Title

Seafloor Asymmetry in the Atlantic Ocean

Abstract

Measurements of seafloor asymmetry at about 360000 pairs of conjugate points along 1250 profiles across the mid-Atlantic Ridge (MAR) provide new constraints on models for the upwelling of the buoyant asthenosphere. The sign and amplitude of the asymmetry vary systematically and are functions of the distance between the spreading center and the location of the inferred location of maximum regional buoyancy (LMRB) in the asthenosphere. The LMRB is a smooth line derived from the observed asymmetry and is more centered at the regional topographic high than the spreading center. These observations are best explained by active upwelling of the underlying buoyant asthenosphere rather than by pressure-release melting.

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Atlantic Ocean; Mid-Ocean Ridges; Seafloor Asymmetry; Seafloor Topography

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Springer Verlag, All rights reserved.

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