Project Leader:
Dr. James Cochran
Earth Institute Contact: Dr. James Cochran
EI Collaborators:
Suzanne Carbotte
Maya Tolstoy
Locations: Indian Ocean
Special Locations:
Southeast Indian Ridge
Description:
This is a geophysical investigation of the dependence of melt supply on mantle temperature and the effects of the variation in melt supply along the Southeast Indian Ridge on the crustal accretion process. The investigation involves a seismic experiment including both refraction lines utilizing ocean-bottom hydrophones to determine variations in crustal thickness and upper mantle seismic velocity and multichannel seismic reflection surveys to determine the internal structure of the crust. Since the spreading rate and the mantle source both are nearly constant along this portion of the Southeast Indian Ridge, the along-axis variation in depth can reasonable be ascribed primarily to the effects of an along-axis variation in mantle temperature.
EI Unit:
Lamont-Doherty Earth Observatory (LDEO)
Cross Cutting Themes:
Climate and Society
Core Disciplines:
Earth Sciences
Funding Agency:
National Science Foundation
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