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Showing 8301 to 8350 of 59105 works
Engaging the Public in Science Learning with the 2019-2020 MOSAiC Arctic Research Expedition
Scientific expeditions can be used to engage the public in science learning within an exciting and compelling context, giving insight into the often messy and serendipitous nature…
Projecting future fire regimes in semiarid systems of the inland northwestern U.S.: interactions among climate change, …
Fire regimes are influenced by both exogenous drivers (e.g., increases in atmospheric CO2; and climate change) and endogenous drivers (e.g., vegetation and soil/litter moisture), …
Spatially resolved photochemistry impacts emissions estimates in fresh wildfire plumes
Wildfire emissions affect downwind air quality and human health. Predictions of these impacts using models are limited by uncertainties in emissions and chemical evolution of smok…
The high-altitude peaks of atmospheric ozone as observed by NOMAD/UVIS onboard the ExoMars Trace Gas Orbiter Mission
Solar occultations performed by the Nadir and Occultation for MArs Discovery (NOMAD) ultraviolet and visible spectrometer (UVIS) onboard the ExoMars Trace Gas Orbiter (TGO) have p…
The vertical distribution of ozone in Mars Years 34-35 from ExoMars TGO/NOMAD-UVIS observations
We present ~1.5 Mars Years (MY) of ozone vertical profiles, covering Ls = 163deg; in MY34 to Ls = 320deg; in MY35, a period which includes the 2018 global dust storm. Since April …
How much inundation occurs in the Amazon River basin?
The Amazon River basin harbors some of the world’s largest wetland complexes, which are of major importance for biodiversity, the water cycle and climate, and human activities. Ac…
Basinal variation of seismic attribute response in deepwater architectural element recognition
The advancement of seismic attributes and visualization techniques has allowed the study of seismic geomorphology from 3D reflection data. The study of deepwater deposits denes an…
Landfast ice and coastal wave exposure in northern Alaska
Observations of ocean surface waves at three sites along the northern coast of Alaska show a strong coupling with seasonal sea ice patterns. In the winter, ice cover is complete, …
Significance and Application of Velocity Derivative Gradient in Petroleum Exploration
Velocity is one of the fundamental data obtained from seismic and it is the direct behavior of the solids and fluids in lithosphere. Here we present an analysis of the derivative …
Morphology of a new system of glaciovolcanic caves---Mount St. Helens, Washington, USA
Mount St. Helens, Washington State, USA, is characterized by a 2 x 3.5 km horseshoe-shaped and north-facing crater and hosts one of the last expanding glaciers in the Cascade Volc…
Quality-preserved Ambient Noise Imaging in Distributed Sensor Networks with Limited Bandwidth
Distributed sensor networks empower real-time in-situ computing and seismic imaging without transmitting the raw data to the remote data center. This attribute is valuable for pla…
LAPS -- A Digital Data Repository Workflow in Experimental Rock Deformation
Laboratory data are essential for testing and refining of theories and models in Earth sciences. Recent developments in data mining techniques and machine learning have made it fe…
A Reynolds and coarse-graining hybrid eddy transport diagnostic framework and its application in the Southern Ocean
Mesoscale ocean eddies dramatically impact oceanic material transport, momentum and energy budgets, and large-scale ocean circulation; therefore, reasonably diagnosing their effec…
Early burial mud diapirism: Lateral overpressure transfer and slope failure in a deformed foredeep
Understanding triggers and evolution of post-depositional sediment intrusion is of major importance to decrease the risk associated with hazards to infrastructure and environment …
An Elastic-Electrical Joint Method for Fracture Evaluation in Anisotropic Formation
The formation evaluation of fractured shale has been a challenging topic in unconventional exploration engineering due to the complicated formation conditions with strong anisotro…
