NTW-Pj-H21

A dense broadband seismic array (Formosa Array) of 140 stations was deployed with a station spacing about 5 km uniformly across the northern Taiwan for better imaging the Tatun volcano plumbing structure. A 3D joint inversion combing the teleseismic waveform data from the Formosa Array and the local P-wave picking data from an integrated seismic network is performed. The new model unveils a clear magma reservoir beneath the east of the Tatun volcano and possible magmatic intrusion/underplating bodies related to post-collisional extension in northern Taiwan.

Figure: P-wave velocity structure of northern Taiwan shown in map view at different depths from shallow to deep (left) and in a cross-sectional animation (right) showing a pronounced low velocity anomaly beneath the Tatun volcano indicated as the magma reservoir.

Model download

• 3-D Vp joint inversion model

Citation

• Huang, H.-H.*, E.-S. Wu, C.-H. Lin, J. Y. Ko, M.-H. Shih, and I. Koulakov (2021), Unveiling Tatun volcanic plumbing structure induced by post-collisional extension of Taiwan mountain belt, Sci. Rep., 11: 5286, https://doi.org/10.1038/s41598-021-84763-z.