Results 21 to 30 of about 1,037,697 (313)

Automatic Methodology to Detect the Coastline from Landsat Images with a New Water Index Assessed on Three Different Spanish Mediterranean Deltas

open access: yesRemote Sensing, 2019
Due to the importance of coastline detection in coastal studies, different methods have been developed in recent decades in accordance with the evolution of measuring techniques such as remote sensing. This work proposes an automatic methodology with new
Sandra Paola Viaña-Borja   +1 more
doaj   +1 more source

INVESTIGATION OF WATER QUALITY IN AMBUR CITY BY WATER QUALITY INDEXING [PDF]

open access: yesThe holistic approach to environment, 2020
Present study is carried out for the assessment of ground water quality and comparing its suitability for drinking purpose in Ambur city in Tirupattur District, Tamil Nadu, India. Water quality index is calculated on the basis of pH, conductivity, total dissolved solids, total hardness, Ca2+, Mg2+, Na+, K+, Cl-, alkalinity, and SO42- content of the ...
Farooqui, K. Mohiuddin   +2 more
openaire   +3 more sources

THE INDEX OF REFRACTION OF WATER [PDF]

open access: yesSchool Science and Mathematics, 1904
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openaire   +2 more sources

The use of water quality index and water pollution index in assessing the water quality and suitability of the river Molo water basin, Kenya

open access: yesEast African Journal of Science, Technology and Innovation, 2022
Water quality assessment has become a very essential scientific procedure for qualifying water for drinking and general purpose use, and better public health policy on clean water supply. Various tools have been employed to determine the status of water systems for drinking, industrial and general use. For the purpose of this study, water quality index
Nathan K. Kipsang   +2 more
openaire   +1 more source

Automated Training Data Generation from Spectral Indexes for Mapping Surface Water Extent with Sentinel-2 Satellite Imagery at 10 m and 20 m Resolutions

open access: yesRemote Sensing, 2021
This study presents an automated methodology to generate training data for surface water mapping from a single Sentinel-2 granule at 10 m (4 band, VIS/NIR) or 20 m (9 band, VIS/NIR/SWIR) resolution without the need for ancillary training data layers. The
Kristofer Lasko   +5 more
doaj   +1 more source

Water Poverty Index: a Tool for Water Resources Management in Jordan

open access: yesWater, Air, & Soil Pollution, 2022
In terms of water resources, Jordan is considered one of the poorest countries in the world. Water resources management is one of the available options to decrease the gap between demand and resources. Water resources management requires optimum use of the available water resources taking into consideration resources availability, resources reliability,
Ghada Alqatarneh, Kamel K. Al-Zboon
openaire   +2 more sources

A Comparative Study of Water Indices and Image Classification Algorithms for Mapping Inland Surface Water Bodies Using Landsat Imagery

open access: yesRemote Sensing, 2020
A comparative study of water indices and image classification algorithms for mapping inland water bodies using Landsat imagery was carried out through obtaining 24 high-resolution (≤5 m) and cloud-free images archived in Google Earth with the same (or ±1
Feifei Pan, Xiaohuan Xi, Cheng Wang
doaj   +1 more source

Spatiotemporal Variation of Surface Water Resources in Inner Mongolia from 1990 to 2015

open access: yesGuan'gai paishui xuebao, 2021
【Background】 Inner Mongolia, located in the arid and semi-arid region of central Eurasia, is the home to numerous lakes, rivers and reservoirs. These surface water resources are of great significance to ecosystem functions but have dwindled significantly
YUAN Ruiqiang, QING Song
doaj   +1 more source

Water holding capacity of two olive (Olea europea L.) cultivars in Cañete valley, Lima-Peru

open access: yesScientia Agropecuaria, 2015
The study of the indexes of water to Olea europea L. is important because it allows understanding of the water capacity of this species. This trial was carried out in the Valley Cañete with olive varieties ‘Frantoio’ and ‘Sevillana’ (both 10 years old ...
Ricardo Borjas   +2 more
doaj   +1 more source

Detection of Water Spread Area Changes in Eutrophic Lake Using Landsat Data

open access: yesSensors, 2022
Adequate water resource management is essential for fulfilling ecosystem and human needs. Nainital Lake is a popular lake in Uttarakhand State in India, attracting lakhs of tourists annually.
Vaibhav Deoli   +2 more
doaj   +1 more source

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