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Showing 10051 to 10100 of 22070 works
Large-scale Cenozoic Wind Erosion in the Puna Plateau: The Salina del Fraile Depression
Wind erosion is integral to the evolution of arid landscapes on Earth and Mars, but the nature of long-term wind erosion of bedrock is poorly understood. Here we describe the Sali…
Combining NASA GLOBE Observer with Web Technologies to Broaden High School Student Access to Authentic Science Research…
The emergence of technologies such as mobile devices, web-based analytical tools, social media platforms, open data and cloud computing have the potential to enable broader partic…
Climatology and Evolution of the Antarctic Peninsula Fohn Wind-induced Melt Regime from 1979-2018
Warm and dry fohn winds on the Antarctic Peninsula (AP) cause surface melt that can destabilize vulnerable ice shelves. Topographic funneling of these downslope winds through moun…
Estimation of NAPL-Water interfacial areas for unconsolidated porous media by kinetic interface sensitive (KIS) tracers
Employing kinetic interface sensitive (KIS) tracers, we investigate three different types of glass-bead materials and two natural porous media systems to quantitatively characteri…
Sample management in JAMSTEC: Cooperation-based management of diverse samples
JAMSTEC publicly distributes samples and data obtained by JAMSTEC-AORI-JURCAOS Cooperative Research Cruises [1], as well as those by JAMSTEC private/open-call cruises, through onl…
Evaluation of stratospheric intrusions and biomass burning plumes on the vertical distribution of tropospheric ozone ov…
Naturally occurring ozone rich Stratosphere-to-Troposphere Transport (STT) intrusions and biomass burning (BB) plumes reaching the surface can contribute to exceedances of the U.S…
Temporal evolution of flux rope/tube entanglement in 3-D Hall MHD simulations
At the Earth’s magnetopause, flux tubes observed by the Magnetospheric Multiscale (MMS) spacecraft in “entangled” pairs have been interpreted as a precursory stage to the formatio…
Future projections and uncertainty assessment of precipitation extremes in the Korean peninsula from the CMIP6 ensemble
Projected changes in extreme climate are occasionally predicted through multi-model ensemble methods using a weighted averaging that combines predictions from individual simulatio…
Investigation of ionosphere response to geomagnetic storms over the propagation paths of very low frequency radio waves
We analysed variations in signal metrics and the diurnal amplitude of VLF radiowaves from four propagation paths during intervals of 4 geomagnetic storms on 17, 26 September, 25 O…
Evaluation of MODIS and Himawari-8 Low Clouds Retrievals over the Southern Ocean with In Situ Measurements from the SOC…
Aircraft observations collected during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study (SOCRATES) in January-February of 2018 are used to evaluate cloud pr…
COEXISTENCE OF FAST AND SLOW SLIP EVENTS IN LABORATORY SEISMIC CYCLES
The spectrum of slip modes on gouge-filled faults spans a continuum from fast ruptures to slow slip events. The nucleation of a certain slip mode is governed by the frictional het…
Upper-atmosphere mass density variations from CASSIOPE precise orbits
Thermospheric mass density (TMD) measurements are invaluable to accurately estimate and predict the position and velocity of orbiting objects in Low Earth Orbit (LEO). Existing ob…
Meteor-ablated Aluminum in the Mesosphere-Lower Thermosphere
The first global atmospheric model (WACCM-Al) of meteor-ablated aluminum was constructed from three components: the Whole Atmospheric Community Climate Model (WACCM6); a meteoric …
Clog and Crack: Opening and Closing Behavior During a Sustained Explosive Eruption as recorded by its Hidden Earthquakes
Volcanic eruptions progress by co-evolving fluid and solid systems. The fluid mechanics can be observed through the plumes and ejecta produced, but how does the solid system evolv…
Improvement of Wave Boundary Layer Theory Applied in Atmosphere-Wave Coupled Model
The wave boundary layer (WBL) theory from low to extreme winds is improved based on the governing equations of airflow with suspended spray droplets. The modified theory accounts …
Electron Bulk Heating at Saturn's Magnetopause
Magnetic reconnection at the magnetopause (MP) energises ambient plasma via the< release of magnetic energy and produces an “open” magnetosphere allowing solar wind particles to d…
Role of fluid injection on earthquake size in dynamic rupture simulations on rough faults
