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Showing 12751 to 12800 of 22070 works
Standards and Best Practices -- Two NASA Examples
Formal international standards as well as promotion of community or recommended practices have their place in ensuring “FAIRness” of data. Data management in NASA’s Earth Observat…
IRIS Observational Seismology - Looking Back and Looking Ahead
Over the past third of a century the Incorporated Research Institutions for Seismology (IRIS) has facilitated observational seismology in many ways. At the beginning of IRIS in 19…
Estimating mean bedload transport rates and their uncertainty
Measuring bedload transport rates usually involves measuring the flux of sediment or collecting sediment during a certain interval of time $\Delta t$. Because bedload transport ra…
A mesoscale wave-like structure in the nighttime equatorial ionization anomaly
Both ground- and satellite-based airglow imaging have significantly contributed to our understanding of the low-latitude ionosphere, especially of the morphology and dynamics of t…
Changing Seasonality of Annual Maximum Floods over the Conterminous US
Understanding the flood generating mechanisms that influence flood seasonality in a region provides information on setting up relevant contingency measures. While former studies h…
Constraining plateau uplift in southern Africa by combining thermochronology, sediment flux, topography, and landscape …
The uplift of the southern African Plateau is often attributed to mantle processes, but there are conflicting theories for the specific timing and drivers of topographic developme…
Evaluating the glacial-deglacial carbon respiration and ventilation change hypothesis as a mechanism for changing atmos…
The prevailing hypothesis to explain pCO 2 rise at the last glacial termination calls upon enhanced ventilation of excess respired carbon that accumulated in the deep sea during t…
Radiative effects of reduced aerosol emissions during the COVID-19 pandemic and the future recovery
The pandemic in 2020 caused an abrupt change in the emission of anthropogenic aerosols and their precursors. We provide the first estimate of the associated change in the aerosol …
Normalization method and application for MODIS TEB assessments using Earth scene measurements
Selected Earth targets are commonly used for satellite sensor calibration assessments (e.g. sensor stability and inter-comparisons). Moreover, typical scenes used for the calibrat…
Eoarchean subduction-like magmatism recorded in ca. 3750 Ma mafic-ultramafic rocks of the Ukaliq supracrus-tal belt (Qu…
Our understanding of the nature of crustal formation in the Eoarchean is severely curbed by the scarcity and poor preservation of the oldest rocks, and variable and imperfect pres…
A Unique Diel Pattern in Carbonate Chemistry in the Seagrass Meadows of Dongsha Island: implications for ocean acidific…
In contrast to most seagrass meadows where seawater carbonate chemistry generally shows strong diel variations with a higher pH during the daytime and a lower pH during nighttime …
Investigation of the Relation Between Magnetospheric Activity and Solar Wind Parameters Based on Potential Learning
Nowadays, it is so important in saving our economic activity and evading the disasters caused by terrestrial electromagnetic effects to predict both temporal and spatial scales of…
Effect of Biogeomechanical Altered Properties on Geologic Carbon Storage in Unconventional Reservoirs
Geologic carbon storage (GCS) is part of a process known as carbon capture, utilization, and storage (CCUS); being adopted to mollify extreme weather events (global warming) as a …
Integrating Arctic plant functional types in a land surface model using above- and belowground field observations
Accurate simulations of high latitude ecosystems are critical for confident Earth system model (ESM) projections of carbon cycle feedbacks to global climate change. Land surface m…
Influence of Obliquely Propagating Monsoon Gravity Waves on Southern Polar Summer Mesosphere after Stratospheric Sudden…
Oblique propagation of gravity waves (GWs) refers to latitudinal propagation (or vertical propagation away from their source) from the low latitude troposphere to the polar mesosp…
