3,000 km beneath our feet: Scientists discover six mysterious structures

Scientists have discovered six massive underground structures at a depth of about 3,000 km, on the boundary between Earth's core and mantle. The discovery was made possible through AI analysis of over two million seismic records collected since 1990. Researchers estimate these are remnants that could change our understanding of Earth's geological history.

A new study published recently reveals the existence of six massive underground structures located nearly 3,000 kilometers below the surface, in the area where the planet's core meets the mantle layer. The discovery was made possible thanks to the integration of advanced artificial intelligence systems that analyzed over two million seismic records collected worldwide since 1990. For decades, scientists knew that the region where Earth's mantle meets its core is critical to the planet's dynamic activity, but the signals coming from there were weak, difficult to detect, and controversial. The breakthrough came when a research team decided to use deep AI to go through a vast database of seismic data. The AI system was trained to detect faint signals called "PKP precursors" – signals generated by strong earthquakes that cross Earth's layers. The algorithm identified nearly 175,000 relevant signals. The analysis led to the identification of six key areas where seismic signals scatter with great intensity. These findings suggest that the anomalies at the bottom of the mantle are not isolated but consist of broad systems and massive structures that may be remnants of an ancient magma ocean, sunken tectonic plate fragments, or local melting zones.