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Showing 9101 to 9150 of 22070 works
Monitoring the Evolution of Agricultural Growth in an Arid Area in Northwest Mexico Using Free Tools in the Cloud
Chihuahua State, in northwestern Mexico, has had strong growth in its irrigated agriculture, going from 2010 – 2018 of 461,099 to 597,222 ha. Although the total area planted has d…
Modeling Water-Steam Flow in Fractured Reservoirs: Application to Enhanced Geothermal Systems
A water-steam two-phase fractured geothermal reservoir model is presented in this paper. Coupled flow and thermal processes are solved in the reservoir and fractures using the pre…
Voluntary versus state-based compliance markets in the United States
In the United States, voluntary and compliance carbon markets are being created there is an effort to match producers of carbon credits with those that would like to purchase cred…
COVID, Climate and the Politics of Gender
The increasing role of women in leadership roles may be both a cause and effect of public attitudes. Recent politicization of science amidst increasing polarization of American po…
Mapping Heat Vulnerability Index Based on Different Urbanization Levels in Nebraska, USA
Heatwaves cause excess mortality and physiological impacts on humans throughout the world, and climate change will intensify and increase the frequency of heat events. Many adapta…
American Geophysical Union input on Improving Federal Scientific Integrity Policies
The American Geophysical Union (AGU) is pleased to submit this RFI response to 2021-13640 on improving federal scientific integrity policies. AGU is the largest global organizatio…
How sphericity combines with the age and width of slabs to dictate the dynamics and evolution of subduction systems on …
The role of Earth’s spherical geometry in modulating the evolution of subduction zones is poorly understood. Here, we simulate multi-material free-subduction in a 3-D spherical sh…
Towards the end of drying of granular materials: enhanced evaporation and drying-induced collapse
We experimentally study the drying of loosely packed wet glass beads at low initial water content. The drying rate is found to decrease at the start, corresponding to the decreasi…
Trees talk tremor - Wood anatomy and δ13C content reveal contrasting tree-growth responses to earthquakes
Moderate to large earthquakes can increase the amount of water feeding stream flows, raise groundwater levels, and thus grant plant roots more access to water in water-limited env…
International Community Guidelines for Sharing and Reusing Quality Information of Individual Earth Science Datasets
The knowledge of data quality and the quality of the associated information, including metadata, is critical for data use and reuse. Assessment of data and metadata quality is key…
Effectiveness of gap-filling in tropical tree canopy cover modelling using Landsat time series
Satellite-based land surface phenology information (e.g. time-series spectral metrics and seasonal composites) can be used to model tropical tree canopy cover (TCC) but is limited…
Investigating the Causes and Impacts of Convective Organization in a High Resolution Atmospheric GCM
A ~ 50 km resolution atmospheric general circulation model (GCM) is used to investigate the impact of radiative interactions on spatial organization of convection, the model’s mea…
Upper Ocean Dynamics Select for Synechococcus Light Color Generalists
The ocean has many underwater light niches, but the selection pressure for chromatic acclimaters (generalists) compared to blue or green-specialists is not well understood. Here, …
Internal and external modulation of folding rates with 104 to 105 year time resolutions from growth strata, Pico del Ag…
High-resolution cyclostratigraphy in growth strata are used to reconstruct unsteady folding rates at the regional-scale Pico del Aguila anticline, southern Pyrenees, to evaluate d…
Transient behavior of the Asian summer monsoon anticyclone associated with eastward eddy shedding
The Asian monsoon anticyclone (AMA) exhibits a trimodal distribution of sub-vortices and the western Pacific is one of the preferred locations. Amplification of the western Pacifi…
Improved consistency between the modelling of ocean optics, biogeochemistry and physics, and its impact on the North-We…
We use a recently developed spectrally resolved bio-optical module to better represent the interaction between the incoming irradiance and the heat fluxes in the upper ocean withi…
Quantifying the uncertainty in CME kinematics derived from geometric modelling of Heliospheric Imager data
