Collaborative Research: Crustal Accretion and Mantle Processes Along the Subduction-Influenced Eastern Lau Spreading Center

Lead PI: Dr. Spahr C. Webb , Dr. William H Menke
Unit Affiliation: Seismology, Geology and Tectonophysics, Lamont-Doherty Earth Observatory (LDEO)
September 2008 - August 2014
Inactive
Pacific Ocean
Project Type: Research

DESCRIPTION: Ambient seismic noise will be recorded over the Eastern Lau Spreading Center for 13 months and then analyzed for ambient noise cross correlation tomography, body wave tomography, surface wave phase velocities, body wave attenuation, and shear wave splitting.

OUTCOMES: 51 OBSs were recovered and the recorded seismic ambient noise has been partially processed. 3-D numerical modeling of previous results from the EPR has been modeled. Two one-time publications.

SPONSOR: National Science Foundation (NSF)
FUNDED AMOUNT: $420,462
WEBSITE: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0426369&HistoricalAwards=false
PUBLICATIONS: Yang Zha, Spahr C. Webb, S. Shawn Wei, Douglas A. Wiens, Donna K. Blackman, William Menke, Robert A. Dunn, and James A. Conder. "Upper mantle shear velocity structure along the Eastern Lau Spreading Center from OBS ambient noise tomography," Earth and Planet. Sci. Lett, v.408, 2014, p. 194. doi:doi.org/10.1016/j.epsl.2014.10.019 Zha, Yang, Spahr C. Webb, and William Menke. "Determining the orientations of ocean bottom seismometers using ambient noise correlation," Geophysical Research Letters, v.40, 2013, p. 3585. doi:doi:10.1002/grl.50698

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Earth fundamentals

Research Projects

Collaborative Research: Crustal Accretion and Mantle Processes Along the Subduction-Influenced Eastern Lau Spreading Center

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Keyword: tomography