Home · Science · Sep 6 archive
Unusual Structures Identified at Earth's Core-Mantle Boundary with AI Help
Confirmed
In Short: Researchers have used machine learning to identify six mysterious structures deep within the Earth, potentially aiding in the prediction of seismic activity.
Researchers at the Chinese Academy of Sciences have identified six unusual structures at the core-mantle boundary using a machine learning algorithm, according to a new study published in the Journal of Geophysical Research: Solid Earth. The team analyzed over two million earthquakes from 1990 to 2024, focusing on 'PKP precursors,' mysterious seismic signals that arrive before the main event, to map these structures.
These structures, which are scattered across the interior of the globe, could be related to subduction zones, where material is dragged deep below the surface and chemically altered by extreme pressure and temperature, as suggested by the scientists. The data could help in understanding the formation of the Earth's layers and the movement of tectonic plates, which can lead to devastating events on the surface.
By identifying these structures, scientists hope to better predict the time and severity of future seismic activity. The study, which identified approximately 175,000 PKP signals, is about 10 times as many as previously identified in all previous studies combined. This significant increase in data could provide valuable insights into the deep processes within the Earth.
The researchers used a machine learning algorithm to automatically detect seismic phases, which offers a promising avenue for addressing the underutilization of available data. The algorithm not only independently verified multiple scattering regions associated with deep anomalies but also identified six new high-potential scattering targets. These findings could help in understanding the evolution of the Earth's innards at the core-mantle boundary and the influence on mantle plumes and subduction of tectonic plates.
Though much about these deep processes remains unknown, the identification of these structures could be a significant step in unraveling the mysteries surrounding the Earth's interior. By studying the scattering of seismic waves, scientists can gain a better understanding of the constant influx and outflow of material between the core and mantle, which can lead to earthquakes, tsunamis, volcanism, and other geological phenomena.
What's confirmed
What's still developing
- Launched September 24, 2025, IMAP will help researchers better understand the boundary of the heliosphere, a huge bubble created by the Sun surrounding and protecting our solar system.
- Launch Date May 21, 2010 Launch Site Tanegashima Space Center, Tanegashima, Japan Destination Venus Type Orbiter Status Successful–In Progress Nation… Launch Date Aug. 4, 1971 Launch Site Cape Canaveral, Florida, USA | Launch Complex 39A Destination Earth’s Moon Type Orbiter… Launch Date Apr. 24, 1972 Launch Site Cape Canaveral, Florida, USA | Launch Complex 39A Destination Earth’s Moon Type Orbiter… Aqua is a NASA Earth Science satellite mission that is collecting data about the Earth's water cycle.
- Launched July 23, 2025, TRACERS will study magnetic reconnection—when solar activity disrupts Earth’s magnetic field—to help scientists better understand and prepare for the effects of space weather.
- Arshad Khan bangs this into the pitch, on middle, Virat Kohli backs away, gets on top of the bounce and swats it wide of mid on for a boundary.
- 17.2: Arshad Khan to Virat Kohli, Back of a length and around off, Virat Kohli guides it away to deep third for a run.
- 17.1: Arshad Khan to Jitesh Sharma, Short of a length and on off, Jitesh Sharma runs it down to deep third for a single.
- The victims were identified as Arun Singh, 38, Sandeep Paleram, 32, and Chand, 42, who also goes by a single name.
- Then, they mapped the irregularities the models found, and discovered that the algorithm had identified 175,000 PKP precursor signals that would have been too faint to detect otherwise.