Wave-induced steady currents by submerged canopy-oscillatory flow interaction
A new analytical model is presented in order to better understand the depth-dependent wave-induced steady current caused by submerged aquatic canopy-oscillatory flow interaction. …
Submarine Canyon Oxygen Anomaly Caused by Mixing and Boundary-Interior Exchange
Closely spaced CTD stations showed elevated oxygen within Monterey Submarine Canyon. Anomalously high (2 to 5 umol kg -1 ) dissolved oxygen was found between 600-1100m in the O 2 …
Observed changes in the Arctic Freshwater Outflow in Fram Strait
We present year-round estimates of liquid freshwater transport (FWT) in the East Greenland Current (EGC) in the western Fram Strait from mooring observations since 2015. Novel dat…
Metamorphic facies evolution and distribution in the Western Alps predicted by petrological-thermomechanical models
The evolution and distribution of metamorphic rocks throughout the western European Alps is indicative of subduction-related metamorphism. The present-day distribution of metamorp…
The K and Th concentration in the Martian crust: insights from multi-scale analyses
The univariate statistics of potassium (K) and thorium (Th) concentrations in the oceanic and continental crust of the Earth has been recently investigated from geochemical databa…
Reconnection as an Energy Cascade
In the last few years, the relationship between reconnection and turbulence has received significant attention. A surprising recent result is that laminar reconnection has been sh…
Science Storms the Cloud
The core tools of science (data, software, and computers) are undergoing a rapid and historic evolution, changing what questions scientists ask and how they find answers. Earth sc…
Revisiting daily MODIS evapotranspiration algorithm using flux tower measurements in China
Evapotranspiration ( ET ) is the major component of the hydrology cycle. Satellites provide a convenient way for gathering information to estimate regional ET . The most widely ap…
Observational evidence of the excitation of magnetosonic waves by an He++ ion ring distribution
We report plasma wave observations of equatorial magnetosonic waves at integer harmonics of the local gyrofrequency of doubly-ionized helium (He++). The waves were observed by Van…
Enhanced summer convection explains observed trends in extreme subdaily precipitation in the northeastern Italian Alps
Understanding past changes in precipitation extremes could help us predict their dynamics under future conditions. We present a novel approach for analyzing trends in extremes and…
Groundwater affects the geomorphic and hydrologic properties of coevolved landscapes
The hydrologic dynamics and geomorphic evolution of watersheds are intimately coupled – runoff generation and water storage are controlled by topography and properties of the surf…
An Atmospheric Signal Lowering the Spring Predictability Barrier in Statistical ENSO Forecasts
The loss of autocorrelations of tropical sea surface temperatures (SST) during late spring, also called the spring predictability barrier (SPB), is a factor that strongly limits t…
The Effects of Non-Normal Flow Rules on Fracture Angles in Viscous-Plastic Sea Ice Models
High-resolution viscous-plastic (VP) sea ice models reproduce the narrow deformations lines observed in the Arctic sea ice, called the Linear Kinematic Features (LKFs). Recent stu…
Terrestrial resonant oscillations during the 11 April 2012 Sumatra doublet earthquake
The Earth’s background free oscillations at ~3.7 mHz and ~4.4 mHz resonantly couple with the atmospheric acoustic modes and thus energy cross-talk between the earth-atmosphere sys…
Response Manipulation vs Diurnal Observation: A Direct Comparison of Two Methods for Quantifying Stomatal Behavior in T…
A primary source of uncertainty in terrestrial biosphere model (TBM) projection of carbon uptake and water cycling from ecosystems is the relationship between CO 2 assimilation (A…
What are different measures of mobility changes telling us about emission reductions during the COVID-19 pandemic?
