Mishio Ishimoto (, September 17 1893 – February 4 1940) was a Japanese

seismologist Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other ...

doctor of Science Doctor of Science ( la, links=no, Scientiae Doctor), usually abbreviated Sc.D., D.Sc., S.D., or D.S., is an academic research degree awarded in a number of countries throughout the world. In some countries, "Doctor of Science" is the degree used f ...

. He was a professor at

Tokyo Imperial University , abbreviated as or UTokyo, is a public research university located in Bunkyō, Tokyo, Japan. Established in 1877, the university was the first Imperial University and is currently a Top Type university of the Top Global University Project by ...

. Mishio Ishimoto is from

Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and List of cities in Japan, largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, ...

. After graduating from the Department of Physics,

in 1917, he was the director of the Earthquake Research Institute. He studied such as consideration of the magma intrusion theory regarding the cause of earthquakes and the proposal of a push-cone shape regarding the

P-wave A P wave (primary wave or pressure wave) is one of the two main types of elastic body waves, called seismic waves in seismology. P waves travel faster than other seismic waves and hence are the first signal from an earthquake to arrive at an ...

initial distribution of

seismic waves A seismic wave is a wave of acoustic energy that travels through the Earth. It can result from an earthquake, volcanic eruption, magma movement, a large landslide, and a large man-made explosion that produces low-frequency acoustic energy. ...

, Relational expression between maximum amplitude of

ground motion Ground motion is the movement of the earth's surface from earthquakes or explosions. Ground motion is produced by seismic waves that are generated by sudden slip on a fault or sudden pressure at the explosive source and travel through the earth ...

and number of occurrences. He also invented Silica inclinometers etc. In 1933, he received the Imperial Academy Prize for his research on ground motion measurement.

References

{{DEFAULTSORT:Ishimoto, Mishio Japanese seismologists University of Tokyo alumni Academic staff of the University of Tokyo Scientists from Tokyo Recipients of the Order of the Sacred Treasure, 3rd class 1893 births 1940 deaths