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Showing 10951 to 11000 of 22070 works
Global sensitivity analysis of dike stability under maximum static groundwater heads
With a large network of dikes that in the future will protect up to 15% of the world’s population from flooding, more extreme river discharges that result from climate change will…
Barrier Layers in a High-resolution Model in the Eastern Tropical Pacific
This study examines salinity barrier layers (BLs) in the eastern tropical North Pacific in the region of the Salinity Processes in the Upper ocean Regional Studies-2 field campaig…
Theory for Pressure-dependent Melting Temperature of Metals
We present a theory of pressure-dependent melting temperature to describe the physical fact that both cooling and pressurization can cause the solidification of liquid metal. Base…
The role of pre-magmatic rifting in shaping a volcanic continental margin: An example from the Eastern North American M…
Both magmatic and tectonic processes contribute to the formation of volcanic continental margins. Such margins are thought to undergo extension across a narrow zone of lithospheri…
Empirical prediction of short-term annual global temperature variability
Global mean surface air temperature (T) variability on subdecadal timescales can be of substantial magnitude relative to the long-term global warming signal and such variability h…
Correlation based time evolution of the archeomagnetic field
In a previous study, a new snapshot modeling concept for the archeomagnetic field was introduced (Mauerberger et al. 2020). By assuming a Gaussian process for the geomagnetic pote…
Revisiting the Detection of Lightning Superbolts
This study uses Fast On-Orbit Detection of Transient Events (FORTE) satellite observations to identify superbolt-class optical lightning events and evaluate their origins. Superbo…
Discovery of an exoplanet quartet transiting HD 108236
We report the discovery and validation of four extrasolar planets hosted by the nearby, bright, Sun-like (G3V) star HD~108236 using data from the Transiting Exoplanet Survey Satel…
Episodic Buckling and Collapse -- An alternative to the Slow Slip hypothesis
We observe a remarkable correlation between the inter-tremor time interval and the slenderness ratio of the overriding plate in subduction zones all over the world. In order to un…
Abyssal Pathways and the Double Silica Maximum in the Northeast Pacific Basin
This study examines causes of the double silica maximum in the deep interior Northeast Pacific Basin using a stochastic Lagrangian tracer model based on steady-state advective fie…
Potential for electric vehicle adoption to mitigate extreme air quality events in China
Electric vehicle (EV) adoption promises potential air pollutant and greenhouse gas (GHG) reduction co-benefits. As such, China has aggressively incentivized EV adoption, however m…
Historical and prehistorical volcanic geoheritage in Canary Islands
Canary Islands constitute an active volcanic archipelago. From the time immediately before the Castilian conquest of the islands, 17 volcanic eruptions have occurred: 2 prehispani…
A magnetic data correction workflow for sparse, four dimensional data
High-quality aeromagnetic data are important in guiding new knowledge of the solid earth in frontier regions, such as Antarctica, where these data are often among the first data c…
Strengthened causal connections between the MJO and the North Atlantic with climate warming
While the Madden Julian Oscillation (MJO) is known to influence the midlatitude circulation and its predictability on subseasonal-to-seasonal (S2S) timescales, little is known how…
Flood irrigation agriculture: the challenges of in-situ soil moisture monitoring in lands with high clay contentΑ
Soil moisture is an essential measurement to manage water and improve crop production. However, agricultural research in the Yaqui Valley (in northwestern Mexico) with extensive w…
Sampling Grid Shifting Algorithm: A Non-ergodic Spatial Bootstrap Technique for Regular and Irregular Sampling Patterns
Accounting for uncertainty in statistical model parameters is an essential part of geostatiscal reservoir characterization. While parameter uncertainty may be assessed in its ergo…
ProLB: A lattice Boltzmann solver of large-eddy simulation for atmospheric boundary layer flows
A large-eddy simulation (LES) tool is developed for simulating the dynamics of atmospheric boundary layers using lattice Boltzmann method (LBM), which is an alternative approach f…
Study on Stress-Temperature Coupled Damage Model of Warm Frozen Soil
