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Showing 13551 to 13600 of 22070 works

An Evolutive Linear Kinematic Source Inversion

Accurate kinematic models are fundamental to enhance our knowledge of the seismic cycle as well as to improve surface ground motion prediction. However, the solution of the ill-po…

Monitoring Vineyards with Planet Dove Satellites

Spectral-based vegetation indices (VI) have been shown to be good proxies of grapevine stem water potential (Ψstem), potentially assisting in irrigation-decision making of commerc…

Lithium Clay Deposits of the Zeus Property, Eastern Clayton Valley, Nevada

Clay deposits in playa lake/salar environments are now recognized as a significant deposit type for economic concentrations of lithium. Clayton Valley, Nevada, the location of Nor…

Effect of the Magnetodisc Field on Plasma Injection Signatures at Saturn

Studies of plasma injection signatures at the giant planets commonly interpret these events in terms of a longitudinally localised ‘bundle’ of hot plasma or a more radially-extend…

A lacustrine paleoenvironment recorded at Vera Rubin ridge, Gale crater: Overview of the sedimentology and stratigraphy…

For ~ 500 sols, the Mars Science Laboratory team explored Vera Rubin ridge (VRR), a topographic feature on the northwest slope of Aeolis Mons. Here we review the sedimentary facie…

Deep Future Climate on Earth: effects of tectonics, rotation rate, and insolation

We explore two possible Earth climate scenarios, 200 and 250 million years into the future, using knowledge of the evolution of plate tectonics, solar luminosity, and rotation rat…

Parmap: Analytics Engine Scalable for Climate Model Evaluation on Cloud and High-Performance Computing Platforms

The need to better understand climate change has driven model simulations to greater fidelity with improved spatiotemporal resolution (e.g., < 10 km at sub-hourly cadence). For ex…

Impacts of tiled land cover characterization in the Model for Prediction Across Scales-Atmosphere (MPAS-A)

Parameterization of subgrid-scale variability of land cover characterization (LCC) is an active area of research, and can improve model performance compared to the dominant (i.e.,…

Effects of Bacterial Species on the Biodegradation Sequence of Saturated Hydrocarbon Compounds: Evidence from Biodegrad…

To our knowledge, this is the first study to report the different biodegradation sequences of saturated hydrocarbon compounds by two bacteria— XJ16 and XJ19—using semiquantitative…

pyGeoPressure: an Open-Source Package for Geopressure Prediction

Geopressure (or pore pressure) prediction is of central importance in both the exploration and development of hydrocarbon reservoirs. For pore fluid pressure affects the physical …

Estimating Solid Earth Tidal Consituents from PBO Station Borehole Strainmeters

The aim of this study is two-fold: (1) measure solid Earth diurnal and semi-diurnal tidal constituents using non-parametric signal analysis, and (2) calculate the time delay of th…

Thermal-Compositional Evolution of Europa's Interior and Ocean Since Accretion

Europa’s compositional evolution is not well constrained. Observations only provide approximations of the current interior structure of Europa. However, dynamic models [Hussmann &…

Immersion Freezing of Coal Combustion Ash Particles from the Texas Panhandle

Coal combustion aerosol particles contribute to the concentrations of ice-nucleating particles (INPs) in the atmosphere. Especially, immersion freezing can be considered as one of…

The Response of Peak Discharge and Sedimentation to the Land Use/Land Cover Change Scenarios in the Upper Awash Basin, …

Expansion of unplanned agriculture and urbanization increases the danger of extreme flood and sedimentation. The Upper Awash basin has been under tremendous influence of human act…

Seismic sensors for global seismic monitoring and earthquake research in Armenia

In the field geophysical instruments, various seismic sensors (an accelerometer, a velocimeter) and auxiliary equipment in the form of recorders (loggers) have been designed, whic…

The Earth Data Analytic Services (EDAS) Framework

Faced with unprecedented growth in earth data volume and demand, NASA has developed the Earth Data Analytic Services (EDAS) framework, a high performance big data analytics and ma…

Impact of burn severity on thermokarst initiation and expansion in Arctic tundra ecosystems

Burn severity influences various biophysical and biogeochemical processes, and it is projected to increase in the coming decades across high-latitude ecosystems. However, the impa…

