Seismogenesis of dual subduction beneath Kanto, central Japan controlled by fluid release.

ABSTRACT: Dual subduction represents an unusual case of subduction where one oceanic plate subducts on top of another, creating a highly complex tectonic setting. Because of the complex interaction between the two subducted plates, the origin of seismicity in such region is still not fully understood. Here we investigate the thermal structure of dual subduction beneath Kanto, central Japan formed as a consequence of a unique case of triple trench junction. Using high-resolution three-dimensional thermo-mechanical models tailored for the specific dual subduction settings beneath Kanto, we show that, compared with single-plate subduction systems, subduction of double slabs produces a strong variation of mantle flow, thermal and fluid release pattern that strongly controls the regional seismicity distr

SUBMITTER: Ji Y 

PROVIDER: S-EPMC5714997 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature