The History of Seismology

Timeline created by tiffanybabb in History

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Event Date:	Event Title:	Event Description:
05/05/1840	David Milne	Milne suggested that a machine could be invented to measure seismic activity.
03/27/1857	Mallet's Theories	Mallet, an Irish engineer and scientist, studied and developed theories about earthquakes. He thought that an earthquake moved outward from a central focal point.
05/04/1872	Grove Gilbert	Grove Gilbert discovered that earthquakes usually center around a fault line.
02/10/1897	First U.S.Seismograph	The first seismograph was installed in the U.S, near San Fransisco at the Lick Observatory.
04/12/1906	The Mercalli Intensity Scale	Giuseppe Mercalli was a seismologist who created a device to measure the intensity or likelihood of damage that may be caused by an earthquake.
12/04/1906	The San Fransisco Earthquake	A major earthquake caused by the San Andreas Fault that resulted in 3,000 deaths and destruction of San Fransisco.
12/20/1906	Harry Reid	Harry Reid hypothesized that earthquakes were likely the result of the build-up of pressure along faults.
12/18/1909	Moho Boundary	A boundary between the earth's crust and mantle was discovered by Andrija Mohorovii.
09/30/1935	The Richter Scale	Charles Richter created the first seismograph. He used the Richter Scale to measure the magnitude of earthquakes.