Results 71 to 80 of about 1,165,369 (212)
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract Watersheds regulate biogeochemical processes and provide ecosystem services to human societies, but disturbances can fundamentally alter these processes across space and time. Determining when and where to sample to capture disturbance impacts in watersheds remains a central challenge.
Peter Regier +9 more
wiley +1 more source
A Transformer-Based Framework for Spatiotemporal Unmixing of Land–Water Mixtures in Multispectral Satellite Data [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information SciencesSpectral unmixing is essential for analyzing mixed pixels in remote sensing, though it has traditionally focused on hyperspectral data. Multispectral Sentinel-2 imagery, despite its wide availability and relevance for environmental monitoring, has seen ...
A. B. Nguyen, A. Schenk, S. Hinz
doaj +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.Abstract Modeling processes within Earth's and other planetary bodies' mantle requires constraints from phase equilibrium to infer how changes in phase abundance and composition affect physical properties and geochemical processes. When applying such thermodynamic models on a planetary scale, performance becomes especially crucial.
Philip Hartmeier, Pierre Lanari
wiley +1 more source
Unmixing urban hyperspectral imagery with a Gaussian mixture model on endmember variability
CoRR, 2018 In this paper, we model a pixel as a linear combination of endmembers sampled from probability distributions of Gaussian mixture models (GMM). The parameters of the GMM distributions are estimated using spectral libraries. Abundances are estimated based on the distribution parameters.
Yuan Zhou 0004 +2 more
openaire +3 more sources
Composition and Provenance of Victoria Group Sandstones in Southern North Victoria Land, Antarctica
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.Three distinct source areas contributed to sandstones of the Victoria Group within the Transantarctic Basin in southern North Victoria Land. During the Permian, quartzose sandstones were derived from erosion of the local Ross Orogen, likely from an uplifted swell in the area of today's Ross Sea, the Ross High.
Martin Elsner +6 more
wiley +1 more source
Remote Sensing, 2015 Since the 2000s, bioenergy land use has been rapidly expanded in U.S. agricultural lands. Monitoring this change with limited acquisition of remote sensing imagery is difficult because of the similar spectral properties of crops. While phenology-assisted
Cheng Zhong, Cuizhen Wang, Changshan Wu
doaj +1 more source
Land Degradation &Development, Volume 37, Issue 15, Page 11112-11125, September 2026.ABSTRACT Soil erosion is a major environmental challenge in karst regions of Southwest China, where thin soils and high bedrock exposure accelerate land degradation. This study modified the RUSLE model by incorporating bedrock exposure rate to improve erosion simulation in Guizhou Province from 2000 to 2024.
Ning Niu, Jihui Fan, Yiying Li
wiley +1 more source
Modeling Land-Cover Types Using Multiple Endmember Spectral Mixture Analysis in a Desert City [PDF]
Spectral mixture analysis is probably the most commonly used approach among sub-pixel analysis techniques. This method models pixel spectra as a linear combination of spectral signatures from two or more ground components.
Soe W. Myint, Gregory S. Okin
core
Limnology and Oceanography, Volume 71, Issue 9, September 2026.Abstract Terrestrial subsidies shape aquatic ecosystem structure and function, serving as important energy channels for consumers when phytoplankton and other autochthonous resources are limited. Despite this, quantifying the assimilation of allochthonous nutrients by aquatic consumers can be challenging. Here, we show terrestrial plants, benthic algae,
Christopher B. Wall +4 more
wiley +1 more source
Spectral unmixing approach in hyperspectral remote sensing: a tool for oil palm mapping
TecnoLógicas, 2019 Oil palm plantations typically span large areas; therefore, remote sensing has become a useful tool for advanced oil palm monitoring. This work reviews and evaluates two approaches to analyze oil palm plantations based on hyperspectral remote sensing ...
Hector Vargas +2 more
doaj +1 more source