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Showing 6601 to 6650 of 59105 works
Erosional and depositional behaviour of cohesive sediments across aquatic environments
Muddy sediments are abundant across aquatic ecosystems, consisting of mineral grains and biological material. Erosional characteristics of these cohesive sediments are impacted by…
Sixteen years (2002-2018) of SABER measurements and the MSIS model were used to study the average SAO (semiannual oscil…
The climatology of atomic oxygen (O) in the MLT (mesosphere and lower thermosphere) is balanced by O production via photodissociation in the lower thermosphere and recombination i…
Biologically Induced Changes in the Partitioning of Submicron Particulates Between Bulk Seawater and the Sea Surface Mi…
Studies over the last two decades have shown that submicron particulates (SMPs) can be transferred from the seawater into sea spray aerosol (SSA), potentially impacting SSA cloud …
A Process Driven Downscaling Technique to Improve Confidence in Climate Projections
Statistical downscaling plays an important role in reducing the uncertainty in regional-scale climate change studies. A major assumption of all statistical downscaling studies is …
Why Do Fluxes Near the Granular Bed Scale Differently Than Within the Transport Layer?
Some aspects of the dynamics of aeolian transport over a flat sediment bed have been thoroughly investigated and are relatively well understood. The interactions between grains in…
Probabilistic linear inversion of satellite gravity gradient data applied to the northeast Atlantic
We explore the mantle density structure of the northeast Atlantic region using constrained linear inversion of the satellite gravity gradient data based on statistical prior infor…
Post-fire Vegetation and Hydrologic Recovery in a Mediterranean Climate
Accurate field data are required to predict elevated runoff and sediment transport to aid post-fire planning. This is especially significant at the small catchment scale, where th…
Assessing the Impact of Gridded Precipitation Datasets on Blue and Green Water Flow Accounting with Two Hydrological Mo…
The hydrological behavior and freshwater availability in any typical river basin are highly dependent upon precipitation making it the most crucial input variable for hydrological…
Variable depths of magma genesis in Eastern Asia inferred from teleseismic P wave attenuation
Eastern Asia is a prime location for the study of intracontinental tectono-magmatic activity. For instance, the origin of wide-spread intraplate volcanism has been one of the most…
Recurrent large-scale solar proton events before the onset of the Wolf grand solar minimum
Carbon-14 in tree rings have suggested that there had been multiple extreme solar proton events (SPEs) in the past. While the largest events such as in 774–775 CE can be significa…
Modeling Greenhouse Gas Emissions from Sahelian Sylvo-pastoral Ecosystems
Pastoral farming in sylvo-pastoral systems remains a key activity for the local economy and food security in the Sahel. Livestock has a great impact on the carbon cycle and on gre…
The role of river discharge and geometric structure on diurnal tidal dynamics, Alabama, USA
As tides propagate inland, they become distorted by channel geometry and river discharge. Tidal dynamics in fluvial-marine transitions are commonly observed in high-energy tidal e…
NOAA's Next-Generation Cloud Archive
In the two years since the Fall 2019 meeting, NOAA/NESDIS completed two significant projects whose goal was to prototype an enterprise data management system in the cloud. The two…
Ziggy, a Portable, Scalable Infrastructure for Science Data Processing Pipelines
We describe Ziggy, an infrastructure for pipelines that process large volumes of science data. Ziggy is based on the pipeline infrastructure software that was developed to process…
Understanding the resilience of salt marshes to changes in external forcings
Salt marshes are ecosystems with significant economic and environmental value. They provide numerous ecosystem services and act as natural coastal defences by buffering storm wave…
Are Creep Events Big: Estimating Along Strike Lengths?
