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There were a lot who were claimed to have discovered and invented Seismology and I will talk about them as we go.

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Seismology is the branch of science studying earthquakes.

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In 1755, an earthquake called The Lisbon earthquake made John Mitchell determine that earthquakes originate within the Earth and were waves of movement caused by "shifting masses of rock miles below the surface."

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In 1857, Robert Mallet said to have laid the foundation of instrumental seismology. He also carried out seismological experiments using explosives.

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In 1897, Emil Wiechert's calculations(theoretical) led him to a conclusion that the Earth's interior consists of a mantle of silicates, surrounding a core of iron.

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In 1906, Richard Dixon Oldham identified the separate arrival of P-waves, S-waves, and Surface waves on seismographs and found the first ever clear evidence that the Earth has a central core.

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In 1909, one of the founders of modern seismology, Andrija Mohorovičić, discovered and defined the Moho discontinuity.

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The Moho discontinuity or the Moho is the boundary between the Earth's crust and the mantle, defined by the change in velocity of seismological waves as they pass through changing densities of rock.

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In 1926, Harold Jeffreys was the first to claim that below the mantle, the core of the Earth is liquid.

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In 1937, Inge Lehmann determined that within Earth's liquid outer core there is a solid inner core.

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BY the 1960s, a now well-established theory of plate tectonics has been developed.