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Showing 11151 to 11200 of 22070 works
Non-Gaussian parameter inference for hydrogeological models using Stein Variational Gradient Descent
The sustainable management of groundwater demands a faithful characterization of the subsurface. This, in turn, requires information which is generally not readily available. To b…
Deformation behavior and inferred seismic properties of tonalitic migmatites at the time of pre-melting, partial meltin…
As seismic data from the lower crust becomes more readily available, it is import ant to link seismic properties to the ongoing processes within lower crustal evolution. It includ…
Non-Volcanic Earthquake Swarm Near the Harrat Lunayyir Volcanic Field, Saudi Arabia
Understanding the origin of seismic swarms can be controversial, especially when they occur near volcanic areas. Here, we investigate a seismic sequence which is steadily active i…
The anomalously small 2019 Antarctic ozone hole in an assimilation of MLS observations with the GEOS Constituent Data A…
A rare disturbance of the stratospheric Antarctic polar vortex in September 2019 led to a significantly higher than usual polar total ozone column. We use assimilation of ozone, H…
Borehole-based characterization of deep crevasses at a Greenlandic outlet glacier
Optical televiewer borehole logging within a crevassed region of fast-moving Store Glacier, Greenland, revealed the presence of 35 high-angle planes that cut across the background…
Tectono-stratigraphic framework of late Paleoproterozoic to Cambrian strata of the Quánjí block and its role in the dev…
The Quánjí Block (QB) is a sliver of anomalously old and well-preserved continental crust embedded within the Paleozoic-Mesozoic tectonic collage of the northeastern Tibet Plateau…
Experimental simulation of Titan’s stratospheric photochemistry: benzene (C6H6) ices
We performed laboratory experiments to the photochemical evolution induced by long-UV radiations of benzene ices in Titan’s atmosphere. The aim of this study was to investigate if…
Seismic Velocities Distribution in a 3D Mantle: Implications for InSight Measurements
The InSight mission [1] landed in November 2018 in the Elysium Planitia region [2] bringing the first geophysical observatory to Mars. Since February 2019 the seismometer SEIS [3]…
Longitudinally-Dependent Low-Latitude Ionospheric Disturbances Linked to the Antarctic Sudden Stratospheric Warming of …
The strongest Southern Hemisphere minor sudden stratospheric warming (SSW) in the last 40 years occurred in September 2019 and resulted in unprecedented weakening of the stratosph…
Demonstration and Analysis of Rarefied Particle Motions on Hillslopes
During the last century, descriptions of sediment transport on the surface of Earth have been mostly deterministic and strongly influenced by concepts from continuum mechanics. Th…
Automatic seismic waveform identification using a Convolutional Neural Network
Typical seismic waveform datasets comprise from hundreds of thousands to several millions records. Compilation is performed by time-consuming handpicking of phase arrival times, o…
Analysis of climate and vegetation variability on erosion using a coupled dynamic vegetation and landform evolution mod…
Variability in precipitation frequency, intensity and duration deeply affect vegetation and erosion yields. Under climate change scenarios, alterations in precipitation are expect…
Expanded stream-aquifer interface model constrained by time-lapse seismic
Estimating evolution of exchanges within the stream-aquifer interface is frequently tackled with the help of numerical models. Yet, the definition of boundary conditions is genera…
Modeling Multiphase Flow Within and Around Deformable Porous Materials: A Darcy-Brinkman-Biot Approach
We present a new computational fluid dynamics approach to simulating two-phase flow in hybrid systems containing solid-free regions and deformable porous matrices. Our approach is…
Creation of a mixed-mode fracture network at meso-scale through hydraulic fracturing and shear stimulation
Enhanced Geothermal Systems could provide a substantial contribution to the global energy demand if their implementation could overcome inherent challenges. Examples are insuffici…
Does low-viscosity fracturing fluid always create complex fractures?
