HR: 0800h
AN: V11B-1429    [Abstracts]
TI: Tornillos and Other Volcanic Tremors in Tatun Volcanoes, Northern Taiwan
AU: * Lin, C
EM: lin@earth.sinica.edu.tw
AF: Institute of Earth Sciences, Academia Sinica, P O Box 1-55, Nankang, Taipei, 115 Taiwan
AU: Konstantinou, K
EM: kostas@earth.sinica.edu.tw
AF: Institute of Earth Sciences, Academia Sinica, P O Box 1-55, Nankang, Taipei, 115 Taiwan
AU: Pu, S
AF: Institute of Geophysics, National Central University, Chungli, 320 Taiwan
AU: Huang, Y
AF: Dept. of Earth Sciences, National Taiwan Normal University, Taipei, 117 Taiwan
AU: Lin, Y
AF: Dept. of Earth Sciences, National Taiwan Normal University, Taipei, 117 Taiwan
AU: You, S
AF: Dept. of Earth Sciences, National Taiwan Normal University, Taipei, 117 Taiwan
AB: This is the first time to report several types of volcanic signals such as Tornillos (screws), harmonic signals (drops) and continuously short-period volcanic tremors at the Tatun volcanic group (Taiwan), which was usually considered as extinct because there was no any historical eruption. These volcanic signals are often reported in the active volcanoes in the earth. In particular, the tornillos have been considered as the potential precursor for volcanic eruption at Galeras volcano, Colombia. Combining all of these volcanic signals with the presviously geochemical analyses from the Helium isotop ratio, we strongly suggest that volcanic activities in the Tatun volcanic area might not be totally extinct yet and further investigations have to been done for evaluation of potential volcanic activities because the Tatun volcano group is not only just nearby two nuclear power plants but also about 15 km north to Taipei, the capital of Taiwan, in which more than seven million people live on.
DE: 8414 Eruption mechanisms
DE: 8419 Eruption monitoring (7280)
DE: 8439 Physics and chemistry of magma bodies
DE: 8135 Hydrothermal systems (8424)
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2004 AGU Fall Meeting