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Showing 8951 to 9000 of 22070 works
The Role of an Excess Fluid Phase in Controlling Eruption Styles and Ascent Rates in Basaltic Andesite Magmas
Effusive and explosive eruptions often occur from the same volcano, yet the reasons behind such a wide ranging eruptive behaviour remain poorly understood. Here we explore the rol…
Image-based remote approach of Canola yield modelling with cumulative temporal ground cover for precision agronomy
Agronomic technological advancements provide more precise means to establish methodologies that can estimate yield response in many different ways. We are experimenting with a new…
Climate change mitigation easier than suggested by models 1
Scenarios play a central role in helping policymakers envisage pathways to limit global warming to well below 2°C. We demonstrate that the most recently assessed set of climate st…
Release from biogenic particles, benthic fluxes, and deep water circulation control Cr and δ 53 Cr distributions in the…
Chromium (Cr) has shown promise as a paleoceanographic proxy due to the redox-driven control of dissolved Cr concentrations ([Cr]) and stable isotope composition (δ53Cr). However,…
Spatiotemporal changes in seismic velocity associated with hydraulic fracturing-induced earthquakes near Fox Creek, Alb…
To characterize the subsurface geomechanical response to hydraulic fracturing activities, we study the spatiotemporal changes of seismic velocity during the completion of four inj…
Post-Seismic Deformation Related to the 2016 Central Italy Seismic Sequence from GPS Displacement Time-Series
The 2016-2017 Central Italy earthquake sequence struck the central Apennines between August 2016 and October 2016 with Mw ∈ [5.9; 6.5], plus four earthquakes occurring in January …
Distribution characteristics of C-N-S microorganism genes in different hydraulic zones of high rank coal reservoirs in …
Microbial decomposition of carbon and biogenic methane in coal is one of the most important issues in CBM exploration. Microbial C-N-S functional genes in different hydraulic zone…
Andic Soil Properties and Tephra Layers Hamper C Turnover in Icelandic Peatlands
Due to frequent volcanic activity and erosion of dryland soils, magnified by land use after human settlement (c. 870 AD), peatlands in Iceland receive regular additions of mineral…
The new Radiosounding HARMonization (RHARM) dataset of homogenized radiosounding temperature, humidity and wind profile…
Observational records are more often than not influenced by residual non‐climatic factors which must be detected and adjusted for prior to their usage. Moreover, measurement uncer…
Non-Parametric Confidence Sets for Change Points in Time Series of Extremes
Recently a new approach to change point analysis was presented in the statistical literature. This approach is based on the construction of confidence sets. One way to apply it is…
The relative effects of the accretionary wedge and sedimentary layer on the rupture process of subduction zone earthqua…
Low-velocity accretionary wedges and sedimentary layers overlying continental plates widely exist in subduction zones. However, the two structures are commonly neglected in veloci…
FRIS revisited in 2018: On the circulation and water masses at the Filchner and Ronne Ice Shelves in the southern Wedde…
The Filchner-Ronne Ice Shelf (FRIS) is characterized by moderate basal melt rates due to the near-freezing waters that dominate the wide southern Weddell Sea continental shelf. We…
Warm phase of AMV damps ENSO through weakened thermocline feedback
Interactions between ocean basins affect El Niño Southern Oscillation (ENSO), altering its impacts on society. Here, we explore the effect of Atlantic Multidecadal Variability (AM…
Spatial Trends and Drivers of Bedload and Suspended Sediment Fluxes in Global Rivers
Bedload flux is notoriously challenging to measure and model. The dynamics of bedload therefore remains largely unknown in most fluvial systems worldwide. We present a global scal…
AMOC variability and watermass transformations in the AWI climate model
Using the depth (z) and density (ϱ) frameworks, we analyze local contributions to AMOC variability in a 900-year simulation with the AWI climate model. Both frameworks reveal a co…
Precipitation and lake water evaporation recorded by terrestrial and aquatic n-alkane δ2H isotopes in Lake Khar Nuur, M…
The compound-specific hydrogen isotopic composition (δ2H) of n‑alkanes is a valuable proxy to investigate hydrological conditions in lake sediments. While terrestrial n-alkanes re…
SPF ICE: A Novel Approach to Model the Amount And Effectiveness of Silica to Preserve Glaciers Using Reinforcement Lear…