Warm frozen soil is very sensitive to temperature change in the near phase transition region, and the relationship between temperature and physical and mechanical properties can b…
Larger spatial footprint of wintertime total precipitation extremes in a warmer climate
The simultaneous occurrence of extremely wet winters at multiple locations in the same region can contribute to widespread flooding and associated socio-economic losses. However, …
Trust and transboundary groundwater cooperation
International transboundary aquifers provide important water supplies to over 150 countries. Long-term sustainability of these aquifers requires transboundary cooperation and yet …
Role of surface latent heat flux in shallow cloud transitions: A mechanism-denial LES study
Surface latent heat flux (LHF) has been deemed as the determinant driver of the stratocumulus-to-cumulus transition (SCT). The distinct signature of the LHF in driving the SCT, ho…
Abiotic drivers of a deep cyanobacteria layer in a stratified and eutrophic lake
Harmful algal blooms (HABs), in particular those consisting of the cyanobacteria \textit{Microcystis}, are becoming increasingly more common across the globe. Despite the growing …
Comprehensive estimate of the anthropogenic aerosol radiative effects using an atmospheric model with reduced aerosol f…
The simplified anthropogenic aerosol optical properties and an associated Twomey effect provided by CMIP6 (i.e., MACv2-SP) were used in the Grid-point Atmospheric Model of IAP LAS…
Intensifying Australian heatwave trends and their sensitivity to observational data
Heatwaves are an accustomed extreme event of the Australian climate and cause catastrophic impacts on human health, agriculture, and urban and natural systems. Heatwaves are measu…
The Tractrix Magnetopause: A Novel Physics-Based Functional Form for the Magnetopause Shape
A new model for the shape of the magnetopause is presented using a closed-form analytic function known as a tractrix. This shape is derived from several physics-based underpinning…
Solar and magnetic control of minor ion peaks in the dayside Martian ionosphere
The Neutral Gas and Ion Mass Spectrometer of the Mars Atmosphere and Volatile Evolution provides a large data set to explore the ion composition and structure of the Martian ionos…
Relationship between the tropical tropopause and tropical easterly jet streams over Indian monsoon region
This paper presents the first quantitative relationship between the cold point tropopause (CPT) and tropical easterly jet (TEJ) using radiosonde observations over Gadanki (13.45oN…
The Combined Influence of Lower Band Chorus and ULF waves on Radiation Belt Electron Fluxes at Individual L-shells
We investigate the timing and relative influence of VLF in the chorus frequency range observed by the DEMETER spacecraft and ULF wave activity from ground stations on daily change…
Joint CO2 Mole Fraction and Flux Analysis Confirms Missing Processes in CASA Terrestrial Carbon Uptake over North Ameri…
Terrestrial biosphere models (TBMs) play a key role in detection and attribution of carbon cycle processes at local to global scales and in projections of the coupled carbon-clima…
Buoyancy Glider Observations of Current Velocities in the Northwestern Mediterranean Sea During April 2018
Geophysical observations collected by The University of Texas at San Antonio’s (UTSA) SeaExplorer, an autonomous, buoyancy-driven, underwater glider equipped with an Acoustic Dopp…
Fingerprints of External Forcings on Sahel Rainfall: Aerosols, Greenhouse Gases, and Model-Observation Discrepancies
Over the 20th and 21st centuries, both anthropogenic greenhouse gas increases and changes in anthropogenic aerosols have affected rainfall in the Sahel. Using multiple characteris…
Where are the proto-South China Sea slabs? SE Asian plate tectonics and mantle flow history from global mantle convecti…
The plate tectonic history of the hypothesized ‘proto-South China Sea’ (PSCS) ocean basin and surrounding SE Asia since Cenozoic times is controversial. We implement four diverse …
Coherent streamflow variability in Monsoon Asia over the past eight centuries---links to oceanic drivers
The Monsoon Asia region is home to ten of the world’s biggest rivers, supporting the lives of 1.7 billion people who rely on streamflow for water, energy, and food. Yet, a synthes…
The interaction between the turbulence and gravity wave observed in the middle stratosphere based on the round-trip int…
Based on the round-trip intelligent sounding system, we used the structure function and spectrum analysis method to analyze the interaction between the small-scale gravity wave an…