Geometric modelling of Coronal Mass Ejections (CMEs) is a widely used tool for assessing their kinematic evolution. Furthermore, techniques based on geometric modelling, such as E…
Investigation of Soil-Water Characteristic Curves for Compacted Bentonite Considering Dry Density
Deep geological repositories are often considered for the disposal of high-level radioactive waste (HLW). HLW should be disposed of safely and permanently using two barrier system…
A QBO cookbook: Sensitivity of the Quasi-Biennial Oscillation to resolution, resolved waves, and parameterized gravity …
An intermediate complexity moist General Circulation Model is used to investigate the sensitivity of the Quasi-Biennial Oscillation (QBO) to resolution, diffusion, tropical tropos…
Thermo-poro-mechanics of chemically active faults -enriching Anderson's theory of faulting in sedimentary rocks
A suggested model to explain the episodic nature of slow earthquakes involves shear zones exhibiting rate-and temperature-dependent frictional behaviour hosting fluid-release chem…
A novel deep convolutional neural network approach for large area satellite time series land cover classification
The state of the practice for large area land cover mapping is based on the application of supervised classifiers to multi-temporal multi-spectral optical wavelength data. Deep le…
Axially Asymmetric Steady State Model of Jupiter's Magnetosphere-Ionosphere Coupling
We present an axially asymmetric steady state model of Jupiter’s magnetosphere-ionosphere coupling with variable ionospheric conductivity dependent on the field-aligned current de…
Superposed Epoch Analysis of Nighttime Magnetic Perturbation Events Observed in Arctic Canada
Rapid changes of magnetic fields associated with nighttime magnetic perturbation events (MPEs) with amplitudes |ΔB| of hundreds of nT and 5-10 min duration can induce geomagnetica…
Atmospheric wind biases: A challenge for simulating the Arctic Ocean in coupled models?
Many state-of-the-art climate models do not simulate the Atlantic Water (AW) layer in the Arctic Ocean realistically enough to address the question of future Arctic Atlantificatio…
Interpreting the Dependence of Cloud-Radiative Adjustment on Forcing Agent
Effective radiative forcing includes a contribution by rapid adjustments, i.e. changes in temperature, water vapour and clouds that modify the energy budget. Cloud adjustments in …
Why is El Niño warm?
The geographic rearrangement of the tropical oceanic and atmospheric circulation during an El Niño event is associated with a well-understood strong surface warming of the climato…
MAVEN Survey of Magnetic Flux Rope Properties in the Martian Ionosphere: Comparison with 3 Types of Formation Mechanisms
Flux ropes are a magnetic field phenomenon characterized by a filament of twisted magnetic field with an axial core and outer helical wraps. They form in the Martian ionosphere vi…
Machine learning based prediction of channelisation during dissolution of carbonate rocks
Evolving preferential dissolution channels are common features formed during reactive fluid flow in carbonate rocks. Understanding these is of particular importance in application…
Machine Learning for Clouds and Climate (Invited Chapter for the AGU Geophysical Monograph Series “Clouds and Climate”)
Key Points: • Machine learning (ML) helps model the interaction between clouds and climate using large datasets. • We review physics-guided/explainable ML applied to cloud-related…
Near surface properties derived from Phobos transits with HP RAD³ on InSight, Mars
We use the surface temperature response to Phobos transits as observed by a radiometer on board of the InSight lander to constrain the thermal properties of the uppermost layer of…
Drought analysis for the Seyhan Basin with NDVI and VCI vegetation indices
Various drought indices have been developed to monitor the drought, which is one of the results of climate change and mitigates its adverse effects on water resources, especially …
ON MODEL OF PLATE BREAKUP
The five-stage model of plate breakup can explain the linear characteristics of rift valleys and oceanic ridges, which other hypotheses in terms of mantle convection, hot-spots an…
One-Sided Joint Inversion of Shear Velocity and Resistivity from the PI-LAB Experiment at the Equatorial Mid-Atlantic R…
The lithosphere-asthenosphere system is fundamental to our understanding of mantle convection and plate tectonics. Seismic and electromagnetic methods are our primary means of det…
Segmentation and Holocene Behavior of the Middle Strand of the North Anatolian Fault (NW Turkey)
