Definition, Meaning & Synonyms

low-velocity-zone

noun
/loʊ vəˈlɛsɪti zoʊn/
Definition
A region within the Earth’s mantle where seismic waves travel more slowly than in surrounding areas.
Examples
  • The low-velocity-zone beneath the oceanic crust suggests the presence of partially molten rock.
  • Scientists study the low-velocity-zone to understand tectonic movements better.
  • Data from the low-velocity-zone can help predict volcanic activity.
Meaning
The term refers to specific layers in the Earth’s interior that exhibit reduced seismic wave velocities, often indicating alterations in mineral composition or temperature.
Synonyms
  • seismic soft zone
  • low-wave-speed region
  • decelerated zone