The number of earthquakes generally decreases with depth, aside from a resurgence in seismicity shown by the peak at 450-650 kilometers (280-400 miles) depth. Credit: Shirey et al., AGU Advances, 2021, CC BY 4.0

The number of earthquakes generally decreases with depth, aside from a resurgence in seismicity shown by the peak at 450-650 kilometers (280-400 miles) depth. Credit: Shirey et al., AGU Advances, 2021, CC BY 4.0

The number of earthquakes generally decreases with depth, aside from a resurgence in seismicity shown by the peak at 450-650 kilometers (280-400 miles) depth. Credit: Shirey et al., AGU Advances, 2021, CC BY 4.0

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