Person的網路日誌

遠在地球另一邊的南美洲國家秘魯發生了大地震，據新聞報導死傷相當嚴重，從下面這張USGS所製作的ShakeMap可以清楚的看到地動分佈的情形，黃色以上就是代表"搖的"很厲害，可以看到範圍相當廣。

根據美國地質調查所所公佈的資訊，地震規模高達8，這種規模的地震平均一年全球才一個。而這次的地震震源深度為39公里，算是一個不算太淺的地震，但是規模實在太大了，所以連很遠的地方也可以感受到震度。
這邊會發生這麼大的地震其實也不意外，因為這邊是板塊隱沒的邊界( Nazca and South American 板塊)，Nazca板塊以低角度隱沒到South American板塊之下，這次的地震是因為South American板塊"回彈"所引起的，從震源機制上看來是個低角度的逆衝斷層。

USGS的網站上有詳細的說明:「This earthquake occurred at the boundary between the Nazca and South American tectonic plates. The two plates are converging at a rate of 78 mm per year. The earthquake occurred as thrust-faulting on the interface between the two plates, with the South American plate moving up and seaward over the Nazca plate. Coastal Peru has a history of very large earthquakes. The August 15 shock originated near the source of two earthquakes, both in the magnitude 8 range, that occurred in 1908 and 1974. This earthquake is south of the source of a magnitude 8.1 earthquake that occurred in northern Peru in 1966 and it is north of the magnitude 8.4 earthquake that occurred in 2001 near Arequipa, Peru. The largest earthquake along the coast of Peru is the magnitude 9 that occurred in 1868. The 1868 earthquake produced a tsunami that killed several thousand people along the South American coast and also caused damage in Hawaii.」
請原諒我懶得翻譯成中文...看原文比較清楚啦