Lower-viscosity fluids are commonly believed to be able to create more complex fractures in hydraulic fracturing, however, the mechanism remains stubbornly unclear. We use a new g…
On the P-to-S ratio of seismicity around the Mount St. Helens
Accurate measurements of P/S ratios at local-regional scale are often challenged by near-distance failure and/or sparse monitoring. During June 2014 - Aug. 2016 (iMUSH project), t…
Evaluation of the WRF-lake model at a large dimictic reservoir: A comparison with field data and another water temperat…
The one-dimensional (1D) lake model, a submodule in the Weather Research and Forecasting (WRF) system (WRF-lake) was evaluated in a large dimictic reservoir, Miyun Reservoir, in n…
Magnetospheric flux transport in the Dungey cycle during 2010
We quantify the contributions of different convection states to the magnetic flux throughput of the magnetosphere during 2010. To do this we provide a continuous classification of…
Stirring of sea ice meltwater enhances submesoscale fronts in the Southern Ocean
In the sea ice-impacted Southern Ocean, the spring melt of sea ice modifies the upper ocean. These modified waters subduct and enter the global overturning circulation. Submesosca…
Along the Mighty Quinn: Palaeoclimates and Human Occupation in the Quinn River Drainage
The Upper and Lower Quinn River subbasins (HUC-8 16040201,16040202) comprise one of the largest single drainages in northwest Nevada. The sub-basins cover approximately 1.7 millio…
Paleoaltimetry estimates suggest low surface elevations for the mid-Cretaceous Newark Canyon Formation within the Sevie…
The retroarc of the North American Cordilleran orogen in Nevada and Utah has been divided into the frontal Sevier fold-thrust belt in Utah, which accommodated shortening between ~…
Improving machine learning-based weather forecast 1 post-processing with clustering and transfer learning
Machine learning has been widely applied in numerical weather prediction, but the incorporation of new observational sites into models trained on stations with long historical rec…
Combined modelling of US fluvial, pluvial and coastal flood hazard under current and future climates
This paper reports a new and significantly enhanced analysis of US flood hazard at 30m spatial resolution. Specific improvements include updated hydrography data, new methods to d…
Cost-effective implementation of the Paris Agreement using flexible greenhouse gas metrics
Greenhouse gas (GHG) emission metrics, that is, conversion factors to evaluate the emissions of non-CO2 climate forcers on a common scale with CO2, serve crucial functions upon th…
Thermodynamics of Liquid MgSiO 3 at High Pressure and Temperature
Studying the properties of the liquid phase of minerals at high pressure is important to understand the structure and evolution of deep magma oceans, as well as guiding high press…
Calving of a large Greenlandic tidewater glacier has complex links to meltwater plumes and mélange
Calving and solid ice discharge into fjords account for approximately half of the annual net ice loss from the Greenland Ice Sheet, but these processes are rarely observed. To gai…
Development and application of a 1-km hourly air-temperature model for the Northeastern and Mid-Atlantic United States …
Background: Accurate and precise estimates of ambient air temperatures that can capture fine-scale within-day variability are necessary for studies of air temperature and health. …
A Statistical Comparison of Global MHD Simulations and Geomagnetic Storm Indices
Space weather monitoring and predictions largely rely on ground magnetic measurements and geomagnetic indices such as the Disturbance Storm Time index (Dst or SYM-H), Auroral Elec…
Global Measurements of Brown Carbon and Estimated Direct Radiative Effects
Brown carbon (BrC) is an organic aerosol material that preferentially absorbs light of shorter wavelengths. Global-scale radiative impacts of BrC have been difficult to assess due…
Northland: the climate of a world with a hemispheric continent and a hemispheric ocean
Join us in an exploration of the climate of Northland, a world where the entire northern hemisphere is covered by a continent, and the entire southern hemisphere is covered by an …
Locating Basal Microseismicity in Rutford Ice Stream, West Antarctica using QuakeMigrate, for Statistical Pattern Recog…
The Antarctic Ice Sheet remains one of the greatest sources of uncertainty for improving predictions of sea level rise, and constraining this uncertainty has long been a difficult…
Hillslopes in Headwaters of Qinghai-Tibetan Plateau as Hotspots for Dissolved Organic Carbon Processing during Permafro…
