The lithosphere-asthenosphere boundary is conventionally taken at the 1300 °C isotherm. ... Seismic waves pass relatively slowly through the asthenosphere compared to the overlying lithospheric mantle, thus it has been called the low-velocity zone (LVZ), although the two are not exactly the same.
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The lithosphere-asthenosphere boundary is conventionally taken at the 1300 °C isotherm. ... Seismic waves pass relatively slowly through the asthenosphere compared to the overlying lithospheric mantle, thus it has been called the low-velocity zone (LVZ), although the two are not exactly the same.