Geophysics
Articles tagged with Geophysics
New research proposes Dante’s Inferno modelled a planetary impact 500 years before modern science!
A new explanation for 'Snowball Earth'
Analysis of 2025 Tracy Arm Fjord megatsunami suggests routes for earlier event detection
Researchers identified a massive landslide triggering a megatsunami in the Tracy Arm Fjord, Alaska, which posed distinct hazards due to confined environment. The study highlights potential new tools for identifying and monitoring landslide-generated tsunamis, including precursory warning signals.
Where was your back yard millions of years ago?
Researchers developed an online tool to reconstruct ancient Earth locations, enabling a more detailed understanding of biodiversity and climate evolution. The tool allows for the study of complex mountain ranges and vanished tectonic plates, providing new insights into mass extinctions and species migration.
Simulations prove two stable states of opposite polarity in an Earth-like dipole magnetic field
Researchers found that a spherical-shell dynamo can exist in two stable equilibrium states, with tiny initial fluctuations determining the polarity. The study suggests that breaking this stable state is necessary to trigger magnetic reversals, possibly through mechanisms outside magnetohydrodynamic theory.
New insights into how earthquakes stop
Researchers at Kyoto University discovered a previously unrecognized feature in near-fault seismic records of large earthquakes: a distinct stopping phase. This phase represents a systematic signal associated with the termination of rupture, demonstrating that many near-field recordings contain this coherent stopping phase.
in Eastern Africa, the cradle of humankind is tearing apart
The study found that the Turkana Rift has been significantly thinned, with the crust about 13 kilometers thick, compared to over 35 kilometers farther from the rift. This thinning is a sign of a process called 'necking' where the crust stretches and becomes weaker, promoting continued rifting.
Quaise Energy on track to build world’s first power plant using superhot geothermal energy
Quaise Energy is building the world's first power plant using superhot geothermal energy, with the goal of producing at least 50 megawatts of clean electricity. The project aims to harness temperatures greater than 300 degrees C and validate its long-held hypothesis that higher subsurface temperatures can improve power production.
Waves hit different on other planets
Scientists at MIT have developed a new wave model called PlanetWaves that predicts how waves will behave on planetary bodies with different liquids, atmospheres, and gravity. The model reveals that gentle winds can create massive waves on Titan, while hurricane-force winds barely move the surface of lakes on exoplanet 55-Cancri e.
Between eternal night and day, the faces of two cousins of the Earth
An international team maps the climate of rocky exoplanets like TRAPPIST-1b and c for the first time, ruling out dense atmospheres due to extreme temperatures. The study uses James Webb Space Telescope observations to determine surface temperatures on both day and night sides.
The depths of Neptune and Uranus may be “superionic”
Researchers discover quasi-one-dimensional superionic state of carbon hydride under extreme pressures and temperatures found deep inside ice giant planets. This finding has implications for heat and electricity movement through planetary interiors and could influence magnetic-field generation.
Sun Yat-sen University TianQin Research Center: Detection of Earth’s free oscillations utilizing Tianqin | Space research highlight
Researchers from Sun Yat-sen University and TianQin Research Center propose a novel method for detecting Earth's free oscillations using the TianQin space-borne gravitational wave detector. Through numerical simulation and Bayesian parameter estimation, they demonstrate clear detection of seismic events with high signal-to-noise ratios...
Saturn’s magnetic bubble is lopsided compared to Earth’s
A new study suggests Saturn's magnetic field is asymmetrical, with cusps located most often between 13:00 and 15:00. The researchers believe rapid spin and heavy plasma from Enceladus drag the field lines to the right.
Spacecraft data reveals surprising detail about Saturn's magnetic "shield"
Researchers have confirmed that giant planets like Saturn operate under a unique magnetospheric regime, with a shifted cusp location due to its rapid rotation. This discovery alters models of magnetic reconnection and high-energy particle acceleration, revealing new insights into Saturn's auroral activity.
Satellite captures origins of 2025 Kamchatka tsunami
Researchers analyzed satellite data from the NASA/CNES Surface Water and Ocean Topography (SWOT) satellite to study the 2025 Kamchatka earthquake and resulting Pacific-spanning tsunami. The findings reveal that the tsunami was generated within 10 kilometers of the subduction-zone trench, providing new insights into tsunamigenesis.
