TAIPEI BASE: Scientists have proven the existence of magma chambers under Datunshan in Yangmingshan National Park by evaluating seismic wave movements
Taipei Times
Date: May 30, 2019
By: Lin Chia-nan / Staff reporter
Volcanic activity detected beneath Turtle Island (Gueishan Island, 龜山島) and the Datun
A fumarole at Dayoukeng on Datunshan in Taipei’s Yangmingshan National Park emits smoke yesterday.
Photo: Lu Chun-wei, Taipei Times
Volcano Group (大屯山火山群) prove that they are active groups, Taiwan Volcano Observatory Director Lin Cheng-horng (林正洪), who is also an earth science researcher at Academia Sinica, said yesterday.
An active volcano is defined as having a magma reservoir or having erupted in the past 10,000 years, Lin said as he told a news conference about his team’s research over the past decade at the observatory on Datunshan (大屯山) in Taipei’s Yangmingshan National Park.
Almost no geologists in Taiwan thought the volcano group might be active about 15 years ago, as earlier studies had suggested its latest eruption might have occurred about 100,000 years ago, he said.
However, his team has documented the existence of magma chambers beneath Datunshan through the variations in primary waves (P waves) and secondary waves (S waves) of earthquakes since the observatory was set up in 2011, he said.
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