An outstanding question for induced seismicity is whether the volume of injected fluid and/or the spatial extent of the resulting pore pressure and stress perturbations limit rupt…
Modelling the accumulation and transport of microplastics by sea ice
Plastic pollution is ubiquitous within the marine environment. Despite increasing public and scientific attention to the issue, there still remain gaps in the knowledge of the ful…
Modeling melting of the Martian mantle and crust-mantle differentiation with global thermochemical evolution models
Basaltic melts are produced when convection adiabatically brings deep and hot mantle to lower pressures. Such primary melts were extracted from the mantle of Mars, crystallized ne…
The rate of coastal temperature rise adjacent to a warming western boundary current is non-uniform with latitude
Western boundary currents (WBCs) have intensified and become more eddying in recent decades due to the spin-up of the ocean gyres, resulting in warmer open ocean temperatures. How…
Cohesive sediment erosion in a combined wave-current boundary layer
We conducted field work on the shoals of South San Francisco Bay to elucidate the mechanisms driving cohesive sediment erosion in a shallow, wave- and current-driven flow. Compili…
Spatial Orientations of Hydraulically Conductive Shear Natural Fractures for an Arbitrary Stress State: an Analytical S…
The paper focuses on spatial orientations of hydraulically conductive shear fractures existing in naturally fractured fluid saturated rocks. Hydraulic conductivity of such fractur…
Alpha transmitter signal reflection and triggered emissions
Russian Alpha radio navigation system (RSDN-20) emits F1=11.9kHz signals into the magnetosphere which propagate as whistler-mode waves. Observed by waveform continuous burst mode …
A Machine learning technique for spatial interpolation of solar radiation observations
This paper applies statistical methods to interpolate missing values in a dataset of radiative energy fluxes at the surface of Earth. We apply Random Forest (RF) and seven other c…
22-Year magnetic solar cycle [Hale cycle] responsible for significant underestimation of the Sun’s role in global warmi…
Reconstructions for global temperature development show an upward oscillation for the period of the 1880s through 1980s. This oscillation is being associated with natural variabil…
Formation of Amorphous Materials Causes Parallel Brittle-viscous Flow of Crustal Rocks: Experiments on Quartz - Feldspa…
The brittle – viscous transition in the lithosphere occurs in a region where many large earthquakes nucleate. To study this transition, we sheared bi-mineralic aggregates with var…
Investigation of the variability of night-time equatorial thermospheric winds over Nigeria, West Africa
This paper examined the variability of equatorial thermospheric meridional and zonal wind speeds at night-time using an optical Fabry–Perot interferometer (FPI) located in Abuja, …
Innovation and Complex Life
The technosignature search needs to become more quantifiable. It is necessary to address time frames of relevant signals for technosignatures, study the acceleration of innovation…
Carbon accumulation in freshwater marsh soils: A synthesis for temperate North America
Peatland soils are of great interest for study and management because of their high carbon contents and known role in the global carbon cycle. However, carbon stocks have yet to b…
Sediment flows in South America supported by daily hydrologic-hydrodynamic modeling
Suspended sediments (SS) contribute to the maintenance of several ecosystems. However, intense soil erosion can lead to environmental, social, and economic impacts. South America …
Direct inversion of surface wave dispersion data with multiple-grid parameterization and its application to a dense arr…
The approach of direct inversion of surface wave dispersion data to obtain shallow earth structure becomes popular compared with the traditional two-step surface wave tomographic …
Physics-informed neural networks with monotonicity constraints for Richardson-Richards equation: Estimation of constitu…
Water retention curves (WRCs) and hydraulic conductivity functions (HCFs) are critical soil-specific characteristics necessary for modeling the movement of water in soils using th…
Assimilation of the rain-gauges measurements using Particle Filter
The well recognized constraint of non-linear and non-Gaussian distribution of rainfall observation limits its assimilation in the high-dimensional numerical weather prediction (NW…
GPS Imaging of Mantle Flow-Driven Uplift of the Apennines, Italy