Imaging the Moon’s interior with fiber-optics
Using Distributed Acoustic Sensing technology, scientists deployed fibre-optic cables across the lunar surface to detect seismic waves generated by moonquakes, meteorites, and landings. The cables can record signals at a higher spatial resolution than traditional seismic networks.
The freshwater hidden beneath the Great Salt Lake
Researchers used airborne electromagnetic surveys to characterize a deep freshwater reservoir beneath Farmington Bay and Antelope Island. The study revealed that freshwater saturates the sediments beneath the lake's hypersaline surface to depths of 3-4 kilometers, extending towards the interior of the lake.
Earthquake scientists reveal how overplowing weakens soil at experimental farm
Researchers found that tilling and compaction disrupt intricate capillary networks within the soil, causing it to pool rainwater and form a muddy crust. The study provides a clear explanation for why tillage changes the structure of soil in ways that affect water retention.
New NASA DART mission data reveals that asteroids throw ‘cosmic snowballs’ at each other
Asteroids in binary systems actively exchange rocks and dust through gentle, slow-motion collisions, reshaping them over millions of years. The DART mission's findings confirm the YORP effect, where sunlight makes small asteroids spin faster, causing material to fly off their surfaces.
New study reveals asynchronous land–ocean responses to ancient ocean anoxia
A recent study has precisely dated the end of a geomagnetic field reversal, revealing asynchronous land–ocean responses to ancient ocean anoxia. The findings provide new insights into Early Cretaceous geodynamics and the evolution of marine and terrestrial carbon cycles.
Stress-testing the Cascadia Subduction Zone reveals variability that could impact how earthquakes spread
Researchers found the Cascadia Subduction Zone to be more active than previously thought, with signs of shallow earthquakes and fluid flow detected offshore. The study suggests variable fluid pathways could alter the behavior of large earthquakes on the fault, potentially influencing the severity of future events.
DOE climate report ‘demonstrably incorrect’, say leading scientists in new analysis
Leading climate scientists, including Prof Benjamin Santer, reiterate the role of humans in global warming and warn against using an inaccurate government report to inform legal decisions. The report's claims are factually incorrect, contradicting decades of research on human-caused temperature changes.
Methane’s missing emissions: The underestimated impact of small sources
Researchers used continuous and integrated readings of methane and ethane to identify overlooked emissions from restaurants, commercial facilities, and private residences. The study highlights the need for technology and policy to fix these hidden sources, which are estimated to be higher on weekdays.
Missing geomagnetic reversals in the geomagnetic reversal history
A team of researchers applied adaptive-bandwidth kernel density estimation to analyze the latest reversal timing dataset, revealing four distinct dips in the new reversal frequency model following the Cretaceous Normal Superchron. This suggests that short-time-interval geomagnetic reversals may be missing from the compiled record.
The ice on Greenland is acting strangely. Scientists believe they finally know why
Researchers at the University of Bergen have discovered that thermal convection, a slow churning movement inside the ice driven by vertical differences in temperature, is responsible for the giant plumes. This finding could help reduce uncertainties in models of future ice sheet mass balance and sea-level rise.
Keeping an eagle eye on carbon stored in the ocean
Researchers at Norway's NTNU are using advanced geophysical methods to improve the accuracy of carbon capture and storage site monitoring. A new laboratory equipped with a mock-up of an undersea storage site allows for real-time testing and validation of monitoring techniques. This breakthrough could reduce costs and improve the effici...
When Earth’s magnetic field took its time flipping
Scientists have discovered that ancient Earth magnetic field reversals lasted up to 70,000 years, revealing a new perspective on the geomagnetic phenomenon. This extended reversal period had significant impacts on atmospheric chemistry, climate processes, and the evolution of living organisms.
Predicting glacier surges – understanding ecological tipping points
Researchers developed a new method to measure ecosystem resilience and predict glacier surges, enabling early warnings for natural hazards. The study applies the approach to the Amazon rainforest and mountain glaciers in Alaska and Asia.
Revealing deformation mechanisms of the mineral antigorite in subduction zones
Deformation mechanisms of serpentinite, a key research target for understanding plate boundaries, have been investigated. Grain boundary sliding dominates deformation, producing 'B-type' CPO patterns, which contribute to seismic activity and earthquakes.
