National Centre for Biosystematics, Natural History Museum, University of Oslo, NO-0318 Oslo, Norway, e-mail: [email protected]; Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, CZ-128 00 Prague, Czech Republic, e-mail: [email protected]; Institute of Botany, The Czech Academy of Sciences, Zámek 1, CZ-252 43 Průhonice, Czech Republic; Department of...

Mantle seismic structure beneath the United States spanning from the active western plate margin to the passive eastern margin was imaged with teleseismic P and S wave traveltime tomography including USArray data up to May 2014. To mitigate artifacts from crustal structure 5–40 s, Rayleigh wave phase velocities were used to create a 3-D starting model. Major features of the final P and Smodels ...