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Showing 12251 to 12300 of 22070 works
Trace element geothermometry and geospeedometry for cumulate rocks: Quantitative constraints on thermal and magmatic pr…
Cumulate rocks record the magmatic and cooling processes during formation of Earth’s igneous crust. Extracting the information of these two processes from mineral records, however…
Breaking of internal Kelvin waves shoaling on a slope
In stratified flow, breaking of internal waves over slopes induces resuspension of bottom sediments and transport of mass. When internal waves shoal and break, flow dynamics and m…
Evidence of subduction zone segmentation: Finite-difference tomography and earthquake relocation along the Java margin
The Java margin is part of the 5600 km long Sunda Arc subduction zone that extends from Sumatra to the Lesser Sunda Islands and is dominated by earthquakes with magnitude less tha…
GRACE Follow-On accelerometer data recovery
In Gravity Recovery and Climate Experiment (GRACE) Follow-on (GRACE-FO) mission, similar to its predecessor GRACE, the twin satellites are equipped with three-axis accelerometers,…
Wind erosion on Mars exposes ideal targets for sample return
The Mars 2020 rover will land in Jezero crater, characterize the local geology, and collect samples to be sent back to Earth. Ionizing radiation at the martian surface degrades th…
Using excess 3He to estimate Southern Ocean upwelling timescales
Using a recently compiled global marine dataset of dissolved helium isotopes and helium and neon concentrations, we make an estimate of the inventory of hydrothermal He in the Sou…
Filling the Evidence Gap: Physical and Mathematical Modelling of Leaky Barriers as Flood Risk Reduction Measures
In recent years there has been growing interest in Nature-Based Solutions (NBS) as a way of reducing flood risk. The premise is that large numbers of small-scale features distribu…
Quality and reliability of the OpenFOAM software for the simulation of atmospheric boundary layer flow
Large-eddy simulations of atmospheric boundary layer flows have historically relied on the open-channel flow setup, using mixed pseudospectral and finite differences methods. Sing…
Antidisciplinary: Tackling the technical and social challenges to data science-driven discovery
Data science refers to the set of tools, technologies, and teams that alter the paradigm by which data are collected, managed and analyzed. Data science is, therefore, decidedly b…
Monitoring Stress-Induced Seismic Velocity Changes At SAFOD Using Crosswell Continuous Active-Source Seismic Monitoring…
Monitoring of in-situ, stress-induced, seismic velocity change provides an increasingly important contribution to the study of the earthquake nucleation process. Continuous Active…
Learning the low frequency earthquake daily intensity on the central San Andreas Fault
Low frequency earthquakes (LFEs) originating below the central San Andreas Fault are associated with slow-slip within the more ductile portion of the crust beneath the seismogenic…
Chameleonic noise in GPS position time series
It has been standard practice for about two decades to compute GPS-based station velocity uncertainties using the apparent noise statistics of the non-linear position residuals ra…
Two Years of Sap Flow Data for Evapotranspiration Characterization in Riparian Vegetation
To close the water use budget in irrigated agricultural fields in flood plains with substantial riparian corridors, it is necessary to understand groundwater usage by dominant phr…
A Refined ~4.5 Ma Paleomagnetic Pole From Basaltic Lava Flow Sequences on Kauai, Hawaii
Laboratory reanalysis of paleomagnetic samples from two sets of superposed ~ 4.5 m.y. old lava flows (N=64) collected on Kauai (Hawaii) in the 1960s, when combined with more recen…
Full-field modeling of heat transfer in asteroid regolith: Radiative thermal conductivity of polydisperse particulates
Characterizing the surface material of an asteroid is important for understanding its geology and for informing mission decisions, such as the selection of a sample site. Diurnal …
From Binary Mixing to Magma Chamber Simulator - Geochemical Modeling of Assimilation in Magmatic Systems
Magmas readily react with their surroundings, which may be other magmas or solid rocks. Such reactions are important in the chemical and physical evolution of magmatic systems and…
Crop-soil organic phosphorus cycling -- a key knowledge gap for sustainable food and water resources
Phosphorus is a critical nutrient in sustaining food production. In agricultural systems, application of P fertilizers has significantly increased since the green revolution to be…
How does the air-sea coupling frequency affect convection during the MJO passage?
