University of Southern California
Jun 2017 - Aug 2018
Dec 2016 - May 2017
Sep 2015 - Jul 2017
Sep 2015 - Nov 2016
Small, Patrick and Gill, David and Maechling, Philip J. and Taborda, Ricardo and Callaghan, Scott and Jordan, Thomas H. and Olsen, Kim B. and Ely, Geoffrey P. and Goulet, Christine (2017): The SCEC Unified Community Velocity Model Software Framework, Seismological Research Letters, GeoScienceWorld, Vol 88, Num 5
D. Roten, Y. Cui, K. Olsen, S. Day, K. Withers, W. Savran, and P. Wang (2016): High-Frequency Nonlinear Earthquake Simulations on Petascale Heterogeneous Supercomputers, IEEE Press, Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis (SC '16), pp82:1--82:12, Salt Lake City, Utah, U.S.A.
Ricardo Taborda, Shima Azizzadeh-Roodpish, Naeem Khoshnevis, and Keli Cheng (2016): Evaluation of the Southern California Seismic Velocity Models Through Simulation of Recorded Events, Geophys. J. Int., Oxford University Press (OUP), Vol 205, Num 3, pp1342--1364
W.H. Savran, and K.B. Olsen (2016): Model for Small-Scale Crustal Heterogeneity in Los Angeles Basin Based on Inversion of Sonic Log Data, Geophys. J. Int., Oxford University Press (OUP), Vol 205, Num 2, pp856--863
Yigit Isbiliroglu, Ricardo Taborda, and Jacobo Bielak (2015): Coupled Soil-Structure Interaction Effects of Building Clusters During Earthquakes, Earthquake Spectra, Earthquake Engineering Research Institute, Vol 31, Num 1, pp463--500
M. Böse, R. W. Graves, D. Gill, S. Callaghan, and P. J. Maechling (2014): CyberShake-Derived Ground-Motion Prediction Models for the Los Angeles Region with Application to Earthquake Early Warning, Geophysical Journal International, Oxford University Press (OUP), Vol 198, Num 3, pp1438--1457
D. Roten, K. B. Olsen, S. M. Day, Y. Cui, and D. Fäh (2014): Expected Seismic Shaking in Los Angeles Reduced by San Andreas Fault Zone Plasticity, Geophys. Res. Lett., Wiley-Blackwell, Vol 41, Num 8, pp2769--2777
Doriam Restrepo, and Jacobo Bielak (2014): Virtual Topography: A Fictitious Domain Approach for Analyzing Free-Surface Irregularities in Large-Scale Earthquake Ground Motion Simulation, International Journal for Numerical Methods in Engineering, Wiley-Blackwell, Vol 100, Num 7, pp504--533
Efecan Poyraz, Heming Xu, and Yifeng Cui (2014): Application-Specific I/O Optimizations on Petascale Supercomputers, Procedia Computer Science (14th Annual International conference on Computational Science, ICCS 2014), Elsevier BV, Vol 29, pp910--923, Cairns, Australia
En-Jui Lee, Po Chen, Thomas H. Jordan, Phillip B. Maechling, Marine A. M. Denolle, and Gregory C. Beroza (2014): Full-3-D Tomography for Crustal Structure in Southern California Based on the Scattering-Integral and the Adjoint-Wavefield Methods, J. Geophys. Res. Solid Earth, Wiley-Blackwell, Vol 119, Num 8, pp6421--6451
F. Wang, and T. H. Jordan (2014): Comparison of Probabilistic Seismic-Hazard Models Using Averaging-Based Factorization, Bulletin of the Seismological Society of America, Seismological Society of America (SSA), Vol 104, Num 3, pp1230--1257
Heming Xu, Yifeng Cui, James H. Dieterich, Keith Richards-Dinger, Efecan Poyraz, and Dong Ju Choi (2014): Aftershock Sequence Simulations Using Synthetic Earthquakes and Rate-State Seismicity Formulation, Earthquake Science, Springer Science + Business Media, Vol 27, Num 4, pp401--410
Jun Zhou, Yifeng Cui, Efecan Poyraz, Dong Ju Choi, and Clark C. Guest (2013): Multi-GPU Implementation of a 3D Finite Difference Time Domain Earthquake Code on Heterogeneous Supercomputers, Procedia Computer Science (13th annual International Conference on Computational Science, ICCS 2013), Elsevier BV, Vol 18, pp1255--1264, Barcelona, Spain
Ricardo Taborda, and Jacobo Bielak (2013): Ground-Motion Simulation and Validation of the 2008 Chino Hills, California, Earthquake, Bulletin of the Seismological Society of America, Seismological Society of America (SSA), Vol 103, Num 1, pp131--156
Y. Cui, A. Chourasia, Z. Shi, S. M. Day, P. J. Maechling, T. H. Jordan, E. Poyraz, K. B. Olsen, J. Zhou, K. Withers, S. Callaghan, J. Larkin, C. Guest, and D. Choi (2013): Physics-Based Seismic Hazard Analysis on Petascale Heterogeneous Supercomputers, Association for Computing Machinery (ACM), Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis (SC '13), Denver, Colorado, U.S.A.