The North Anatolian fault in the Marmara region is composed of three parallel strands all separated by ~50 km. The activity of the middle strand, which borders the southern edge o…
The anelasticity of zinc and its implications for the Earth's inner-core
Seismic observations of the Earth’s inner-core testify to it being both a complex and dynamic part of the Earth. It exhibits significant variation in seismic attenuation and veloc…
Tidal Triggering of Microseismicity at the Equatorial Mid-Atlantic Ridge, Inferred from OBS Network
The gravitational pulls from the moon and the sun result in tidal forces which influence both Earth’s solid and water mass. These stresses are periodically added to the tectonic o…
Continental interior storm tracks, tritium deposition, and precipitation isotopes at the Great Basin-Rocky Mountain phy…
Thirteen years of precipitation d 2 H, d 18 O, and 3 H data for three western United States continental interior weather stations, supplemented with 60 years of precipitation data…
Temporal and Spatial Evaluation of Drought in Agricultural Stability Zones in Syria between 1992 and 2018 by Using SPI …
This study used data of 165 rain stations for mapping SPI index for winter season at the base of 7 months period (from November to next April). For compensating the lost measureme…
Impact of Lagrangian Sea Surface Temperature Variability on Southern Ocean Phytoplankton Community Growth Rates
Ocean phytoplankton play a critical role in the global carbon cycle, contributing ~50% of global photosynthesis. As planktonic organisms, phytoplankton encounter significant envir…
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the construction of the rovers is broadly linked to the environment , geographic situation into outer space , available materials and it is based on the techniques and the methods…
The variations in potential evapotranspiration and the effects of environmental changes in a humid subtropical region
Potential evapotranspiration (ETp) measures the ability of the atmosphere to remove water from the surface by evaporation and transpiration. Because the reference evapotranspirati…
Energetic charged particles in the terrestrial magnetosphere: Cluster/RAPID results
Energetic charged particles ~>40 keV can affect the plasma temperature and pressure and as a consequence the whole dynamics of the magnetosphere. How do particles get to such ener…
Holocene depositional history inferred from single-grain luminescence ages in southern California, North America.
Significant sediment flux and deposition in a sedimentary system are influenced by climate changes, tectonics, lithology, and the sedimentary system’s internal dynamics. Identifyi…
Bayesian Estimation of Surface Strain Rates from GNSS Measurements: application to the Southwestern US
Seismic hazard assessment in active fault zones can benefit of strain rate measurements derived from geodetic data. Producing a continuous strain rate map from discrete data is an…
Uncertainties in Shoreline Projections to 2100 at Truc Vert beach (France): Role of Sea-Level Rise and Equilibrium Mode…
Ensemble-based simulations of future shoreline evolution to 2100, including sea-level rise driven erosion, are performed and analysed Future shoreline projections uncertainties …
Quantifying Intrinsic and Extrinsic Contributions to Seismic Anisotropy in Tomographic Models
Seismic anisotropy in the Earth’s mantle inferred from seismic observations is usually interpreted either in terms of intrinsic anisotropy due to Crystallographic Preferred Orient…
Contrasting responses of soil inorganic carbon to afforestation in acidic versus alkaline soils
Afforestation has been suggested as an effective ecological engineering approach for carbon sequestration and environmental benefits. However, the impact of afforestation on soil …
A method for applying lateral surface eddy diffusion in ocean models with a general vertical coordinate
The mixing of tracers by mesoscale eddies, parameterized in many ocean general circulation models (OGCMs) as a diffusive process, contributes significantly to the distribution of …
Aridification risks of global ecohydrological element increases under climate change
Drought is the most widespread climatic extreme that has negative impacts on ecohydrology. Studies have shown that drought cause certain degrees of disturbances to different ecohy…
3D Printing the Magnetosphere
The 3D Printed Magnetosphere Project is a collaboration between Aurorasaurus and the NASA STEAM Innovation Lab, both partners of the NASA Space Science Education Consortium (NSSEC…
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