Results 101 to 110 of about 835 (219)

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

The Successive Projection Algorithm (SPA), an Algorithm with a Spatial Constraint for the Automatic Search of Endmembers in Hyperspectral Data

Sensors, 2008
Spectral mixing is a problem inherent to remote sensing data and results in fewimage pixel spectra representing "pure" targets. Linear spectral mixture analysis isdesigned to address this problem and it assumes that the pixel-to-pixel variability in ...
D. M. Rogge, Benoit Rivard, Jinkai Zhang
doaj  

Spatial Distribution of Lufeng Dinosaur Valley Outcrops Based on the GF-5 Hyperspectral OS–SPA–SVM Model

Journal of Spectroscopy
This study presents a novel approach to identifying the spatial distribution of geological outcrops using remote sensing, with the Lufeng Dinosaur Valley in China as the focal area. We integrate GF-5 hyperspectral imagery with the automated morphological
Lin Hu, Yu Lu, Shu Gan, Xiping Yuan, Cheng Chen, Zhifu Zhu   +5 more
doaj   +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

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

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

Hyperspectral Endmember Extraction Techniques

, 2020
Karbhari V. Kale, Mahesh M. Solankar, Dhananjay B. Nalawade   +2 more
openaire   +2 more sources

Spectral Characterization of CO2‐H2O Ice Layering Under Controlled Mars Polar Conditions as Laboratory Analogs for Seasonal Cap Activity

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Seasonal CO2 and H2O ice blanket the Martian polar caps, and their spectral contributions mix during seasonal evolution. Particularly in late northern winter, the spectral signature of H2O ice obscures that of CO2 ice. Using the MARVIN chamber at York University, we produced controlled analogs of layered polar ice under Mars‐like pressure (∼6 ...
Jamie A. Isen, Andrej Stojanovic, Wendy M. Calvin, Isaac B. Smith   +3 more
wiley   +1 more source