Micro-nano-scale Stimulation of Coalbed Methane Reservoir: Experimental Hydraulic Fracturing and Pore Connectivity
The role of micro-nano-scale stimulation of coalbed methane (CBM) reservoir is to open the fracture and pore channels, improve gas desorption and migration capabilities, and there…
Predicting vertical concentration profiles in the marine atmospheric boundary layer with a Markov chain random walk mod…
In an effort to better represent aerosol transport in meso- and global-scale models, large eddy simulations (LES) from the NCAR Turbulence with Particles (NTLP) code are used to d…
Deep into the Chibougamau area, Abitibi greenstone belt: structure of a Neoarchean crust revealed by seismic reflection…
Copper-Au magmatic-hydrothermal systems dominate in the Chibougamau area of the Neoarchean Abitibi subprovince (greenstone belt) of the Superior Province (craton), whereas orogeni…
Slope-Weighted Eccentricity: Automatic Terrain Classification of Atlantic Ocean Crust
The shapes and directionality of bathymetry at slow-spreading ridges are key to understanding the magmatic or tectonic emplacement of the crust. Magmatic terrain is marked by line…
The Prediction Method of Tropical Cyclone Intensity Change Based on Deep Learning
A prediction algorithm of tropical cyclone (TC) intensity change based on deep learning is proposed by exploring the distribution characteristics of atmospheric and oceanic elemen…
Reach-scale bankfull channel types can exist independently of catchment hydrology
Reach-scale morphological channel classifications are underpinned by the theory that each channel type is related to an assemblage of reach- and catchment-scale hydrologic, topogr…
Remote Investigation of compositionally distinct lithologies at and around the central peaks of some recent craters and…
Central peaks of lunar complex craters of Copernican period provide best examples to study morphologies of impact melts and exposed subsurface as they are better preserved and les…
Spatial and seasonal variations of surface ozone formation regime and source attributions in the Guanzhong Basin, China
Rapid increasing industries and city expansions have caused severe air pollution in the Guanzhong Basin (GZB), China in recent decades. Observations reveal that, although implemen…
Interactive 3D Visualization and Dissemination of UAV-SfM Models for Virtual Outcrop Geology
The potential of high resolution 3D datasets is being increasingly realized in an expanding number of geoscience applications. However, sharing of these datasets and interpretatio…
Computational Simulations of Bed Surface Variability 1 and Particle Entrainment in a Gravelbed River
Key Points: 8 • Bed heights of bedload-dominated rivers modeled by Distinct Element Method (DEM) 9 simulations follow a Gaussian distribution. 10 • The standard deviation of bed h…
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…
It is time for a new intensive air quality field campaign in Mexico City
Air quality policies based on scientific information have proved to be effective for controlling air pollution and protecting public health. Intensive field studies provide knowle…
Reproducibility of Indian summer monsoon rainfall in convection permitting Weather Research Forecasting model
Dynamical downscaling of Indian summer monsoon rainfall (ISMR) by using regional climate models (RCMs) portrays the inability of the RCMs in simulating the ISMR, and certain syste…
Development of fast sampling and high recovery extraction method for stable isotope measurement of gaseous mercury in t…
10 Techniques for fast large-volume sampling of total gaseous mercury (TGM) in the air 11 and extracting the TGM with 5 mL acid solution were developed for stable mercury 12 isoto…
Unveiling the effects of soil composition on surface motion during seismic events
The degree of damage on buildings due to earthquakes is strongly dependent on the properties of the subsurface at that specific site. The shallow geology of the Netherlands consis…
The Vertical Component of Low Magnitude Earthquakes, Why Do We Care?
