TY - GEN
T1 - Pillars of the mantle
T2 - 2017 Practice and Experience in Advanced Research Computing, PEARC 2017
AU - Pugmire, David
AU - Bozdaǧ, Ebru
AU - Lefebvre, Matthieu
AU - Tromp, Jeroen
AU - Komatitsch, Dmitri
AU - Peter, Daniel
AU - Podhorszki, Norbert
AU - Hill, Judith
N1 - Publisher Copyright:
© 2017 Copyright held by the owner/author(s).
PY - 2017/7/9
Y1 - 2017/7/9
N2 - In this work, we investigate global seismic tomographic models obtained by spectral-element simulations of seismic wave propagation and adjoint methods. Global crustal and mantle models are obtained based on an iterative conjugate-gradient type of optimization scheme. Forward and adjoint seismic wave propagation simulations, which result in synthetic seismic data to make measurements and data sensitivity kernels to compute gradient for model updates, respectively, are performed by the SPECFEM3D-GLOBE package [1] [2] at the Oak Ridge Leadership Computing Facility (OLCF) to study the structure of the Earth at unprecedented levels. Using advances in solver techniques that run on the GPUs on Titan at the OLCF, scientists are able to perform large-scale seismic inverse modeling and imaging. Using seismic data from global and regional networks from global CMT earthquakes, scientists are using SPECFEM3D-GLOBE to understand the structure of the mantle layer of the Earth. Visualization of the generated data sets provide an effective way to understand the computed wave perturbations which define the structure of mantle in the Earth.
AB - In this work, we investigate global seismic tomographic models obtained by spectral-element simulations of seismic wave propagation and adjoint methods. Global crustal and mantle models are obtained based on an iterative conjugate-gradient type of optimization scheme. Forward and adjoint seismic wave propagation simulations, which result in synthetic seismic data to make measurements and data sensitivity kernels to compute gradient for model updates, respectively, are performed by the SPECFEM3D-GLOBE package [1] [2] at the Oak Ridge Leadership Computing Facility (OLCF) to study the structure of the Earth at unprecedented levels. Using advances in solver techniques that run on the GPUs on Titan at the OLCF, scientists are able to perform large-scale seismic inverse modeling and imaging. Using seismic data from global and regional networks from global CMT earthquakes, scientists are using SPECFEM3D-GLOBE to understand the structure of the mantle layer of the Earth. Visualization of the generated data sets provide an effective way to understand the computed wave perturbations which define the structure of mantle in the Earth.
UR - http://www.scopus.com/inward/record.url?scp=85025820333&partnerID=8YFLogxK
U2 - 10.1145/3093338.3104170
DO - 10.1145/3093338.3104170
M3 - Conference contribution
AN - SCOPUS:85025820333
T3 - ACM International Conference Proceeding Series
BT - PEARC 2017 - Practice and Experience in Advanced Research Computing 2017
PB - Association for Computing Machinery
Y2 - 9 July 2017 through 13 July 2017
ER -