Keiiti Aki
Keiiti Aki is actually awarded brand new 2004 William Bowie Medal at AGU Slip Meeting Honors Service, that was held into , from inside the Bay area, California.
Violation
Kei Akis medical research has prolonged new frontiers off seismology for 50 years. The guy developed the newest electronic processing from seismic research to infer Planet design and you may services of your disturbance provider. Much of what we learn about highest earthquakes employs out of their functions.
He had been the first to ever level seismic minute (on the 1964 Niigata earthquake); Aki moment provides as the changed Richter magnitude once the standard measure of disturbance size. The guy discovered the fundamental scaling laws to have seismic spectra you to definitely solved inconsistencies one of more magnitude scales, in which he suggested bodily type earthquakes to possess heterogeneous blame rupture. That it works contributed significantly to the basic comprehension of the fresh rupture procedure and simple understanding of solid soil moves.
He elucidated the newest sprinkling and you will attenuation process one regulate the brand new propagation off large-regularity seismic surf, where he derived new strategies for calculating quake dimensions, sprinkling distributions, and you may intrinsic attenuation details. The guy displayed, including, that intrinsic attenuation need certainly to drop-off within higher frequencies.
The guy install of several novel strategies for detailing regions of seismic surf, along with totally free-oscillation breaking, Gaussian beams, and you will edge inbuilt methods. Within the each situation, the guy and his awesome youngsters properly utilized these types of solutions to extract brand new brand of guidance regarding seismograms. Continua a leggere