| 翻訳と辞書 |
| 1916 Irondale earthquake ： ウィキペディア英語版 |
1916 Irondale earthquake
The 1916 Irondale earthquake struck north–central Alabama on October 18. The greatest earthquake in state history, it registered an estimated magnitude of 5.1 on the Richter scale and resulted in extensive minor damage. Damage, limited to Shelby and Jefferson counties, reached its maximum severity near the epicenter in the city of Irondale, including cracked windows, fallen chimneys, and dried-up wells. While there were no fatalities, the earthquake spawned widespread panic, sending alarmed workers from tall buildings.
The earthquake originated in the Eastern Tennessee Seismic Zone, a fault noted for earthquakes of moderate magnitude. Faulting in the area is strike-slip-oriented probably because of the Alabama-New York Lineament, which runs adjacent to the fault. Several scientists believe that the small earthquakes from the zone highlight the reactivation of deep, ancient faults. Alabama has seen roughly 20 earthquakes since the beginning of the 20th century. The earthquakes have been moderate, never reaching above magnitude 5.1, and tend to cause damage only near their epicenters while reaching areas much further away. Major events include those in 1916, 1997, and 2003. Despite the lack of powerful seismic events in Alabama, earthquakes from nearby fault zones, including the New Madrid Seismic Zone, pose a serious threat to infrastructure. Even an earthquake similar in size to the 1916 Irondale event today could damage thousands of buildings and cause up to $1 billion in damage.〔
==Background==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「1916 Irondale earthquake」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|