Earthquakes are rare but correlated.Abstract
Shock waves caused by earthquakes can be devastating. Generating realistic earthquake-caused ground motion waveforms help reducing losses in lives and properties, yet generative models for the task tend to generate subpar waveforms. We present High-fidelity Earthquake Groundmotion Generation System (HEGGS) and demonstrate its superior performance using earthquakes from North American, East Asian, and European regions. HEGGS exploits the intrinsic characteristics of earthquake dataset and learns the waveforms using an end-to-end differentiable generator containing conditional latent diffusion model and hi-fidelity waveform construction model. We show the learning efficiency of HEGGS by training it on a single GPU machine and validate its performance using earthquake databases from North America, East Asia, and Europe, using diverse criteria from waveform generation tasks and seismology. Once trained, HEGGS can generate three dimensional E-N-Z seismic waveforms with accurate P/S phase arrivals, envelope correlation, signal-to-noise ratio, GMPE analysis, frequency content analysis, and section plot analysis.
Hanyoung Kim
Ph.D. Student
I’m the last M.S. in Financial Engineering graduate managed from Econ department! You can easily find my name on most Korean keyboards :)
Bosung Jung
M.S. Student
Completing coursework at all the schools within the Korea Central Education Institute.
Donghun Lee
Assistant Professor
Connecting artificial intelligence and mathematics, in both directions.