Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan.
Taiwan Volcano Observatory at Tatun, Taipei, Taiwan.
Sci Rep. 2016 Dec 23;6:39500. doi: 10.1038/srep39500.
There are more than 7 million people living near the Tatun volcano group in northern Taiwan. For the safety of the Taipei metropolis, in particular, it has been debated for decades whether or not these volcanoes are active. Here I show evidence of a deep magma reservoir beneath the Taipei metropolis from both S-wave shadows and P-wave delays. The reservoir is probably composed of either a thin magma layer overlay or many molten sills within thick partially molten rocks. Assuming that 40% of the reservoir is partially molten, its total volume could be approximately 350 km. The exact location and geometry of the magma reservoir will be obtained after dense seismic arrays are deployed in 2017-2020.
台湾北部大屯火山群附近生活着超过 700 万人。为了台北都会区的安全，几十年来一直在争论这些火山是否活跃。在这里，我从 S 波阴影和 P 波延迟两个方面展示了台北都会区下方存在一个深部岩浆库的证据。该储层可能由薄的岩浆层或厚的部分熔融岩石中的许多熔融岩席组成。假设储层的 40%是部分熔融的，那么其总容积约为 350 公里。在 2017 年至 2020 年部署密集地震阵列后，将获得岩浆储层的确切位置和几何形状。
