Results 1 to 10 of about 2,756,178 (300)

Microwaves reduce water refractive index

open access: yesScientific Reports, 2022
Microwaves, long used as a convenient household appliance, have been increasingly used in industrial processes such as organic synthesis and oil processing.
Yusuke Asakuma   +6 more
doaj   +4 more sources

Multi-Spectral Water Index (MuWI): A Native 10-m Multi-Spectral Water Index for Accurate Water Mapping on Sentinel-2

open access: yesRemote Sensing, 2018
Accurate water mapping depends largely on the water index. However, most previously widely-adopted water index methods are developed from 30-m resolution Landsat imagery, with low-albedo commission error (e.g., shadow misclassified as water) and ...
Zifeng Wang   +3 more
doaj   +3 more sources

Water Quality Index for Basrah Water Supply [PDF]

open access: yesEngineering and Technology Journal, 2013
The water quality index (WQI) is a very effective method that allows to compare the quality of various water samples based on the indicator values of each sample.
Risala A. Mohammed
doaj   +2 more sources

Sustainable Water Management Index, SWaM_Index

open access: yesCogent Engineering, 2019
The present paper describes the Sustainable Water Management Index, SWaM_Index, useful for managers to measure the sustainability of water management and to assess the effects of the policies undertaken in the direction of sustainability.
M. Maiolo, D. Pantusa
doaj   +4 more sources

Water index and Swin Transformer Ensemble (WISTE) for water body extraction from multispectral remote sensing images

open access: yesGIScience & Remote Sensing, 2023
Automatic surface water body mapping using remote sensing technology is greatly meaningful for studying inland water dynamics at regional to global scales.
Donghui Ma   +3 more
doaj   +1 more source

Application of Spectral Index-Based Logistic Regression to Detect Inland Water in the South Caucasus

open access: yesRemote Sensing, 2021
The Caucasus is a diverse region with many climate zones that range from subtropical lowlands to mountainous alpine areas. The region is marked by irrigated croplands fed by irrigation canals, heavily vegetated wetlands, lakes, and reservoirs.
James Worden   +3 more
doaj   +1 more source

A Simple, Fully Automated Shoreline Detection Algorithm for High-Resolution Multi-Spectral Imagery

open access: yesRemote Sensing, 2022
This paper develops and validates a new fully automated procedure for shoreline delineation from high-resolution multispectral satellite images. The model is based on a new water–land index, the Direct Difference Water Index (DDWI). A new technique based
Hazem Usama Abdelhady   +3 more
doaj   +1 more source

Interannual and Seasonal Variations of Hydrological Connectivity in a Large Shallow Wetland of North China Estimated from Landsat 8 Images

open access: yesRemote Sensing, 2021
Hydrological connectivity is an important characteristic of wetlands that maintains the stability and functions of an ecosystem. This study investigates the temporal variations of hydrological connectivity and their driving mechanism in Baiyangdian Lake,
Ziqi Li   +5 more
doaj   +1 more source

Extracting Urban Water Bodies from Landsat Imagery Based on mNDWI and HSV Transformation

open access: yesRemote Sensing, 2022
Urban water bodies are critical for sustainable urban ecological and social development. However, the complex compositions of urban land cover and small water bodies pose considerable challenges to urban water surface delineation.
Liwei Chang   +5 more
doaj   +1 more source

UTHM water quality classification based on sub index [PDF]

open access: yes, 2020
River or stream at their source is unpolluted, but as water flow downstream, the river or lake is receiving point and non-point pollutant source. Ammoniacal nitrogen (NH3- N) and suspended solids (SS) strongly influences the dynamics of the dissolved ...
Johari, A. H.   +2 more
core   +1 more source

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