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(U-Th)/He thermochronology — methodology and a case study: dating of faulting in the Southern Alps
; Dani˘sík, Martin; Picotti, Vincenzo; Frisch, Wolfgang; Eynatten, Hilmar von; Castellarin, Alberto (11. Symposium "Tektonik, Struktur- und Kristallingeologie", 2006-03)
The radiogeic 4He isotope is continuously forming in the lithosphere mainly by the alpha-decay of U, Th and Sm. This decay process was discovered already at the beginning of the 20th century, and the first U/He dating ... -
Ultramafic Carbonated Melt‐ and Auto‐Metasomatism in Mantle Eclogites: Compositional Effects and Geophysical Consequences
; ; ; ; ; (Geochemistry, Geophysics, Geosystems, 2020-05-11)
The mineralogy, chemical composition, and physical properties of cratonic mantle eclogites with oceanic crustal protoliths can be modified by secondary processes involving interaction with fluids and melts, generated in ... -
Ultrasonic Echo Localization Using Seismic Migration Techniques in Engineered Barriers for Nuclear Waste Storage
; ; ; (Journal of Nondestructive Evaluation, 2021-11-18)
In the framework of non-destructive-testing advanced seismic imaging techniques have been applied to ultrasonic echo data in order to examine the integrity of an engineered test-barrier designed to be used for sealing an ... -
Un tuf volcanique semblable à l'Eltviller Tuff dans les loess de Hesbaye (Belgique) et du Limbourg néerlandais
(E&G – Quaternary Science Journal; Vol.31, No. 1)Ein vulkanischer Tuff ist in drei Lößprofilen von Ostbelgien (Rocourt und Lixhe) und niederländisch Limburg gefunden worden. Dieser Tuff kann mit dem Eltviller Tuff (Semmel 1967) korreliert werden. Daher können die Lößprofile ... -
Uncertainties in Kelvin Waves in ECMWF Analyses and Forecasts: Insights From Aeolus Observing System Experiments
; ; (Geophysical Research Letters, 2021-11-16)
The European Space Agency Earth Explorer mission Aeolus with the first spaceborne Doppler Wind Lidar onboard provides global coverage of wind profiles twice per day. This paper discusses the impact of assimilating Aeolus ... -
Uncertainty in Aerosol Optical Depth From Modern Aerosol‐Climate Models, Reanalyses, and Satellite Products
; ; ; ; ; ; (Journal of Geophysical Research: Atmospheres, 2022-01-18)
Despite the implication of aerosols for the radiation budget, there are persistent differences in data for the aerosol optical depth (τ) for 1998–2019. This study presents a comprehensive evaluation of the large‐scale ... -
Uncertainty Quantification for Machine Learning‐Based Ionosphere and Space Weather Forecasting: Ensemble, Bayesian Neural Network, and Quantile Gradient Boosting
; ; (Space Weather, 2023-10-04)
Abstract Machine learning (ML) has been increasingly applied to space weather and ionosphere ...
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Uncharted risk measures for the management of sustainable mining
; ;; ; (Integrated Environmental Assessment and Management, 2023-04-12)
Abstract Governments commit to ensuring the welfare of their citizens by drafting and enforcing ...
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Underground hyperspectral outcrop scanning for automated mine‐face mapping: The lithium deposit of Zinnwald/Cínovec
; ; ; ; ; ; ; ; ; ; (The Photogrammetric Record, 2023-08-28)
Abstract The inherent complexity of underground mining requires highly selective ore extraction ...
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Understanding crop processing and its social meaning in the Xinzhai period (1850–1750 cal bce): a case study on the Xinzhai site, China
; ; ; (Vegetation History and Archaeobotany, 2021-09-03)
Although the Xinzhai period (1850–1750 cal bce) has been widely regarded as a critical time for the development of urbanization in China, little is known about the labour and social organization of the time. In this paper, ... -
Understanding Forest Health with Remote Sensing - Part I - A Review of Spectral Traits, Processes and Remote-Sensing Characteristics
(Remote Sensing, 2016)Anthropogenic stress and disturbance of forest ecosystems (FES) has been increasing at all scales from local to global. In rapidly changing environments, in-situ terrestrial FES monitoring approaches have made tremendous ... -
Understanding Forest Health with Remote Sensing-Part II—A Review of Approaches and Data Models
(Remote Sensing, 2017)Stress in forest ecosystems (FES) occurs as a result of land-use intensification, disturbances, resource limitations or unsustainable management, causing changes in forest health (FH) at various scales from the local to ... -
Understanding Micropolar Theory in the Earth Sciences I: The Eigenfrequency $\omega_r$
; (Pure and Applied Geophysics, 2021-12-25)
Even though micropolar theories are widely applied for engineering applications such as the design of metamaterials, applications in the study of the Earth’s interior still remain limited and in particular in seismology. ... -
Understanding Micropolar Theory in the Earth Sciences I: The Eigenfrequency ωr
; (Pure and Applied Geophysics, 2021-12-25)
Even though micropolar theories are widely applied for engineering applications such as the design of metamaterials, applications in the study of the Earth’s interior still remain limited and in particular in seismology. ... -
Understanding Micropolar Theory in the Earth Sciences I: The Eigenfrequency ωr
; (Pure and Applied Geophysics, 2021-12-25)
Even though micropolar theories are widely applied for engineering applications such as the design of metamaterials, applications in the study of the Earth’s interior still remain limited and in particular in seismology. ... -
Understanding Micropolar Theory in the Earth Sciences II: The Seismic Moment Tensor
; (Pure and Applied Geophysics, 2021-11-05)
Seismic events produced by block rotations about vertical axis occur in many geodynamic contexts. In this study, we show that these rotations can be accounted for using the proper theory, namely micropolar theory, and a ... -
Understanding summer wind systems over the eastern Mediterranean in a high‐resolution climate simulation
; ; ; ; ; (International Journal of Climatology, 2022-06-23)
Regional and local wind systems are often complex, particularly near coastal areas with a highly variable orography. Thus, the realistic representation of regional wind systems in weather and climate models is of strong ... -
Understanding the Extreme Spread in Climate Sensitivity within the Radiative-Convective Equilibrium Model Intercomparison Project
; (Journal of Advances in Modeling Earth Systems, 2020)
The Radiative-Convective Equilibrium Model Intercomparison Project (RCEMIP) consists of simulations at three fixed sea-surface temperatures (SSTs: 295, 300, and 305 K) and thus allows for a calculation of the climate ... -
Understanding the geobiology of the terminal Ediacaran Khatyspyt Lagerstätte (Arctic Siberia, Russia)
; Love, Gordon D.; Rogov, Vladimir I.; Melnik, Dmitry S.; Blumenberg, Martin; Grazhdankin, Dmitriy V. (Geobiology, 2020)
The Khatyspyt Lagerstätte (~544 Ma, Russia) provides a valuable window into late Ediacaran Avalon-type ecosystems with rangeomorphs, arboreomorphs, and mega-algae. Here, we tackle the geobiology of this Lagerstätte by the ...
