Lower Mantle

Aug 17, 2018

The core-mantle boundary (CMB) is one of the most important interfaces in the Earth’s interior and plays a key role in the geodynamical evolution of the planet. Many studies have reported existence of ultra-low velocity zones (ULVZs) at the CMB, which are characterized by zones of variable thickness of ∼5–50 km with negative P and S velocity perturbations of 10% or greater. Mapping the geographic presence of ULVZs and their relationship to the surrounding velocity structure would place important constraints on the origin of ULVZs, dynamical and chemical evolution of the Earth’s mantle and origin of the hotspots.

ULVZ beneath SEAsia
Seismic structure and ultra-low velocity zones at the base of the Earth’s mantle beneath Southeast Asia.
Lower Mantle
Yao Jiayuan
Yao Jiayuan
Associate Professor

Publications

Yao Jiayuan, Lianxing Wen (2014). Seismic structure and ultra-low velocity zones at the base of the Earth’s mantle beneath Southeast Asia. Physics of the Earth and Planetary Interiors.

Project DOI