We use a newly updated GPS dataset and the GPS Imaging technique to show that the relief of the Apennines Mountain chain in Italy is currently increasing along its entire length b…
Examining the magnetic geometry of magnetic flux rope: from the view of single-point analysis
With Magnetospheric Multiscale Mission (MMS) observation of a magnetic flux rope of ion scale in magnetopause, we apply the single-point method presented by Rong et al., [2013] to…
Magnetic Induction Responses of Jupiter's Ocean Moons Including Effects from Adiabatic Convection
Prior analyses of oceanic magnetic induction within Jupiter’s large icy moons have assumed uniform electrical conductivity. However, the phase and amplitude responses of the induc…
Relative importance of greenhouse gases, sulfate, organic carbon, and black carbon aerosol for South Asian monsoon rain…
The contribution of individual aerosol species and greenhouse gases to precipitation changes during the South Asian summer monsoon is uncertain. Mechanisms driving responses to an…
Precessional Climate Variations Driven from the Tropics
The Atlantic’s Meridional Overturning Circulation (AMOC) is weak when the northern summer insolation is strong and vice-versa in the 23-kyr precessional frequency band. The mechan…
Materials Design Considerations of Hollow Glass Microspheres for Albedo Enhancement of Arctic Ice
Hollow glass microspheres (HGMs) are promising materials for arctic ice restoration. When spread in a thin layer on top of ice, these materials can increase the albedo of arctic i…
Peculiarities of the propagation of the fast magnetosonic mode in a curved magnetic field: a case of the hemicylindrica…
The propagation of the fast magnetosonic (FMS) wave in the curved magnetic field is studied. A hemicylindrical model of the magnetosphere is considered where the magnetic field li…
Thermal conductivity profile in the Nankai accretionary prism at IODP NanTroSEIZE Site C0002: estimations from high-pre…
Depth profiles of sediment thermal conductivity are required for understanding the thermal structure in active seismogenic zones. During the Nankai Trough Seismogenic Zone Experim…
Array-based convolutional neural networks for automatic earthquake detection and 4D localization
The growing amounts of seismic data necessitates efficient and effective methods to monitor earthquakes. Current methods are computationally expensive, ineffective under noisy env…
Lagrangian Statistics for Dispersion in Magnetohydrodynamic Turbulence
Measurements in the heliosphere and high-resolution fluid simulations give clear indications for the anisotropy of plasma turbulence in the presence of magnetic fields. How this a…
Measuring the impact of a new snow model using surface energy budget process relationships
Energy exchange at the snow-atmosphere interface in winter is important for the evolution of temperature at the surface and within the snow, preconditioning the snowpack for melt …
Bayesian hierarchical modelling of nitrate concentration in a forest stream affected by large-scale forest dieback
The ecosystem function of vegetation to attenuate riverine export of nutrients is of substantial importance for securing water quality. This ecosystem function is at risk of deter…
On the semi-annual formation of large scale three-dimensional vortices at the stratopause
An examination of the dynamics of the middle atmosphere as reconstructed in the NASA Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) reveals t…
Characterization of the multicellular membrane-bearing algae from the early Cambrian Kuanchuanpu biota
The diversity of small shelly fossils (SSF) demonstrates that multicellular organisms underwent large-scale radiation at the beginning of the Cambrian, which is highlighted by the…
Temporal and Spatial Changes of Water Occurrence in the Selenga River Delta
Surface water occurrence in river deltas is governed by precipitation, evaporation, and the influx and outflux of water to and from the delta. Although studies of changes in water…
Bayesian inference of mantle viscosity from whole-mantle density models
The long-wavelength geoid is sensitive to Earth’s mantle density structure as well as radial variations in mantle viscosity. We present a suite of inversions for the radial viscos…
Stress-Dependent Magnitudes of Induced Earthquakes in the Groningen Gas Field
Geological faults may produce earthquakes under the increased stresses associated with hydrocarbon recovery, geothermal extraction, CO2 storage. The associated risks depend on the…
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