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The asthenosphere (from Ancient Greek ἀσθενός (asthenós) 'without strength') is the mechanically weak [1] and ductile region of the upper mantle of Earth. It lies below the lithosphere , at a depth between c. 80 and 200 km (50 and 120 mi) below the surface, and extends as deep as 700 km (430 mi).
asthenosphere, zone of Earth’s mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere. The asthenosphere extends from about 100 km (60 miles) to about 700 km (450 miles) below Earth’s surface.
The meaning of ASTHENOSPHERE is a zone of a celestial body (such as the earth) which lies beneath the lithosphere and within which the material is believed to yield readily to persistent stresses.
The asthenosphere is a semi-fluid layer located in the upper part of the Earth’s mantle, situated beneath the lithosphere. It plays a crucial role in plate tectonics, as its partially molten and ductile nature allows for the movement of tectonic plates above it.
The upper part of the Earth's mantle, extending from a depth of about 75 km (46.5 mi) to about 200 km (124 mi). The asthenosphere lies beneath the lithosphere and consists of partially molten rock.
The asthenosphere (weak sphere) is a hotter, ductile, mechanically weaker layer beneath the lithosphere. It starts at the lithosphere-asthenosphere boundary (LAB) and goes to a depth of about 700 km (431 mi) below the surface.
The asthenosphere is the ductile layer situated beneath Earth ’ s rigid lithosphere. It was first named in 1914 by the British geologist Joseph Barrell, who divided Earth ’ s overall structure into three major sections: the lithosphere, or outer layer of rock-like material; the asthenosphere; and the centrosphere, or central part of the planet.
ASTHENOSPHERE definition: 1. the thin, almost liquid, layer under the hard rock that forms the outer layer of the earth: 2…. Learn more.
ASTHENOSPHERE meaning: 1. the thin, almost liquid, layer under the hard rock that forms the outer layer of the earth: 2…. Learn more.
Definition. The asthenosphere is a semi-fluid layer of the Earth's mantle located beneath the lithosphere, extending from about 100 to 700 kilometers below the Earth's surface.