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Showing 10751 to 10800 of 22070 works
Discrete rising tone elements of whistler-mode waves in the vicinity of the Moon: ARTEMIS observations
We report on discrete rising-tone elements of whistler-mode waves observed by Acceleration, Reconnection, Turbulence, and Electrodynamics of the Moon’s Interaction with the Sun (A…
How rapidly do the southern subtropical oceans respond to wind stress changes?
The response time of the southern subtropical oceans to an increase in the wind stress is examined in a climate model perturbation simulation where there is an abrupt increase in …
Tectonic transitions in the Tibetan plateau during India-Asia collision: Findings from scaled laboratory models
The India-Asia continental collision, starting at ~50 Ma, has resulted in about 2000 km crustal shortening to build the Himalaya-Tibetan plateau, which is one of the landmark terr…
Statistical Characterization of Environmental Hot Spots and Hot Moments and Applications in Groundwater Hydrology
Environmental hot spots and hot moments (HSHMs) represent rare locations and events that exert disproportionate influence over the environment. While several mechanistic models ha…
New technique to diagnose the geomagnetic field based on the single circular current loop model
A quick and effective technique is developed to diagnose the geomagnetic dipole field based on an unstrained single circular current loop model. In comparsion with previous studie…
Machine Learning improves warning systems of debris flows
Automatic identification of debris flow signals in continuous seismic records remains a challenge. To tackle this problem we use a machine learning approach, which can be applied …
Improving Wind Forecasts in the Lower Stratosphere by Distilling an Analog Ensemble into a Deep Neural Network
We discuss improving forecasts of winds in the lower stratosphere using machine learning to post-process the output of the European Centre for Medium-Range Weather Forecasts (ECMW…
Hydro-Mechanical-Seismological Modeling of Fluid-Induced Seismicity in Fractured Nonlinear Poroelastic Media: Theory, I…
Decoupled hydro-shearing has been a decades-long paradigmatic mechanism of fluid-induced seismicity. A surging alternative is coupled hydro-mechanical triggering, largely based on…
The 2020 eruption and the large lateral dike emplacement at Taal volcano, Philippines: Insights from radar satellite da…
On 12 January 2020, Taal volcano, Philippines, erupted after 43 years of repose, affecting more than 500,000 people. Using interferometric synthetic aperture radar (InSAR) data, w…
Spatial Scales of Sea Surface Salinity Subfootprint Variability in the SPURS Regions
Subfootprint variability (SFV), or representativeness error, is variability within the footprint of a satellite that can impact validation done by comparison of in situ and remote…
Clio: Toward routine operations for a fast vertical profiling vehicle designed for global ocean biogeochemical mapping
We report the design and results from a series of recent cruises using a fast vertical profiling autonomous underwater vehicle called Clio. Clio has been designed specifically to …
Uncertainty quantification of ocean parameterizations: application to the K-Profile-Parameterization for penetrative co…
Parameterizations of unresolved turbulent processes often compromise the fidelity of large-scale ocean models. In this work, we argue for a Bayesian approach to the refinement and…
Joint Inversion for Surface Accumulation and Geothermal Flux from Ice-Penetrating Radar Observations at Dome A, East An…
Dome A is the peak of the East Antarctic Ice Sheet (EAIS), underlain by the rugged Gamburtsev Subglacial Mountains (GSM). The rugged basal topography produces a complex hydrologic…
Analysis of surface deformations related to the 2010 Maule earthquake based on GPS data
The Chilean subduction zone is one of the most seismically active regions on Earth, due to the shallow depth of the seismogenic zone in combination with the high coupling coeffici…
3D Printing: Challenges and Opportunities for its Application in Soil Science
Being at the interface of the geosphere, the biosphere, and the atmosphere makes the soil a particularly challenging object. Nevertheless, its importance in ecological and environ…
Proxies for atmospheric circulation over the Amazon basin from the aerosol composition in a Nevado Illimani firn core, …
Current changes in tropical South America due to atmospheric warming, deforestation, and glacier retreat impact moisture and water exchange between the Amazon basin and the Andes.…
