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  • Period: to

    The history of Seismology

  • The beginning studies

    The beginning studies
    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.
  • Furthering the hypothesis

    Furthering the hypothesis
    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.
  • Instruments for measuring seismic activity

    Instruments for measuring seismic activity
    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.
  • Observations made by instruments

    Observations made by instruments
    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.
  • Earth's Structure

    Earth's Structure
    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.
  • International Data Center

    International Data Center
    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.
  • Sites Used

    Chap01 1. - University of California, San Diego.
    History of Seismology - CSUN.