Earthquake engineering takes advantage of a massive new data-sharing network from the Department of Energy's national laboratories

Collaboration between government and academic institutions is key to mitigating regional and national risks, a fact that the University Seismic Laboratory understands and implements.

The Center for Civil Engineering Earthquake Research (CCEER), home of the sheet soil box system unveiled in September, is collaborating with Lawrence Berkeley National Laboratory and Oak Ridge National Laboratory in Tennessee to better understand earthquake infrastructure response on a regional scale. The conduit for this collaborative project — which relies on rapidly exchanging massive amounts of data — is the US Department of Energy's High Performance Energy Systems Network, or ESnet, developed and managed by Berkeley Lab and funded by the Department of Energy.

The drawing shows the implementation of a large-scale parallel ground motion simulation at Oak Ridge and the use of ESnet to send data to Berkeley Lab. CCEER then uses the data to assess the seismic risk of the infrastructure.

“It allows us to run regional-scale earthquake simulations on the new DOE supercomputers at Oak Ridge National Laboratory, and transfer tens to hundreds of terabytes of output data back to Lawrence Berkeley Laboratory, where we can get this dataset of ground motions such as “This resource is a resource to use in our infrastructure seismic risk assessments,” said CCEER Director David McAllen.

McAllen presented an example of an ESnet use case around massively parallel regional earthquake simulations at a recent event at Berkeley Lab to debut ESnet6, the latest version of the network. ESnet6 can exchange data sets across the country at a speed of 100-400 Gbps.

As shown in the diagram, massive seismic data is transmitted from the Summit supercomputer at Oak Ridge National Laboratory's Command Computing Center to the National Energy Research Scientific Computing Center at Berkeley Lab. Simulated seismic ground motions for 3.14 billion surface sites in the San Francisco Bay Area were split into two 2-gigabyte packets and sent over a parallel fiber-optic network to Berkeley Lab. The time needed to send suggestions to all 3.14 billion sites is about 10 minutes.

ESnet helps facilitate the EarthQuake Simulation Framework, or EQSIM, a collaborative effort between the university's Seismic Laboratory — which houses the unique, custom-designed soil box facility that tests the interaction between soil structure — and the two institutes. National Laboratories, which has the supercomputers needed to develop large, detailed earthquake simulations. Eventually, these simulated ground motions will be made available to the public through the Pacific Earthquake Engineering Research (PEER) open-access ground motion database at UC Berkeley.

This work aligns with one of the College of Engineering's key focus areas: engineering and designing equitable community infrastructure to mitigate cascading local, regional, and global risks.

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