Making sense of commotion under the ocean to locate tremors near deep-sea faults

Researchers from Japan and Indonesia have pioneered a new method for more accurately estimating the source of weak ground vibrations in areas where one tectonic plate is sliding under another in the sea. Applying the approach to Japan’s Nankai Trough, the researchers were able to estimate previously unknown properties in the region, demonstrating the method’s promise to help probe properties needed for better monitoring and understanding larger earthquakes along this and other plate interfaces.
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