Kairouan area (Tunisia). A random forest classification model was constructed using Sentinel 2 (S2) vegetation indices for a reference agricultural season,
Manel Khlif   +5 more
doaj   +1 more source

An Application of Sentinel-1, Sentinel-2, and GNSS Data for Landslide Susceptibility Mapping [PDF]

open access: yesISPRS International Journal of Geo-Information, 2020
In this study, we used Sentinel-1 and Sentinel-2 data to delineate post-earthquake landslides within an object-based image analysis (OBIA). We used our resulting landslide inventory map for training the data-driven model of the frequency ratio (FR) for landslide susceptibility modelling and mapping considering eleven conditioning factors of soil type ...
Omid Ghorbanzadeh   +5 more
openaire   +2 more sources

Harmonization of Landsat and Sentinel 2 for Crop Monitoring in Drought Prone Areas: Case Studies of Ninh Thuan (Vietnam) and Bekaa (Lebanon)

open access: yesRemote Sensing, 2020
Proper satellite-based crop monitoring applications at the farm-level often require near-daily imagery at medium to high spatial resolution. The combination of data from different ongoing satellite missions Sentinel 2 (ESA) and Landsat 7/8 (NASA ...
Minh D. Nguyen   +4 more
doaj   +1 more source

Fusion of Sentinel-2 images [PDF]

open access: yesRemote Sensing of Environment, 2016
Sentinel-2 is a very new programme of the European Space Agency (ESA) that is designed for fine spatial resolution global monitoring. Sentinel-2 images provide four 10 m bands and six 20 m bands. To provide more explicit spatial information, this paper aims to downscale the six 20 m bands to 10 m spatial resolution using the four directly observed 10 m
Wang, Qunming   +3 more
openaire   +2 more sources

Evapotranspiration Partitioning in Selected Subtropical Fruit Tree Orchards Based on Sentinel 2 Data Using a Light Gradient-Boosting Machine (LightGBM) Learning Model in Malelane, South Africa

open access: yesHydrology
The accurate estimation of evapotranspiration (ET) and its components are vital for water resource management and irrigation planning. This study models tree transpiration (T) and ET for grapefruit, litchi, and mango orchards using light gradient ...
Prince Dangare   +8 more
doaj   +1 more source

Regiones quemadas en el Estado de México segun el dNBR calculado en Sentinel 2

open access: yes, 2022
Diferencias el índice normalizado de zonas quemadas en el Estado de México calculadas en el sensor Sentinel 2 durante 2016-2021El índice normalizado de zonas quemadas, NBR por su significado en inglés (Normalized Burn Ratio) relaciona la respuesta ...
ESA EO program, Sentinel 2
core  

Towards a continuous inland excess water flood monitoring system based on remote sensing data

open access: yesJournal of Environmental Geography, 2017
Inland excess water (IEW) is a type of flood where large flat inland areas are covered with water during a period of several weeks to months. The monitoring of these floods is needed to understand the extent and direction of development of the ...
van Leeuwen Boudewijn   +3 more
doaj   +1 more source

Local-scale agricultural drought monitoring with satellite-based multi-sensor time-series

open access: yesGIScience & Remote Sensing, 2020
Globally, drought constitutes a serious threat to food and water security. The complexity and multivariate nature of drought challenges its assessment, especially at local scales.
Gohar Ghazaryan   +4 more
doaj   +1 more source

Improved red-edge chlorophyll-a detection for Sentinel 2

open access: yesEcological Indicators, 2021
Chlorophyll-a (chl-a) concentration is an indicator of algal biomass. The Sentinel 2 platform offers greatly improved spatial resolution over other satellite platforms designed for water based chl-a retrievals and includes a “red-edge” band at 704 nm not
James Bramich   +2 more
doaj   +1 more source

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