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Showing 6501 to 6550 of 59105 works
Deep crustal contact between the Pamir and Tarim Basin deduced from receiver functions
The deep crustal deformation in the east Pamir in response to Cenozoic collision with the Tien Shan and Tarim Basin is so far poorly constrained. We present new insights into the …
Performance Analysis of Adaptive Beamforming in a MIMO-millimeter Wave 5G Heterogeneous Wireless Network using Machine …
Beamforming determines the quality of received signal by an antenna array using Signal-to-Noise-Interference Ratio (SINR) in cellular base stations. This paper will help in the in…
Pacific Risk Tool for Resilience
Juliana Ungaro 1, Herve Damlamian 2, Sachindra Singh 2, Shaun Williams 3, Ryan Paulik 1, Rebecca Welsh 1, Litea Biukoto 2, Doug Ramsay 4 1. NIWA Taihoro Nukurangi, Private Bag 149…
Counteracting Systemic Bias in the Lab, Field, and Classroom
Grappling with systemic discrimination and bias in geosciences can be overwhelming to the point that one may feel powerless to fix them. Despite the sweeping nature of this challe…
Magmatism, migrating topography, and the transition from Sevier shortening to Basin and Range extension, western USA
The paleogeographic evolution of the western USA Great Basin from the Late Cretaceous to the Cenozoic is critical to understanding how the Cordillera at this latitude transitioned…
Mantle plume migration ?
The stagnation and dehydration of the Pacific Plate slab in the mantle transition zone are widely accepted to have resulted in Mesozoic and Cenozoic volcanic activities and the fo…
Impact of lockdowns and winter temperatures on natural gas consumption in Europe
As the COVID-19 virus spread over the world, governments restricted mobility to slow transmission. Public health measures had different intensities across European countries but a…
Contribution of Non-Water Ices to Salinity and Electrical Conductivity in Ocean Worlds
Modeling of the electrical conductivity (EC) of icy moon oceans has previously assumed that chloride, sulfate, and other ions released from rock leaching are the main solutes and …
Linking Intra-Plate Volcanism to Lithospheric Structure and Asthenospheric Flow
Several of Earth’s intra-plate volcanic provinces are hard to reconcile with the mantle plume hypothesis. Instead, they exhibit characteristics that are more compatible with shall…
Analyzing Uncertainty in Probable Maximum Precipitation Estimation with a Large Ensemble Climate Simulation Data
Probable maximum precipitation (PMP) is one of the most important key indices in hydrological design, and it should be estimated without the risk of overestimation or underestimat…
Excess pCO2 in Surface Seawater of the Arabian Gulf
Dissolved inorganic carbon (DIC) and total alkalinity (TA) were sampled in December, 2018 and May, 2019 in the Exclusive Economic Zone (EEZ) of Qatar in the Arabian Gulf. pCO 2 ca…
A New Modeling Approach to Hindcast Marine Turbidity Currents
The bulk of the sediment found on the abyssal plain is transported from the shelf to the deep ocean by marine turbidity currents. They consecutively erode, transfer and deposit la…
Improving the parameterization of dust emission threshold in the Community Earth System Model (CESM)
A key challenge in accurate simulations of desert dust emission is the parameterization of the threshold wind speed above which dust emission occurs. However, the existing paramet…
Constraints on the Slip Distribution of the 1938 MW 8.3 Alaska Peninsula Earthquake from Tsunami Modeling
We simulated tsunami propagation for several scenario slip distributions for the 1938 M W 8.3 earthquake along the Alaska Peninsula, and compared these to the observed records at …
Nearest-Neighbour Distance Analysis of Induced and Natural Seismicity within the Western Canada Sedimentary Basin
Over the past decade, parts of western Canada have seen a rise in clustered seismic activity coinciding with the growing use of a hydrocarbon reservoir stimulation technique known…
How the Three Gorges Project (TGP) affects local precipitation
As the largest hydroelectric projects worldwide, the Three Gorges Dam (TGD) affects local precipitation because of the changes of hydrological cycle caused by the impounding and d…
Observations of Small Large-Amplitude Magnetic Structures (SLAMS) at Mars by MAVEN
According to the different orientations of the interplanetary magnetic field (IMF), the planetary shock can be either quasi-parallel or quasi-perpendicular. Under quasi-parallel c…
