Publication Type:
Year of Publication:
2001
Journal Title:
Science
Journal Date:
Aug 31
Volume:
293
Issue:
5535
Pages:
1645-1647
ISBN Number:
0036-8075
Accession Number:
ISI:000170802900059
Key Words:
Abstract:
Volcanic hotspots and mid-ocean ridge spreading centers are the surface expressions of upwelling in Earth's mantle convection system, and their interaction provides unique information on upwelling dynamics. I investigated the influence of the Iceland hotspot on the adjacent mid-Atlantic spreading center using phase-delay times of seismic surface waves, which show anomalous polarization anisotropy-a delay-time discrepancy between waves with different polarizations. This anisotropy implies that the hotspot induces buoyancy-driven upwelling in the mantle beneath the ridge.
Notes:
469FATimes Cited:25Cited References Count:32