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Showing 7201 to 7250 of 59105 works
Automatic Spread-F Detection Using Deep Learning
Spread-F (SF) is a feature that can be visually observed on ionograms when the ionosonde signals are significantly impacted by plasma irregularities in the ionosphere. Depending o…
Lightning Initiation from Fast Negative Breakdown is Led by Positive Polarity Dominated Streamers
Lightning is a magnificent natural experiment of dielectric breakdown on a vast scale, providing us rare opportunities to explore this powerful and dangerous phenomenon hidden dee…
The Need to Account for Water Resources Management in Climate Change Impact and Adaptation Studies
In 2020, renewables became the second-largest source of electricity generation in the United States after natural gas (US EIA, 2021). In recent years, wind energy generation has o…
The Potential of Index Based Flood Insurance in South Asia: A case study on de-risking disasters in Bihar and Bangladesh
The poor across the world is very vulnerable to floods and drought disasters and have a detrimental effect on the lives and livelihoods of the poor. Weather based index insurance …
Learning from Observations: The Case for a New Generation of Land Surface Models
The hydrology community is engaged in an intense debate regarding the merits of machine learning (ML) models over traditional models. These traditional models include both concept…
Tillage Mediates Effects of WinterCover Crop on Soil WaterRelationships
Winter cover crops (CC) use water, which can have negative, neutral, or positive effects on soil water storage and supply for the subsequent summer crop. There is a lack of inform…
Influence of Boulders on Channel Width and Slope: Field Data and Theory
Large boulders with a diameter of up to several tens of meters are globally observed in mountainous bedrock channel environments. Recent theories suggest that high concentrations …
Uncertain response of ocean biological carbon export in a changing world
The export flux of organic carbon from the upper ocean is the starting point of the transfer and long term storage of photosynthetically-fixed carbon in the deep ocean. This “biol…
Assessing and correcting estimated fCO2 from carbonate chemistry models of the northeastern US
Understanding changes in the ocean carbonate system is central to understanding ocean and coastal acidification and the effects these phenomena will have in the future. To create …
Constraints on the Mantle Wavespeed and Discontinuity Structure below the Turkana Depression, East Africa: Insights int…
The subdued topography of the Turkana Depression separates the elevated Ethiopian and Kenyan Plateaus in East Africa. Mechanisms to explain its topography are debated because cons…
As above, so below? Quantification of naturally occurring maize diseases using ground-based visual assessments and UAS-…
Ground-based visual assessments of co-occurring foliar diseases are time-consuming, laborious, and subjective due to the spatiotemporal overlapping of different lesion types and p…
A 20-year study of melt processes over Larsen C Ice Shelf using a high-resolution regional atmospheric model: Part 2, D…
Quantifying the relative importance of the atmospheric drivers of surface melting on the Larsen C ice shelf is critical in the context of recent and future climate change. Here, w…
Influence of Dust Storm Adsorptive Properties on the Atmospheric Water Content of Mars
Martian global dust storms can raise large amounts of dust into the atmosphere. This dust has the ability to carry adsorbed water with it into the atmosphere. Once it arrives in t…
Fracture sealing and its impact on the percolation of subsurface fracture networks
Fractures play an essential role in formations with low permeability; however, fracture sealing significantly reduces the permeability of fractures. The mechanism of how fracture …
Geospatial analysis of cancer incidence and its association to estimated pesticide usage in the U.S. west
This study’s objective was to evaluate the potential geospatial relationship between agricultural pesticide use and cancer incidences by using the concept of consolidated environm…
Enhanced NAPL Removal and Mixing with Engineered Chaotic Advection
Aquifer remediation with in situ soil washing techniques and enhanced oil removal typically involve the injection of liquid solutions into the geological formation to displace and…
Dilution of boundary layer cloud condensation nucleus concentrations by free tropospheric entrainment during marine col…
