Question

why is the asthenosphere called low velocity zone?​

Answer 1

Answer:

The low - velocity zone ( LVZ) occurs close to the boundary between the lithosphere and the asthenosphere in the upper mantle . it is characterized by unusually low seismic shear wave velocity compared to the surrounding Depth intervals . This range of Depths also corresponding to anomalously high electrical conductivity .

Answer 2

Answer:

The asthenosphere is also known as the "low velocity" zone of the mantle because seismic waves slow down as they pass through it. This property tells us that the asthenosphere is composed of partially molten rock slushlike material consisting of solid particles with liquid occupying spaces in between.