Study reveals the extent of rare earthquakes in deep layer below Earth’s crust
Researchers have identified a global map of rare continental mantle earthquakes, which will help scientists understand the mechanics of these events and potentially improve knowledge of risks from common earthquakes. The study, published in Science, used a new method to distinguish between mantle and crustal earthquakes.
Could ionospheric disturbances influence earthquakes?
The study suggests that ionospheric charge variations could interact with pre-existing fragile structures in the Earth's crust, influencing fracture processes. Strong solar activity could generate electrostatic pressures comparable to tidal or gravitational stresses, potentially contributing to earthquake initiation.
Understanding the hazard potential of the Seattle Fault zone: It’s “pretty close to home”
A new study investigates the dynamics of a complex fault zone under Seattle, revealing that secondary faults rupture more frequently than previously thought. Researchers hope to refine their understanding of these faults and determine how much hazard they pose to Seattle's four million residents.
The “Grand Canyon” of the Atlantic
A team of scientists discovered the King's Trough Complex, a colossal submarine canyon off Portugal's coast, formed by tectonic processes and hot mantle material. The structure extends over 500 kilometers, with Peake Deep as one of the deepest points in the Atlantic Ocean.
WVU research helps astronauts stay healthy on long space missions
West Virginia University scientists create digital twin models using AI technology to monitor astronaut movements and muscle activity, predicting potential health risks. The system can detect subtle early signs of trouble, providing personalized exercise routines and helping astronauts cope with balance issues upon return to Earth.
Scientists establish a means of using lasers to increase muon lifetime
Researchers at the University of Plymouth have discovered a method to increase muon lifetime using intense laser pulses. By applying quantum interference principles, they aim to develop new scientific facilities that utilize muons instead of electrons.
Tracking uncontrolled space debris reentry using sonic booms
Researchers use ground-based seismic sensors to detect sonic booms from reentering space debris, estimating its trajectory, size, composition, and potential impact locations. The approach was tested on the Shenzhou-15 orbital module's reentry, revealing a progressive fragmentation pattern that matched eyewitness reports.
Microscopic magnetic-field imaging of a single lunar dust grain
Researchers used a custom-designed microscope to image individual lunar regolith grains, revealing the carriers and origins of their magnetism. The study provides insights into the Moon's internal structure and thermal evolution history.
Polar weather on Jupiter and Saturn hints at the planets’ interior details
Scientists found that a planet's interior composition, specifically the 'softness' of its vortex base, determines the formation of polar vortices. The study suggests that Saturn may have a harder interior than Jupiter, leading to a single massive polar vortex, while Jupiter's softer interior gives rise to multiple smaller vortices.
Analyzing submerged fault structures to predict future earthquakes in Türkiye
A new 3D model of the fault beneath the Marmara Sea reveals where a future major earthquake could take place, helping improve earthquake forecasts. The study uses magnetotelluric measurements to identify distinct high-resistivity and low-resistivity zones, shedding light on ongoing processes of fault mechanics.
Deborah S. Kelley awarded the Wallace S. Broecker Medal
Dr. Kelley's discovery of the Lost City Hydrothermal Field revolutionized scientific understanding of fluid–rock interactions and chemosynthetic ecosystems. Her work has also transformed ocean observation through the NSF's Ocean Observatories Initiative Regional Cabled Array.
Ruth Harris honored with SSA Distinguished Service Award
Ruth Harris has made outstanding contributions to the Seismological Society of America through her drive to create student presentation awards and support open access options. Her active participation in numerous committees has benefited nearly every SSA committee.
Milner honored with Charles F. Richter Early Career Award
Kevin Milner, a research geophysicist at the USGS Geologic Hazards Science Center, has been awarded the Seismological Society of America's Charles F. Richter Early Career Award for his innovative work in seismic hazard analysis modeling and earthquake forecasting.
The electrifying science behind Martian dust
A team of researchers led by Alian Wang has discovered the isotopic geochemical consequences of Martian dust activities. The study reveals that dust-induced electric discharges can lead to various oxidized chemicals, including volatile chlorine species, activated oxides, and airborne carbonates.
