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Showing 33501 to 33550 of 59105 works
Scheduling of Twin Telescopes and the Impact on Troposphere and UT1 Estimation
Recently, several VGOS twin telescopes in Europe were completed. We examine the use of VGOS twin telescopes by a new scheduling approach. This ap- proach is based on integer linea…
Vom frühmesozoischen Riftgraben zum intrakontinentalen Gebirge: konvergente Blattverschiebungstektonik im zentralen Mit…
Das auf paläozoischem Sockel lagernde mesozoische Deckgebirge des NE/SW-streichenden zentralen Mittleren Atlas in Marokko ist durch eine Gruppe N 045° -streichender Blattverschieb…
Comment on ‘Unintentional unfairness when applying new greenhouse gas emissions metrics at country level’
Here, we provide a comment in response to a recently published paper ‘Unintentional unfairness when applying new greenhouse gas emissions metrics at country level’ by Rogelj and S…
Fluid surface coverage showing the controls of rock mineralogy on the wetting state
The wetting state is an important control on flow in subsurface multi fluid phase systems, e.g., carbon storage and oil production. Advances in X-ray imaging allow us to character…
Reframing Lake Geneva ecological trajectory in a context of multiple but asynchronous drivers
There are no doubts long-term observatories provide unique insight on ecosystems trajectories. Can we use earliest data to set restoration goals? We take the example of Lake Genev…
Die Kreide des zentralen Mittleren Atlas und der Haute Moulouya, Marokko: Stratigraphie, Mikrofazies, Paläogeographie u…
Die Kreidesedimentation des zentralen Mittleren Atlas und der sich südlich anschließenden Haute Moulouya vollzog sich in einer faziell sehr differenzierten Ausbildung. Die Faziesw…
Geowissenschaftliche Mitteilungen - GMIT 96
Die Ausgabe der Geowissenschaftlichen Mitteilungen vom Juni 2024 enthält die Themenblöcke: GEOfokus: Die Ur-Ems – ein Fluss legt sich zurück -Vom Ende der Eiszeit zurück in die Zu…
Characterisation and controls on mineral-sorbed organic matter from a variety of groundwater environments
Detailed investigations into natural groundwater organic matter (OM) as carbon sources or sinks in the natural carbon cycle are generally limited. Groundwater OM concentration and…
Geowissenschaftliche Mitteilungen - GMIT 15
Die Ausgabe der Geowissenschaftlichen Mitteilungen vom März 2004 enthält die Themenblöcke: Geofokus: Impaktkrater auf der Erde - Spuren des kosmischen Bombardements, Geoaktiv (Wir…
Policy Bridge: Air Quality Impacts from Oil and Natural Gas Development in Colorado
The rise of hydraulic fracturing techniques has fostered rapid growth of oil and natural gas extraction in areas across the United States. In the Denver-Julesburg Basin (DJB), wh…
Four-dimensional surface motions of the Slumgullion landslide and quantification of hydrometeorological forcing
Landslides modify the natural landscape and cause fatalities and property damage worldwide. Quantifying landslide dynamics is challenging due to the stochastic nature of the envir…
Future heat extremes likely to have been underestimated
In a warming world, temperature extremes are expected to show a distinguishable change over much of the globe1 and in many regions this change has already been detected in observa…
Open Access publishing practice in Geochemistry: current state and look to the future
Open Access (OA) describes the free, unrestricted access to and re-use of research articles. Recently, a new wave of interest, debate, and practice surrounding OA publishing has e…
Marked upwelling and SST drop after the arrival of cyclone Dorian to the Atlantic Canadian coast
In intertidal environments, temperature fluctuations at hourly temporal scales are ecologically relevant because of the physiological stress that organisms must endure as a result…
U-Th dating of lake sediments: Lessons from the 700 kyr sediment record of Lake Junín, Peru
*----- NOTE: This is a peer reviewed preprint of a paper accepted in Quaternary Science Reviews as of June 8, 2020 -----* Deep sediment cores from long-lived lake basins are funda…
Ferruginous oceans during OAE1a and collapse of the marine sulfate pool
Seawater sulfate is one of the largest oxidant pools at Earth’s surface today and its concentration in the oceans is generally assumed to have varied between 5 and 28 mM since the…
The interplay between clay fabric and mechanical response of deep-seated landslides
Deep-seated landslides are amongst the most devastating natural hazards on earth, typically involving a rigid rock mass sliding over a weak, clayey shear-band. The mechanical resp…
VOLKMAR ROWINSKY – Ehrenmitglied der DGMT
Laudatio anlässlich der Verleihung der Ehrenmitgliedschaft der Deutschen Gesellschaft für Moor- und Torfkunde (DGMT) an Volkmar Rowinsky.
Das Moorschutzfachkonzept Brandenburgs – wie gelingt der Klimaschutz auf Moorböden in der Praxis?