Y. Cui, E. Poyraz, J. Zhou, S. Callaghan, P. Maechling, T.H. Jordan, L. Shih, and P. Chen (2013): Accelerating CyberShake Calculations on the XE6/XK7 Platform of Blue Waters, Institute of Electrical & Electronics Engineers (IEEE), 2013 Extreme Scaling Workshop (XSW 2013), Boulder, Colorado, U.S.A.
Zheqiang Shi, and Steven M. Day (2013): Rupture Dynamics and Ground Motion from 3-D Rough-Fault Simulations, J. Geophys. Res. Solid Earth, Wiley-Blackwell, Vol 118, Num 3, pp1122--1141
D. Roten, K. B. Olsen, and J. C. Pechmann (2012): 3D Simulations of M 7 Earthquakes on the Wasatch Fault, Utah, Part II: Broadband (0-10 Hz) Ground Motions and Nonlinear Soil Behavior, Bulletin of the Seismological Society of America, Seismological Society of America (SSA), Vol 102, Num 5, pp2008--2030
Y. Cui, K.B. Olsen, J. Zhou, P. Small, A. Chourasia, S.M. Day, P.J. Maechling, and T.H. Jordan (2012): Development and Optimizations of a SCEC Community Anelastic Wave Propagation Platform for Multicore Systems and GPU-Based Accelerators, Seismological Research Letters, Seismological Society of America (SSA), Vol 83, Num 2, pp396
En-Jui Lee, Po Chen, Thomas H. Jordan, and Liqiang Wang (2011): Rapid Full-Wave Centroid Moment Tensor (CMT) Inversion in a Three-Dimensional Earth Structure Model for Earthquakes in Southern California, Geophysical Journal International, Oxford University Press (OUP), Vol 186, Num 1, pp311--330
Blue Waters Symposium 2014, May 14, 2014
2015 GPU Technology Conference; San Jose, California, U.S.A., Mar 18, 2015
Blue Waters Symposium 2015, May 13, 2015
Blue Waters Symposium 2016, Jun 15, 2016
Ricardo Taborda: Influence of the Source, Seismic Velocity, and Attenuation Models on the Validation of Ground Motion Simulations
16th World Conference on Earthquake Engineering; Santiago de Chile, Chile, Jan 12, 2017
Blue Waters Webinar Series, Mar 8, 2017
Christine Goulet: Advances in Physics-based Modeling of High-frequency Ground Motions and Probabilistic Seismic Hazard Analysis using Blue Waters
Blue Waters Symposium 2017, May 18, 2017
Blue Waters Symposium a successThe symposium, held May 13-15 in Champaign, Ill., gathered many of the country’s leading supercomputer users to share what they have learned using Blue Waters and discuss the future of supercomputing.On May 13, 2014, Blue Waters supercomputer users and many of the NCSA staff who support their work converged in Champaign, Ill., for the second annual Blue Waters Symposium. The ensuing three days were filled with what many of them would later refer to as a wonderful variety of science talks and opportunities for networking and collaboration..
