Researchers analyzed seismic data from the region since 2014, detecting a 8-month long crustal seismicity transient suggesting a preparation process before the M 7.8 Kahramanmaraş earthquake. This highlighted high and increasing seismic hazard in the area.
A UGR study found that physical activity wristbands can help change habits and overcome sedentary lifestyles among school children. The 'School-Fit' project showed improved daily physical activity parameters, including increased steps and moderate-to-vigorous activity.
A new method calculates rockfall risk over large areas of very high mountains, considering both earthquake-induced and erosion-driven risks. The study found that nearly 60% of total rockfall hazard in the Andean zone is attributable to seismic activity.
A new study by Colorado State University reveals that seismic signals show a growing intensity in ocean waves since the late 20th century, attributed to global warming. The research indicates that storms are becoming more intense and wave energy is increasing globally, posing a serious threat to coastal ecosystems and infrastructure.
New research reveals that endangered whales and dolphins inhabit the Hellenic Trench off Greece year-round, challenging seismic surveys and oil and gas exploration. The study confirms the presence of four species, including sperm whales, in both summer and winter, highlighting the need for conservation measures.
GEOMAR researchers used 3D seismics to recreate the 1650 Kolumbo volcano eruption, finding that a landslide followed by an explosion created the devastating tsunami. The study provides valuable insights for monitoring submarine volcanic activity and potentially developing early warning systems.
Researchers used seismic data to locate and identify a thin layer of molten silicates overlying Mars' metallic core. The discovery reveals a denser and smaller Martian core, aligning with other geophysical data and analysis of Martian meteorites. This finding provides new insights into how Mars formed, evolved, and became a barren planet.
Scientists discovered a molten silicate layer beneath the Martian mantle using InSight mission data, contradicting earlier assumptions about the planet's internal structure. This new finding suggests that Mars experienced an early magma ocean stage and provides insights into the formation of its core.
A new study demonstrates how unused telecommunications fiber optic cables can be transformed for offshore Earthquake Early Warning (EEW) systems. Researchers used a 50-kilometer cable to sample seismic data at 8,960 channels and achieved an approximate three-second improvement in EEW alert times compared to onshore DAS arrays.
Researchers at the University of Texas at Austin developed an AI algorithm that accurately predicted 14 earthquakes within about 200 miles of their location and strength, with only one false warning. The system detected statistical bumps in real-time seismic data and paired them with previous earthquakes to make predictions.
Soil liquefaction, a destructive phenomenon during earthquakes, is redefined by this groundbreaking study. Liquefaction can now be understood to occur in drained conditions with low seismic-energy density levels, triggered by seismic shaking facilitating interstitial fluid flow within the soil.
A team of researchers from Japan found that water enhances energy dispersion and reduces elastic moduli in rocks, leading to increased seismic wave attenuation. The study suggests the oceanic asthenosphere must contain water, explaining sharp velocity drops and near-constant attenuation observed at the LAB.
A new study published in Diabetologia reveals that morning and afternoon physical activity are associated with a lower risk of developing type 2 diabetes. The researchers found that each 1-unit increase in MET-hour physical activity was linked to a 10% reduction in risk, with the association being most pronounced in the morning and aft...
The 1923 Kantō earthquake sparked devastating fires that killed 90% of Tokyo's population, making it one of the deadliest natural disasters in history. The study highlights the importance of fire prevention and response as part of earthquake mitigation plans for regions with strong seismic shaking and wood-framed buildings.
Scientists used distributed acoustic sensing (DAS) on a 37.4-kilometer-long fiber optic cable to track sea ice formation and retreat with fine spatiotemporal detail, revealing rapid changes up to 10 kilometers in less than a day. The technique offers improved resolution compared to satellite images.
A team of scientists at Caltech used a section of fiber optic cable to measure the intricate details of a magnitude 6 earthquake, pinpointing four individual asperities that led to the rupture. The study demonstrates the potential of distributed acoustic sensing technology to improve our understanding of earthquake physics.
A new study using nearly a century of seismic data suggests that the average heights of winter waves along California's coast have increased as climate change has heated up the planet. This could amplify the effects of sea-level rise, leading to significant coastal impacts and erosion.
Researchers from the University of Tokyo and Stanford University analyze slow and fast earthquakes, showing that their magnitudes vary with time. The study confirms the scaling law for slow earthquakes, which defines the relationship between magnitude and duration, and reveals physical processes governing events.
Decades of seismic data reveal that central Utah's earthquake 'swarms' are more common than other types of sequences, with 80% of sequences being swarms. The study also found that these swarms exhibit heterogeneous behavior across different locations in the region.
