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Showing 12101 to 12150 of 22070 works
Effect of evolving biofilm structures on modeling the flow in bio-clogged porous media
The growth of biofilms changes the hydrodynamics of porous media, which will influence the transport of bacteria and contaminants in natural and engineered systems. Traditionally,…
The Tempest Within: Reconciling Disagreements on Climate-Conflict Links for Security Practitioners
How dire are the security implications of climate change? Research findings on the relationship between climate and conflict are diverse and contested, leaving policymakers of var…
Comparing three approaches to the inducing source setting for the ground electromagnetic field modeling due to space we…
Ground-based technological systems, such as power grids, can be affected by geomagnetically induced currents (GIC) during geomagnetic storms and magnetospheric substorms. This mot…
Simulating Preferential Flow by A Multi-dimensional Process-based HYDRUS Model
Preferential flow processes are controlled by subsurface structures with the hierarchical organization across scales, but there is a lack of multiscale model validation using the …
Year of emergence of ocean acidification in the Global Ocean
Year of emergence (YoE) is the year when an environment and the organisms within begin to experience significant different conditions (two times of natural variability) from the p…
Experimental Study on Multiphase Flow in Fracture-Vug Medium using 3D Printing Technology and Visualization Techniques
Strong heterogeneity and anisotropy exist in fractured-vuggy reservoirs, resulting in complex flow and relatively low oil recovery. Therefore, the mechanism of water flooding and …
Deep Ash Plumes Signal Ongoing or Recent Submarine Volcanic Eruptions, and Demonstrate a Syn-eruptive Process for Dispe…
The considerable challenges of accessing unpredictable events at remote seafloor locations make submarine eruptions difficult to study in real time. The serendipitous discovery of…
Seismicity rate changes and geodetic transients in Central Apennines
Using template matching and GPS data, we investigate the evolution of seismicity and observable deformation in Central Apennines. Seismicity appears more persistent at the base of…
Geodynamics and potentiality of large earthquakes in densely populated Bangladesh: Constrained from GPS
Bangladesh, a small and over populated country in Southeast Asia occupies most of the Bengal Basin that results from sediments derived from the collision of India with Asia. The b…
Mapping Vulnerability of Farming Communities to Winter Storms in Iowa
Driven by unusually warm air in the Arctic, severe winter weather moves down south to mid-latitude areas, reflecting the complexity in the ways that climate change may affect loca…
Hurricane flooding and water quality issues: opportunities for increased resilience
Hurricanes that cause damage to lives and property are often accompanied by poor water quality that threatens the health of human communities and aquatic species. North Carolina h…
Mesospheric Q2DW interactions with four migrating tides at 53$^\circ$N latitude: zonal wavenumber identification throug…
Mesospheric winds from two longitudinal sectors at 53$^\circ$N latitude are combined to investigate quasi-two-days (Q2DWs) and their nonlinear interactions with tides. In a summer…
A Deep Water Dispersion Experiment in the Gulf of Mexico
The Deep Water Horizon oil spill has dramatically impacted the Gulf of Mexico from the seafloor to the surface. While dispersion of contaminants at the surface has been extensivel…
Geochemical and C-O isotopic study of ophiolite-altered carbonates of the Barzaman Formation, Oman: Evidence of natural…
Carbonate mineral precipitation via capture of atmospheric CO 2 by alkaline-hyperalkaline waters offers a potential strategy-referred to as carbon capture and storage-to mitigate …
Weaker lithospheric dripduction into Archean TTG crust formation
Lithospheric yield stress is a key parameter in controlling tectonic processes. We calculate yield stress for a range of conditions appropriate to the Archean Earth, including hot…
IPCC Sixth Assessment approaches towards FAIR data and an enhanced data reuse
The Intergovernmental Panel on Climate Change (IPCC) currently prepares its Sixth Assessment Report (AR6). Its authors assess peer-reviewed scientific literature and recent climat…
