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Earth Institute Research Projects

CSEDI Collaborative Research: Integrating Seismological, Rheological and Petrological Studies of Melt Production and Transport in Subduction Zones

Lead PI: Geoffrey A. Abers , Terry A. Plank , Dr. Ben Holtzman

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

September 2011 - August 2014
Inactive
Global ; Marianas Trench ; Nicaragua-Costa Rice subduction zone
Project Type: Research

DESCRIPTION: The team compared recent seismic imaging results from the Nicaragua-Costa Rica subduction zone with the Marinanas. Also re-revaluating and comparing laboratory measurements of physical properties at relevant conditions.

OUTCOMES: Presented first year results at the Fall 2011 AGU meeting, held an all-day "Q Summit", and demonstrated that seismic attenuation (1/Q) measurements are closely tied to thermal structure.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$217,124

RESEARCH TEAM:

Christine McCarthy

COLUMBIA UNIVERSITY COLLABORATORS:

Lamont Doherty Earth Observatory (LDEO), Geochemistry

EXTERNAL COLLABORATORS:

Washington University, Brown University, Boston University, University of Tokyo

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1067974&HistoricalAwards=false

PUBLICATIONS:

Abers, G. A., K. M. Fischer, G. Hirth, D. A. Wiens, T. Plank, B. K. Holtzman, C. McCarthy, and E. Gazel. "Reconciling mantle attenuation-temperature relationships from seismology, petrology and laboratory measurements," Geochem. Geophys. Geosys., v.15, 2014. doi:10.1002/2014GC005444

Bellis, C., and B. Holtzman. "Sensitivity of seismic measurements to frequency-dependent attenuation and upper mantle structure: An initial approach," J. Geophys. Res., v.119, 2014, p. 5497. doi:10.1002/2013JB010831

KEYWORDS

seismology subduction zones rheology petrology marianas trench seismology geology and tectonics

THEMES

Earth fundamentals