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For decades, scientists have probed Earth's remote mantle by analyzing how seismic waves of distant earthquakes pass through it. But we are still challenged by the technique's limitations.
Gillian R. Foulger, Giuliano F. Panza, Irina M. Artemieva, Ian D. Bastow, Fabio Cammarano, Carlo Doglioni, John R. Evans, Warren B. Hamilton, Bruce R. Julian, Michele Lustrino, Hans Thybo, Tatiana Yanovskaya