Recent aircraft measurements over the northwest Atlantic enable an investigation of how entrainment from the free troposphere (FT) impacts cloud condensation nuclei (CCN) in the m…
Pumice Raft Detection Using Machine-Learning on Multispectral Satellite Imagery
Most of Earth’s volcanic eruptions occur underwater, and these submarine eruptions can significantly impact large-scale earth systems. In this study, we develop a new semi-automat…
Reaction-diffusion waves in hydro-mechanically coupled porous solids
Here, we extend the Fisher-Kolmogorov-Petrovsky-Piskunov equation to capture the interplay of multiscale and multiphysics coupled processes. We use a minimum of two coupled reacti…
Elastic Contrast, Rupture Directivity, and Damage Asymmetry in an Anisotropic Bimaterial Strike-Slip Fault at Middle Cr…
Mature faults with large cumulative slip often separate rocks with dissimilar elastic properties and show asymmetric damage distribution. Elastic contrast across such bimaterial f…
Satellite Observations of AOD in 4 Northern Hemisphere Source Regions during the COVID-19 Pandemic
Anticipated future reductions in aerosol emissions are expected to accelerate warming and substantially change precipitation characteristics. It is therefore vital to identify exi…
Multi-Mission Flood Mapper: A Synthetic Aperture Radar (SAR) Data Based Tool for Rapid Disaster Response
Floods are convincingly the most frequent and widespread natural hazard across the world. With an ample amount of literature forecasting increase in its frequency and magnitude fu…
Vertical aerosol distribution and mesospheric clouds from ExoMars UVIS
The vertical opacity structure of the martian atmosphere is important for understanding the distribution of ice (water and carbon dioxide) and dust. We present a new dataset of ex…
Coordinated observations of the effect of consecutive HSS pulses on relativistic electron enhancement
During the second half of 2019, a series of recurring, moderate geomagnetic storms (Dst ≈ - 70 nT) emerged after a sequence of high-speed solar wind streams (Vsw ≥ 600 km/s) impac…
Predicting West Nile Virus Mosquito Positivity Rates and Abundance: A Comparative Evaluation of Machine Learning Method…
Mosquitoes are major vectors of disease and thus a key public health concern. Some cities have programs to track mosquito abundance and vector competence, but such fieldwork is ex…
Association of relativistic electron enhancements with VLF/ULF wave activity and seed electrons
Local acceleration driven by whistler mode chorus waves is fundamentally important for the acceleration of seed electrons in the outer radiation belt to relativistic energies. Thi…
Ocean Sciences Perspectives on Integrated, Coordinated, Open, Networked (ICON) Science
This article is composed of three independent commentaries of how Integrated, Coordinated, Open, and Networked (ICON), as well as Findable, Accessible, Interoperable, and Reusable…
Automatic Segmentation of Sinkholes Using a Convolutional Neural Network
Sinkholes are the most abundant surface features in karst areas worldwide. Understanding sinkhole occurrences and characteristics is critical for studying karst aquifers and mitig…
A Systematic Look at the Temperature Contribution to the Dayside Magnetopause Current
Magnetopause diamagnetic currents arise from density and temperature driven pressure gradients across the boundary layer. While theoretically recognized, the temperature contribut…
What triggers caldera ring-fault subsidence at Ambrym volcano? Insights from the 2015 dike intrusion and eruption
Surface deformation accompanying dike intrusions is dominated by uplift and horizontal motion directly related to the intrusions. In some cases, it includes subsidence due to asso…
Synergistic Data Source Approach to Studying Keystone Marine Predators
The synergistic use of large datasets from cabled array sensors and remote sensing satellites is vastly under used for studying marine mammals. An important element of assessing l…
Pressure-driven conductivity of lizardite-implication to the high conductive layers in craton lithosphere
The electrical transport behavior of lizardite was investigated by in-situ impedance measurements up to 22.6 GPa in a diamond anvil cell with comparation to its dehydrated counter…
Subsurface Mixing Dynamics across the Salt-freshwater Interface
Mixing along the salt-freshwater interface is critical for geochemical reactions, transport and transformation of nutrients and contaminants in coastal ecosystems. However, the me…
Unraveling multiscale relationship between Germany streamflow and global SST using climate networks
