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Fault detected near epicenter of Mt.Datun quake (2014/02/14)

Following Wednesday morning’s earthquake geologists have discovered a previously undocumented fault. The fault is close to the epicenter of the quake and thought to be related to the quake. seismic

Just after midnight on Wednesday, Shilin experienced a magnitude 4.0 earthquake. After two days of studying data from a Mt.Datun seismic station, a new fault was found 100 meters away from the epicenter.

Lin Cheng-horng
Taiwan Volcano Observatory, Datun
A dislocation of underground rock formations produces a vibration, with shock waves spreading to the surface. Our seismic stations recorded this signal. We believe it originated from a normal fault.

Frequent activity within the Datun volcano group, along with the discovery of the new fault, has led experts to urge extra caution.

Lin Cheng-horng
Taiwan Volcano Observatory, Datun
From monitoring many volcanic regions around the world, we have found that it is unlikely to accumulate enough energy to produce a big earthquake. In other words, earthquakes above magnitude 7 are rare in volcanic areas. But there are frequent earthquakes, so you shouldn’t build schools or houses here.

Two schools are already in the area: Pingdeng and Datun elementary.

大屯新斷層

周 三凌晨，台北市發生26年來最大地震，震撼大台北600萬居民。距離震央最近的大屯火山觀測站，更有驚人發現！專家在震央附近100公尺處，找到一個過去 沒被發現的正斷層，還剛好跟震央深度一致，因此研判跟這次地震很有關聯！專家警告，火山區的斷層帶有機會出現最強規模七的強震，最好不要興建房屋，學校等 建築物！

12號凌晨，台北市士林發生規模4.0地震，位在震央附近的大屯山火山觀測站，專家在調查兩天後，發現一個離震央附近100公尺處，從沒記載在文獻上的，正斷層，認為與地震很有關聯。

[[大屯山火山觀測站主持人 林正洪]]
“地底下的岩層如果有錯動，它就會產生震動，震動就會透過地震波傳到地表，我們地表監測站就會偵測到這些訊號，看波的特性，們可以去估算出來，它是一個正斷層”

由於位於大屯火山群，地底活動頻繁，又發現新斷層，更要格外小心！

[[大屯山火山觀測站主持人 林正洪]]
“全世界的監測在火山地區，不太可能累積太大的能量，來產生大的地震，意思說像規模7以上地震，在火山地區是很少很少見的，地震都會有持續性有，在上面當然不能蓋建築物學校房子”

專家警告，不要在斷層上，興建學校等大型建築物，大屯山上平等國小，大屯國小，都被點名。