Summary The 2015 Illapel earthquake produced self‐evacuation of tall buildings in the city of Buenos Aires, Argentina, located 1280 km away from the epicenter. The ground motions in Buenos Aires due to the main event (Mw 8.3) and its aftershocks were registered by a new seismometer. The data collected allowed to estimate the maximum story drift ratios and top floor accelerations for tall buildings in Buenos Aires. The similarities between the response spectra and the Fourier amplitude spectra for the mainshock and its aftershocks show the influence that the dynamic properties of the 300‐m soil deposit have on the large acceleration amplification produced in these groups of buildings.

Rock concerts events in the River Plate Stadium in Buenos Aires (and other stadiums) has raised neighborhood complains due to molest vibrations felt by the inhabitants of some buildings at distances up to 3 km. In this paper are described the results of the studies conducted to determine the origin and the effects on buildings of vibrations generated during rock concerts in stadiums. First, are presented the equations for modeling: a) the coordinate jump of the public on the field and the generated load; b) the acceleration wave propagation over the surface of an elastic solid and c) the response of buildings at different distances from the stadium. The resulting equations are used to estimate the accelerations at top of buildings at distances inside a 3 km radio from the stadium. Then, the planned and obtained measurements during the concerts are shown and evaluated. Finally the conclusions and recommendations in relation with the effects of the coordinate jump of the public on the field, the properties of the affected buildings, their distance to the stadium and the effects on the structures, contents and inhabitants are presented. It is shown that for buildings in resonance with the spectator jumps (2 Hz of natural frequency, i.e. buildings around 10 to 12 stories at Buenos Aires), the acceleration level at the upper stories is sever to persons (even is not high enough to produce structural and non structural damage) to distances of more than 3 km from the stadium.

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