Newly Discovered Greenland Hot Rock Mantle Plume Drives Thermal Activities in the Arctic
A team of researchers understands more about the melting of the Greenland ice sheet. They discovered a flow of hot rocks, known as a mantle…
Seismology
NASA InSight Lander Takes Deep Mars Measurements: Seismograph Data Reveals Boundaries From Crust to Core
Using data from NASA’s InSight Lander on Mars, Rice University seismologists have made the first direct measurements of three subsurface boundaries from the crust to…
Drastic Reduction in Earth’s Seismic Background Noise Due to COVID-19 Lockdowns
Global COVID-19 “lockdown” measures — the quarantines, physical isolation, travel restrictions and widespread closures of services and industry that countries around the world have implemented…
Unexpected Widespread Structures Detected Near Earth’s Core – “A Totally New Perspective”
University of Maryland researchers conduct first simultaneous analysis of hundreds of earthquakes to identify echoes from features deep inside Earth. University of Maryland geophysicists analyzed…
New Fiber Optic Seismic Array in Pasadena Precisely Tracked the Rose Parade
New seismic array is sensitive enough to distinguish individual floats and bands. In November, Caltech and the City of Pasadena unveiled a new citywide fiber…
Devil’s Staircases: Timing of Large Earthquakes Follows Mathematical Pattern
At the regional level and worldwide, the occurrence of large shallow earthquakes appears to follow a mathematical pattern called the Devil’s Staircase, where clusters of…
Giant Seismic Network Created With Submarine Cables to Offshore Wind Farms
New technology could open the door to seafloor earthquake monitoring. An international team of geoscientists led by Caltech has used fiber optic communications cables stationed…
‘Marsquakes’ Could Reveal New Details on Martian Crust, Mantle and Core
Starting next year, scientists will get their first look deep below the surface of Mars. That’s when NASA will send the first robotic lander dedicated…
Scientists May Have to Reinterpret Seismic Maps of the Earth’s Interior
When an earthquake strikes, nearby seismometers pick up its vibrations in the form of seismic waves. In addition to revealing the epicenter of a quake,…
Fracking Wastewater Injection Wells Linked to Earthquakes
Scientists presented evidence tying the disposal of wastewater from shale gas hydrofracking to an increased occurrence of earthquakes. The scientists presented their findings at the…
Analysis of 2011 Virginia Earthquake Suggests Seismic Risk
Last year, the surprise 5.8-magnitude earthquake that struck central Virginia was actually worse than previously thought. Detailed analyses of the ground motions triggered by the…
Unusual Indian Ocean Earthquakes May Signal Tectonic Breakup
On April 11th 2012 a pair of massive earthquakes rocked the Indian Ocean. Scientists think that these may be the latest step in the formation…