Researchers report new understanding of deep earthquakes
July 30, 2018, University of Houston
Researchers have known for decades that deep earthquakes—those deeper than 60 kilometers, or about 37 miles below the Earth's surface—radiate seismic energy differently than those that originate closer to the surface. But a systematic approach to understanding why has been lacking.
Now a team of researchers from the University of Houston has reported a way to analyze seismic wave radiation patterns in deep earthquakes to suggest global deep earthquakes are in anisotropic rocks, something that had not previously been done. The rock anisotropy refers to differences in seismic wave propagation speeds when measured along different directions.
Read more at:
https://phys.org/news/2018-07-deep-earthquakes.html#jCp