Organic carbon in a submarine pressure cooker
The study found that organic materials in sediments decompose under supercritical conditions, releasing hydrogen molecules. This process is a more significant source of dissolved hydrogen in the ocean than previously believed.
Ultrasonic insights into well integrity: Advances and challenges in cement bond evaluation
A comprehensive review of ultrasonic measurements assesses cement bond quality in wells. Recent advances include high-resolution insight into casing-cement interfaces using pulse-echo and pitch-catch techniques.
Hidden clay intensified 2011 Japan megaquake, study confirms
Researchers confirm that a 30-meter-thick layer of soft and slippery pelagic clay at the Japan Trench enabled the earthquake to rupture all the way to the trench, producing a massive tsunami. The discovery sheds new light on why the 2011 earthquake behaved so differently from predicted models.
Study finds ocean sediments are key to survival of northeastern US salt marshes
Researchers find ocean sediment supply crucial for salt marshes to keep pace with rising seas. Southern New England marshes are showing signs of stress due to declining coastal sediment supply.
Southeast Asia’s greenhouse gas emissions demand urgent regional action
A new study reveals that Southeast Asia is a significant source of climate-warming gases, with deforestation and fossil fuel use leading the way. The region's natural carbon sinks are being overwhelmed, making it challenging for countries to reach climate neutrality without urgent regional action.
The Iberian Peninsula is rotating clockwise according to new geodynamic data
New research using earthquake and satellite data reveals the Iberian Peninsula is rotating clockwise due to collision between Eurasia and Africa plates. The study provides insights into geodynamic processes and deformation fields in the region.
Coral reefs have stabilized Earth’s carbon cycle for the past 250 million years
Researchers found that coral reefs governed the pace of climate recovery by tuning the planet's carbon and climate cycles. The study suggests that reefs played a crucial role in stabilizing climate, but modern reef systems are declining due to warming and ocean acidification.
Team investigates significance of newly discovered hydrothermal fields off the island of Milos
Researchers found three major vent areas aligned with active fault zones, controlled by the island's tectonic fabric. The discovery establishes Milos as a natural laboratory for studying hydrothermal activity, volcanism, and tectonics.
Looking inside icy moons
Researchers have discovered that tidal heating can cause ice shells to melt, leading to ocean boiling and unique geological features. The process can also drive compressional tectonics, shaping the surface of icy moons.
NJIT scientists track recent solar flare disruptions in Earth’s ionosphere
Scientists at NJIT's Center for Solar-Terrestrial Research tracked the impact of recent X-class solar flares on Earth's upper atmosphere. The flares triggered radio blackouts across Africa and Europe, producing auroras that reached unusually low latitudes, including as far south as Florida.
2025 Santorini seismic unrest triggered by “pumping” magma flow
A massive swarm of earthquakes in 2025 was triggered by pulses of magma tunneling far below the seafloor, according to a new study. The findings provide a detailed look at a 'pumping' magmatic dike in action and offer insights into more reliable eruption forecasting.
A new angle of study for unveiling black hole secrets
Scientists use XL-Calibur telescope to measure polarization of light around Cygnus X-1 black hole, gaining insights into matter's fall and energy release. The observations will be used to test computer simulations and shed light on black hole physics.
Lost signal: How solar activity silenced earth's radiation
A team of scientists discovered a unique radio emission, the hectometric continuum, that appears after sunset and disappears before sunrise. This phenomenon is linked to processes in the near-Earth plasma and may be related to exoplanetary magnetic fields.
Can AI help us predict earthquakes?
Machine learning models detected subtle signals that emerge just before the onset of laboratory earthquakes. The key predictive factor is the evolution of shear stress on creeping regions of the fault.
Ancient bogs reveal 15,000-year climate secret, say scientists
Researchers have discovered that sudden shifts in the Southern Westerly Winds 15,000 years ago triggered a massive growth of ancient bogs across the Southern Hemisphere. The study found that the shifting winds created an ideal climate for the swamps to form, and now believe they play a crucial role in regulating carbon stores in peatland.
SRL welcomes first Deputy Editor-in-Chief
Hongfeng Yang has been appointed as the first deputy editor-in-chief of Seismological Research Letters (SRL), a journal published by the Seismological Society of America. Yang brings over a decade of editorial experience and fresh ideas to promote SRL's growth.