A First Motion Study looks at whether the very first movement of a P-wave on a seismogram is an “up” (compression) or “down” (dilatation). By mapping this across many stations, scientists can determine if the fault was a normal, reverse ...
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Earthquakes on the eastern margins of Asia (Japan, Kuril Islands, Philippines) are primarily caused by the subduction of the Pacific Plate beneath the Asian (Eurasian) Plate. As the heavy oceanic Pacific Plate sinks into the mantle, it creates a massive ...
Most of the world’s earthquakes (about 63–68%) occur in the Circum-Pacific belt, famously known as the “Ring of Fire.” This belt encircles the Pacific Ocean and is characterized by a continuous series of oceanic trenches, volcanic arcs and plate boundaries, ...