Non-spherical surface wave amplitude radiation patterns identified from spectral ratios of the 2016 and 2013 DPRK nuclear tests

Gene A Ichinose1, Sean Ricardo Ford1, Steve Myers2, Dr. Michael Pasyanos, Ph.D.1 and William R Walter2, (1)Lawrence Livermore National Laboratory, Livermore, CA, United States, (2)Lawrence Livermore National Laboratory, Livermore, United States