Volcano-tectonic interactions at Sabancaya volcano, Peru: eruptions, magmatic inflation, moderate earthquakes, and faul…
We present evidence of volcano-tectonic interactions at Sabancaya volcano that we relate to episodic magma injection and high regional fluid pore pressures. We present a surface d…
Comment on “Characterizing detachment and transport processes of interrill soil erosion, Geoderma 376 (2020) 114549”
Zhang et al (2020) measured soil splashed and washed by rain-impacted flows on surfaces where 4 sections were exposed in sequence during a 1 hour rainfall event. In one treatment,…
Intraseasonal Variability of the Indonesian Throughflow Associated with the Madden-Julian Oscillation
Previous studies indicate significant intraseasonal (20-90 days) variability on the Indonesian Throughflow (ITF) transport produced by the Madden-Julian Oscillation (MJO). These s…
Momentum fluxes across the air-ice-ocean interface in the Beaufort Sea
Increasing extent and duration of seasonally ice-free area in the western Arctic Ocean suggests increased air-sea coupling, specifically fluxes of momentum and heat between the lo…
2000 years of event sedimentation in Lake Iseo (Italian Alps) under the influence of floods, earthquakes and human acti…
Few of the large Southern peri-alpine lakes have been studied with a sedimentological approach in their deep basin to understand the dynamics of their long-term sedimentation due,…
A Comparison of Six Transport Models of the MADE-1 Experiment implemented with Different Types of Hydraulic Data
Six conceptually different models of steady groundwater flow and conservative transport are applied to the heterogeneous MADE aquifer. Their predictive capability is assessed by c…
The characteristics of EMIC waves observed by the Van Allen Probes and Arase satellites
We performed a comprehensive statistical study of electromagnetic ion cyclotron (EMIC) waves observed by the Van Allen Probes and Exploration of energization and Radiation in Geos…
Statistical Relationship between Interplanetary Magnetic Field Conditions and the Helicity Sign of Flux Transfer Event …
Flux Transfer Events (FTEs) are transient phenomena produced by magnetic reconnection at the dayside magnetopause typically under southward interplanetary magnetic field (IMF) con…
Effect of iron on density and sound velocity of ringwoodite at high pressure and high temperature
As the most enriched composition of the lower part of mantle transition zone, properties of bearing-Fe ringwoodite are important to deduce the composition and structure of the man…
Chemical speciation of trace metals in atmospheric deposition and impacts on soil geochemistry and vegetable bioaccumul…
Atmospheric deposition is an important source of trace metals to surface environments, but knowledge about plant bioavailability of recently deposited metals is limited. We perfor…
Harnessing Satellite 4D SAR for Glacier Surface Tracking over Khumbu Glacier at Mount Everest
The Khumbu Icefall lies at an approximate altitude of 5,500 meters on the Nepali side of Mt. Everest and is one of the most dangerous stages of the major South Col route to the su…
Transiting brown dwarfs from the TESS mission
Traditionally, astronomers have separated giant planets from brown dwarfs based on the object’s mass. Objects more massive than 13 Jupiter masses but less massive than 80 Jupiter …
Assessing the Impacts of Debris Coverage on Glaciers in the Andes
Glaciers act as hydrologic reservoirs in mountain environments around the world. In regions that are particularly water-stressed, such as the Andes, glaciers contribute significan…
Evaluating Drought Responses of Surface Ozone Precursor Proxies: Variations with Land Cover Type, Precipitation, and Te…
Prior work suggests drought exacerbates U.S. air quality by increasing surface ozone concentrations. We analyze 2005-2015 tropospheric column concentrations of two trace gases tha…
A Testable Worldwide Earthquake Faulting Mechanism Forecast Model
In this paper, we present a simple model to forecast global focal mechanisms. This model is based on a simple discrete counting distribution of the global centroid moment tensor c…
Default priors cause biases in orbital parameter estimates for directly-imaged exoplanets.