Shear wave velocity structure beneath Northeast China from joint inversion of receiver functions and Rayleigh wave grou…
A high-resolution 3-D crustal and upper-mantle shear-wave velocity model of Northeast China is established by joint inversion of receiver functions and Rayleigh wave group velocit…
The importance of inter-flood periods on alluvial fan morphology, hazards and reworking
On steep alluvial fans, debris floods happen rarely but are often catastrophic. Debris floods and their associated hazards are well documented, but the time between flood events h…
Predicting the Photosynthetic Capacity and Leaf Nitrogen of Woody Bioenergy Crops from Hyperspectral Reflectance Models
Generating renewable bioenergy crops requires varietals that are suited to grow under varying environmental conditions necessitating the development and testing of a wide range of…
Pilot Desktop and Immersive Virtual Reality Field Trip Study of Coastal Maine Indicates Equivalent Student Learning Out…
There is an increased interest in geoscience virtual field trips (VFTs) coinciding with an expansion of online learning and growing concerns about the lack of diversity, inclusion…
Probabilistic estimation of glacier surface elevation changes from DEM differentiation: a Bayesian method for outlier f…
Various interdisciplinary studies have shown substantial discrepancies between modeled and remotely sensed glacier surface elevation change. It is therefore crucial to better unde…
An EUV Model of Solar Eclipses using SDO-AIA Images and the Impacts on Ionosphere-Thermosphere System
Solar eclipses cause profound effects on ionosphere-thermosphere dynamics due to the abatement of solar Extreme Ultra Violet (EUV) irradiance. The reduced EUV flux cause relative …
Sediment Transport and Depositional History from Nested Alluvial Fans to Flood Plains Using Single-grain Luminescence
Critical research questions such as how geomorphic and sedimentary systems modulate sediment movements and what are the timing, controls, and duration of significant sediment tran…
The uncertainty of the calculative value of the volumetric flow rate in open channels
The well-known Manning formula is usually used for the calculation of the volumetric flow rate (discharge) in a river or open canal. The discharge depends on the geometry of the c…
The feedback of solid friction on glacier sliding does not substantially modify the form of the friction law
Current theories to describe friction of glaciers over hard beds are formulated on the basis that ice is free of debris and slides perfectly over the glacier bed. However, it is c…
The Impacts of Wildfires on Ozone Production and Boundary Layer Dynamics in California's Central Valley
We investigate the role of wildfire smoke on ozone photochemical production (P(O 3 )) and atmospheric boundary layer (ABL) dynamics in California’s Central Valley during June-Sept…
Is Computational Oceanography Coming of Age?
Computational Oceanography is the study of ocean phenomena by numerical simulation, especially dynamical and physical phenomena. Progress in information technology has driven expo…
Limitations in one-dimensional (an)elastic Earth models for explaining GPS-observed M$_2$ Ocean Tide Loading displaceme…
GPS observations of ocean tide loading displacements can help infer the regional anelastic properties of the asthenosphere. We estimate M2 ocean tide loading displacements at 170 …
Benthic Organic Matter Transformation Drives pH and Carbonate Chemistry in Arctic Marine Sediments
The carbonate chemistry of Arctic Ocean seafloor and its vulnerability to ocean acidification remains poorly explored. This limits our ability to quantify how biogeochemical proce…
Public Libraries: Hubs for Community Science
Libraries are local community centers and hubs for learning, with increasing numbers of public libraries responding to the need to increase science literacy and support 21st centu…
Sensitivity of Convection Permitting Simulations to Lateral Boundary Conditions in Idealised Experiments
Limited-area convection-permitting climate models (CPMs) with horizontal grid-spacing less than $4$\,km are being used more and more frequently. CPMs represent small-scale feature…
Modeling the hydrologic influence of subsurface tile drainage using the National Water Model
Subsurface tile drainage (TD) is a dominant agriculture water management practice in the United States (US) to enhance crop production in poorly-drained soils. Assessments of fiel…
Plant Structure and Carbon Storage Assessment Utilizing Drone-Borne Lidar and Deep Learning Technologies in a Danish Ag…
