All articles tagged with #earthquakes
A Japanese study models the Earth’s crust and ionosphere as a coupled electric system to explore whether solar flares could subtly influence when a fault reaches rupture. The authors stress they are discussing timing, not energy, and acknowledge the idea is preliminary and contested by experts, with further validation planned.
Scientists studying Brzegi in southern Poland have identified an ancient seismic scar that reveals a previously unknown buried fault. Using airborne LiDAR, geophysical surveys, and paleoseismic trenching, researchers linked the visible fault scar to a deeper break that formed 10,000–50,000 years ago, suggesting the region’s earthquake history extends far beyond modern records and signaling a potential for rare, higher-magnitude quakes. The findings could lead to updated hazard assessments and mapping for the area.
A new study suggests that solar flares may perturb Earth’s ionosphere, altering electrostatic forces in the crust and potentially nudging faults toward earthquakes. The authors model the crust and ionosphere as connected like a leaky battery; critics say the approach is oversimplified and real geology could dampen any effect. Validation is challenging, though the researchers cite a 2024 Japan quake as possible support, emphasizing that correlation does not equal causation.
A new study links the drying of southern Tibet’s ancient lakes, including Nam Co, to earthquakes by unloading crustal weight and reactivating long-dormant faults. Using shoreline reconstructions and computer models, researchers estimate that water loss between about 115,000 and 30,000 years ago caused tens of meters of crustal rise near Nam Co (and even more near other lakes), potentially triggering fault slip. Published in Geophysical Research Letters, the work strengthens the idea that climate-driven surface changes can modulate, rather than cause, tectonic activity deep underground.
Multiple earthquakes, including a 4.2-magnitude quake, hit the Bay Area as Super Bowl LX week begins, with epicenters in San Ramon near Levi’s Stadium. No injuries or major damage reported, Bart delays noted, and Patriots and Seahawks players arrived in San Jose for events ahead of kickoff.
Morning earthquakes, including a 4.2 magnitude tremor near San Ramon, shook the San Francisco Bay Area as Super Bowl Week began, with several smaller quakes and no reports of significant damage or injuries.
Scientists using a dense seismometer network tracked ultra-small, low-frequency earthquakes offshore to map a five-piece fault system where the San Andreas fault meets the Cascadia subduction zone, including a deep Pioneer fragment from the Farallon plate, which helps explain the unusually shallow 1992 quake and challenges prior boundary models; the work, published in Science, improves understanding of seismic hazards in this complex region.
A Geophysical Research Letters study reports 362 previously unrecognized earthquakes linked mainly to Thwaites Glacier between 2010 and 2023, highlighting heightened fragility and urging a dedicated seismic network to monitor rapid glacial changes and potential global sea-level impacts.
A series of three earthquakes with magnitudes of 3.9, 2.8, and 3.0 struck San Ramon in the Bay Area on Saturday evening, felt in Oakland and San Francisco, but caused no injuries or damages. This follows a recent cluster of seismic activity in the area earlier in the week.
A new geological study reveals that the Indian Plate is tearing and warping beneath the Himalayas, providing insights into the region's earthquake patterns and mountain formation processes, with the plate's lower mantle peeling away and creating a dynamic, evolving landscape.
Scientists warn that California faces a significant risk from rare but powerful 'supershear' earthquakes that move faster than seismic waves, potentially causing more widespread and intense shaking. They emphasize the need for updated building standards, enhanced monitoring, and advanced simulations to better prepare for these destructive events, which could occur multiple times in the coming decades.
Scientists drilled into the Japan Trench to study the fault zone that caused the 2011 Tōhoku earthquake, collecting sediment cores to understand earthquake triggers and improve future hazard assessments, with ongoing monitoring to observe fault evolution over time.
Scientists warn that the Axial Seamount, an active underwater volcano near the US coast, is on the verge of erupting after experiencing 2,000 earthquakes in a day, with predictions suggesting an eruption could occur by the end of 2025, potentially impacting marine ecosystems but limited threat to human life.
Scientists have discovered that earthquakes generate energy-rich compounds through rock fracturing, supporting microbial life deep within Earth's crust without sunlight, and this process may also exist on other planets like Mars and Europa, expanding our understanding of life's resilience and potential extraterrestrial habitats.
Researchers using machine learning analyzed 15 years of seismic data beneath Yellowstone and uncovered over 86,000 earthquakes, ten times more than previously known, providing new insights into the volcanic activity and improving hazard prediction.