The COVID-19 pandemic led to widespread reductions in mobility and induced observable changes in the atmosphere. Recent work has employed novel mobility datasets as a proxy for tr…
Thermospheric Density Perturbations Produced by Traveling Atmospheric Disturbances during August 2005 Storm
Thermospheric mass density perturbations are commonly observed during geomagnetic storms. The sources of these perturbations have not been well understood. In this study, we inves…
A machine learning bias correction method for precipitation corresponding to weather conditions using simple input data
Various bias correction methods have recently been proposed using machine learning techniques. Generally, machine learning methods are fairly complicated, and it is extremely diff…
Observed Regional Fluxes to Constrain Modeled Estimates of the Ocean Carbon Sink
We compare air-sea CO 2 exchange in an ensemble of global ocean hindcast models to a suite of observation-based products for 1990-2018. Individual products agree closely for regio…
P. Stauning: Comment on “Troshichev et al. 2020: The PC index variations during 23/24 solar cycles: relation to solar w…
P. Stauning: Comment on “Troshichev et al. 2020: The PC index variations during 23/24 solar cycles: relation to solar wind parameters and magnetic disturbances.”: Invalid data bas…
Improved Neutral Density Predictions through Machine Learning Enabled Exospheric Temperature Model
The community has leveraged satellite accelerometer datasets in previous years to estimate neutral mass density and subsequently exospheric temperatures. We utilize derived temper…
Extreme South Pacific Phytoplankton Blooms Induced by Tropical Cyclones
Wind-driven mixing and Ekman pumping from slow-moving tropical cyclones (TCs) can bring nutrients to the euphotic zone, promoting phytoplankton blooms (TC-PBs) observable by satel…
Metrological assessment of on-site geochemical monitoring methods within an aquifer applied to the detection of H 2 lea…
To manage potential risks due to H 2 leaks into the near-surface geosphere from H 2 underground storages (e.g. salt caverns, aquifer), reliable monitoring methods along with a pre…
Cumulative and Transient Surface Deformation Signals in the Permian Basin
The Permian Basin has become the United States’ largest producer of oil over the past decade. Along with the rise in production, there has been an increase in the rate of low magn…
Full-waveform joint inversion of ambient noise data and teleseismic P waves: methodology and applications to central Ca…
Adjoint tomography (i.e., full-waveform inversion) has been recently applied to ambient seismic noise and teleseismic P waves separately to unveil fine-scale lithospheric structur…
Comparison of Co-Incident MISR, Terra MODIS and ISS-CATS Cloud Top Heights
Cloud-top heights (CTH) from the Multiangle Imaging Spectroradiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra constitute our longest-running …
Cenozoic Structural Deformation and Mechanisms of Exhumation of the Metamorphic Complexes in Southeastern Tibetan Plate…
Responses to the India-Eurasia plate collision vary significantly in different regions. In Southeastern Tibetan Plateau, the tectonic extrusion of the Sundaland block accommodated…
The effect of fault architecture on slip behavior in shale revealed by distributed fiber optic strain sensing
We use Distributed Strain Sensing (DSS) through Brillouin scattering measurements to characterize the reactivation of a fault zone in shale (Opalinus clay), caused by the excavati…
Causal links between Arctic sea ice and its potential drivers based on the rate of information transfer
Arctic sea ice has substantially changed over the past four decades, with a large decrease in sea-ice area and volume. The exact causes of these changes are not entirely known. In…
Investigation of Multi-fidelity Co-Kriging Model for Hydraulic Conductivity in Sangamon Watershed
Sangamon watershed is recognized as one of the most worth noting regions for water and environmental supply planning and management purposes according to its intensively managemen…
Improved weather forecasting using neural network emulation for radiation parameterization
In this study, a neural network (NN) emulator for radiation parameterization was developed for the use of an operational weather forecasting model in the Korea Meteorological Admi…
Seasonal extrema of sea surface temperature in CMIP6 models
CMIP6 model sea surface temperature (SST) seasonal extrema averaged over 1980-2010 are assessed against the World Ocean Atlas (WOA18) observational climatology. The biases in SST …
Experimental Investigation of Droplet Distributions from a Plunging Breaker with Different Wind Conditions
Understanding the droplet cloud and spray dynamics is important on the study of the ocean surface and marine boundary layer.The role that the wave energy and the type of wave brea…
Influence of The Scalar Physical Quantity Field on The Probability of an Outcome
Probability allows predicting the most and least probable outcomes. However, the probability of an outcome is affected by the physical quantities that describe the universe. The c…
Teleseismic attenuation, temperature, and melt of the upper mantle in the Alaska subduction zone
Seismic deployments in the Alaska subduction zone provide dense sampling of the seismic wavefield that constrains thermal structure and subduction geometry. We measure P and S att…
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