The importance of air-sea coupling in the simulation and prediction of the Madden-Julian Oscillation (MJO) has been well established. However, it remains unclear how air-sea coupl…
Light Limited Photosynthesis under Energy-Saving Film Decreases Eggplant Yield
Glasshouse films with adjustable light transmittance have the potential to reduce the high energy cost for greenhouse horticulture operations. Whether these films compromise the q…
Stress chatter on a fracture network reactivated by hydraulic fracturing
Source processes of injection induced earthquakes involve complex fluid-rock interaction often elusive to regional seismic monitoring. Here we combine observations from a local se…
A pioneer and preliminary study on sub-daily rainfall data in Brazil: what can we learn from this new high temporal res…
For many years, rainfall has been measured in Brazil on a daily basis only; hence it is unusual to find studies considering a better temporal resolution for the whole country. How…
Modelling integrated Carbon-Nitrogen-Phosphorus cycling in natural and agricultural systems -- the sustainability of lo…
The cycling of carbon within the earth system is intrinsically linked with major nutrients, notably nitrogen and phosphorus, due to the tendency of these elements to limit the pro…
Simulating Observations of Southern Ocean Clouds and Implications for Climate
Southern Ocean (SO) clouds are critical for climate prediction. Yet, previous global climate models failed to accurately represent cloud phase distributions in this observation-sp…
Fault controls spatial variation of fracture density and rock mass strength within the Yarlung Tsangpo Fault damage zon…
The extent of the fault damage zone remains an outstanding challenge confounding attempts to assess rock mass physical and mechanical properties, the effects on landscape evolutio…
The influence of magnetic field topology and orientation on the 1 distribution of thermal electrons in the Martian magn…
Thermal (<1 eV) electron density measurements, derived from the Mars Atmosphere and Volatile Evolution’s (MAVEN) Langmuir Probe and Waves (LPW) instrument, are analyzed to produce…
Consistent large-scale response of hourly extreme precipitation to temperature variation
Hourly precipitation extremes can intensify with temperature at higher rates than expected from thermodynamic increases explained by the Clausius-Clapeyron (CC) relationship (~6.5…
Sectional distribution patterns of Cd, Ni, Zn, and Cu in the North Pacific Ocean: Systematic importance of scavenging
The North Pacific Ocean is the largest basin and is located at the end point of the thermohaline circulation of deep water. Few concurrent data of Cd, Ni, Zn, and Cu in seawater h…
How Robust Are Our Assumptions in Using Crystal-Hosted Melt Embayments to Estimate Magma Ascent Rate?
The timescale over which magma rises to the surface during a volcanic eruption is a critical parameter that controls eruption style but is challenging to determine. Melt embayment…
Geomorphologic and Stratigraphic Evidence of Ongoing Transpressional Deformation Across Lake Azuei (Haiti)
he boundary between the North American and Caribbean plates cuts EW across the island of Hispaniola. Relative motion on this part of the plate boundary is transpressional and tect…
Is the Simultaneous Onset of the Florida, East Australia, and Indian Ocean Currents Related to Himalayan tectonics?