Study of Ducted EM Propagation over the Gulf Stream from Measured Data and Numerical Simulations

Propagation of electromagnetic (EM) waves from radar and communication devices at sea can be significantly affected by the low-altitude atmospheric refractive conditions. Characte…

Diagnosing the Short-term Variability of Atmospheric Tides at the MLT Region from Observations and a High Altitude Mete…

The variability of the middle atmosphere is driven by a variety of atmospheric waves covering various spatial and temporal scales. In particular, the northern winter mesosphere/ l…

Hydroclimatic Variability in Africa’s Transboundary River Basin Using +50 Years of Extended Terrestrial Water Storage

Information concerning the types, patterns, and intensity of hydroclimatic variability is needed in various sectors, including water resources planning and climate change adaptati…

Hot Electron Temperature Layer in the Martian Atmosphere

The MAVEN mission has measured an electron temperature spike at altitudes where the Martian atmosphere becomes optically thick and changes occur in the atmospheric chemistry. The …

A Comprehensive Numerical Analysis of Wave Transmission in Submerged Breakwaters

The main objective of submerged breakwaters is energy dissipation of transmitted wave in leeward. In the present study, the capability of FLOW-3D and MIKE21-BW software for modeli…

Building Skills for and Implementing Course Based Undergraduate Research Experiences (CUREs) across an Environmental St…

Course Based Undergraduate Research Experiences (CUREs) are an effective method of teaching students not only content, but also critical thinking, scientific practice, and other s…

Estimating 2D Neutral Wind Patterns Using Line-of-Sight Data from Multiple Scanning Doppler Imagers

We present a new analysis technique for estimating 2D neutral wind pattern using data from a single Scanning Doppler Imager (SDI) or a combination of SDIs, incoherent scatter rada…

Open-source Data Processing in Stable Isotope Ratio Mass Spectrometry: New Software Packages for Efficient, Transparent…

The key to reproducible data reduction and data processing in scientific research is the ability to faithfully record every step of the process in a reproducible format that is tr…

Rapid automatic clean-up toolkit for large corrupted tidal datasets

Tides are critical to coastal and oceanic processes. While tidal data are available readily, they are often corrupted by various sources of error. An automated, fast MATLAB toolbo…

Developing nitrogen budgets using an Integrated Biophysical Model to investigate current and future phytoplankton dynam…

Louisiana is undergoing rapid change from natural and anthropogenic forces, such as sea level rise, subsidence, and eutrophication. Sediment diversions on the lower Mississippi Ri…

A budget for the size of convective self-aggregation

There is no consensus on the physical mechanisms controlling the scale at which convective activity organizes near the Equator, where the Coriolis parameter is small. High resolut…

Introducing Satellite Data Based Biosphere Model BEAMS to Improve Regional Transport Model for Estimating CO2 Emission …

GOSAT (Greenhouse gases Observing SATellite) observations ameliorate inversion analysis of greenhouse gas emissions. Meso-scale atmospheric transport model (AIST-MM, National Inst…

A Satellite Observations and Numerical Modelling Based Integrated Flash Flood Forecasting System for North-East Region …

North-east region of Bangladesh is comprised of hilly transboundary rivers in the upstream and complex river network along with floodplain in the downstream. In this study, a sate…

Seasonal to Interannual Storm Controls on Coastal Morphology at NASA-Kennedy Space Center

Large storms are considered to be influential drivers of morphologic change on open sandy coasts. Whereas storm-driven morphologic changes and the recovery processes that typicall…

Study of Fractal-scaling Porosity Using High-resolution X-ray Tomography in Volcanic Rocks: Preliminary Results

Characterization of rocks from geothermal reservoirs is crucial to better understand their behavior. Los Humeros geothermal field contains one of the most important reservoirs in …

Immersion freezing efficiencies of ambient particles collected from five different regions across latitudes

This poster presents immersion freezing efficiencies of ambient particles collected from different latitudes between 79 °N and 75 °S. We collected particles using aerosol impactor…

How Much Does Stream-Groundwater Exchange Influence Whole-Stream Metabolism in a Small Mountain Stream?

