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Showing 6351 to 6400 of 59105 works
On the High Temperature of the Corona
The high temperature of the corona, 2 x 10 6 K, recognized by the presence of highly ionized atoms, such as Fe XIV , is caused by the ionization of accelerated electrons by a doub…
Ensemble Generation For Hurricane Hazard Assessment Along The United States' Atlantic Coast
Scarcity of available records is a major hindrance in hurricane hazard assessment. In addition, frequency analysis on maximum intensities of all historical storms is incapable of …
Post-wildfire Generation of Debris-flow Slurry by Rill Erosion on Colluvial Hillslopes
Overland flow self-organized into rills and eroded colluvium from steep hillslopes after a wildfire in the Santa Ynez Mountains. During 12-15 minutes of runoff, rill erosion gener…
Baseline vector repeatability at the sub-millimeter level enabled by radio interferometer phase delays of intra-site ba…
We report the results of position ties for short baselines at eight geodetic sites based on phase delays that are extracted from global geodetic very-long-baseline interferometry …
Full Reynolds stress tensor of convective turbulence estimated with paired acoustic Doppler current profilers
Convective turbulence driven by gravitational instability is a fundamental mixing mechanism in geophysical flows, but in situ estimation of its characteristics is obscured by the …
Radar interferometric phase errors induced by Faraday rotation
Ionospheric Faraday rotation distorts satellite radar observations of the Earth's surface. While its impact on radiometric observables is well understood, the errors in repeat-pas…
Drawdown of Atmospheric pCO2 via Variable Particle Flux Stoichiometry in the Ocean Twilight Zone
The strength of the biological soft tissue pump in the ocean critically depends on how much organic carbon is produced via photosynthesis and how efficiently the carbon is transfe…
PetroChron Antarctica: a Geological Database for Interdisciplinary Use
We present PetroChron Antarctica, a new relational database including petrological, geochemical and geochronological datasets along with computed rock properties from geological s…
Major mineral fraction and physical properties of carbonated peridotite (listvenite) from ICDP Oman Drilling Project Ho…
We evaluated the mineral fractions of listvenite (completely carbonated peridotite) in Hole BT1B drilled by the ICDP Oman Drilling Project from 3D X-ray Computed Tomography (XCT) …
Process feedbacks that control transport capacity at formative flows in laterally-constrained gravel-bed rivers: a labo…
In gravel-bed rivers, deterministic approaches to predicting bedload transport use the mean bed shear stress (termed one-dimensional or ‘1D’ equations) or integrate across the fre…
Sea Ice Rheology Experiment (SIREx), Part II: Evaluating simulated linear kinematic features in high-resolution sea-ice…
Simulating sea-ice drift and deformation in the Arctic Ocean is still a challenge because of the multi-scale interaction of sea-ice floes that compose the Arctic sea ice cover. Th…
Sea Ice Rheology Experiment (SIREx), Part I: Scaling and statistical properties of sea-ice deformation fields
As the sea-ice modeling community is shifting to advanced numerical frameworks, developing new sea-ice rheologies, and increasing model spatial resolution, ubiquitous deformation …
Bayesian multi-model estimation for fault slip distribution: the effect of prior constraints in the estimation for slow…
We consider a Bayesian multi-model fault slip estimation (BMMFSE), in which many candidates of the underground-structure model characterized by a prior probability density functio…
An accurate analytical model for squirt flow in anisotropic porous rocks -Part 1: Classical geometry
Seismic wave propagation in porous rocks that are saturated with a liquid exhibits significant dispersion and attenuation due to fluid flow at the pore scale, so-called squirt flo…
Carbon emissions from the edge of the Greenland Ice sheet reveal subglacial processes of methane and carbon dioxide tur…
Emission of methane (CH and CO 2 . In situ mole fractions of CH 4 and CO 2 were measured in the subglacial air at a subglacial river outlet where emissions of CH 4 and CO 2 had be…
Monitoring Relative Surface Soil Moisture Changes Across the Thames Basin using Sentinel-1
Soil moisture is a critical component in many meteorological, hydrological, and agricultural applications, and understanding its spatial and temporal dynamics is vital for the und…
PyGLImER: A New Modular Software Suite to Image Crustal and Upper-Mantle Discontinuities Using a Global Database of Ps …
