Foreshock
|
A small earthquake that occurs near the epicenter of a main shock before the main shock. It is difficult to recognize a foreshock before the main shock because there is no noticeable difference from other earthquakes. Even with large earthquakes, foreshocks are often not observed. Foreshocks often occur several hours to several days before the main shock, but can also occur several minutes or months before. (Professor Abe Katsumasa, University of Tokyo / 2007) Source : "Chiezo" published by Asahi Shimbun Publications Co., Ltd. About Chiezo |
|
本震の前に、本震の震源近くに発生する小さな地震。前震以外の地震と目立った違いがなく、本震の前に前震と認識することは困難。大地震でも、前震は観測されないことが多い。前震は、本震の数時間から数日前に起こることが多いが、数分前、数カ月前のこともある。
(阿部勝征 東京大学教授 ／ 2007年) 出典 (株)朝日新聞出版発行「知恵蔵」知恵蔵について 情報 |
<<: Quanzhen Sect - Zenshinkyo
Recommend
Lymph - Lymph axilla
Also called lymph. The fluid that flows through ly...
melancholic
...Western words such as temperament, which means...
Crushing trap - Crushing trap
…In contrast to active hunting methods using bows...
Homeostasis
This refers to the ability of an organism or a li...
Caste (biology) - kaasuto
...The word is generally taken to mean "inse...
China [town] - China
Oshima-gun, Kagoshima Prefecture, Oki-no-erabu Isl...
Gastric dilation - Ikakucho
When the stomach's muscular layer relaxes and...
parterre position (English)
... passive: a warning given to a passive wrestle...
Cerealia
…This temple later became a base of activity for ...
Jevons, William Stanley
Born: September 1, 1835, Liverpool [Died] August 1...
Iwaya Pond - Iwaki Pond
A pond that was built in the Ikenouchi area of S...
Five hundred arhats
500 arhats (arahans) are the object of worship. I...
Throat - Throat
It is a common term that cannot be clearly defined...
Abt type locomotive
…Depending on the type of engine they use, they c...
Morales, C.de (English spelling) MoralesCde
...The most important song composer of this perio...