Carbonate drift deposits in the Santaren Channel, on the Marion Plateau and in the Inner Sea of the Maldives were cored and dated by ODP and IODP expeditions. The ages based on bi…
Localization of the source of quasiperiodic VLF emissions in the magnetosphere by using simultaneous ground and space o…
We study quasi-periodic VLF emissions observed simultaneously by Van Allen Probes spacecraft and Kannuslehto and Lovozero ground-based stations on 25 December 2015. Both Van Allen…
A novel Kozeny-Carman-based permeability model for hydrate-bearing sediments
The permeability of natural gas hydrate-bearing sediments is a crucial parameter for gas production efficiency. A series of models for the relation between the permeability and th…
Examining the human influence on global climate using an empirical model
We use the Empirical Model of Global Climate (EM-GC) to show that human activity has been responsible for ~0.14 °C/decade (range: 0.08 to 0.20) of warming from 1979 to 2010. This …
Upper mantle velocity structure beneath the Korean Peninsula by teleseismic traveltime tomography: evidence for heterog…
Constraining the properties of continental margin where dynamic interplay between the lithosphere and convective upper mantle actively occurs can provide implications to understan…
Characteristics of Cr-spinel in mantle peridotite-chromitite from Manipur Ophiolite Complex, India: Implication for mag…
As far the ophiolites sequence study has concerned, the characteristics of chromian spinel (Cr-spinel) from mantle rocks (peridotite) and associated chromitite has been a ubiquito…
New Paths for Survivability of Organic Material in the Martian Subsurface
Recent space missions have identified organics, chlorinated and non-chlorinated, on Mars. Understanding the origin, current state and reactivity of this carbonaceous material is c…
Low-Frequency Earthquakes Accompany Deep Slow-Slip beneath the North Island of New-Zealand
Slow-Slip Events (SSEs) haven been observed along the Hikurangi subduction zone of the North Island of New-Zealand. They occur both in the shallow plate interface (<15km depth) an…
Novel approaches to geospace particle transfer in the digital age: Progress through data science
The magnetosphere, ionosphere and thermosphere (MIT) act as a coherently integrated system (geospace), driven in part by solar influences and characterized by variability and comp…
The Chemistry and Mineralogy of Sinter Deposits From two Large Geysers in the Upper Geyser Basin, Yellowstone National …
We report the radiocarbon age, chemistry, and mineralogy of sinter deposits from Castle and Giant Geyser in the Upper Geyser Basin of Yellowstone National Park. At each geyser, we…
A comparison between the tower-based gradient method and the automated chamber method for measuring N2O fluxes from an …
Nitrous oxide (N2O) is a potent greenhouse gas and stratospheric ozone-depleting substance. More than half of anthropogenic N2O emissions result from agricultural activities. A br…
The Marcell Experimental Forest Research Catchments
The Marcell Experimental Forest (MEF) in northern Minnesota, USA may be the longest running research and monitoring program on the hydrology of peatland catchments. The MEF sits a…
Clouds and Sensitivities Across a Hierarchy of GFDL CMIP6 Models
The newest atmospheric climate model at GFDL, AM4, succeeded at significantly reducing the toa radiative flux biases as compared to CERES observations. Despite a relatively low to…
The Polar Cap (PC) index: invalid index series and a different approach.
The Polar Cap (PC) indices are derived from the magnetic variations generated by the transpolar convection of magnetospheric plasma and embedded magnetic fields driven by the inte…
Atmospheric origins of variability in the South Atlantic meridional overturning circulation
Insights from the RAPID–MOCHA observation network in the North Atlantic have motivated a recent focus on the South Atlantic, where water masses are exchanged with the neighboring …
Statistical evidence of a seismic quiescence before the Mw8.1 Iquique earthquake, Chile
The 2014 Iquique seismic crisis (Chile), culminating with a Mw 8.1 earthquake, April 1st, highlights a complex unlocking of the North Chile subduction interface which has been con…
Lattice Boltzmann simulations of viscous fingering: effect of wetting
The Lattice Boltzmann Method (LBM) is an elegant method to simulate fluid dynamics based on modelling distributions of particles moving and colliding on a lattice. We present exam…
Improved Accuracy in Shipborne Broadband Irradiance Measurements during MARCUS using New Tilt-Corrected SHIPRAD Systems
Surface broadband shortwave and longwave irradiance are key components of the surface energy budget and give insight on atmospheric constituents like clouds and aerosols as well a…
Wind-Forced Variability of the Remote Meridional Overturning Circulation
The mechanisms by which time-dependent wind stress anomalies at mid-latitudes can force variability in the meridional overturning circulation at low latitudes are explored. It is …
Building the Whole-plant Phenotype: Coupling Geophysically-based Below-ground Measurements with Above-ground Data
Wheat is one of the most widely grown crops and it plays an important role in food production. Currently there is considerable interest in identifying traits that contribute to hi…
Depth dependent azimuthal anisotropy beneath the Juan de Fuca plate system
We use surface wave measurements to reveal anisotropy as a function of depth within the Juan de Fuca and Gorda plate system. Using a two-plane wave method, we measure phase veloci…
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