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Plasma plume symmetrization by electron rotation and ion detachment properties in a diverging magnetic nozzle

Physical Review E (Plasma physics) - Tue, 03/24/2026 - 10:00

Author(s): Romain Pioch, Pascal Chabert, and Victor Désangles

The ion flux direction in a rapidly diverging magnetic field and the role of Earth's magnetic field in plasma dynamics are investigated experimentally using a low power electron cyclotron resonance thruster. The comparison between ion trajectories measured with a directional Faraday cup and the magn…


[Phys. Rev. E 113, 035209] Published Tue Mar 24, 2026

Controlled dust mobilization on a solid surface with grazing electron beam incidence

Physical Review E (Plasma physics) - Tue, 03/24/2026 - 10:00

Author(s): Sean Gopalakrishnan, Xu Wang, Mihály Horányi, Vladimir Kvon, Manis Chaudhuri, Andrei Yakunin, Luuk Heijmans, Hariprasad Gangadharan, Pavel Krainov, and Dmitry Astakhov

We present experimental results of dust mobilization on a solid surface under an electron beam with grazing incidence. When the electron beam energy has a secondary electron yield greater than 1, dust particles move in the opposite direction of the electron beam. This is caused by asymmetric chargin…


[Phys. Rev. E 113, 035210] Published Tue Mar 24, 2026

When NASA's experimental technology detects a tsunami, it may help save lives

Phys.org: Earth science - Tue, 03/24/2026 - 02:40
A new data visualization illustrates how an experimental NASA technology can provide extra lead time to communities in the path of a tsunami. Called GUARDIAN (GNSS Upper Atmospheric Real-time Disaster Information and Alert Network), the software detects slight distortions in satellite navigation signals to spot hazards on the move.

Diamonds are not a geoengineer's best friend: Carbon impurities provide a reality check

Phys.org: Earth science - Mon, 03/23/2026 - 19:30
The field of solar geoengineering revolves around the idea of cooling the globe via the injection of aerosols to reflect sunlight or to thin clouds. One such strategy, stratospheric aerosol injection (SAI), aims to mimic the effects of a volcanic eruption. Volcanoes spew sulfur dioxide into the stratosphere, which then reflects light back into space, cooling Earth for potentially a year or longer, as documented in previous eruptions.

Climate change may complicate avalanche risk across the Pacific Northwest

Phys.org: Earth science - Mon, 03/23/2026 - 19:20
This winter was one of the warmest on record across the West. As a result, many snowy, alpine areas have seen bouts of winter rainfall where there would ordinarily only be snow. These unusual weather patterns have contributed to an abysmal ski season, but they can also set the stage for dangerous avalanches.

Comparison between monthly median foF2 values derived from manually and automatically scaled data over Rome from 2006 to 2022

Publication date: Available online 17 March 2026

Source: Advances in Space Research

Author(s): Carlo Scotto, Dario Sabbagh, Alessandro Ippolito, Loredana Perrone

Catalytic Ignition for Hydroxylammonium Nitrate-Based Thruster Based on Gas Dynamic Resonance Heating

Publication date: Available online 16 March 2026

Source: Advances in Space Research

Author(s): Yezhen Sun, Jialin Ren, Jun Chen, Guozhu Liang, Zhigang Wang, Liangen Xia, Xiaodong Wang

Machine Learning Approach to Analyzing Equatorial Ionization Anomaly Characteristics and Space Weather Parameters

Publication date: Available online 16 March 2026

Source: Advances in Space Research

Author(s): Ephrem B. Seba, Stefaan Poedts

Ionospheric response to the July 29, 2025 Kamchatka Tsunami from Multi-Instrument Measurements

Publication date: Available online 16 March 2026

Source: Advances in Space Research

Author(s): Mefe Moses, Trisani Biswas, Haris Haralambous, Krishnendu Sekhar Paul

Thermospheric Density Uncertainty Propagation based on Linearized Relative Orbital Dynamics

Publication date: Available online 16 March 2026

Source: Advances in Space Research

Author(s): Roman Krückel, Thomas Hobiger

Green clay courts serve up environmental solutions by absorbing carbon dioxide

Phys.org: Earth science - Mon, 03/23/2026 - 18:40
Green clay tennis courts are able to absorb massive amounts of carbon dioxide via enhanced rock weathering, according to a new study in Applied Geochemistry. Enhanced rock weathering—the process of using silicate rocks like basalt to remove carbon dioxide from the atmosphere through the rocks' chemical reaction with rainfall—has emerged in recent years as a promising method of reducing carbon emissions. Green clay tennis courts in the US are made of metabasalt, a type of basalt with similar properties allowing for carbon sequestration.

