Results 41 to 50 of about 16,756 (230)

Proposal for a remote sensing trophic state index based upon Thematic Mapper/Landsat images

open access: yesRevista Ambiente & Água, 2013
This work proposes a trophic state index based on the remote sensing retrieval of chlorophyll-α concentration. For that, in situ Bidirectional Reflectance Factor (BRF) data acquired in the Ibitinga reservoir were resampled to match Landsat/TM spectral ...
Evlyn Márcia Leão de Moraes Novo   +4 more
doaj   +1 more source

WATER LEVEL FLUCTUATION ASSESSMENT OF LAKE CHAD FOR ENVIRONMENTAL SUSTAINABILITY USING REMOTE SENSING AND GEOGRAPHIC INFORMATION SYSTEM TECHNIQUE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Surface water is a significant constituent of the water cycle, and is paramount for human survival, social and economic development as well as environmental sustainability.
A. Hussaini   +4 more
doaj   +1 more source

Suitable habitat of Himalayan wolf in Upper Mustang, Annapurna Conservation Area, Nepal

open access: yesWildlife Biology, EarlyView.
Decades ago, the Himalayan wolf Canis lupus chanco, a genetically distinct sub‐species of the gray wolf Canis lupus, faced persecution by local communities in the Nepalese Himalayas. Recently, wolf populations have returned and recolonized, sparking concerns about conflicts over livestock depredation, and emphasizing the urgent need for comprehensive ...
Deu Bahadur Rana   +5 more
wiley   +1 more source

Integração de imagens de sensores de microondas e ópticos para fins de mapeamento e classificação de reflorestamentos no sul do Brasil [PDF]

open access: yes, 2001
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de ProduçãoO presente trabalho teve por objetivo avaliar as potencialidades de sensores ópticos e de microondas para a elaboração de ...
Rosot, Nelson Carlos
core  

Comment on Ju et al. (2025): Global Declines in Mangrove Area and Carbon Stock From 1985 to 2020

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract This is a comment on Ju, Fu, Lyne, et al. (2025, https://doi.org/10.1029/2025gl115303), for which we believe there are significant errors in the analysis that has been undertaken. While the aim and objectives of the study are appropriate, the claimed results do not align with other published studies on mangroves and are considered unlikely to ...
Pete Bunting   +3 more
wiley   +1 more source

Hydrothermally altered mineral mapping of the Malanjkhand copper mineralization in India using Landsat satellite data

open access: yesGeology, Ecology, and Landscapes
The study evaluates how Landsat-5 Thematic Mapper (TM), Landsat-7 Enhanced Thematic Mapper Plus (ETM+), and Landsat-8 Operational Land Imager (OLI) satellite data can be used to detect and map hydrothermally altered minerals in the Malanjkhand copper ...
Subhanil Guha   +3 more
doaj   +1 more source

Assessment of the Potential for Territorial Development in the Coastal Regions of Qeshm Island, Iran

open access: yesEngineering Reports, Volume 8, Issue 7, July 2026.
This graphical abstract illustrates coastal land use changes and development potential on Qeshm Island, Iran, highlighting erosion trends, declining natural habitats, and areas most suitable for sustainable coastal development, with Suza, Laft, and Shib‐e‐Deraz prioritized as optimal zones.
Majid Kia, Mohsen Dadras, Zeinab Aliyas
wiley   +1 more source

A model-based approach for mapping rangelands covers using Landsat TM image data

open access: yesCaspian Journal of Environmental Sciences, 2009
Empirical models are important tools for relating field-measured biophysical variables to remotely sensed data. Regression analysis has been a popular empirical method of linking these two types of data to estimate variables such as biomass, percent ...
Ajorlo, M.   +2 more
doaj  

Holistic analysis of shoreline change and mudbank dynamics across the Guiana coastline

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 7, July 2026.
Annual analysis of shoreline change across the entire Guiana coastline, northern South America, including quantification of the rate and nature of alongshore mudbank migration and cross‐shore mangrove establishment and loss was conducted. Identification of other key coastal landforms contributing to exceptional rates of shoreline change across the ...
Martin S. J. Rogers, Tom Spencer
wiley   +1 more source

Water Quality Retrieval from Landsat TM Imagery

open access: yesProcedia Computer Science, 2011
AbstractIn this paper, the utility of Landsat TM imagery for water quality studies in East Texas is investigated. Remote sensing has an important and effective role in water quality management. Remote sensing satellites measure the amount of solar radiation reflected by surface water and the reflectance of water depend upon the concentration and ...
openaire   +1 more source

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