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In ancient Grece the attributed earthquakes to the wrath of the gods. In the 18th century science was more prevalent, J. Drijhout in 1775 suggested that the motion was produced elsewhere; like a ripple. This theory stemmed from the Libson earthquake of 1775. -
Robert Mallet was an Irish geologist who theorized that the quakes came from steam caused by water interacting with hot rocks. He attempted to measure seismic velocities with explosive means. -
There were many instruments in the time of 1856-1875. Three British men working in Japan named Milne, Ewing, and Gray. They created the first modern seismometer in 1880-1885. -
Richard Oldham recorded S, P, and surface waves using a seismogram. In 1906 using the aforementioned seismometer he confirmed the existence of Earth's core. -
Geologists H. Jeffrey and K. Bullen created the Jeffrey-Bullen seismological table. They made the table by using large amounts of data, the data collected created a better inner Earth model and epicenter locations. -
The International Data Center is based in Vienna and is used to record worldwide seismic phenomena. This center was made in 1996 and is still functioning today. -
Chap01 1. - University of California, San Diego. https://igppweb.ucsd.edu/~agnew/Pubs/agnew.a66.pdf
History of Seismology - CSUN. https://www.csun.edu/~dsw/intro_history_seismo.ppt