The study reveals that LLSVPs exhibit higher densities at the bottom of the lower mantle, while displaying lower densities above a depth of approximately 2700 kilometers. Elevated temperatures and enriched concentrations of iron and bridgmanite are also detected.
The Great Sitkin Volcano in Alaska has two magma chambers that drive its long-lived and explosive eruptions. Scientists have discovered a six-stage eruption cycle, with the interaction between the chambers contributing to lava effusion. This study helps predict volcanic eruptions and assess hazards.
A study examined the seismic performance of 12 hospitals in Turkey's southcentral region, finding that base-isolated structures performed better than fixed-base ones during the 2023 earthquakes. The report provides valuable insights for policymakers and engineers to enhance hospital resilience and disaster response strategies.
Researchers have found a surprising correlation between global seismic activity and changes in cosmic radiation intensity, potentially aiding in earthquake prediction. The periodicity of this phenomenon has been identified as every 10-11 years, but its exact cause remains unknown.
A research team used a new seismic inversion algorithm to study lithospheric delamination and its controls on the Mesozoic Magmatic Province in South China. High-velocity anomalies were found at depths of less than 90 kilometers, suggesting lithosphere blocks began to delaminate at 180-170Ma.
Researchers used a powerful supercomputer to analyze the 2019 Ridgecrest earthquakes, which showed how faults can interact across segments and cause unexpected interactions. The study's findings improve seismic hazard assessment and preparedness for complex earthquake systems.
Scientists have discovered weak, fossilised sediments beneath the seafloor of Antarctica's eastern Ross Sea, which led to massive underwater landslides. These layers made the area susceptible to failure due to past climate change.
Satellite imagery revealed a rupture zone of approximately 75 km in length, with surface features showing a gradual widening and decrease in horizontal dislocations. The study found secondary hazards such as liquefaction mainly occurring in low-lying terrain.
Researchers determined the Martian crust's global structure using seismic data from a massive marsquake. The crust averages 42-56 kilometers in thickness, with variations between the northern and southern hemispheres.
The study found that the Tanlu Fault Zone underwent episodic dextral strike-slip movement in late Cenozoic, with the Banquan Basin serving as a record of this process. The movement was linked to the evolution of the pull-apart basin and surrounding faults.
Researchers used NASA InSight data to directly measure Mars' core properties, finding a completely liquid iron-alloy core with high percentages of sulfur and oxygen. This discovery provides new insights into Martian formation and geological differences between Earth and Mars, potentially impacting planetary habitability.
Researchers at the University of Bristol used NASA's InSight lander data to detect seismic waves traveling into Mars' core, revealing a denser and smaller core comprising iron and numerous other elements. The study found that the core's composition is distinct from Earth's, with a high fraction of light elements alloyed with iron.
A recent study identified over 182,000 small seismic events in South Korea, with 135,000 related to mining explosions. The researchers used machine learning techniques to analyze data from 421 seismic stations and found distinct patterns that allowed them to distinguish between microseismic events and earthquakes.
Researchers confirm that water causes incipient melting, leading to reduced S-wave velocity and enhanced electrical conductivity. The presence of low-velocity zones in continental China is attributed to basal hydration weakening the lithosphere, converting it into asthenosphere.
Researchers have developed a way to quickly detect and assess glacial valley landslides in coastal Alaska, which can trigger dangerous local tsunamis. They use seismic data to pinpoint landslide events and estimate their volume, aiming to develop an operational detection tool for tsunami centers.
Seismic arrays in California's Long Beach and Seal Beach detected over 1,200 shallow earthquakes, showing the Newport-Inglewood fault splays widely at shallow depths. This suggests that a rupture to propagate to the surface may have multiple paths, implications for earthquake hazard planning.
Research led by The University of Alabama reveals a dense, yet thin, layer of ancient ocean floor surrounding the Earth's core-mantle boundary. This ultra-low velocity zone is denser than the rest of the deep mantle and may play an important role in heat escape from the core.
Researchers used machine learning techniques to analyze seven years' worth of seismic data from Axial Seamount, identifying new signals including fin whale calls, tremors, earthquakes, and lava events. This study improves understanding of volcano dynamics and aids in predicting eruptions.
A recent study published in Nature Communications reveals that Earth's anisotropic inner core structure is driven by the dipole geomagnetic field. The researchers found that hexagonal-close-packed (hcp) Fe-H alloy exhibited both seismic anisotropy and H-ion diffusion anisotropy under high pressure-temperature conditions.
Research from Penn State found that self-monitoring physical activity through smartwatches leads to increased motivation and activity levels. Participants who received prompts to report their activity took hundreds more steps in a given day compared to those who didn't receive such prompts.
