Vibe Coding Historical Nuclear Tests

FSRM (Full Service Reservoir Model) demonstrates the power of AI-assisted development to create sophisticated scientific software for nuclear explosion monitoring. Using “vibecoding”—iterative collaboration with large language models—a comprehensive multi-physics simulator was developed that accurately reproduces historical nuclear test signatures for both underground and atmospheric detonations. The code implements Mueller-Murphy seismic source models for underground tests, capturing cavity formation, spall, chimney collapse, and seismic wave generation essential for treaty verification. Atmospheric detonation models include Brode fireball evolution, Sedov-Taylor blast wave propagation, and electromagnetic pulse (EMP) effects. Built on PETSc for parallel computing, the simulator handles complex coupling between elastodynamics, plasticity, fracture mechanics, and radiation transport. This “vibecoded” approach enabled rapid development of capabilities traditionally requiring years of specialized coding, producing a tool that validates against SCEC earthquake benchmarks and generates synthetic seismograms comparable to real IMS station data. The resulting open-source code provides nuclear monitoring agencies with a flexible platform for testing detection algorithms, analyzing historical events, and training analysts on explosion phenomenology. The project illustrates how AI-assisted development can democratize access to sophisticated geophysical simulation tools previously limited to national laboratories.