A mysterious seismic feature at the bottom of Earth’s mantle is more widespread than previously thought.
seismology
Posted inScience Updates
Earth Is Noisy. Why Should Its Data Be Silent?
Combining visual and sonic representations of data can make science more accessible and help reveal subtle details. The recent decade-long eruption of Hawaii’s Kīlauea Volcano offers a prime example.
Posted inEditors' Highlights
Are Low-Frequency Earthquakes Just Slow Slip?
Tests of seismic attenuation show fluid saturation and high pressure near a seismic source reduce high-frequency content, challenging the idea of slow slip as the cause of low-frequency earthquakes.
Posted inEditors' Highlights
Zooming in on the Nucleus of Earthquake Fault Slips
Controlled arrest and re-nucleation of laboratory earthquakes reveals nucleation processes unapproachable by traditional linear elastic fracture mechanics.
Posted inFeatures
A Common Language for Reporting Earthquake Intensities
Scientists are working together to establish a standardized international scale for measuring and reporting the intensities and impacts of earthquake shaking.
Posted inNews
Felt Reports Could Shake Up Earthquake Response
Firsthand accounts of earthquake impacts could aid in identifying people who require help as well as increasing safety in some areas.
Posted inEditors' Highlights
Delta Degradation Leads to Exacerbated Greenhouse Gas Emissions
Seismic ship surveys and seabed elevation maps of the Yangtze subaqueous delta reveal how the reduction of sediment supply to the coastal ocean can trigger increased greenhouse gas emissions.
Posted inEditors' Highlights
Radar Satellites Capture Subtle Slip Evolution on Faults
A five-year time series from radar satellite imagery tracks surface slip on major faults in the San Francisco Bay Area, capturing subtle velocity variations and controlling factors.
Posted inEditors' Highlights
4D Viscosity Constraints from Greenland
The mantle’s resistance to flow appears different for glacial and plate tectonic timescales but this behavior can be reconciled with new thermo-mechanical models of the asthenosphere.
Posted inResearch Spotlights
Mapping the Fizzy Brines and Fluid-Filled Fractures Below a Volcano
Seismic tools reveal where hydrothermal fluids lie beneath the Uturuncu volcano in Bolivia and hint at their composition.