The line connecting places in a region where an earthquake is experienced at the same time is technically called a Coseismal line. It maps the “arrival time” of seismic waves. However, in many contexts, the isoseismal line is used to ...
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The earthquake focus is technically defined as the point within the Earth’s lithosphere where the stored elastic strain energy is first converted into seismic energy. It is the location of the initial break along a fault plane. From this point, ...