The increase of vegetation greenness in the Northern latitudes suggests a rise in the fixation of CO2 by photosynthesis, but the observed upward trends in respiration could compen…
Surface salinity under transitioning ice cover in the Canada Basin: Climate model biases linked to vertical 2 distribut…
The Canada Basin has exhibited a significant trend toward a fresher surface layer and thus a more stratified upper ocean over the past three decades. Here, we explore the extent t…
An Incomprehensible Cosmic Impact at the Mid Pleistocene Transition; Searching for the Missing Crater Using Australasia…
Australasian (AA) tektites are distal ejecta of a cosmic impact into terrestrial sediments 788.1 ± 2.8 ka. Protracted explorations within the strewn field, as preferred by consens…
Combined Modeled and Explored Moulin Shape Informs Subglacial Pressure Dynamics in Western Greenland
Ice motion in land terminating regions of the Greenland Ice Sheet is controlled in part by meltwater input into moulins. Moulins, large near-vertical shafts that deliver supraglac…
Modeling and Propagation Characterization of THz Wireless Links in Computer Desktop Environment
In this paper, THz channel propagation characterization and modeling for a desktop environment is presented. Path loss and PDPs measured on the motherboard in both free-space and …
Seasonal Prediction of Bottom Temperature on the Northeast U.S. Continental Shelf
The Northeast U.S. shelf (NES) is an oceanographically dynamic marine ecosystem and supports some of the most valuable demersal fisheries in the world. A reliable prediction of NE…
DICE and the carbon budget for ambitious climate targets
The DICE model is one of the most influential Integrated Assessment Models available. Its founder Professor William Nordhaus was recently awarded Sveriges Riksbank Prize in Econom…
Cloud-Radiation Interactions and their Contributions to Convective Self-Aggregation
This study investigates the direct radiative-convective processes that drive and maintain aggregation within convection permitting elongated channel (and smaller square) simulatio…
From fluid flow to coupled processes in fractured rock: recent advances and new frontiers
Quantitative prediction of natural and induced phenomena in fractured rock is one of the great challenges in the Earth and Energy Sciences with far-reaching economic and environme…
Rapid, concurrent formation of organic sulfur and iron sulfides during experimental sulfurization of sinking marine par…
Organic matter (OM) sulfurization can enhance the preservation and sequestration of carbon in anoxic sediments, and it has been observed in sinking marine particles from marine O2…
Assessing Crack-Induced Compliance in Low Porosity Rocks Damaged by Thermo-Hydro-Chemo-Mechanical Processes
Fracture geometry, density, and distribution control fluid and thermal transport in low porosity rocks, as well as their seismic attributes. The creation of cracks throughout the …
Statistical Characterization of GITM Thermospheric Horizontal Winds in Comparison to GOCE Estimations
Characterization of the thermospheric horizontal wind is an important challenge in atmospheric modeling, due to its vital role in the transport of densities and energy, associatio…
Non-equilibrium state change during the seismic process of a megathrust earthquake
The entropy production rate (EPR), which is a property of thermodynamically non-equilibrium systems, occasionally decreases sharply in the seismic process of the Great East Japan …
Seasonal comparisons of GEOS-Chem-TOMAS (GCT) simulations with AERONET-inversion retrievals over sites in the North Ame…
GEOS-Chem TOMAS (GCT) simulations of AERONET-inversion products during 2015 were compared with AERONET-inversion products from the multi-year climatology of Aboel-Fetouh et al. (2…
Observational Constraints on Southern Ocean Cloud-phase Feedback
Shortwave radiative feedbacks from Southern Ocean clouds are a major source of uncertainty in climate projections. Much of this uncertainty arises from changes in cloud scattering…
Scale sensitivity of the Gill circulation, Part I: equatorial case
We investigate the steady dynamical response of the atmosphere on the equatorial β-plane to a steady, localized, mid-tropospheric heating source at the equator. Expanding Gill (19…
Contrasting impacts of forest on cloud cover based on satellite observations
Forests play a pivotal role in regulating climate and sustaining the hydrological cycle. The biophysical impacts of forest on clouds, however, remain unclear due to the lack of di…
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