The identifier 104-1.mp4 generally refers to either a Seismological Society of America (BSSA) video showing seismic wave propagation for the 2009 L'Aquila earthquake, or a Densho Digital Repository interview segment featuring Walt Woodward. Access the scientific simulation via Seismological Society of America or the historical interview through Densho Digital Repository . BSSA 104:1, Electronic Supplement to Magnoni et al.