The source of the Deepest Earthquake ever detected was imaged by UA Geoscientists 467 miles beneath Japan's Bonin Islands
Oct. 27, 2021
Figure Caption: Deepest earthquake ever detected struck 467 miles beneath Japan's remote Ogasawara (Bonin) Islands, shown here.
On its October 25, 2021 Science News article National Geographic features the first ever detection of seismic activity that initiated in the Earth's lower mantle. The team led by University of Arizona Geoscientist E. Kiser used a 4D back projection method to image the source of a 2015 magnitude 7.9 earthquake and its aftershock sequence that took place beneath Japan's remote Ogasawara (Bonin) Islands. Their results provide new insights into the mechanisms that can produce earthquakes deep inside the Earth and appear in Geophysical Research Letters, https://doi.org/10.1029/2021GL093111, 2021.