Results 121 to 130 of about 1,373 (228)

Spectral variability in a multilinear mixing model

, 2018
: We present a new method for spectral unmixing which takes both nonlinear mixing and spectral variability into account. This is accomplished by combining the multiple endmember spectral mixture analysis (MESMA) approach with the recently developed ...
Thorvald Dox, Heylen, Rob, Scheunders, Paul, Rob Heylen, Dox, Thorvald, Paul Scheunders   +5 more
core   +1 more source

Non‐Perennial, Yet Predictable: Hierarchical Stream Activation Enables the Prediction of Channel Network Dynamics in Sporadically Monitored Catchments

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Predicting the dynamics of non‐perennial river networks is essential for hydrological modeling and water resource management. Yet, long‐term monitoring campaigns remains logistically challenging, particularly in remote and poorly accessible regions.
Francesca Barone, Nicola Durighetto, Gianluca Botter   +2 more
wiley   +1 more source

Calcium and Multi‐Isotope Constraints on Cation Exchange in Groundwater

Water Resources Research, Volume 62, Issue 6, June 2026.
Abstract Cation exchange is one of the most important processes in water‐rock interaction in the presence of clay minerals, with a common Ca‐Mg‐Na exchange system. However, systematic verification of Ca isotopes for tracing cation exchange in natural environments is lacking due to overlapping factors, such as dissolution‐precipitation of Ca‐minerals ...
Tianming Huang, Yin Long, Zhenbin Li, Lanping Feng, Yajing Zhao, Yiman Li, Wenjing Liu, Zhifang Xu, Shengwen Qi, Zhonghe Pang   +9 more
wiley   +1 more source

Holocene Aeolian Variability in Central Asia Inferred from Grain-Size End-Member Modeling of Sayram Lake Sediments

Quaternary
Arid Central Asia (ACA) is a major source of atmospheric dust in the Northern Hemisphere; however, the evolutionary models and driving mechanisms of Holocene aeolian activity in this region remain debated.
Shuang Yang, Yuchen Xu, Longjuan Cheng, Dongliang Ning, Dejun Wan, Qingfeng Jiang   +5 more
doaj   +1 more source

Structural Recovery of Overlooked Shrublands Drives Asymmetric Restoration in Dryland Ecosystems

Earth's Future, Volume 14, Issue 6, June 2026.
Abstract Current remote sensing of dryland ecosystems is fundamentally limited by a reliance on vegetation indices (“greenness”), which struggle to disentangle mixed pixel signals and fail to capture the non‐photosynthetic structural components critical for resilience.
Xin Lin, Lu Chen, Mingyao Cai, Hongying Chen, Fei Lun, Xin Jiao, Qiangqiang Sun, Danfeng Sun   +7 more
wiley   +1 more source

Erosional and Hydrological Controls on the Age and Thermochemical Stability of Particulate Organic Carbon in an Arctic River

Global Biogeochemical Cycles, Volume 40, Issue 6, June 2026.
Abstract Understanding the mechanisms that drive the mobilization and fate of organic carbon (OC) in Arctic landscapes is important for modeling the feedbacks among permafrost thaw, carbon cycling, and climate change. While significant progress has been made toward measuring in situ OC decomposition in permafrost soils and bulk particulate organic ...
Marisa Repasch, Suzanne P. Anderson, Robert S. Anderson, Josie Arcuri, Valier Galy, Joshua C. Koch, Irina Overeem   +6 more
wiley   +1 more source

Deep Origin and Shallow Launch for the Etna 122 B.C. Mafic Plinian Eruption

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Basaltic Plinian eruptions challenge our understanding of explosive volcanism. The 122 B.C. Plinian eruption of Etna ranks among the most powerful mafic explosive events known. Here, we combine volatile barometry of 122 B.C. from olivine‐hosted melt and fluid inclusions with comparative data from the sub‐Plinian Fall Stratified eruption at ...
M. Gavrilenko, E. Gazel, K. Dayton, A. Barth, T. Plank, E. G. Huggins, B. Houghton   +6 more
wiley   +1 more source

Classification of grassland community types and palatable pastures in semi-arid savannah grasslands of Kenya using multispectral Sentinel-2 imagery

Frontiers in Sustainable Food Systems
Semi-arid grassland ecosystems are crucial for biodiversity, carbon sequestration, and animal fodder; however, they are increasingly threatened by overgrazing degradation and climate variability.
James M. Muthoka, Pedram Rowhani, Edward E. Salakpi, Heiko Balzter, Heiko Balzter, Alexander S. Antonarakis   +5 more
doaj   +1 more source

Mastcam‐Z Spectrophotometric Properties of Materials at the Van Zyl Overlook, Jezero Crater

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract During Sols 63–65 of Mars 2020, Mastcam‐Z multispectral (442–1022 nm) images were acquired at Van Zyl Overlook (VZO), spanning phase angles from ∼0° to 150°, to model photometric parameters for seven surface units. These units included rocks, soils, regolith, and rover tracks near the Jezero landing site.
B. Margara, J. R. Johnson, A. G. Hayes, M. T. Lemmon, W. M. Grundy, J. F. Bell III, M. N. Barrington   +6 more
wiley   +1 more source

Accelerated Hyperspectral Unmixing with Endmember Variability via the Sum-Product Algorithm

, 2016
The rich spectral information captured by hyperspectral sensors has given rise to a number of remote sensing applications, ranging from vegetative assessment and crop health monitoring, to military surveillance and combatant identification.
Puladas, Charan
core