نتایج جستجو برای: mndwi

تعداد نتایج: 147  

Journal: :Environmental Engineering Research 2023

The construction of new breakwaters in Anzali port has had a significant impact on the water body international lagoon. wetland is under threat from sediment influx mountainous regions, and study used satellite image processing to demonstrate how impedes natural transfer lagoon sea. methodology employed hybrid approach combining two methods: normal index (MNDWI) supervised classification (SVM) ...

Journal: :International Journal on Advanced Science, Engineering and Information Technology 2019

Journal: :Geoenvironmental Disasters 2023

Abstract Introduction After flood occurrences, remote sensing images provide crucial information for mapping inundation extent. Optical satellite can be utilized to generate flooded area maps when the areas are free from clouds. Materials and Methods In this study was calculated using a variety of water indices classification algorithms, on Landsat data. Pre-flood, during flood, post-flood data...

Journal: :E3S web of conferences 2023

The article presents the analysis of widespread spectral indexes results Earth remote sensing data thematic processing to reveal most representative one for applying under conditions critical increase groundwater level and salinity as well salinized soil. Long-term monitoring multispectral images LandSat-8 satellite were collected Golodnostepsky irrigation land. Sites with disturbing ameliorati...

Journal: :Water 2021

Accurate waterbody mapping can support water-related environment monitoring and resource management. The Sentinel series satellites provide high-quality Synthetic Aperture Radar (SAR) optical observations that are commonly used in mapping. However, owing to the 10-m spatial resolution of data, previous studies mostly focused on large waterbodies. In this work, we evaluated performance small ove...

2010
Valérie Soti Annelise Tran Jean-Stéphane Bailly Christian Puech Danny Lo Seen Agnes Bégué

100-150 words) Remote sensing methods for locating and monitoring temporary ponds over large areas in arid lands were tested on a study site in Northern Senegal. Three main results are presented, validated with field data and intended to highlight different spectral, spatial and temporal characteristics of the methods: 1) Among several water indices tested, two Middle InfraRed-based indices (MN...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2009
Valérie Soti Annelise Tran Jean-Stéphane Bailly Christian Puech Danny Lo Seen Agnès Bégué

100-150 words) Remote sensing methods for locating and monitoring temporary ponds over large areas in arid lands were tested on a study site in Northern Senegal. Three main results are presented, validated with field data and intended to highlight different spectral, spatial and temporal characteristics of the methods: 1) Among several water indices tested, two Middle InfraRed-based indices (MN...

Journal: :Pfg – Journal Of Photogrammetry, Remote Sensing And Geoinformation Science 2022

Abstract Peatlands as natural carbon sinks have a major impact on the climate balance and should therefore be monitored protected. The hydrology of peatland serves an indicator storage capacity. Hence, we investigate question how suitable different remote sensing data are for monitoring size open water surface table depth (WTD) ecosystem. Furthermore, examine potential combining this purpose. W...

Nowadays, the risk of degradation of wetlands is one of the main environmental challenges in the world, so continuous and long-term monitoring of ecological changes in wetlands can play a key role in their protection and proper management. In the present study, the trend of monthly changes in some of the most important ecological indicators of the aquatic environment of Shadegan wetland includi...

Journal: :Hydrology 2023

The Ping River, located in northern Thailand, is facing various challenges due to the impacts of climate change, dam operations, and sand mining, leading riverbank erosion deposition. To monitor accretion, this study employs remote sensing GIS technology, utilizing five water indices: Normalized Difference Water Index (NDWI), Modified (MNDWI), Soil-Adjusted Vegetation (SAVI), Ratio (WRI), Autom...

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