The eccentricity of the planet’s orbit and the inclination of the orbital plane carry important information about its formation and history. However, exoplanets detected via direc…
Shifts in Irrigation Water Demand and Supply Patterns during Critical Crop Growth Stages under Changing Impacts of Clim…
Changing irrigation water demand (IWD) and supply (IWS) patterns (size and time) under increased climate variability and socio-economic development is significantly effecting the …
Evolution of Electric Sector Water Use Under Alternative Electricity Futures
Increasing competition for water resources in the United States could create future challenges for allocating and using thermal cooling water in the U.S. electric power sector. Wh…
Evaluation of carbon export from blue carbon ecosystems and allochthonous sequestration using eDNA techniques
Blue carbon ecosystems such as mangroves and seagrass meadows (coastal marine ecosystems dominated by halophytic vascular plants) are regarded as a global carbon dioxide (CO2) sin…
Two propagation scenarios of isolated breakdown lightning processes in failed negative cloud-to-ground flashes
Isolated breakdown (IBD) process is a lightning phenomenon that was rarely reported in the past. It is characterized by radiowave pulses typical for preliminary breakdown before n…
Controls on the Global Distribution of Martian Landsliding
Recent acquisition of high-resolution satellite imagery of the Martian surface has permitted landsliding to be studied on a global scale on Mars for the first time. We apply the S…
Variational Full-waveform Inversion
Seismic full-waveform inversion (FWI) can produce high resolution images of the Earth’s subsurface. Since full waveform modelling is significantly nonlinear with respect to veloci…
Inter-comparison of AIRS temperature and relative humidity profiles with AMMA and DACCIWA radiosonde observations over …
The vertical profiles of temperature and water vapour from the Atmospheric InfraRed Sounder (AIRS) have been validated across various regions of the globe as an effort to provide …
Using the aa index over the last 14 solar cycles to characterize extreme geomagnetic activity
Geomagnetic indices are routinely used to characterize space weather event intensity. The DST index is well resolved, but only available over 5 solar cycles. The aa index extends …
A Fresh Look at Variography: Measuring Dependence and Possible Sensitivities Across Geophysical Systems from Any Given …
Sensitivity analysis in Earth and environmental systems modelling typically demands an onerous computational cost. This issue coexists with the reliance of these algorithms on ad-…
Reorganization of atmospheric circulation between 1400-1700 CE as recorded in a South Pole ice core
Here we present an ~2000 year high-resolution glaciochemical record from the South Pole. Significant changes in chemical concentrations, accumulation rate, stable water isotopes a…
Global submesoscale Transition Scale estimation using alongtrack satellite altimetry
The ocean’s sea surface height (SSH) field is a complex mix of motions in geostrophic balance and high-frequency tides, internal tides and internal gravity waves. The transition s…
The interplay between ambipolar electric field and Coulomb collisions in the solar wind acceleration region
The solar wind protons are accelerated to supersonic velocities within the distance of 10 solar radii from the Sun, as a consequence of a complex physical mechanism including part…
Predicting solar spectra using broadband EUV irradiance measurements
Soft x-ray and EUV radiation from the Sun is absorbed by and ionizes the atmosphere, creating both the ionosphere and thermosphere. Temporal changes in irradiance energy and spect…
Open Science and Data Management: Introducing Graduate Students to Research Workflows in a Local Context
The Engineering & Physical Sciences Division of the UC Berkeley Library partners with researchers to support the entire research life cycle. Since 2016, the division’s Science Dat…
Geochronological data and paleontology of early Paleozoic terranes in Inner Mongolia: indicating the evolution of the s…
In this study, we present detrital zircon U-Pb dating and paleontological data for the newly identified Ayadeng formation in the northern margin of the North China Block (NCB) and…
Geomagnetic and Solar dependency of MSTIDs occurrence rate: A climatology based on airglow observations from the Arecib…
We employ in this work the first airglow dataset registered at the Remote Optical Facility (ROF) in Culebra, Puerto Rico, during the descending phase of the solar cycle #24. From …
Characterization of porosity in the sediments entering the Northern Hikurangi Margin from Cation Exchange Capacity and …
In subduction zones, megathrust seismicity depends on the hydrogeological, physical and mechanical properties of sediments before they enter the subduction zone and how these prop…
Seasonal and solar wind sector duration influences on the correlations of high latitude clouds with ionospheric potenti…
Irradiances from long-lived stratus-type clouds at Alert (Canada), Summit (Greenland), and South Pole, previously measured, show correlations with the day-to-day input to the glob…
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