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1922 Shimabara earthquake

1922 Shimabara earthquake
1922 Shimabara earthquake is located in Kyushu
1922 Shimabara earthquake
1922 Shimabara earthquake is located in Japan
1922 Shimabara earthquake
UTC time1922-12-07 16:50:17
ISC event 
 912099
 912102
USGS-ANSS 
 ComCat
 ComCat
Local dateDecember 8, 1922 (1922-12-08)
MagnitudeM6.9
Epicenter32°42′N 130°06′E / 32.7°N 130.1°E / 32.7; 130.1[1]
TypeDoublet earthquake
Casualties27 dead[2][3]

The 1922 Shimabara earthquake (Japanese: 島原地震) occurred in Kyushu, Japan on December 8, 1922.[4] The mainshock (M6.9) was followed by a large aftershock (M6.5) 9 hours later.[5]

Overview

At 1:50 a.m. on December 8, 1922 (local time), an M6.9 earthquake occurred in Tachibana Bay [ja], Nagasaki Prefecture, Japan. About 9 hours later, at 11:02 a.m., the largest aftershock of M6.5 occurred in almost the same location as the first earthquake.

Type of event Date and time (JST) Epicenter Depth Magnitude
Main shock 1922/12/08 01:50 32°41.6′N 130°02.2′E / 32.6933°N 130.0367°E / 32.6933; 130.0367[6] 19 km M6.9
Largest aftershock 1922/12/08 11:02 32°45.1′N 130°07.5′E / 32.7517°N 130.1250°E / 32.7517; 130.1250[7] 0 km M6.5

Impact and damage

The damage was severe in southern Nagasaki Prefecture (Shimabara Peninsula) and western Kumamoto Prefecture.[1][2][8] In Nagasaki Prefecture, 26 people died of which 3 were due to the largest aftershock.[1] The earthquake caused cracks in the ground and landslides. More than 2,000 houses were damaged.[9][10][11]

See also

References

  1. ^ a b c 日本付近のおもな被害地震年代表 – Seismological Society of Japan
  2. ^ a b 19221208-1島原地震 長崎県
  3. ^ 雲仙・普賢岳災害と防災対策について – 一般社団法人 九州地方計画協会
  4. ^ 島原地震 (1922年12月8日) について – 長崎県地学会
  5. ^ "Earthquakes on the Shimabara Peninsula (December 8, 1922, M 6.9, M 6.5)". hp1039.jishin.go.jp. Headquarters for Earthquake Research Promotion. Retrieved 2024-03-17.
  6. ^ "震度データベース検索 (本震)". Japan Meteorological Agency. Retrieved 2024-03-13.
  7. ^ "震度データベース検索 (最大余震)". Japan Meteorological Agency. Retrieved 2024-03-13.
  8. ^ "島原半島の地震 (1922年12月8日)". hp1039.jishin.go.jp. Retrieved 2024-03-13.
  9. ^ "九州の災害履歴情報 年表から探す 長崎県". saigairireki.qscpua2.com. Retrieved 2024-03-13.
  10. ^ "雲仙岳 有史以降の火山活動". Japan Meteorological Agency. Retrieved 2024-03-13.
  11. ^ "長崎の安全と安心" (PDF).


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