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Definition of Asthenosphere

Babylon English

one of the layers of the interior of the Earth, upper part of the Earth's mantle
Asthenosphere Definition from Language, Idioms & Slang Dictionaries & Glossaries
WordNet 2.0

1. the lower layer of the crust
(hypernym) layer
(part-holonym) crust, Earth's crust
Asthenosphere Definition from Religion & Spirituality Dictionaries & Glossaries
Webart Magic Astronomical Glossary
In a planetary body, a subsurface layer that is more plastic than adjacent layers because the combination of pressure and temperature places it near (or slightly above) the melting point. Asthenospheric movements may disrupt the planet's surface.
Asthenosphere Definition from Entertainment & Music Dictionaries & Glossaries
English to Federation-Standard Golic Vulcan
Asthenosphere Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
The zone inside the earth beneath the Lithosphere constituting the source of Igneous rock (Magma).
Asthenosphere Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
The asthenosphere (from Greek ἀσθενής asthenḗs 'weak' + "sphere") is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth. It lies below the lithosphere, at depths between approximately below the surface. The Lithosphere-Asthenosphere boundary is usually referred to as LAB. The asthenosphere is generally solid, although some of its regions could be melted (e.g., below mid-ocean ridges). The lower boundary of the asthenosphere is not well defined. The thickness of the asthenosphere depends mainly on the temperature. In some regions the asthenosphere could extend as deep as . It is considered the source region of mid-ocean ridge basalt (MORB).

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