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Showing 11351 to 11400 of 22070 works
Stress conditions and seismic activity around the rupture zone of the 2016 Kumamoto earthquake in Kyushu, southwest Jap…
The main events of the 2016 Kumamoto earthquake in Kyushu were a foreshock (Mw 6.2) on 14 April and the main shock (Mw 7.0) on 16 April 2016, both of which were caused by fault ru…
Developing and Testing a Long Short-Term Memory Stream Temperature Model in Daily and Continental Scale
Stream water temperature (T) is a variable of critical importance and decision-making relevance to aquatic ecosystems, energy production, and human’s interaction with the river sy…
Coupled shape and spin evolution of Bennu due to the YORP effect
The rotation rate of (101955) Bennu has been observed to increase, providing evidence of the YORP effect in action. Bennu is a rubble pile with little strength. At the current spi…
The 11th January 2018, Mw 6.0 Bago-Yoma, Myanmar earthquake: A shallow thrust event within the deforming Bago-Yoma Range
On 11 January 2018 (18:26 UTC), a Mw 6.0 earthquake occurred approximately 30 km west of the Sagaing Fault in the Bago-Yoma Range (BYR). Using a local broadband seismic network an…
Conjugate ionospheric perturbation during the 2017 solar eclipse
We report new findings of total electron content (TEC) perturbations in the southern hemisphere at conjugate locations to the northern eclipse on 21 August 2017. We identified a p…
Sub-Diurnal to Interannual Frequency Analysis of Observed and Modeled Reflected Shortwave Radiation from Earth
Observational estimates of global top-of-atmosphere radiation on monthly, seasonal, annual, and longer time-scales require estimates of the diurnal variability in insolation and t…
Seasonal Forecasts of Winter Temperature Improved by Higher-Order Modes of Mean Sea Level Pressure Variability in the N…
The variability of the sea level pressure in the North Atlantic sector is the most important driver of weather and climate in Europe. The main mode of this variability, the North …
Comparing the radiative effects of the anthropogenic aerosol emissions from Chile and Mexico
There has been growing interest in the potential of short-lived climate forcer (SLCF) mitigation to reduce near-term global warming. Black carbon (BC) is a SLCF that is known to w…
Frictional Segmentation of the Chilean Megathrust from a Multivariate Analysis of Geophysical, Geological and Geodetic …
Great subduction earthquakes rupture similar regions of the megathrust during successive events separated by centuries. Mapping these regions (asperities) and their boundaries (ba…
On The Robustness of Asthenosphere Plug Flow in Mantle Convection Models With Plate-Like Behavior
The question of what drives tectonic plates has been revitalized by seismic observations that cannot be explained by conventional plate-driving forces. The observations, designed …
Interannual variability of air-sea exchange of mercury in the global ocean: the “seesaw effect” in the equatorial Pacif…
Air-sea exchange of mercury (Hg) is influenced by meteorological factors that have substantial interannual variability. Here we investigate its interannual variability and influci…
Saturated Water Storage in Shallow Perched Aquifer With Evapotranspiration From the Phreatic Surface and Unsaturated La…
Two models are compared for Darcian flows in a vadose zone and shallow unconfined aquifer with an intensive evapotranspiration, common for hyperarid climates. An analytical 2-D Du…
Spatiotemporal Drivers of Hydrochemical Variability in a Tropical Glacierized Watershed in the Andes
Little is currently known about the hydrochemistry of tropical glacierized mountain watersheds, which are among the most vulnerable systems in the world. Glacier retreat may impac…
Global variation of pulse-like ground motions characterized from 3D rotation seismic data
Strong pulse-like ground motions excited by a causative fault with a rupture propagation close to the shear wave velocity can induce significant geological hazards. Despite recent…
The 2015-2016 Earthquake Sequence in Cushing, Oklahoma driven by Coulomb Stress Changes and Fluid Diffusions
An M5 earthquake occurred on November 7th, 2016, near the city of Cushing in Oklahoma, the largest crude oil storage site in the USA, after nearby disposal wells had been shut-in …
A Pareto Multi-Objective Optimization Approach for Shale Anisotropy Model
In many rock types, such as shales, elastic parameters vary with propagation directions, defined as elastic anisotropy. Recent advances in seismic data acquisition requires the ne…
High temperature and pressure rheological experiments on felsic granulite
Rheological properties of continental lower crust (CLC) are essential for understanding many geodynamical processes in the Earth. Here we performed a series of deformation experim…
Geometric criteria for the snap-off of a nonwetting droplet in pore-throat channels with rectangular cross-sections
Snap-off is a phenomenon that occurs when a non-wetting fluid displaces a wetting fluid in pore-throat channels, leading to the breakup of droplets at the throat. Snap-off plays a…
Abyssal Stratification Change in the Southwest Pacific Basin
As abyssal ocean properties are altered by climate change, density stratification may be expected to change in response. This shift can affect the buoyancy flux, internal wave gen…
Social Resilience to Nuclear Winter: Lessons from the Late Antique Little Ice Age.