Remote sensing vegetation indices enhance understanding of the coupling of terrestrial ecosystem evapotranspiration and…
The current approaches have known limitations to understanding the coupling of terrestrial ecosystem evapotranspiration (ET) and photosynthesis (referred to as gross primary produ…
The Flare Irradiance Spectral Model - Version 2 (FISM2)
The Flare Irradiance Spectral Model (FISM) is an important tool for estimating solar variability for a myriad of space weather research studies and applications, and FISM Version …
Ultra-wideband SAR Tomography on asteroids
Our knowledge of the internal structure of asteroids is currently indirect and relies on inferences from remote sensing observations of surfaces. However, it is fundamental for un…
Rapid 21 st century warming of the Indian Ocean is forced by the Southern Ocean
The tropical Indian Ocean has been warming at an alarming rate in the recent decade with the southern tropical Indian Ocean (STIO; 15oS-35oS) being the hotspot storing more than 4…
Development of a Trans-dimensional Fault Slip Inversion for Geodetic Data
Geodetic fault slip inversions have been generally performed by employing a least squares method with a spatial smoothing constraint. However, this conventional method has various…
Operational soil moisture data assimilation for improved continental water balance prediction
A simple and efficient method was developed to improve soil moisture representation in an operational water balance model through satellite data assimilation. The proposed method …
Exploration of synthetic terrestrial snow mass estimation via assimilation of AMSR-E brightness temperature spectral di…
This study explores improvements in the estimation of snow water equivalent (SWE) over snow-covered terrain using an ensemble-based data assimilation (DA) framework. The NASA Catc…
The 2017, Mw 3.9, Ischia Earthquake (Southern Italy): Source mechanism from the modelling of seismic, geodetic, and geo…
The moderate earthquake occurred at the volcanic island of Ischia, south-west of Naples (Italy) caused several buildings collapse, two victims, and several tens of injured people.…
Atomic-Scale Simulations of Meteor Ablation
Meteoroids smaller than a microgram constantly bombard the Earth, depositing in the mesosphere and lower thermosphere. Meteoroid ablation, the explosive evaporation of meteoroids …
The Effects of Anthropogenic and Volcanic Aerosols and Greenhouse Gases on 20th Century Sahel Precipitation
There is little scientific consensus on the importance of external climate forcings—including anthropogenic aerosols, volcanic aerosols, and greenhouse gases (GHG)—relative to eac…
Excitation mechanism of ionospheric 6-day oscillation during the 2019 September sudden stratospheric warming event
A sudden stratospheric warming (SSW) event in the Antarctic region occurred in September 2019. During the SSW event, the quasi 6–day wave (Q6DW) was enhanced in the mesosphere, an…
Enhancing Data Quality Assessment Capabilities by Providing Unique, Authoritative, Discoverable, Referenceable Sensor M…
With observational data becoming widely available, researchers struggle to find information enabling assessment for its reliable use. A small first-step toward enabling data quali…
Resolving the differences in the simulated and reconstructed temperature response to volcanism
Explosive volcanism imposes impulse-like radiative forcing on the climate system, providing a natural experiment to study the climate response to perturbation. Previous studies ha…
Spectral Characterization for Small Clusters of Silicon and Oxygen: SiO, SiO3, Si2O3, & Si2O4
Infrared spectra of evolved stars have a rise in signal between the 7.0 μm and 8.0 μm wavelengths; the antisymmetric Si−O stretches of small silicon oxide clusters fall in this ra…
Automated tools to derive short-term glacier velocity from high-resolution commercial satellite imagery
Image feature tracking with medium-resolution optical satellite imagery (e.g., Landsat-8) offers measurements of glacier surface velocity on a global scale. However, for slow-movi…
Ranking IPCC Models Using the Wasserstein Distance
We propose a methodology for evaluating the performance of climate models based on the use of the Wasserstein distance. This distance provides a rigorous way to measure quantitati…
Mapping tidal currents at a shallow tidal channel junction using the fluvial acoustic tomography system
For the first time, we monitored continuous 2D tidal currents at a shallow tidal junction using the fluvial acoustic tomography (FAT) system during a period of ~ 34.4 days. The ho…
Does deep non-volcanic tremor occur in the central-eastern Mediterranean basin?