Over the last decades, the receiver function technique has been widely used to image sharp discontinuities in elastic properties of the solid Earth at regional scales. To date, ve…
Laboratory Modelling of Sill Emplacement: Part 2 - sill segmentation
It is increasingly recognised that most sheet-like igneous intrusions such as sills and dykes have segmented, rather than planar margins. The geometry of these segments and their …
Oscillatory loading can alter the velocity rate dependence of ice-on-rock friction
Rate and state frictional parameters are typically determined using two types of experimental protocols: velocity steps and slide-hold-slide events. Here we take a new approach by…
Flow regulates biological NO3 -and N2O production in a turbid sub-tropical stream
Streams play a critical role in attenuating the excess reactive nitrogen generated from human activities. These systems can consequently also emit significant amounts of N2O, a po…
The Superior Conjunction Experiment of BepiColombo
Launched in October 2018, the ESA/JAXA BepiColombo mission is currently in cruise to reach Mercury in late 2025. The Mercury Orbiter Radioscience Experiment (MORE) is one of the 1…
In-Situ (U-Th)/He Dating of Martian Apatites: Low-Temperature Thermal Processes in the Late Amazonian Martian Regolith …
Apatite – Ca5(PO4)3(OH,F,Cl) – is a common accessory mineral in many terrestrial rocks and has a low (~75˚C) closure temperature for He retention[1]. As such the (U-Th-Sm)/He ther…
Structure of the electrical double layer at the ice-water interface
The surface of ice in contact with water contains sites that undergo deprotonation 6 and protonation, and can act as adsorption sites for aqueous ions. Therefore, an electrical do…
Electrostatic model for antenna signal generation from dust impacts
Dust impacts on spacecraft are commonly detected by antenna instruments as transient voltage perturbations. The signal waveform is generated by the interaction between the impact-…
Variation of geomagnetic index empirical distribution and burst statistics across successive solar cycles.
The overall level of solar activity, and space weather response at earth, varies within and between successive solar cycles and can be characterized by the statistics of bursts, t…
Forecast of the Global TEC by Nearest neighbour technique
We propose a method for Global Ionospheric Maps of Total Electron Content forecasting using the Nearest Neighbour method. The assumption is that in a database of global ionosphere…
Cyanobacteria and Algae Meet at the Limits of their Habitat Ranges in Moderately Acidic Hot Springs
Microbial oxygenic photosynthesis in thermal habitats is thought to be performed by Bacteria in circumneutral to alkaline systems (pH > 6) and by Eukarya in acidic systems (pH < 3…
First comparison of travelling atmospheric disturbances observed in the middle thermosphere by GOLD to travelling ionos…
Travelling ionospheric disturbances (TIDs) and their neutral counterparts known as travelling atmospheric disturbances (TADs) are believed to play a central role in redistributing…
Offshore sea levels measured with an anchored spar-buoy system using GPS interferometric reflectometry
Conventional tide gauges are usually housed along the coast. Satellite altimetry works well in the open ocean but poorly near the coast due to issues such as signal contamination …
Nutrient transport pathways during winter in the Lower St. Lawrence Estuary
The St. Lawrence Estuary connects the Great Lakes with the Atlantic Ocean. During summer, the Estuary’s surface layer receives its nutrient supply from vertical mixing processes c…
Investigation of flow characteristics of landslide materials through pore space topology and complex network analysis
Unlike embankments, earth dams, and other man-made structures, most landslide dams are formed by rapid accumulation of rock or debris rather than mechanical compaction; thus, they…
An Improved Solar Spectral Irradiance Composite Record
The solar spectral irradiance (SSI) data set is a key record for studying and understanding the energetics and radiation balance in Earth’s environment. Understanding the long-ter…
Joint inversion of receiver functions and apparent incidence angles for sparse seismic data
The estimation of crustal structure and thickness is instrumental in understanding the formation and evolution of terrestrial planets. Initial planetary missions with seismic inst…
Illuminating the pre-, co-, and post-seismic phases of the 2016 M7.8 Kaikoura earthquake with 10 years of seismicity
