Results 31 to 40 of about 242,788 (269)

Performances Evaluation of Water Body Extraction Techniques Using Landsat ETM+ Data: Case- Study of Lake Nubia, Sudan [PDF]

open access: yesThe Egyptian International Journal of Engineering Sciences and Technology, 2016
Lake Nubia (LN) is the Sudanese portion of Aswan High Dam Lake (AHDL). Thispaper aims to detect the better technique for extraction of the water surface of LN.Eight techniques are tested using Landsat ETM+ image and their performances inextracting the ...
K Ali, A Negmb, M Elsahabi
doaj   +1 more source

Analysis of Burning Area from Forest Fire using Sentinel-2 image: A Case Study of Pai, Mae Hong Son Province

open access: yesวารสารวิทยาการสารสนเทศและเทคโนโลยีประยุกต์, 2021
Forest fires are considered as a catastrophe that can cause great damage widely, some of which can occur spontaneously, or caused by human themselves, resulting in the air quality reduction.
Nawaphon Linta   +4 more
doaj   +1 more source

Evaluation of Near Infrared Spectroscopy (NIRS) and Remote Sensing (RS) for Estimating Pasture Quality in Mediterranean Montado Ecosystem

open access: yesApplied Sciences, 2020
Pasture quality monitoring is a key element in the decision making process of a farm manager. Laboratory reference methods for assessing quality parameters such as crude protein (CP) or fibers (neutral detergent fiber: NDF) require collection and ...
João Serrano   +7 more
doaj   +1 more source

Temperatura de la superficie terrestre en diferentes tipos de cobertura de la región andina colombiana / Land surface temperature in different land covers of the Andean Region of Colombia [PDF]

open access: yesSociedade & Natureza, 2014
This study assessed the relationship of Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) with land surface temperature (LST), using Landsat images of La Vieja river watershed, in the Andean region of Colombia. We
Andrés Felipe Carvajal   +1 more
doaj   +1 more source

Evaluating spectral indices for water bodies extraction in western Tibetan Plateau

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2021
Waterbody extraction in the high-elevated region of the Tibetan Plateau from remote sensing imagery is an efficient way to investigate and monitor water resources.
Hafiza Wajiha Khalid   +2 more
doaj   +1 more source

Geospatial assessment of early summer heatwaves, droughts, and their relationship with vegetation and soil moisture in the arid region of Southern Punjab, Pakistan

open access: yesJournal of Water and Climate Change, 2022
This study focuses on the spatiotemporal analysis of early summer heatwaves, droughts, and their relationship with vegetation and soil moisture from 2013 to 2022 in South Punjab, Pakistan.
Sana Arshad   +6 more
doaj   +1 more source

Seasonal differences in the dominant factors of surface urban heat islands along the urban-rural gradient

open access: yesFrontiers in Environmental Science, 2022
Urbanization has been accelerating; hence the effect of urban heat island (UHI) has increased. There has been extensive research on spatiotemporal UHI changes and drivers, however, data on the dominant seasonal factors of UHIs and the differences along ...
Jiaxing Xin   +7 more
doaj   +1 more source

Monitoring Irrigation Events and Crop Dynamics Using Sentinel-1 and Sentinel-2 Time Series

open access: yesRemote Sensing, 2022
Capturing and identifying field-based agricultural activities, such as the start, duration and end of irrigation, together with crop sowing/germination, growing period and time of harvest, offer informative metrics that can assist in precision ...
Chunfeng Ma   +2 more
doaj   +1 more source

Characterizing urban growth and land surface temperature in the western himalayan cities of India using remote sensing and spatial metrics

open access: yesFrontiers in Environmental Science, 2023
Urban heat islands (UHI) are developing due to increasing urbanization and loss of vegetation in major cities in India. Increased urbanization modifies the urban microclimate that leads to significant land-use changes resulting in surface conversion and ...
Rajman Gupta   +3 more
doaj   +1 more source

Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery

open access: yes, 2006
The normalized difference water index (NDWI) of McFeeters (1996) was modified by substitution of a middle infrared band such as Landsat TM band 5 for the near infrared band used in the NDWI. The modified NDWI (MNDWI) can enhance open water features while
Hanqiu Xu
semanticscholar   +1 more source

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