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132 BCE
Seismoscope in China
In 132 BC, the first seismoscope was developed in China. -
David Milne, 5 May 1840
On the 5th of may 1840, a man named David Milne recommended that a machine could be developed to measure seismic action -
Robert Mallet, 27 March 1857
On the 27th of March 1857, an Irish engineer and scientist named Robert Mallet studied and developed theories about earthquakes. Mallet's work created some of the earliest theories about seismology. He thought that an earthquake moved outward from a central focus point. -
Grove Gilbert, 4th of May 1872
On the 4th of May 1872, Grove Gilbert discovered that earthquakes usually occur around a fault line. -
First Seismometer invested in Italy
In 1875 the first seismometer in Italy was invested, by Fillippo Cecchi. Fillippo Cecchi was an expert physicist and a capable creator of scientific instruments. -
Distant earthquake recorded for the first time
In 1889 the first distant earthquake was in Japan and the recording was in Germany. -
John Milne developed a Seismometer
In 1892 John Milne devoloped a Seismometer. The Seismometer was introduced in around 40 perceptions starting the worldwide earthquake observing . -
First seismograph installed in the U.S
On the 10th of February 1897, the first seismograph got installed in the U.S. It was installed near San Francisco at the Lick Observatory. -
The Mercalli Intensity Scale
Giuseppe Mercalli was a Seismologist. On the 12 of April 1906 he made a gadget to quantify the power or probability of harm that might be brought on by an earthquake. -
The San Francisco Earthquake.
On the 4th of December 1906, a major earthquake caused by San Andreas fault, that caused 3,000 deaths. It was the destruction of San Francisco. -
Harry Reid
On the 20th of December 1906, Harry Reid hypothesized that earthquakes were likely the consequence of the development of pressure along deficiencies. -
Richard Oldham discovered the earth's core
In 1906, Richard Oldham discovered the earth's core by studying seismic waves. -
Moho Boundary
on the 18th of December of 1909, a boundary between the earth's crust and mantle was discovered by Andrija Mohorovicic. -
The Moho discontinuity got discovered
In 1909 Andrija Mohorovicis discovered the Moho discontinuity. The moho discontinuity is the boundary between the Earth's crust and the Earth's Mantle. -
The magnitude Scale got developed
In 1935, the magnitude sale got developed by Charles Richter. -
The Richter Scale
On the 30th December 1935, Charles Richter created the first seismograph. He used the Richter scale to measure the magnitude of earthquakes. -
The Earth's Inner core got discovered.
In 1936, Inge Lehmann discovered the earth's inner core. -
Seismograph records a nuclear explosion
In 1946, a nuclear explosion was recorded by a seismograph. -
Earthquake in Chile
In 1960, the largest recorded earthquake was in Chile. -
Standardized Seismic Network
In 1961, the world wide Standardized Seismic Network was established. -
Keiiti Aki
In 1966, Keiiti Aki defined seismic moment. -
Seismoometer on the moon
In 1969, Apollo astronauts placed a seismometer on the moon -
Hiroo Kanamori
In 1977, Hiroo Kanamori established the moment magnitude scale. -
Nuclear Test Ban
In 1996, the comprehensive nuclear test ban, treaty is established.