2015 Blue Waters Symposium highlights successes, looks to the future of supercomputingThe 2015 Blue Waters Symposium, held May 10-13 at Oregon's beautiful Sunriver Resort, brought together leaders in petascale computational science and engineering to share successes and methods. Around 130 attendees, many of whom were Blue Waters users and the NCSA staff who support their work, enjoyed presentations on computational advances in a range of research areas—including sub-atomic physics, weather, biology, astronomy, and many others—as well as keynotes from innovative thinkers and leaders in high-performance computing. Over the three days of the symposium, 58 science teams from across the country presented on their work on Blue Waters..
NSF awards time on Blue Waters to seven new projectsThe National Science Foundation (NSF) has awarded 14 new allocations on the Blue Waters petascale supercomputer at the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana-Champaign. Seven of the awards are for new projects..
Preparing for the big oneThe northern reaches of the San Andreas Fault have seen their share of major earthquakes in the last century. The 1906 San Francisco killed more than 3,000 people, and a 1989 quake near Santa Cruz postponed the World Series. The other end of the fault near Los Angeles, meanwhile, hasn't seen a major earthquake since 1680. But there is a high probability of a rupture over the next two decades.A team of more than 30 earthquake scientists, computer scientists, and other specialists are very interested in that next earthquake—what it might look like, what sort of damage it might cause, and what might be done to mitigate the damage. Led by the Southern California Earthquake Center (SCEC), they plan to use the Blue Waters sustained-petascale supercomputer at NCSA to model it..
Do the waveEarthquake risk is a thorny subject scientifically and in society.In 2012, an Italian judge sentenced six Italian scientists and engineers and one government official to six years in prison for downplaying the risk of an impending earthquake in L’Aquila, Italy, in 2009. The charge was manslaughter. The judge held the scientists responsible for 29 of the 309 deaths because he said the scientists failed to properly analyze and explain the earthquake threat in the days leading up to the 6.3-magnitude quake. ... "It's incredible that scientists trying to do their job under the direction of a government agency have been convicted for criminal manslaughter," said geoscientist Tom Jordan to Science magazine when the verdict was handed down. "We know that the system for communicating risk before the L'Aquila earthquake was flawed, but this verdict will cast a pall over any attempt to improve it. I'm afraid that many scientists are learning to keep their mouths shut."Jordan is not one of those quiet scientists. At the Southern California Earthquake Center (SCEC) where Jordan is the lead scientist, the SCEC PressOn project aims to improve long-term earthquake prediction (on the decadal time scale) and modeling as a step toward more specific and accurate earthquake hazard assessments..
Los Angeles basin jiggles like big bowl of jelly in cutting-edge simulationsEarthquakes occur on a massive scale and often originate deep below the surface of the Earth, making them notoriously difficult to predict. The Southern California Earthquake Center (SCEC) and its lead scientist, Thomas Jordan, use massive computing power made possible by the National Science Foundation (NSF) to improve our understanding of earthquakes. In doing so, SCEC is helping to provide long-term earthquake forecasts and more accurate hazard assessments..
10 ways advanced computing catalyzes scienceWhen researchers need to compare complex new genomes, or map new regions of the Arctic in high-resolution detail, or detect signs of dark matter, or make sense of massive amounts of functional MRI data, they turn to the high-performance computing and data analysis systems supported by the National Science Foundation (NSF).High-performance computing (or HPC) enables discoveries in practically every field of science -- not just those typically associated with supercomputers like chemistry and physics, but also in the social sciences, life sciences and humanities.The Southern California Earthquake Center (SCEC) and its lead scientist Thomas Jordan use massive computing power to simulate the dynamics of earthquakes. In doing so, SCEC helps to provide long-term earthquake forecasts and more accurate hazard assessments..
SCEC Improves Understanding of Earthquake Hazards with Supercomputers, Achieves Societal ImpactsDecision-makers from various sectors now have better knowledge to assess and mitigate earthquake risk owing to high-performance computing research by the Southern California Earthquake Center (SCEC), headquartered at the University of Southern California. On Thursday at the 2015 International Conference for High Performance Computing, Network Storage, and Analysis ("Supercomputer 2015") in Austin, Texas, SCEC Director Tom Jordan will present an invited talk on the societal impacts of SCEC's research and development in using supercomputers. "By using the nation's largest supercomputers, we can now forecast with more accuracy and detail the strong shaking that will come from large earthquakes in Southern California," stated Tom Jordan, Director of SCEC..