Climate warming has accelerated thawing of frozen soil in the northern permafrost, supplying dissolved organic carbon (DOC) to streams and rivers with uncertain fate. Although rec…
Effects of surface and top wind shear on the spatial organization of marine Stratocumulus-topped boundary layers
The convective nature of Stratocumulus topped boundary layers (STBL) involves the motion of updrafts and downdrafts, driven by surface fluxes and radiative cooling, respectively. …
Growin: Modeling Ionospheric Instability Growth Rates During Solar Minimum and Giving Away the Code
Growin is a module that calculates the flux-tube-integrated linear Rayleigh-Taylor instability (grow)th rate of (i)o(n)ospheric irregularities is often used in the study of equato…
Simulations of gravitoelastic correlations for the Sardinian candidate site of the Einstein Telescope
Gravity fluctuations produced by ambient seismic fields are predicted to limit the sensitivity of the next-generation, gravitational-wave detector Einstein Telescope at frequencie…
Increased Drag Coefficient in Estuarine Channels with Curvature
Flow separation has been observed and studied in sinuous laboratory channels and natural meanders, but the effects of flow separation on along-channel drag are not well understood…
Natural and Anthropogenic Influences on Nutrient Export from Tropical Mountainous Rivers into the Arabian Sea
The land-sea connection of nutrients via rivers is an essential component in the global nutrient biogeochemistry. Rivers alone transport approximately 80% of the dissolved nutrien…
Formulation of a consistent multi-species canopy description for hydrodynamic models in mixed-forests
Representation of canopy and tree function in earth system models (ESMs) is going through rapid advancements in the last decade. The simplistic big-leaf representation of canopy i…
Proper b-value Estimation Method in Rock Acoustic Emission Testing
The power-law relationship has been regarded as the fundamental description of the size distribution from large-scale-earthquake to small-scale-laboratory rock ruptures. However, …
Spring Sea ice forecasts and Bering Sea Indigenous marine mammal harvests
Reliable, high-resolution sea ice forecasts may help contribute to safety of Indigenous marine mammal hunting and community travel in the Arctic. At the same time, sea ice forecas…
Coupling Advanced Forest Carbon Science with University Climate Action Planning
In support of the American College & University Presidents’ Climate Leadership Commitments, the University of Maryland College Park (UMD) has established a goal to become climate …
First authorship gender gap in the geosciences
Although gender parity has been reached at the graduate level in the geosciences, women remain a minority in top-level positions. First authorship of peer-reviewed scholarship is …
Terahertz and Photonics Seamless Short-Distance Links for Future Mobile Networks
High-speed data transfer and high-performance imaging can be realized by using radio-waves in high-frequency bands, such as millimeter-waves and THz-waves, where wide frequency ba…
Photochemistry of Methane and Ethane in the Martian Atmosphere
We develop an existing 1-D photochemistry model to include a comprehensive description of organic chemistry on Mars that includes the oxidation products of methane (CH$_4$) and et…
Scaling Analysis of Two-Phase Flow in Fractal Permeability Fields
Fluid mixing in permeable media is essential in many practical applications. The mixing process is a consequence of velocity fluctuations owing to geological heterogeneities and m…
Stable oxygen isotope composition is biased by shell calcification intensity in planktonic Foraminifera
Planktonic Foraminifera are widely used for environmental reconstructions through measurements of their shell’s geochemical characteristics, including its stable oxygen and carbon…
Convective and Tectonic Plate Velocities in a Mixed Heating Mantle
Mantle convection is driven by the transport of heat from a planetary interior. This heat may come from the internal energy of the mantle or may come from the core beneath and in …
P-wave Reflectivity of the Crust and Upper Mantle Beneath the Southern Appalachians and Atlantic Coastal Plain using Gl…
Reflection profiles generated using PKPdf as a virtual source show laterally continuous reflections from structures at depths less than 1 km to roughly 200 km beneath the southern…
SeisDARE: an open access seismic data repository
Seismic reflection data (normal incidence and wide-angle) are unique assets for Solid Earth Science. They provide critical information about the physical properties and structure …
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