Variations of b-values at the western edge of the Ryukyu Subduction Zone, north-east Taiwan

Jing Yi Lin, Jean Claude Sibuet, Shu Kun Hsu

研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)

摘要

Using earthquakes relocated in north-east Taiwan, we estimated b-value distribution along a cross-section located near the Ryukyu slab edge, and four b-value anomalous areas are evidenced: (1) a high b-value body lying on top of a low Vp, low Vs and high Vp/Vs sausage-like body was considered as a region of enhanced partial melt or water supply above which seismicity occurs; (2) beneath the Ilan Plain, an anomalous area characterized by b-values slightly higher than 1.1 might give evidence to the magma conduits to the Kueishantao Island; (3) above the Ryukyu Wadati-Benioff zone, at depths ranging from 90 to 110km, a high b-value anomaly might correspond to the depth where dehydration occurs in the subducting oceanic plate; and (4) a low b-value area located within the Ryukyu slab, at depths ranging from 70 to 90km, might be linked to the compressive mechanisms shown by focal mechanisms and the bending of the subducting plate.

原文???core.languages.en_GB???
頁(從 - 到)150-153
頁數4
期刊Terra Nova
20
發行號2
DOIs
出版狀態已出版 - 4月 2008

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