Die Bund-Länder-Zielvereinbarung Moorbodenschutz von 2021 gibt bis 2030 deutschlandweit 5 Mio. t CO2-eq./Jahr Emissionseinsparung aus Mooren vor, was für brandenburgische Moore ei…
Stratigraphie, Fazies und Paläogeographie des Jura am Südrand des zentralen Hohen Atlas (Marokko)
Die vorliegende Arbeit versucht, für ein Gebiet auf der Südseite des Zentralen Hohen Atlas bei Tinerhir die paläogeographische Entwicklung des Jura zu rekonstruieren und damit ein…
Notes on the creation and manipulation of solid solution models
A large class of solid solution models are built on the premise that exchange of chemical species takes place on a finite number of unique sites, and that the thermodynamic proper…
Stronger Atlantic hurricanes: Validating Elsner et al. (2008)
Using satellite derived wind speed estimates from tropical cyclones over the 25-year period 1981--2006, Elsner et al. (2008) showed the strongest tropical cyclones getting stronge…
Beitrag zur Theorie des Höhenkreises
research
Estimation of surface and deep flows from sparse SSH observations of geostrophic ocean turbulence using Deep Learning
Satellite altimeters provide global observations of sea surface height (SSH) and present a unique dataset for advancing our theoretical understanding of upper ocean dynamics and m…
A machine learning approach to tungsten prospectivity modelling using knowledge-driven feature extraction and model con…
Novel mineral prospectivity modelling presented here applies knowledge-driven feature extraction to a data-driven machine learning approach for tungsten mineralisation. The method…
An interpreted language implementation of the Vaganov-Shashkin tree-ring proxy system model
We describe the implementation of the Vaganov-Shashkin tree-ring growth model (VSM) in MATLAB. VSM, originally written in Fortran, mimics subdaily and daily resolution processes …
Evaluation and comparison of a machine learning cloud identification algorithm for the SLSTR in polar regions
A Feed Forward Neural Net (NN) approach to distinguish between clouds and the surface has been applied to the Sea and Land Surface Temperature Radiometer in polar regions. The mas…
Climate driven Holocene erosion in central Ukraine
The younger Quaternary erosion history was reconstructed in a catchment close to the Chalcolithic giant settlement Maidanetske, central Ukraine based on dated sediment sequences. …
Scaling Laws for Regional Stratification at the top of Earth’s Core
Seismic and geomagnetic observations have been used to argue both for and against a global stratified layer at the top of Earth’s outer core. Recently, we used numerical models of…
Advanced ML and AI Approaches for Proxy-based Optimization of CO2-Enhanced Oil Recovery in Heterogeneous Clastic Reserv…
Constructing a simpler model to represent a complex reservoir simulation that will be employed to define the optimum future development plans have been achieved through the use of…
Quantifying Computational Efficiency of Adaptive Mesh Refinement for Shallow Water Solvers
Non-uniform, dynamically adaptive meshes are a useful tool for reducing computational complexities for geophysical simulations that exhibit strongly localised features such as is …
Spatiotemporal correlation analysis of noise-derived seismic body waves with ocean wave climate and microseism sources
Seismic signals can be extracted from ambient noise wavefields by the correlation technique. Recently, a prominent P‐type phase was observed from teleseismic noise correlations in…
Dreibrodt et al.- Holocene erosion history in central Ukraine
The younger Quaternary erosion history was reconstructed in a catchment close to the Chalcolithic giant settlement Maidanetske, central Ukraine based on dated sediment sequences. …
No support for carbon storage of >1000 GtC in northern peatlands
Northern peatlands store large amounts of carbon (C) and have played an important role in the global carbon cycle since the Last Glacial Maximum. Most northern peatlands have esta…
Local and remote influences on the heat content of Southern Ocean mode water formation regions.
The Southern Ocean (SO) is a crucial region for the global ocean uptake of heat and carbon. There are large uncertainties in the observations of fluxes of heat and carbon between …
Accelerating numerical wave-propagation using wavefield adapted meshes, Part I: Forward and adjoint modelling
An order of magnitude speed-up in finite-element modelling of wave propagation can be achieved by adapting the mesh to the anticipated space-dependent complexity and smoothness of…
The economic implications of using a truly preindustrial climate baseline
The pervasive impacts of climate change can result in scientific decisions having unforeseen societal implications. To demonstrate this, we explore the global and regional economi…
Bayesian Models for Deriving Biogeochemical Information from Satellite Ocean Color
In this study, we present Bayesian machine learning approaches to predict the spectral phytoplankton absorption coefficient - a proxy of phytoplankton biomass - from top of atmosp…
Optical wave gauging using deep neural networks
We develop a remote wave gauging technique to estimate wave height and period from imagery of waves in the surf zone. In this proof-of-concept study, we apply the same framework t…
Abrupt Arctic Warming Repeatedly Led to Prolonged Drought and Glacial Retreat in the Tropical Andes During the Last Gla…
A sediment core spanning the last ~50 ka from Lake Junín (Peru) in the tropical Andes reveals abrupt climatic events on a centennial-millennial time scale. These events, which in…
Fossil fuel combustion is driving indoor CO2 toward levels harmful to human cognition
Human activities are elevating atmospheric carbon dioxide concentrations to levels unprecedented in human history. The majority of anticipated impacts of anthropogenic CO2 emissio…
A 2,000-year Bayesian NAO reconstruction from the Iberian Peninsula
The North Atlantic Oscillation (NAO) is the major atmospheric mode that controls winter European climate variability because its strength and phase determine regional temperature,…
Wind-driven evolution of the North Pacific subpolar gyre over the last deglaciation
North Pacific atmospheric and oceanic circulations are key missing pieces in our understanding of the reorganisation of the global climate system since the Last Glacial Maximum (L…
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