地球惑星科学専攻 地球科学輻合部特別講演会
 
講演題名：
How Was the Moho Discovered?
 
講演者：
Hrvoje Tkalcic
(The Australian National University)
 
日時: 2011年1月17日(月) 11:00〜12:00
場所: 京都大学理学部1号館4階462号室
 
講演概要：
  At about the turn of the 20th century, a convincing description of Earth’s structure was
beyond even science fiction. Andrija Mohorovicic was a meteorologist and it is not
well understood what provoked him to turn his scientific career upside-down in his
mid forties, to embark on a relatively new and almost nonexistent scientific field -
seismology.
   Exactly one hundred years ago, an earthquake that occurred in Kupa Valley, Croatia,
led Mohorovicic to the discovery of the crust-mantle boundary, popularly known as
Moho. He determined crustal thickness through one of the first known inverse theory
applications using a drawing board and travel-time data from about dozen analog
seismographs operating in Europe at that time.
   Since then, changes in our paradigms about the Earth's crust and upper mantle have
been driven by results from seismological and other geophysical data. An
unprecedented recent global expansion of seismic instruments has resulted in
considerable progress in elucidating crustal structure and the depth of Moho. I will
briefly present results from recent studies with the emphasis on Moho from different
parts of the globe.
 
問い合わせ先：
久家慶子