Seismic evidence for a 1000-km mantle discontinuity under the Pacific
Zhendong Zhang, Massachusetts Institute of Technology, Cambridge, MA, United States, Jessica C E Irving, University of Bristol, School of Earth Sciences, Bristol, BS8, United Kingdom, Frederik Simons, Princeton University, Department of Geosciences, Princeton, NJ, United States and Tariq Alkhalifah, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