The 2016 M7.8 Kaikōura earthquake is one of the most complex earthquakes in recorded history, with significant rupture of at least 21 crustal faults. Using a matched-filter detect…
The Influence of Ocean Coupling on Simulated and Projected Tropical Cyclone Precipitation in the HighResMIP-PRIMAVERA S…
This study aims to quantify the impacts of ocean coupling on simulated and projected tropical cyclone (TC) precipitationin the Northern Hemisphere. We used global climate model (G…
Evaluation of a Commercial Equipment Award Program
In 2012, Aquatec launched an equipment award scheme for postgraduate students and early career scientists. Successful recipients with limited budgets gain free access to high qual…
Transport structure of the South Atlantic Ocean derived from a high-resolution numerical model and observations
The South Atlantic Ocean plays an important role in the Atlantic meridional overturning circulation (AMOC), connecting it to the Indian and Pacific Oceans as part of the global ov…
A new way to evaluate association rule mining methods and its applicability to mineral association analysis
There has been a significant increase in the amount and accuracy of mineral data (from resources like Mindat, MED or the GEMI) and the improvements in technological resources make…
Constraints on the latitudinal profile of Jupiter's deep jets
The observed zonal winds at Jupiter’s cloud tops have been shown to be closely linked to the asymmetric part of the planet’s measured gravity field. However, other measurements su…
A locally smoothed terrain-following vertical coordinate to improve the simulation of fog and low stratus in numerical …
The correct simulation of fog and low stratus (FLS) is a difficult task for numerical weather prediction (NWP) models. The Swiss Plateau experiences many days with FLS in winter. …
Modeling the Shuram δ13C Excursion as the onset of calcium carbonate biomineralization by acritarchs
The Shuram excursion, an extremely negative and prolonged carbonate δ13C anomaly, is recorded globally in late Ediacaran shallow-water marine sedimentary sequences and coincided w…
Poroelastic stress triggered seismic activity in the Changning shale gas hydraulic fracturing region, Sichuan Basin, Ch…
The recent increase in the seismic activity in the southern Sichuan Basin, China, is potentially related to shale gas hydraulic fracturing. However, the detailed mechanism of hydr…
MMS Observations of Super Thin Electron-Scale Current Sheets in the Earth's Magnetotail
Strong flapping of the Current Sheet (CS) associated with the propagation of high-velocity bulk flows allowed to observe the Super Thin Current Sheet (STCS) in the magnetotail Pla…
P-wave Velocity Structure of the Lower Crust and Uppermost Mantle Beneath the Sichuan-Yunnan (China) Region
We conduct a tomographic inversion for the 3-D P-wave velocity structure in the lower crust and uppermost mantle of the Sichuan-Yunnan region in the southeastern margin of the Tib…
Cloud Microphysics in Global Cloud Resolving Models
Global cloud resolving models (GCRMs) are a new type of general circulation model that explicitly calculates the growth of cloud systems with fine spatial resolutions and more tha…
Water Data Utilization and Capacity Building in the Mekong Region: Improved Hydrologic Decision Support for the Mekong …
This contribution highlights part of training events designed to collect, analyze, and manage water and water-related data (e.g., climate, weather, land, soils) and information pr…
Controls on Physical and Chemical Denudation in a Mixed Carbonate-Siliciclastic Orogen
Mixed siliciclastic and carbonate active orogens are common on Earth’s surface, yet most studies have focused on physical erosion and chemical weathering in silicate-rich landscap…
Preferential Alignment and Heterogeneous Distribution of Non-spherical Swimmers Near Lagrangian Coherent Structures
We report the interaction between non-spherical swimmers and a long-standing flow structure, Lagrangian coherent structures (LCSs), in a weakly turbulent two-dimensional flow. Usi…
Impacts of Large-Scale Sahara Photovoltaic Solar Farms on Global Climate and Vegetation Cover
Solar energy, if carefully planned, can contribute to the attainment of global climate mitigation goals by reducing reliance on fossil fuel energy. It has been suggested that larg…
The mechanisms of cloudiness evolution responsible for equilibrium climate sensitivity in climate model INM-CM4-8
The effect of changes in cloudiness parameterization on the equilibrium climate sensitivity (ECS) of the climate model INM-CM4-8 is investigated. The reasonable changes in paramet…
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