Segments of many faults are observed to slip aseismically at the surface. On the central segment of the San Andreas Fault, aseismic slip accumulates largely in creep events: few-m…
Moisture Recycling in the Andes of Colombia
Evapotranspiration from land surface and vegetation plays an important role as a source of precipitation at continental scale in South America, and more so over the Andes cordille…
A snapshot of New Zealand's dynamic deformation field from Envisat InSAR and GNSS observations between 2003 and 2011
Measuring the deformation at the Earth’s surface over a range of spatial and temporal scales is vital for understanding seismic hazard, detecting volcanic unrest and assessing the…
Plankton metabolic balance in the Indian Ocean during spring intermonsoon
In order to examine the spatial variability in plankton metabolic rates and their balance, deck incubation experiments were conducted in the Indian Ocean during spring intermonsoo…
Influence of Anthropogenic Nutrient Inputs on Rates of Coastal Ocean Nitrogen and Carbon Cycling in the Southern Califo…
Coastal nitrogen (N) enrichment is a global environmental problem that can influence acidification, deoxygenation, and subsequent habitat loss in ways that can be synergistic with…
The Growth of the Commercial Sector in Space Science
The commercial sector of space science is thriving. Exciting examples come to mind more easily today than ever before, including commercial spaceflight and launches, ride shares f…
Butterfly distribution of relativistic electrons induced by lower-band whistler chorus
The butterfly distribution is one of the characteristic features of the electron pitch angle distribution in electron radiation belts, and it has the maximum electron flux intensi…
Magma Storage System and Hidden Hotspot Track of the Emeishan Large Igneous Province and its Impact on the Unusual Timi…
Large igneous provinces (LIPs) are often associated with mass extinctions and are thus vital for life evolution on Earth. However, the precise relation between LIPs and their impa…
A Recirculating Eddy Promotes Subsurface Particle Retention in an Antarctic Biological Hotspot
Palmer Deep Canyon is one of the biological hotspots associated with deep bathymetric features along the Western Antarctic Peninsula. The upwelling of nutrient-rich Upper Circumpo…
Magma Storage System and Hidden Hotspot Track of the Emeishan Large Igneous Province and its Impact on the Timing of th…
Large igneous provinces (LIPs) are often associated with mass extinctions and are vital for life evolution on Earth. However, the precise relation between LIPs and their impacts o…
Magma Storage System and Hidden Hotspot Track of the Emeishan Large Igneous Province and its Impact on the Timing of th…
Large igneous provinces (LIPs) are often associated with mass extinctions and are vital for life evolution on Earth. However, the precise relation between LIPs and their impacts o…
Role of subtropical Rossby waves in governing the track of cyclones in the Bay of Bengal
The cyclones during November in the Bay of Bengal follow two distinct tracks. Some cyclones move west-northwestward and make landfall at Odisha, Andhra Pradesh, Tamil Nadu or Sri …
Denudation history of the Eastern Nepalese Himalaya constrained by thermochronological methods
The thermochronological method was applied to metamorphic rocks distributed in eastern Nepal to elucidate the denudation process of the upper-crust of the continental collision zo…
The Duration of Non-flow Periods Influences the Dynamic Responses of Biofilm Metabolic Activities to Flow Rewetting
Global change has led to the increased duration and frequency of droughts and may affect the microbial-mediated biochemical processes of intermittent rivers and ephemeral streams …
Non-Maxwellianity of electron distributions near Earth's magnetopause
Plasmas in Earth’s outer magnetosphere, magnetosheath, and solar wind are essentially collisionless. This means particle distributions are not typically in thermodynamic equilibri…
Semantic Segmentation with Deep Convolutional Neural Networks for Automated Dust Detection in Goes-R Satellite Imagery
Airborne dust, including Dust storms and weaker dust traces, can have deleterious and hazardous effects on human health, agriculture, solar power generation, and aviation. Althoug…
Identification of Repeating Earthquakes: Misconception of Waveform Similarity and a Physics-based Solution
Identification of repeating earthquakes (repeaters) usually depends on waveform similarity expressed as the corresponding cross-correlation coefficient (CC) above a prescribed thr…
Dynamics and mechanical integrity of a fast-ice stabilized ice tongue in Antarctica prior to break-off
The full length of Parker Ice Tongue on the Victoria Land Coast, Antarctica, calved in March 2020. Calving of this magnitude (18 km) is not previously seen for this location. The …