Archetypes and Controls of Riverine Nutrient Export Across German Catchments
Elevated nutrient inputs and reduced riverine concentration variability challenge the health and functioning of aquatic ecosystems. To improve riverine water quality management, i…
Impact craters on 2014 MU69: Implications for Kuiper belt object size-frequency distributions and planetesimal formation
Impact craters in the Pluto system as observed by New Horizons in July of 2015 revealed a previously-unknown deficit of small Kuiper belt objects (KBOs) less than ~1–2 km in diame…
Inherent length scales of periodic mesoscale density structures in the solar wind over two solar cycles
It is now well-established through multiple event and statistical studies that the solar wind at 1 AU contains contains periodic, mesoscale (L~100-1000Mm) structures in the proton…
Microphysical modeling of carbonate fault friction at slip rates spanning the full seismic cycle
Laboratory studies suggest that seismogenic rupture on faults in carbonate terrains can be explained by a transition from high friction, at low sliding velocities ( V ), to low fr…
Impact of the Indian Ocean temperature - phytoplankton feedback on simulated South Asia climate
A regional Earth System Model has been implemented for the South Asia region. We investigate the effect of the marine biogeochemical feedback which affects the attenuation of the …
Moment-duration scaling of Low-Frequency Earthquakes in Guerrero, Mexico
Low-frequency earthquakes (LFEs) are detected within tremor, as small, repetitive, impulsive low-frequency (1-8 Hz) signals. While the mechanism causing this depletion of the high…
Towards improved hazard assessments for large effusive eruptions: Lava flow advance during the 2018 Kīlauea Lower East …
The 2018 eruption of Kīlauea volcano produced the largest and most destructive lava flows in the lower East Rift Zone (LERZ) in the past 200 years. Average effusion rates exceeded…
Geophysical investigation of exchange between planetary oceans and rocky interior- knowledge from deep sea scenarios on…
Insights from half a century investigating seafloor hydrothermal circulation on Earth can inform exploration on other Ocean Worlds. Early data/models for Earth provided useful pre…
River bank erosion and lateral accretion linked to hydrograph recession and flood duration in a mountainous snowmelt-do…
Changes in the magnitude and frequency of river flows have potential to alter sediment dynamics and morphology of rivers globally, but the direction of these changes remains uncer…
Contribution of biological effects to carbonate-system variations and the air-water CO2 flux in inner and outer bays in…
We evaluated the contribution of biological effects (photosynthesis, respiration, and decomposition) to the carbonate parameters and air-water CO 2 fluxes in Tokyo Bay, Ise Bay an…
Space & time variability of pan-Arctic estimates of internal wave-driven dissipation, mixing, and heat fluxes infer…
Quantifying mixing rates in the Arctic Ocean is critical to our ability to predict heat flux, freshwater distribution, and circulation. However, turbulence measurements in the Arc…
Calculating Required Purification Effort to Turn Source Water into Drinking Water Using an Adapted CCME Water Quality I…
The 2000 European Union Water Framework Directive (WFD) states that ‘Member States shall ensure the necessary protection for the bodies of water identified with the aim of avoidin…
Wood isotope variation (δ18O and δ13C) suggest new insights on growth rhythms in trees from the neotropical rainiest fo…
The drivers of tree growth are one critical question in forest ecology and conservation. However, the measurement of tree growth is a difficult task that requires novel methods to…
Ion and electron heating at quasi-parallel bow shocks
Measurements from the Magnetospheric Multiscale (MMS) mission indicate that the density gradients associated with nonlinear compressional structures (shocklets) in a quasi-paralle…
Electromagnetic Radial Diffusion in the Earth's Radiation Belts as Determined by the Solar Wind Immediate Time History …
Diffusion-driven radiation belt models require multiple physics-based inputs to specify the radiation environment through which spacecraft travel, including diffusion coefficients…
Aeolian Changes at the InSight Landing Site on Mars: Multi-instrument Observations
Orbital and surface observations demonstrate that aeolian activity is occurring on Mars. Here we report the aeolian changes observed in situ by NASA's InSight lander during the fi…
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