Seismic Waves
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Massive Continent-Sized Blobs Deep in Earth’s Mantle May Be Over a Billion Years Old
Massive mantle formations, called LLSVPs, have been found to be over a billion years old. These structures, sitting 3,000 km beneath the surface, slow seismic waves, indicating unique physical and compositional properties. Their stability suggests they influence Earth's geological processes, including volcanic activity and tectonic movements. Scien...
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Earth’s Inner Core Might Be Slowing Down and Changing Shape, New Study Reveals
Research suggests Earth’s inner core, a metal sphere within the molten outer core, is slowing its spin and reshaping. Seismic wave analyses from earthquakes reveal discrepancies indicating deformation on the core’s surface or changes in rotation. John Vidale, a geophysicist from the University of Southern California, presented these findings, s...
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Scientists Identify Seismic Trigger Before 2022 Tonga Eruption; Insight Could Improve Tsunami Warnings
A seismic wave recorded 15 minutes before the massive 2022 Tonga eruption could help scientists improve early-warning systems for remote oceanic volcanoes and mitigate tsunami risks. Researchers found that a rupture beneath the volcano’s caldera allowed seawater to mix with magma, triggering the eruption. This discovery may provide critical lead-...
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Scientists Unveil Doughnut-Shaped Structure Hidden In Earth's Outer Core
By analyzing seismic waves generated by large earthquakes, geophysicists identified a region where these waves slow down as they pass through the outer core.
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Study Reveals Ultra-Low Velocity Zones May Be More Common in Earth's Mantle Than Previously Thought
A new study published in AGU Advances has unveiled intriguing findings about ultra-low velocity zones (ULVZs) in Earth's mantle, suggesting these mysterious features might be more widespread than previously thought.ULVZs, which are known to dramatically slow seismic waves by up to 50%, have long been associated with volcanic hotspots such as Hawaii...
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Earth's Inner Core Has an Inner Core of Its Own: Study
Looking into the world's "deepest mystery" with the help of seismic waves, researchers have found that the Earth's inner core has an inner core of its own, which has surprising properties that could reveal information about our planet.
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Massive Continent-Sized Blobs Deep in Earth’s Mantle May Be Over a Billion Years Old
Massive mantle formations, called LLSVPs, have been found to be over a billion years old. These structures, sitting 3,000 km beneath the surface, slow seismic waves, indicating unique physical and compositional properties. Their stability suggests they influence Earth's geological processes, including volcanic activity and tectonic movements. Scien...
-
Earth’s Inner Core Might Be Slowing Down and Changing Shape, New Study Reveals
Research suggests Earth’s inner core, a metal sphere within the molten outer core, is slowing its spin and reshaping. Seismic wave analyses from earthquakes reveal discrepancies indicating deformation on the core’s surface or changes in rotation. John Vidale, a geophysicist from the University of Southern California, presented these findings, s...
-
Scientists Identify Seismic Trigger Before 2022 Tonga Eruption; Insight Could Improve Tsunami Warnings
A seismic wave recorded 15 minutes before the massive 2022 Tonga eruption could help scientists improve early-warning systems for remote oceanic volcanoes and mitigate tsunami risks. Researchers found that a rupture beneath the volcano’s caldera allowed seawater to mix with magma, triggering the eruption. This discovery may provide critical lead-...
-
Scientists Unveil Doughnut-Shaped Structure Hidden In Earth's Outer Core
By analyzing seismic waves generated by large earthquakes, geophysicists identified a region where these waves slow down as they pass through the outer core.
-
Study Reveals Ultra-Low Velocity Zones May Be More Common in Earth's Mantle Than Previously Thought
A new study published in AGU Advances has unveiled intriguing findings about ultra-low velocity zones (ULVZs) in Earth's mantle, suggesting these mysterious features might be more widespread than previously thought.ULVZs, which are known to dramatically slow seismic waves by up to 50%, have long been associated with volcanic hotspots such as Hawaii...
-
Earth's Inner Core Has an Inner Core of Its Own: Study
Looking into the world's "deepest mystery" with the help of seismic waves, researchers have found that the Earth's inner core has an inner core of its own, which has surprising properties that could reveal information about our planet.