Exploration of SST-Streamflow connection unravels the large scale climate influences that have a potential role in modulating local hydrological components. Most studies exploring…
Probing the southern African lithosphere with magnetotellurics, Part I, model construction
The Southern African Magnetotelluric Experiment (SAMTEX) involved the collection of data at over 700 sites in Archean to Proterozoic southern Africa, spanning features including t…
Improving atmospheric angular momentum forecasts by machine learning
Earth angular momentum forecasts are naturally accompanied by forecast errors that typically grow with increasing forecast length. In contrast to this behavior, we have detected l…
The isotopic composition of rainfall on a subtropical mountainous island
Tropical islands are simultaneously some of the most biodiverse and vulnerable places on Earth. Water resources help maintain the delicate balance on which the ecosystems and the …
Ammonium sensitivity of biological nitrogen fixation in anaerobic diazotrophs and coastal salt marsh sediments
New bioavailable nitrogen (N) from biological nitrogen fixation (BNF) is critical for the N budget and productivity of marine ecosystems. Nitrogen-fixing organisms typically inact…
The Association between Covid-19 and heavy metal pollution in Iraqi cities from hierarchical prediction
An assessment was carried out of the relationship between the Corona Virus (covid-19) and the spread across Iraq of various heavy metal contaminations. At the onset, all the confi…
The new Radiosounding HARMonization (RHARM) dataset of homogenized radiosounding temperature, humidity and wind profile…
The RHARM (Radiosounding HARMonization) algorithm is the first to provide homogenized radiosonde-based records of temperature, relative humidity and wind profiles since 1978, alon…
Comparison of travel-time and geostatistical inversion approaches for hydraulic tomography: A synthetic modeling study
Hydraulic tomography (HT) has been proven to be an effective approach in mapping the heterogeneity of hydraulic parameters. The travel-time based inversion (TTI) and geostatistica…
Which Verification Metrics Are Appropriate for Rare-Event Classification Problems?
Strong solar flares are indeed rare events, which make the flare classification task a rare-event problem. Solar energetic particle events are even rarer space weather events as o…
Investigating the Relationship between Metabolic Rate and Extinction Probability for Arthropoda, Brachiopoda, Echinoder…
From extracting nutrients to releasing energy, biological metabolism plays an integral role in determining evolutionary patterns of organisms through geologic time. A previous stu…
Event-based rainfall-runoff modeling for a data-scarce semi-urban catchment using PC-SWMM: A case study for Vizianagara…
The rainfall-runoff model is essential to derive a relationship between Rainfall and Runoff, in which the hydrological response of the catchment can be derived. A real case study …
Effects of circulation on tropical cloud feedbacks in high-resolution simulations
Uncertainty in the response of clouds to global warming remains a significant barrier to reducing uncertainty in climate sensitivity. A key question is the extent to which the dyn…
Trends in the representation of women among US geoscience faculty from 1999-2020: the long road towards gender parity
Inequalities persist in the geosciences. White women and people of color remain under-represented at all levels of academic faculty, including positions of power such as departmen…
Deep Learning Based Cloud Cover Parameterization for ICON
A promising approach to improve cloud parameterizations within climate models and thus climate projections is to use deep learning in combination with training data from storm-res…
MultiSector Dynamics: Advancing the Science of Complex Adaptive Human-Earth Systems
The field of MultiSector Dynamics (MSD) explores the dynamics and co-evolutionary pathways of human and Earth systems with a focus on critical goods, services, and amenities deliv…
Scaling Laws of Fracture Network Properties in Crystalline Rock: a Powerful Approach to the Characterization of Unconve…
The multiscale analysis of fracture patterns helps to define the geometric scaling laws and the genetic relationships correlating outcrop- and regional-scale structures in a fract…
Ambient Noise Tomography for a High-resolution 3D S-Wave Velocity Model of the Kinki Region, Southwestern Japan, using …
Research interest in the Kinki region, southwestern Japan, has been aroused by the frequent occurrence of microearthquake activity that do not always coincide with documented acti…
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