Non-volcanic tremor has been observed at the roots of many fault systems around the Pacific rim, including convergent and transform plate boundaries. The extent to which deep trem…
Stable climates for temperate rocky circumbinary planets
Circumbinary planets may comprise a significant fraction of the temperate rocky planets in our galaxy. A wide range of previous work has explored the climate of circumbinary plane…
The Ocean Mesoscale Regime of the Reduced-Gravity Quasi-Geostrophic Model
A statistical-equilibrium, geostrophic-turbulence regime of the stochastically forced, one-layer, reduced-gravity, quasi-geostrophic model is identified in which the numerical sol…
MONITORING OF URBAN SPRAWL AND SPATIO-TEMPORAL VARIABILITY OF LANDUSE/LANDCOVER CHANGE IN ASAN WATERSHED, DOON VALLEY, …
Urban expansion is a global trend primarily determined by overpopulation, particularly in developing countries like India. The pattern and boundary of urban expansion could be obs…
Loss Exponent Modeling for the Hilly Forested Region in the VHF Band III
Modeling forest propagation loss over a vast area is challenging, particularly for the hilly terrain regions where canopy obstacle depth varies with region. To consider such veget…
Potential for early forecast of Moroccan wheat yields based on climatic drivers
Wheat production plays an important role in Morocco with the country typically producing more than half of Northwest African grain production. Current wheat forecast systems use w…
Impact of compounding atmospheric events on shelf heat content in a river-influenced shelf system: Potential implicatio…
Hurricane Michael in 2018 was one of the strongest storms to impact the coastal U.S. and was unusual given that it occurred in October (i.e., late in the hurricane season) and int…
In Situ Characterisation of Three-Phase Flow in Mixed-Wet Porous Media Using Synchrotron Imaging.
We use fast synchrotron X-ray imaging to understand three-phase flow in mixed-wet porous media to design either enhanced permeability or capillary trapping. The dynamics of these …
Climb of jogs as a rate-limiting process of screw dislocation motion in olivine dislocation creep
Dislocation recovery experiments were conducted on predeformed olivine single crystals at temperatures of 1,450 to 1,760 K, room pressure, and oxygen partial pressures near the Ni…
Joint Inversion for Surface Accumulation and Geothermal Flux from Ice-Penetrating Radar Observations at Dome A, East An…
Ice-penetrating radar data contain a wealth of information about the bed and internal structure of the ice sheet. While these data have long been used to diagnose the presence of …
New magnetic data indicate successive ridge jumps and rotations of seafloor spreading in the South China Sea
New shipborne surveys provide a closely spaced magnetic anomaly dataset covering the East Subbasin (ESB) of the South China Sea (SCS). Magnetic anomalies of seafloor spreading are…
Generating Proxy SWOT Water Surface Elevations Using WRF-Hydro and the CNES SWOT Hydrology Simulator
The Surface Water Ocean Topography (SWOT) mission will launch in 2021 to provide the first global inventory of terrestrial surface water. Although SWOT is primarily a research mis…
Erosional impact on fault segmentation in thrust belts: Low-temperature thermochronology and fluvial shear stress analy…
Mechanism for fault segmentation in thrust belt is a key to understanding the orogenic process and seismic risks. A ~50 km long aftershock gap emerged between the ruptures of the …
Hadean, Archean, and modern Earth: Zircon-modeled melts illuminate the formation of Earth’s earliest felsic crust
The magmato-tectonic environment(s) of origin for Earth’s earliest crust are enigmatic and fiercely debated. Revealing the composition of the melts from which Hadean (>4.02 Ga) zi…
Using Gaussian process regression and stable isotopologues of water vapor to estimate shallow convective moistening in …
Convective mixing in the lower free troposphere (LFT) and its response to climate change are at the heart of low-cloud feedbacks in projections of future warming, but are challeng…
Madden-Julian Oscillation (MJO) Effects in the GOLD O/N2 and Swarm-C neutral density during 2018-2019?
The extent to which terrestrial weather below 30 km in altitude can influence the dynamics and mean state of the thermosphere (ca., 100-500 km) is a fascinating discovery of the l…
Sensitivity of Water Balance in the Qaidam Basin to the Mid-Pliocene Climate
The Qaidam Basin (QB) in the northeastern Tibetan Plateau held a mega-lake system during the Pliocene. Today, the lower elevations in the basin are hyperarid. To understand the me…
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