The threat of nuclear winter from a regional nuclear war is an existential hazard that must be addressed to ensure the shared future of humanity. Here a cross-cultural analysis of…
Sub-cloud turbulence explains cloud-base updrafts for shallow cumulus ensembles: First observational evidence
Sub-cloud turbulent kinetic energy has been used to parameterize the cloud-base updraft velocity ( w b ) in cumulus parameterizations. The validity of this idea has never been pro…
Unprecedented drought challenges for Texas water resources in a changing climate: what do researchers and stakeholders …
Long-range water planning is complicated by factors that are rapidly changing in the 21st century, including climate, population, and water use. Here, we analyze climate factors a…
Seasonality in Southern Ocean isoscapes
Polar marine ecosystems are particularly vulnerable to the effects of climate change. Warming temperatures, freshening seawater and disruption to sea ice formation potentially all…
Platelet Ice under Arctic Pack Ice in Winter
The formation of platelet ice is well known to occur under Antarctic sea ice, where sub-ice platelet layers form from supercooled ice shelf water. In the Arctic however, platelet …
South America Intraseasonal Precipitation: A Normal-Mode Approach
An alternative approach to assess the South America intraseasonal variability is presented. In this study, we use a normal-mode decomposition method to decompose the South America…
Radio waves and whistler-mode waves in solar wind and their interactions with energetic electrons
The role of waves in the propagation, scattering and energization of electrons in the solar wind has long been a topic of interest. Conversely, understanding the excitation of wav…
Thermal Regime, Legacy Structures, Upper Mantle Hydration and Lithospheric-Scale Magmatic Processes of the Antarctic In…
Large-scale electrical resistivity investigations of the Antarctic crust and upper mantle utilizing the magnetotelluric method (MT) are limited in number compared to temperate reg…
Intercomparison of the Performance of Four Data Assimilation Schemes in a Limited-Area Model on Forecasts of an Extreme…
This study compares the performance of four data assimilation (DA) systems: Ensemble Adjustment Kalman Filter (EAKF), Variational (3DVAR/4DVAR), and Hybrid ensemble-3DVAR (HYBRID)…
Toward More Realistic Simulation and Prediction of Dust Storms on Mars
Atmospheric dust is a more extreme modifier of weather and climate on Mars than water vapor is on Earth. Global dust storms enshroud Mars in a veil of dust for months and have maj…
Time Series Phase Unwrapping Based on Graph Theory and Compressed Sensing
We present a new time series PU approach to improve the unwrapping accuracy in this article. The rationale behind is to first improve the sparse unwrapping by mitigating the phase…
Wind filtering evidence of mesospheric short-period gravity waves revealed from all-sky images at King Sejong Station (…
We analyzed OH airglow images observed from an all-sky camera at King Sejong Station, Antarctica for the period of 2012–2016. Using M-transform method, 2D-power spectra of short p…
Coda-Wave Based Monitoring of Pore-Pressure Depletion-driven Compaction of Slochteren Sandstone Samples from the Gronin…
Pore-pressure depletion in sandstone reservoirs is well known to cause both elastic and inelastic compaction, often resulting in notable surface subsidence and induced seismicity.…
TENERIFE 2019 EVENT : Piezoelectric and Earth Lightning Volcano Effects *
The paper presents two newly geophysical effects from Volcano activity not yet described that aids to explain a Zero Energy occurred at Tenerife (Canary Islands) on September 29, …
Looking for technosignatures using the brain and Artificial Intelligence
Technosignatures involves the detection of radio signals, lasers, atmospheric pollution, radiation leakage from megastructures or sidereal installations such as Dyson spheres, Shk…
Controls on sinking velocities and mass fluxes of size-fractionated marine particles in recent U.S. GEOTRACES cruises
Particle composition is an important parameter that influences sinking velocity of marine particles. Most current studies, however, are limited by either a lack of routine measure…
