TOMOGRAPHIC IMAGING OF SUBDUCTED LITHOSPHERE BELOW NORTHWEST PACIFIC ISLAND ARCS

Article

关键词: WAVE TRAVEL TIME;    3-DIMENSIONAL SEISMIC STRUCTURE;    LOWER MANTLE BENEATH;    HIGH-VELOCITY ZONE;    SLAB PENETRATION;    LATERAL HETEROGENEITY;    JAPAN ISLANDS;    DEEP;    DISCONTINUITY;    EARTHQUAKES;   

DOI  :  10.1038/353037a0

来源: SCIE

【 摘 要 】

The seismic tomography problem does not have a unique solution, and published tomographic images have been equivocal with regard to the deep structure of subducting slabs. An improved tomographic method, using a more realistic background Earth model and surface-reflected as well as direct seismic phases, shows that slabs beneath the Japan and Izu Bonin island arcs are deflected at the boundary between upper and lower mantle, whereas those beneath the northern Kuril and Mariana arcs sink into the lower mantle.

【 授权许可】

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