A study by Revathy Parameswaran and colleagues compared ground motion and magnitude estimates from satellite and seismic records for the 2021 Chignik earthquake. The researchers found that GNSS and strong-motion acceleration seismic data can be used interchangeably or jointly for rapid magnitude or ground motion estimation.
Researchers have detected a complex variety of seismic tremor signals at Mefite d'Ansanto, a non-volcanic carbon dioxide emission site in southern Italy. The analysis reveals three main types of tremor signals over different frequencies, which may be related to fluid discharge and changes in flow velocities.
Seismologists from ANU have documented evidence of a distinct layer inside the Earth's inner core, known as the innermost inner core, which is a solid metallic ball. This discovery provides a new way to probe the Earth's inner core and its centremost region.
A new analysis of seismic data recorded after the Tonga eruption has revealed two distinct sequences of events, including quasi-periodic explosions and a massive final event. The study used back-projection techniques to tease out details from teleseismic P waves, shedding light on the volcano's internal dynamics.
The study found that seismometers overlying the basin's deepest areas recorded stronger low-frequency amplification, while monitors at shallow edges recorded minimal amplification. Higher frequency amplification was detected in both deeper and shallower areas. This phenomenon is making the ground motion last longer and feel stronger.
The largest earthquake on Mars, a 4.7 magnitude marsquake, revealed layers in the crust suggesting a massive meteoroid impact, with possible alternating volcanic and sedimentary rocks. This finding provides evidence for past collision events that shaped the planet.
The study found that earthquake-accelerated landslides (EALs) can maintain accelerated motion for a long time after the earthquake, causing particularly serious human casualties in seismically active areas. Satellite radar observations detected and investigated EALs in Central Italy, leading to the first ever complete EAL inventory.
A team of researchers from Cornell University has developed a method to study delayed earthquake triggering in laboratory settings. They found that the speed and strength of 'creep fronts' are sensitive to fault stress levels from previous earthquakes, which could potentially serve as local stress meters for predicting seismic events.
A new study found that mothers of young children and those with multiple children tend to engage in lower amounts of moderate or vigorous physical activity. However, these groups may still benefit from efforts to boost their opportunities for higher-intensity activity.
Researchers found that Caltech Hall's natural frequencies have increased by 5% in the east-west direction and 2% in the north-south direction over 20 years. This suggests up to 20% variation in the building's stiffness between earthquakes, posing a challenge for seismic structural health monitoring.
A new study using wearable devices found that moderate-to-vigorous physical activity significantly reduces cardiovascular disease risk, even when total physical activity volume is increased. Increasing the proportion of intense physical activity within overall activity levels has an additional substantial benefit.
Scientists have detected seismic surface waves on Mars for the first time, providing new insights into the planet's crust and structure. The study estimates the average properties of the Martian crust between 3 to 18.6 miles below the surface, revealing faster seismic velocities that suggest compositional differences or reduced porosity.
Researchers used seismic data and orbital observations to refine knowledge of Mars' planetary interior. The studies provide new constraints that validate and refine models of the planet's internal structure and dynamics of major impacts.
A recent study published in Nature suggests that Mars is still experiencing volcanic activity, with quakes originating from the Cerberus Fossae region indicating a warm source of molten lava. The seismic data also shows darker deposits of dust surrounding the area, suggesting geological evidence of more recent volcanic activity.
Researchers analyze seismic surface waves to determine Martian crust density and structure. The data reveals a uniform crust beneath the impact sites, contradicting earlier findings at the InSight lander.
Researchers have discovered that two seismic events detected by NASA's InSight lander were caused by meteor impacts, sending surface waves across the planet. These collisions provide valuable information about Mars' interior structure, with one study finding a denser crust than previously inferred.
A Finnish study found that retiring individuals experience an increase in sleep time and a corresponding decrease in physical activity. This shift is attributed to the absence of work-related activities and commute time, which are replaced by sedentary behavior.
Researchers developed an ultra-compact seismic source to continuously monitor carbon reservoirs, detecting CO2 leaks and changes that require attention. The Portable Active Seismic Source (PASS) technology can be deployed affordably and has potential applications in monitoring for disasters and imaging subsurface structures.
Seismologists have identified hundreds of thousands of microearthquakes along previously unknown fault structures in Oklahoma and Kansas, allowing them to map and measure earthquake clusters. The study found that nearly a 5% chance that a cluster would host a magnitude 4 or larger earthquake within a year if it reached a certain length...
A new study reveals two preserved slabs in the upper mantle beneath Myanmar, strongly supporting the double subduction model. The findings provide convincing geoscientific evidence to consolidate this model, which explains anomalously fast India-Asian convergence.
A new paper assesses hydraulic fracturing's impact on seismic hazards like microearthquakes. It found that preconditioning with hydraulic fracturing decreases the magnitude and frequency of induced tremors.