Results 1 to 10 of about 11,897 (218)

Comparison of NDWI, MNDWI1 and MNDWI2 Indices from Sentinel-2 Satellite Images for Extracting Urban Surface Water Bodies in Khon Kaen

open access: yesวารสารวิทยาการสารสนเทศและเทคโนโลยีประยุกต์, 2021
The objective of this research is to compare methods for determining the Normalized Difference Water Index (NDWI) and the Modified Normalized Difference Water Index (MNDWI) and resistance to urban and urban disturbances.
Chaiyarit Sawetwong, Pipat Reungsang
doaj   +2 more sources

Validation of remotely-sensed evapotranspiration and NDWI using ground measurements at Riverlands, South Africa [PDF]

open access: yesWater SA, 2014
Quantification of the water cycle components is key to managing water resources. Remote sensing techniques and products have recently been developed for the estimation of water balance variables. The objective of this study was to test the reliability of
Bugan, Richard DH   +4 more
core   +9 more sources

Assessing habitat suitability for wintering geese by using Normalized Difference Water Index (NDWI) in a large floodplain wetland, China

open access: yesEcological Indicators, 2021
Hydrological condition is one of the most important factors affecting the abundance and distribution of waterbirds in large freshwater floodplains, as it influences their habitat and food availability.
Jia-kun Teng, Shaoxia Xia, Yu Liu
exaly   +3 more sources

Revision of Vajiralongkorn Dam’s Reservoir Characteristic CurvesUsing NDWI Derived from Landsat8 Data

open access: yesEnvironment and Natural Resources Journal, 2019
Reservoir characteristics are the essential information for water management planning and reservoir operation. Regular monitoring and assessment of the reservoir characteristics can reduce risks associated with the ...
Yutthana Phankamolsil   +1 more
doaj   +3 more sources

A water stress evaluation over forest canopy using NDWI in Korean peninsula

open access: yesKorean Journal of Remote Sensing, 2015
Leaf water content is one of important indicators that shows states of vegetation. It is important to monitor vegetation water content using remote sensing for forest management. In this study, we investigated the degree of water stress in Korean peninsula with Normalized Difference Water Index (NDWI) to study the water content of vegetation canopy. We
Nohun Seong   +6 more
exaly   +3 more sources

Water Body Detection Analysis Using NDWI Indices Derived from Landsat-8 OLI

open access: yesPolish Journal of Environmental Studies, 2020
Normalized different water indices (NDWIs) derived from satellite images are commonly and successfully utilized in surface water body detection and mapping. In this study, the water body detection capability of three NDWI models (NDWI(Green, NIR), NDWI(Green, SWIR1) and NDWI(Green, SWIR2)) generated using 28 multitemporal Landsat-8 OLI multispectral ...
Emre Ozelkan
exaly   +3 more sources

Aplicación de índices espectrales para determinar la transformación del bosque seco en Agua de Dios (Cundinamarca, Colombia)

open access: yesAvances, 2021
El bosque seco tropical (Bs-T), que se caracteriza por estabilizar los suelos y regular el ciclo hidrológico, se ha visto afectado por la pérdida de vigor vegetal y humedad en el sustrato, particularmente en el municipio de Agua de Dios (Cundinamarca ...
Angie Daniela Alarcón Montaña   +1 more
doaj   +1 more source

بررسی اثر شاخص‌های مورفولوژیکی رودخانه گرگانرود بر پهنه‌های سیلاب با استفاده از داده‌های سنجش از دور و تحلیل‌های مکانی(منطقه مطالعاتی: شهر آق‌قلا) [PDF]

open access: yesجغرافیا و مخاطرات محیطی, 2020
عبور رودخانه گرگانرود از شهرستان آق‌قلا همواره موجب سیلاب‌های مخربی شده است. هدف از تحقیق حاضر بررسی اثرات مورفولوژیکی رودخانه گرگانرود بر پهنه‌های سیلاب 1398 شهرستان آق‌قلاست؛ بدین منظور از تصاویر سری زمانی ماهواره‌های Sentinel-2 و Landsat-8 به منظور ...
کامران گنجی   +2 more
doaj   +1 more source

Assessment of drought severity in Khar Yamaat Nature Reserve Area using satellite derived drought indexes

open access: yesMongolian Journal of Biological Sciences, 2022
Mongolia has experienced several extreme climate events during the past decades, including severe extreme droughts. The issue of drought is of paramount significance in our country of nomadic culture and nomadic pastoralism. The eighteen years (2001-2018)
Munkhtur Davaagerel   +2 more
doaj   +1 more source

Monitoring the Land Covers Around Al- Razaza Lake/ Iraq Based Upon Multi-Temporal Analysis Technique

open access: yesAl-Mustansiriyah Journal of Science, 2021
Remote sensing techniques are very important for the identification of land cover patterns and monitoring changes that occurred, thus three different periods were taken for the Al-Razaza lake region.
Sabah Noori Kadhum, Esraa Salam Alsudani
doaj   +1 more source

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