To estimate whole-stream metabolism, the open-channel oxygen method has traditionally provided underlying assumptions for modeled estimates of gross primary productivity (GPP) and…

Uncertainty in Estimates of Net Seasonal Snow Accumulation on Glacier from In Situ Measurements

Accurately estimating the net seasonal snow accumulation (or “winter balance”) on glaciers is central to assessing glacier health and predicting glacier runoff. However, measuring…

Using NASA Earth Observations to Monitor Snow Cover Extent for Water Resource Management on the Navajo Nation

The southwestern U.S. has been experiencing prolonged drought conditions contributing to declines in snowpack and surface water supply. On the Navajo Nation (NN), the largest U.S.…

Laboratory Study for Gaseous Mercury Uptake by Atmospheric Water

Mercury is a notorious pollutant causing severe nerve diseases. This metal has a semi-volatile nature under the STP condition, therefore, it is emitted to atmosphere as gaseous el…

Changes in Flood Dynamics in the Lower Mekong River Basin Due to Upstream Flow Regulation

The Mekong river is one of the most complex river systems in the world that is shared by six nations in Southeast Asia. The river still remains relatively undammed (most existing …

Gaia's Exhalation from the 2019 Searles Valley Earthquake

The earth’s crust is a leaky geofluid system where surface trace gas emissions relate to open migration pathways and the presence of subsurface source(s). Seismic activity can ope…

The Fourth U.S. National Climate Assessment: Hawai‘i and the Pacific Islands region

Chapter 27 of the 4th U.S. National Climate Assessment, Volume 2, assesses climate impacts, future risks, and adaptation in Hawai‘i and the U.S.-Affiliated Pacific Islands. The au…

Shear Wave Splitting and Mantle Flow in the Vicinity of the North American-Caribbean Plate Boundary in Central America

Azimuthal anisotropy quantified by teleseismic SKS, SKKS, PKS (“XKS”) and Local S wave splitting parameters is used to investigate mantle deformation and flow beneath the boundary…

THE INFLUENCE OF THE RED SEA RIFTS AND THE GULF OF ADEN RIFTS ON THE LATERAL PROPAGATIONS OF FAULTS IN THE DOBI GRABEN …

The Dobi graben is a NW-trending, Quaternary continental rift found within the East-Central Block (ECB) of the Afar Depression (AD) in northeastern Ethiopia. Extension occurs on s…

Microseismic Remote Sensing of Sea Ice: Exploratory Study on the Potential Uses of the EarthScope Transportable Array i…

Over recent years, remote sensing of sea ice has advanced at a rapid pace. However, there are inherent limitations in the ability of existing space and airborne sensors to observe…

Energy harvesting from the flow induced motion of flexible mangrove root-type models with different flexibilities

Red mangroves, Rhizophora mangle, in coastal areas have proven to be resilient for many decades. Mangroves accumulate mud, peat and plant matter through aerial roots (Pneumatophor…

Hydrological Modelling the Middle Magdalena Valley (Colombia)

Hydrological distributed modeling is a key point for a comprehensive assessment of the feedback between the dynamics of the hydrological cycle, climate conditions, and land use. S…

Benthic Foraminiferal baselines for the southern Great Barrier Reef: a foundation for future ecological research

Effective environmental management and monitoring has become increasingly important as anthropogenic processes increasingly impact natural ecosystems. One locality that is under d…

Electron-Electron Collision Effects on ISR Temperature Measurements

Incoherent scatter radars (ISR) estimate the electron and ion temperatures in the ionosphere by fitting measured spectra of ion-acoustic waves to forward models. For radars lookin…

O2 Activity in Comet 67P/Churyumov-Gerasimenko from Observations of Electron Dissociative Excitation by the Rosetta-Ali…

We have shown that far-ultraviolet emissions of atomic hydrogen, oxygen, and carbon in the near-nucleus coma of comet 67P/Churyumov-Gerasimenko result primarily from electron impa…

Groundwater Investigation Using Schlumberger Vertical Electrical Sounding (VES) in Baturraden Geothermal Working Area (…

Goundwater investigations are increasingly becoming important for Indonesia. It is natural resources for sustainable development of a region. In this study, PT Sejahtera Alam Ener…

Turbulence controls size distribution of aggregates: in-situ observations by a microstructure profiler

Marine aggregates are ubiquitous particles formed from the accretion of smaller biogenic and non-biogenic components. Visible aggregates, known as marine snow, are typically in th…

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