Aquatic Biogeochemical Eddy Covariance Fluxes in the Presence of Waves
The eddy covariance (EC) technique is a powerful tool for measuring atmospheric exchange rates that was recently adapted by biogeochemists to measure aquatic oxygen fluxes. A revi…
The ephemeral and elusive ocean carbon response to COVID-related emissions reductions
The decline in global emissions of carbon dioxide due to the COVID-19 pandemic provides a unique opportunity to investigate the sensitivity of the global carbon cycle and climate …
Disentangling the impact of catchment heterogeneity on nitrate export dynamics from event to long-term time scales
Defining effective measures to reduce nitrate pollution in heterogeneous mesoscale catchments remains challenging if based on concentration measurements at the outlet only. One re…
Skewness of Temperature Data Implies an Abrupt Change in the Climate System between 1985 and 1991
Instrumental records of mean annual temperature extend back to the seventeenth and eighteenth centuries at multiple sites in Europe. For such long time series, we expect and find …
Ganymede–induced decametric radio emission: in-situ observations and measurements by Juno
At Jupiter, part of the auroral radio emissions are induced by the Galilean moons Io, Europa and Ganymede. Until now, they have been remotely detected, using ground-based radio-te…
Correcting a fundamental mistake in radiation physics shows how the middle atmosphere plays the primary role in determi…
The thermal and chemical structure of the middle atmosphere is determined by molecules of air absorbing high-energy, solar, ultraviolet radiation. The dominant photochemical react…
Improved Flood Forecasting in Ungauged Basins: Constrained Runoff Correction Using Multiple Satellite Products
Satellite-based precipitation products (SPPs) with short latencies provide a new opportunity for flood forecasting in ungauged basins. However, the larger uncertainties associated…
Patterns, drivers, and ecological implications of upwelling in coral reef habitats of the southern Red Sea
Coral reef ecosystems are highly sensitive to thermal anomalies, making them vulnerable to ongoing global warming. Yet, a variety of cooling mechanisms, such as upwelling, offer s…
A 1,470-Year Astronomical Cycle and Its Effect on Earth's Climate
Earth's millennial climate cycle has been studied by scientists for decades, but its cause has been lacking. It warms the Earth for several hundred years and melts some of the ice…
Where and Why Do Submarine Canyons Remain Connected to the Shore During Sea-level Rise? - Insights from Global Topograp…
The efficiency of sediment routing from land to the ocean depends on the position of submarine canyon heads with regard to terrestrial sediment sources. We aim to identify the mai…
A method to update model kinematic states by assimilating satellite-observed total lightning data to improve convective…
The close connection between the total lightning flash rate and storm updraft has been well recognized. In this study, we assessed the benefit of such a relationship in convective-…
Missing water from the Qiantang Basin on the Tibetan Plateau
The Qiangtang Basin is a large endorheic basin as the inner part of the Tibetan Plateau and has been thought to be a dry region in contrast with its wet surrounding outer region t…
Efficient extraction of past seawater Pb and Nd isotope signatures from Southern Ocean sediments
Radiogenic lead (Pb) and neodymium (Nd) isotope compositions extracted from authigenic phases in marine sediments are sensitive tracers to reconstruct past ocean circulation and w…
Rayleigh Waves Excited by Hurricanes on the Southeastern Coast of the United States
By cross-correlating ambient seismic noise, researchers have made significant progress in retrieving Empirical Green’s Functions (EGFs) in the past two decades. EGFs emerging with…
Energy spectra of electrons and gamma rays produced by the electron accelerator in thunderclouds
We measure energy spectra of electrons and gamma rays of electromagnetic avalanches developed in the electrified atmosphere as they arrive at the earth’s surface at 3200 m height …
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