YEN-TING KOHelmberger, Don V.Don V.HelmbergerWang, HuilinHuilinWangZhan, ZhongwenZhongwenZhan2019-06-192019-06-192017-10-2800948276https://scholars.lib.ntu.edu.tw/handle/123456789/411212©2017. American Geophysical Union. All Rights Reserved. The morphologies of subducted remnants in the lower mantle are essential to our understanding of the history of plate tectonism. Here we image a high-velocity slab-like (HVSL) anomaly beneath the southeastern U.S. using waveforms from five deep earthquakes beneath South America recorded by the USArray. In addition to travel time anomalies, the multipathing of S and ScS phases at different distances are used to constrain the HVSL model. We jointly invert S and ScS traveltimes, amplitudes, and waveform complexities to produce a best fitting block model characterized by a rectangular shape with a 2.5% S wave velocity increase and tapered edges. While the Farallon slab is expected to dip primarily eastward, the HVSL structure apparently dips 40° to 50° to the SE and appears to be related to the eclogitized Hess conjugate.Farallon Plate | Hess conjugate | multipathing | waveform modelingjournal article10.1002/2017GL0750322-s2.0-85031760363WOS:000416761600016https://api.elsevier.com/content/abstract/scopus_id/85031760363