Assam earthquake

Japanese: アッサム地震 - あっさむじしん
Assam earthquake

Earthquakes occur frequently in the Assam region of India. In neighboring China, they are called Xizang earthquakes (Tibetan earthquakes). Many earthquakes occur around the Himalayas, where the Indian and Asian continents collide. The epicenters are concentrated in the Himalayan mountain range and its two flanks, and along with deep earthquakes in the Hindu Kush on the western flank, huge earthquakes such as the earthquake on June 12, 1897 occur frequently in the Assam region on the eastern flank. It is said that during this earthquake, many large and small stones flew up without leaving any marks on the ground, and the acceleration associated with the earthquake is thought to have been so great that it exceeded the acceleration of gravity. The earthquake on August 15, 1950, with a magnitude of 8.6, was a major earthquake comparable to the Chilean earthquake of 1960 and the Alaskan earthquake of 1964, and shook an area of ​​3 million square kilometers not only in India and Tibet but also in neighboring countries. The epicenter was 50 kilometers deep, and roads, railways, bridges, buildings, etc. were destroyed, there were many landslides, and about 4,000 people were killed.

[Hiroshi Wakita]

[References] | Assam | Alaska earthquake | Earthquake | Landslide | Deep-focus earthquake | Chile earthquake | Hindu Kush mountain range

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

インドのアッサム地方に多発する地震。隣接する中国では西蔵地震(チベットじしん)とよばれる。インド大陸とアジア大陸とが衝突するヒマラヤ周辺には多くの地震が発生する。その震央分布は、ヒマラヤ連峰とその両翼部に集中し、西翼部のヒンドゥー・クシの深発地震とともに、東翼部のアッサム地方には、1897年6月12日の地震に代表される巨大地震が多発する。この地震の際、大小たくさんの石が、地面に擦り跡を残さずに飛び上がったといわれており、地震に伴う加速度は重力加速度を超えるほど大きかったと考えられている。また、1950年8月15日の地震はマグニチュード(M)8.6で、1960年のチリ地震、1964年のアラスカ地震と並ぶ大地震で、インド、チベットのみならず近隣諸国300万平方キロメートルに及ぶ地域を震撼(しんかん)させた。震源は深さ50キロメートルで、道路、鉄道、橋、建物などが破壊され、地すべりなどの被害が多く、約4000人もの死者があった。

[脇田 宏]

[参照項目] | アッサム | アラスカ地震 | 地震 | 地すべり | 深発地震 | チリ地震 | ヒンドゥー・クシ山脈

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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