STRUCTURE AT THE TOP AND BOTTOM OF THE MANTLE

Adam M. Dziewonski), Jeroen Tromp , and Xian-feng Liu

(Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138-2902, e-mail liu@seismology.harvard.edu)

This paper is published in the book Monitoring a Comprehensive Test Ban Treaty, 521-550, 1996 Kluwer Academic Publishers. It describes two new models S20/U7L5 and SKS12/WM13 studied by Harvard. You can request a reprint by contacting Professor Dziewonski or Ekstrom .