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Earth Institute Research Projects

Collaborative Research: Variations in Upper-mantle Temperature, Deformation, and Melting Inferred from the Seismic Structure of the Atlantic Basin

Lead PI: James Gaherty

Unit Affiliation: Seismology, Geology & Tectonophysics, Lamont-Doherty Earth Observatory (LDEO)

April 2009 - March 2013
Inactive
Atlantic Ocean
Project Type: Research

DESCRIPTION: Using seismic data with Atlantic-crossing paths the team will attempt to develop a whole-basin Atlantic seismic model. Data will be collected from global and regional broadband networks to measure frequency-dependent phase and amplitude of fundamental and higher mode surface waves using the generalized seismological data functional methodology. Elastic and inelastic models will also be determined rom inversion of phase and amplitude anomalies.

OUTCOMES: A data set of many hundred paths has been collected, measured frequency dependent phase delays, and implemented a systematic process to correct observations for bathymetry.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$120,000

EXTERNAL COLLABORATORS:

Boston University

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0838225&HistoricalAwards=false

PUBLICATIONS:

Raymond, E.K., C.A. Dalton, and J.B. Gaherty. "Investigating the Seismic Structure of the Atlantic Upper Mantle with Surface Waves", 04/01/2011-03/31/2012, "Abstract S51-2237 presented at 2011 Fall Meeting", 2012, "American Geophysical Union".

KEYWORDS

seismological data elastic models seismic anisotropy seismic model surface waves inelastic models seismic velocity seismic attenuation

THEMES

Earth fundamentals