Tracking Arctic freshwater flow from space

Phys.org: Earth science - Mon, 03/23/2026 - 17:10
Arctic rivers wind through remote tundra and boreal forests, freezing solid in winter and surging each spring with snowmelt, eventually emptying into the ocean. Runoff—water that does not soak into the ground but instead flows over the land surface—further increases the volume of freshwater entering the sea.

How soil microbes may control the future of our planet

Phys.org: Earth science - Mon, 03/23/2026 - 12:00
The soil beneath our feet is a huge carbon bank storing up to approximately three times more carbon than the entire atmosphere. That makes it a significant player in the future of our climate. If even a small fraction of the carbon escapes into the air as carbon dioxide, it could accelerate planetary heating. But what determines whether the carbon stays in the ground or escapes? According to new research published in the journal Nature Climate Change, water is the deciding factor. The wetter the soil, the more carbon stays in the ground.

Study maps particulate thiols across western North Pacific, tracing them to phytoplankton

Phys.org: Earth science - Sun, 03/22/2026 - 20:00
In Science of The Total Environment, researchers demonstrate the broad distribution of particulate thiols in the western North Pacific and show that their main source is marine phytoplankton. The analysis indicates that differences in thiol concentrations between ocean areas are significantly influenced by water mass properties, phytoplankton composition, and environmental stress.

Optimization of Multivariate Linear Regression Model for Ionospheric Disturbed Index

Publication date: Available online 16 March 2026

Source: Advances in Space Research

Author(s): Xiaoxue Min, Cheng Wang

Satellite radar shows Alaska glaciers melt three extra weeks for each 1°C of summer warming

Phys.org: Earth science - Sat, 03/21/2026 - 10:30
Alaska's glaciers respond to climate change by melting for three additional weeks with every 1 degree Celsius increase in the average summer temperature, data from satellite-mounted radars show.

Why some regions are winning the fight against groundwater depletion

Phys.org: Earth science - Fri, 03/20/2026 - 22:00
For half the world's population, the water in their drinking glasses comes from below them. Groundwater also supplies 40% of global irrigation projects. Alarmingly, more than a third of the planet's aquifers, or groundwater basins, are dropping. Declining water tables leave entire regions vulnerable to drought, land subsidence or seawater intrusion while damaging ecosystems and reducing water access. Properly securing this resource is a matter of social, humanitarian and environmental security.

Rivers and tidal currents keep 80% of microfibers from reaching oceans, study suggests

Phys.org: Earth science - Fri, 03/20/2026 - 18:40
Every time we do a load of laundry, tiny fibers of polyester escape from our clothes and slip down the drain. These microfibers, so small they can be invisible to the naked eye, are among the most common forms of microplastic in the ocean. Yet, new research published in Journal of Geophysical Research: Oceans shows that most of them may not make it that far.

The deep freshwater reservoir hidden beneath the Great Salt Lake

Phys.org: Earth science - Fri, 03/20/2026 - 14:40
A potentially huge underground reservoir of freshwater beneath the Great Salt Lake is coming into sharper focus with a new study that used airborne electromagnetic (AEM) surveys to X-ray geologic structures under Farmington Bay and Antelope Island off the lake's southeastern shore.

AI shows promise for flood forecasting and water security in data scarce regions

Phys.org: Earth science - Fri, 03/20/2026 - 09:00
New research reveals that "foundation models" trained on vast, general time-series data may be able to forecast river flows accurately, even in regions with little or no local hydrological records. The approach could improve flood warnings, drought planning and water-resource management in parts of the world where monitoring data is limited.

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