Up to now, almost all of the ground motion modeling and hazard assessment for induced seismicity in Groningen, the Netherlands, has been focused on the horizontal components of ea…
Assessing Uncertainties and Approximations in Solar Heating of the Climate System
In calculating solar radiation, climate models make many simplifications, in part to reduce computational cost and enable climate modeling, and in part from lack of understanding …
Significant Improvement of Cloud Representation in MRI-ESM2
The representations of clouds in climate model MRI-ESM2 (Yukimoto et al. 2019, JMSJ) used in CMIP6 simulations are significantly improved from the previous version MRI-CGCM3 used …
NUCLEATION OF FAST, INTERMEDIATE AND SLOW SLIP MODES ON THE SAME FAULT
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…
Consistent Predictability of the Ocean State Ocean Model (OSOM) using Information Theory and Flushing Timescales
The Ocean State Ocean Model OSOM is an application of the Regional Ocean Modeling System spanning the Rhode Island waterways, including Narragansett Bay, Mt. Hope Bay, larger rive…
Vertical Structure of the Callisto Ionosphere from Galileo Radio Occultation Data and Its Implication on the Moon's Int…
Using the magnetic field observed by Galileo during two flybys of Callisto, Khurana et al. (1998) demonstrated that Callisto generates a strong induction response to the time-vary…
The Silent Sounds of Tornadoes and Their Potential Fluid Mechanism
Sound at frequencies below the nominal bound of human hearing (~20 Hz) is called “infrasound.” Infrasound at frequencies between 0.5 and 10 Hz has been observed to be emitted by t…
Impact of drought and airborne pollutants on pediatric asthma emergency department visits in Imperial County, Californi…
The pediatric population is at a unique and increased risk of immediate and long-term health effects of asthma from air pollution. The years 2012-16 marked the worst drought in Ca…
A non-stationary harmonic model for seasonal internal tide amplitude prediction
We present an empirical model for describing the temporal variability of the internal tide, that uses seasonal harmonics to temporally modulate the amplitude of the fundamental ti…
GRACEfully closing the water balance: a data-driven probabilistic approach applied to river basins in Iran
To fully benefit from remotely sensed observations of the terrestrial water cycle, bias and random errors in these datasets need to be quantified. This paper presents a Bayesian h…
Estimates of spectral wave attenuation in Antarctic sea ice, using model/data inversion
A model-data inversion is applied to an extensive observational dataset collected in the Southern Ocean north of the Ross Sea during late autumn to early winter, producing estimat…
Regional Crustal and Lithospheric Thickness Model for Alaska, the Chukchi Shelf, and the Inner and Outer Bering Shelves
We present an integrated image of the lithosphere of Alaska and its western Chukchi and Bering seas shelves based on joint modeling of potential field data constrained by thermal …
The Structure of the Martian Quasi-perpendicular Supercritical Shock as seen by MAVEN
The Martian bow shock is a rich example of a supercritical, mass-loaded collisionless shock that coexists with ultra-low frequency upstream waves that are generated by the pick-up…
Seasonality of Tropical Photosynthesis: A Global Map of Drivers and Comparison to Model Outputs
Tropical ecosystems strongly influence Earth’s climate and weather patterns. Most tropical ecosystems remain warm year-round; nonetheless, their plants undergo seasonal cycles of …
Upper Ocean Stratification in the Eastern Pacific during the SPURS-2 Field Campaign
The region between a shallow mixed layer and a deep isothermal layer resulting from salinity stratification is called a barrier layer (BL). Since BLs hinder the surface heat and m…
Seasonal effect on hemispheric asymmetry in ionospheric horizontal and field-aligned currents
We present a statistical investigation of the seasonal effect on hemispheric asymmetry in the auroral currents during low (Kp $<$ 2) and high (Kp $\geq$ 2) geomagnetic activity. F…
Charting a Global Course for GIS Education for 2030
How and why has Geographic Information Systems (GIS) education been advancing in primary and secondary education, globally? How have GIS tools and approaches been spreading beyond…
In situ observations of microphysics, electric fields, and lightning in the trailing stratiform region of a mesoscale c…
We use airborne observations to extend a previous analysis by Lang and Rutledge (2008) of remotely sensed radar and lightning mapping array observations of the 11 June 2000 asymme…
Dust Aerosol Retrieval Over the Oceans with the MODIS/VIIRS Dark Target algorithm. Part I: Dust Detection
To prepare for implementation of a new aerosol retrieval specifically designed for dust aerosol over ocean in the operational Dark Target (DT) algorithms for the Moderate-resoluti…
Numerical simulation of sewer sediments transport with SWMM by decoupled approach
Management of sewer solids becomes an important research due to the related hydraulic and environmental problems caused by sediment deposition and flushing. Plenty of researches h…
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