Abstract
For two deep earthquakes, about 80 s before the abrupt onset of each, the hypocentral region begins to experience compression.
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Dziewonski, A., Gilbert, F. Temporal Variation of the Seismic Moment Tensor and the Evidence of Precursive Compression for Two Deep Earthquakes. Nature 247, 185–188 (1974). https://doi.org/10.1038/247185a0
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DOI: https://doi.org/10.1038/247185a0
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