Results 91 to 100 of about 1,165,369 (212)

Depositional History of the Namibian Mud Belt Reveals Late Holocene Weakening of the Benguela Coastal Current

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract We investigate late Holocene changes in the northern Benguela Upwelling System using a multi‐proxy approach on shallow shelf deposits from the Namibian mud belt. Three sediment cores characterized by organic carbon‐rich, anoxic, and partly gas‐bearing sediments were retrieved along a sampling transect at 23°S in August 2019.
Michael Kossack, Chloe H. Anderson, Nikolas Römer‐Stange, Jürgen Titschack, Florian Scholz, Matthias Zabel   +5 more
wiley   +1 more source

Endmember spectral variability and index determination for retrieving fractional vegetation cover in the Loess Plateau

International Soil and Water Conservation Research
Accurate remote sensing retrieval of fractional vegetation cover (FVC) of photosynthetic vegetation (PV) and non-photosynthetic vegetation (NPV) is essential for assessing regional soil erosion.
Liang He, Du Lyu, Xiaoping Zhang, Baoyuan Liu, Rui Li, Xihua Yang, Jose A. Gomez   +6 more
doaj   +1 more source

Implications of Thermal Weakening and Magma Compressibility for Volcano Monitoring

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Magmatic intrusion and volcanic deformation are traditionally approximated with an inflating cavity in an elastic halfspace. Various analytical models predict surface displacement as a function of pressure or volume change, depth, and elastic crustal properties.
A. Spang, A. Piccolo, M. Gerbault, B. J. P. Kaus, M. Thielmann   +4 more
wiley   +1 more source

Evaluating endmember and band selection techniques for multiple endmember spectral mixture analysis using post-fire imaging spectroscopy [PDF]

, 2018
Fire impacts many vegetated ecosystems across the world. The severity of a fire is major component in determining post-fire effects, including soil erosion, trace gas emissions, and the trajectory of recovery.
Veraverbeke, Sander, Carlos Ramirez, Ángeles Casas, Zachary Tane, Ustin, Susan, Dar Roberts, Tane, Zachary, Susan Ustin, Ramirez, Carlos, Roberts, Dar, Sander Veraverbeke, Casas, Ángeles, Veraverbeke, Sander; id_orcid   +12 more
core   +1 more source

Generative Simplex Mapping: Non-Linear Endmember Extraction and Spectral Unmixing for Hyperspectral Imagery

Remote Sensing
We introduce a new model for non-linear endmember extraction and spectral unmixing of hyperspectral imagery called Generative Simplex Mapping (GSM).
John Waczak, David J. Lary
doaj   +1 more source

The Impact of Double Subduction on Plate Velocity and Euler Pole Shifts: Insights From Spherical Subduction Models

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Same‐dip double subduction (SDDS), in which two parallel slabs dip in the same direction, has been linked to accelerated plate motion in both modern and ancient convergent systems, such as the Late Cretaceous Africa–Eurasia system. Yet a systematic framework for quantifying how SDDS alters plate kinematics in a large‐scale spherical geometry ...
Zonglin Guo, Adam F. Holt, Derya Gürer
wiley   +1 more source

Radiocarbon and Stable Carbon Isotopes Constrain Rapid Mixing and Deep Meltwater Influence on Dissolved Inorganic Carbon in an Arctic Fjord

Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract Increased freshwater discharge from Arctic glaciers modifies the carbonate chemistry of coastal fjords. We investigated the carbon isotopic composition (Δ14C and δ13C) of dissolved inorganic carbon (DIC) in Kongsfjorden, Svalbard, to evaluate how freshwater inputs and water‐mass exchange shape fjord carbon dynamics.
Ling Fang, Sunmin Oh, Agneta Fransson, Melissa Chierici, Jeomshik Hwang, Eun Jin Yang, Minkyoung Kim   +6 more
wiley   +1 more source

Soil Moisture Content Estimation From Hyperspectral Remote Sensing Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Because of its significant absorption power, especially in the shortwave infrared optical region, water dominates the optical reflectance properties of water-bearing materials.
Ketaki Vinay Jambhali, Bikram Koirala, Zakaria Bnoulkacem, Paul Scheunders   +3 more
doaj   +1 more source

Geometric Abundance Estimation Using Variable Endmembers for Hyperspectral Imagery

International Journal of Hybrid Information Technology, 2014
Abundance estimation is an important step of quantitative analysis of hyperspectral remote sensing data. Due to physical interpretation, sum-to-one and non-negativity constraints are generally imposed on the abundances of materials. This paper presents a geometric approach to fully constrained linear spectral unmixing using variable endmember sets for ...
Huadong Yang, Jubai An
openaire   +1 more source

Brine Entrainment During Ice Shell Growth on Icy Worlds

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract The role of ocean composition in governing ice shell growth and ocean longevity on icy satellites remains poorly constrained. To address this, we develop a thermomechanical model of small to mid‐sized icy worlds that simulates ice shell growth from a saline ocean, explicitly quantifying brine entrainment through a parameterization of reactive ...
Nina Gilkyson, Christian Huber, Erica Nathan, Jacob Buffo   +3 more
wiley   +1 more source