Glaciers cover nearly 10 percent of the earth’s surface but are melting at an inexorable rate. Antarctica’s Doomsday Glacier’ is melting faster and could raise global sea levels b…
Pleistocene aridification of the Eastern Taurides, Turkey revealed by (U-Th)/He ages of supergene mineralisation in Att…
The Taurus Mountains form the southern margin of the Central Anatolian Plateau of Turkey and form an orographic barrier separating the cold, semi-arid interior to the north from t…
Air Pollution from Forest and Vegetation Fires in Southeast Asia Disproportionately Impacts the Poor
Forest and vegetation fires, used as tools for agriculture and deforestation, are a major source of air pollutants and can cause serious air quality issues in many parts of Asia. …
Realism of Lagrangian large eddy simulations: Tracking a pocket of open cells under a biomass burning aerosol layer
An approach to improve the fidelity of Lagrangian large eddy simulation (LES) of boundary layer clouds is presented and evaluated with satellite retrievals and aircraft in-situ me…
Delayed-mode quality control of oxygen, nitrate and pH data on SOCCOM biogeochemical profiling floats
The Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project has deployed 194 profiling floats equipped with biogeochemical (BGC) sensors, making it one of the…
Capability of TEC correlation analysis and deceleration at propagation velocities of MSTID: Preseismic ionospheric anom…
Capability of TEC ’s CoRrelation Analysis (CRA) (Iwata and Umeno, 2016) for detecting preseismic anomaly is explained from the view point of the increase in signal-to-noise ratio …
Transpolar arcs: Seasonal dependence identified by an automated detection algorithm
Transpolar arcs (TPAs) are auroral features that occur polewards of the main auroral oval suggesting that the magnetosphere has acquired a complicated magnetic topology. They are …
Leveraging earth observations for estimating health risks associated with flooding precipitated by heavy rains
Purpose:Flooding following heavy rains precipitated by hurricanes/tropical storms has previously been shown to increase fecal-oral diseases, vector-borne disease transmission and …
Assimilative Mapping of Auroral Electron Energy Flux using SSUSI Lyman-Birge-Hopfield (LBH) Emissions
Far ultraviolet (FUV) imaging of the aurora from space provides great insight into dynamic coupling of the atmosphere, ionosphere and magnetosphere on global scales. To gain quant…
A Fire-Spotting Parameterization Coupled with the WRF-Fire Model
A fire-spotting parameterization was developed for the WRF-Fire component of the WRF model version 4.0.1. The parameterization uses a Lagrangian particle transport framework and i…
Multi-stage Ensemble-learning-based Model Fusion for Surface Ozone Simulations: A Focus on CMIP6 Models
Accurately simulating global surface ozone has long been one of the principal components of chemistry-climate modelling, but divergences in simulation outcomes have been reported …
Hydrological drivers of bedload transport in an Alpine watershed
Understanding and predicting bedload transport is an important element of watershed management. Yet, predictions of bedload remain uncertain up to several order(s) of magnitude. I…
Massive multi-mission statistical study and analytical modeling of the Earth’s magnetopause: 2 - Shape and location
The Earth magnetopause is the boundary between the magnetosphere and the shocked solar wind. Its location and shape are primarily determined by the properties of the solar wind an…
Coupled ocean/sea ice dynamics of the Antarctic Slope Current driven by topographic eddy suppression and sea ice moment…
The Antarctic Slope Current (ASC) plays a central role in redistributing water masses, sea ice, and tracer properties around the Antarctic margins, and in mediating cross-slope ex…
Massive multi-mission statistical study and analytical modeling of the Earth’s magnetopause: 4- On the near-cusp magnet…
The shape and location of the magnetopause current sheet in the near-cusp region is still a debated question. Over time, several observations led to contradictory conclusions rega…
Tectonic low-frequency earthquakes in Shikoku, Japan: source scaling, size distribution and observational limits
Low-frequency earthquakes are peculiar energy-release events mostly occurring at the transition between the seismogenic and the freely creeping zones of a subducting slab. The sou…
The role of serpentinization in magnetizing the Noachian crust of Mars
Presence of a remnant crustal magnetic field and its spatial relationship to large impact basins indicates that Mars had a global dynamo during the Noachian eon (>4 Ga) (1-4). The…