On the Role of Eddy Mixing in the Subtropical Ocean Circulation
Most of the classic wind-driven circulation theories based on the Sverdrup balance have neglected the profound influence of eddy mixing on the large-scale distribution of the pote…
Exploration of data space through trans-dimensional sampling: A case study of 4D seismics
We present a novel methodology for exploring 4D seismic data in the context of monitoring subsurface resources. Data-space exploration is a key activity in scientific research, bu…
A Consideration that the Fireballs Associated with the Perseids Meteor Shower are an Indication of a Previous Low Angle…
It is accepted that the Perseids Meteor Shower each August is related to the comet Swift Tuttle. It is apparent that the outgassing as the comet travels spreads a cloud of dust al…
Inferring the Subsurface Geometry and Strength of Slow-moving Landslides using 3D Velocity Measurements from the NASA/J…
The hazardous impact and erosive potential of slow-moving landslides depends on landslide properties including velocity, size, and frequency of occurrence. However, constraints on…
Constraining the Uplift of the Southeastern Sierra Nevada, CA using Multi-Mineral Detrital Thermochronology from Active…
Most thermochronological studies aimed at constraining exhumation rates rely on bedrock datasets. Often, they involve the analysis of samples collected along an elevation profile …
The Controls on Earthquake Ground Motion in Foreland-Basin Settings: The Effects of Basin and Source Geometry
Rapid urban growth has led to large population densities in foreland basin regions, and therefore a rapid increase in the number of people exposed to hazard from earthquakes in th…
Large soil carbon storage in terrestrial ecosystems of Canada
Terrestrial ecosystems of Canada store a large amount of organic carbon (C) in soils, peats and plant materials, yet little is known about the C stock size and distributions, both…
Laser Ablation Depth Profiling of Helium in Accessory Minerals: Imaging Alpha Ejection Zones and Natural Helium Diffusi…
The Ultraviolet Laser Ablation Microprobe (UVLAMP) method of releasing helium from samples is an excellent, but under-utilized, tool in the diverse toolkit of gas extraction appro…
Resolving the Stream Depletion Model Paradox: Theory of Depletion with Stream Drawdown near a Pumping Well
Mathematical models for stream depletion typically use the constant-head Dirichlet boundary condition or the general Robin boundary condition at the stream. Both approaches fix st…
Glaciers and Nutrients in the Canadian Arctic Archipelago Marine System
The Canadian Arctic Archipelago (CAA) is vulnerable to climate warming, and with over 300 tidewater glaciers, is a hotspot for enhanced glacial retreat and meltwater runoff to the…
Time-Domain Reflectometry Measurements and Modelling of Firn Meltwater Infiltration at DYE-2, Greenland
Meltwater infiltration and refreezing in snow and firn are important processes for Greenland Ice Sheet mass balance, acting to reduce meltwater runoff and mass loss. To advance un…
Microseismicity along Xiaojiang Fault Zone (China) and the Characterization of Interseismic Fault Behavior
The Xiaojiang Fault (XJF) Zone locates in the southeastern of Tibetan Plateau and defines the boundary between the South China and Sichuan-Yunnan blocks. Historical large earthqua…
Supercontinent and Superplate? A short-lived Pangean plate and its role in the supercontinent cycle
The supercontinent cycle explains how landmasses amalgamate into super-plates, which dismember after a ~100 Myr tenure in a quasi-periodic manner controlling Earth’s long-term geo…
Magma production beneath mid-ocean ridges: Using numerical models to evaluate the solidus
Over 95% of volcanism on Earth occurs at mid-ocean ridges (MORs) where tectonic plates diverge. How melt is produced depends on the mineral composition and water content. However,…
Statistical Analysis of Impulsiveness and Rise Phase Duration of Solar Flares in the He II 304 Angstrom Chromospheric L…
We perform statistical analysis of solar flare light curves and ribbon morphology to advance our understanding of flare impulsiveness, an important parameter to describe stellar f…
Hydroacoustic Travel Time Variations as a Proxy for Passive Deep-Ocean Thermometry
We report on the extraction of deep ocean travel time variations from time-lapse cross-correlations between a hydrophone station and a three-component broadband seismometer. The s…
Estimation of future changes in photovoltaic potential in Australia due to climate change
Solar photovoltaic (PV) energy is one of the most preferred and fastest growing emission-free energy sources in Australia. However, the dependency of PV generation on climatologic…
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