The Speciation and Coordination of a Deep Earth Carbonate-Silicate-Metal Melt
Ab initio molecular dynamics calculations on a carbonate-silicate-metal melt were performed to study speciation and coordination changes as a function of pressure and temperature.…
UAV-Lidar Data Combined with Multispectral and Thermal Infrared Imagery May Increase the Accuracy of Water Vapor Flux E…
Advances in remote sensing technology, notably in UAV Light Detection and Ranging (Lidar), may yield to better predictions of the implications of land cover alterations on greenho…
Constraints from exhumed rocks on the seismic signature of the deep subduction interface
Low Velocity Zones (LVZs) with anomalously high Vp-Vs ratios occur along the downdip extents of subduction megathrusts in most modern subduction zones and are collocated with comp…
Evidence of recent active volcanism in the Balleny Islands (Antarctica) from ice core records
Records of active volcanism in Antarctica provide key information to understand the role of volcanoes shaping the polar climate and its potential impacts on the cryosphere. The la…
Improved Representation of Tropical Cyclones in the NASA GISS-E3 GCM
The next-generation global climate model from the NASA Goddard Institute for Space Studies, GISS-E3, contains many improvements to resolution and physics that allow for improved r…
P wave tomography for 3-D radial and azimuthal anisotropy beneath Greenland and surrounding regions
We present the first 3-D images of P -wave radial anisotropy (RAN) and azimuthal anisotropy (AAN) down to 750-km depth beneath Greenland and surrounding regions. The results are o…
The recent emergence of Arctic Amplification
Arctic Amplification is robustly seen in climate model simulations of future warming and in the paleoclimate record. Here, we show that in the instrumental record Arctic Amplifica…
Linking Atmospheric Cloud Radiative Effects, Tropical Precipitation, and Column Relative Humidity
Work in recent decades has demonstrated a robust relationship between tropical precipitation and the column relative humidity (CRH). This study identifies a similar relationship b…
Inferring Polluted Asian Absorbing Aerosol Properties Using Decadal Scale AERONET Measurements and a MIE Model
Absorbing aerosols uniquely impact radiative forcing, aerosol chemical transport, and meteorology. This paper uniquely quantifies BC core and sulfate shell size and mass using dec…
Seismic Noise Autocorrelations on Mars
Mars is the first extraterrestrial planet with seismometers (SEIS) deployed directly on its surface in the framework of the InSight (Interior Exploration using Seismic Investigati…
Joint-inversion of spring flow and transport signatures: a multi-purpose approach for characterization and forecast of …
Characterization of karst systems, especially the assessment of structure and geometry of conduits along with forecast of state-variables, are essential for groundwater quality/qu…
High-precision earthquake location using source-specific station terms and inter-event waveform similarity
Earthquake monitoring and many seismological studies depend on earthquake locations from phase arrival-times. We present an extended, arrival-time earthquake location procedure (N…
Impact of the 2016 Southeastern U.S. Wildfires on the Vertical Distribution of Ozone and Aerosol at Huntsville, Alabama
We present an integrated analysis of measurements from ozonesonde, ozone (O3) Differential Absorption Lidar (DIAL), ceilometer, surface monitors, and space-borne observations in c…
Sun superflaring mechanism from decade-scale magnetic entanglement with Jupiter
Sun–Jupiter decade-scale magnetic entanglement emerges from Wilcox Solar Observatory 1975-2021 N–S ≲150 μT mean-field data, as a global response of solar magnetic fields to the ma…
Are natural fractures pervasive?
Fractures and their connectivity are essential for fluid flow in low perme-ability formations. Abundant outcrops can only provide two-dimensional (2D) information, but subsurface …
Strong upper-plate heterogeneity at the Hikurangi subduction margin (North Island, New Zealand) imaged by adjoint tomog…
We use adjoint tomography to invert for three-dimensional structure of the North Island, New Zealand and the adjacent Hikurangi subduction zone. Due to a shallow depth to the plat…
Evidence for deeply-subducted lower-plate seamounts at the Hikurangi subduction margin: implications for seismic and as…
Seamounts are found at many global subduction zones and act as seafloor heterogeneities that affect slip behavior on megathrusts. At the Hikurangi subduction zone offshore the Nor…
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