Elasto-acoustic modeling and simulation for the seismic response of structures: The case of the Tahtalı dam in the 2020 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:mover accent="true"><mml:mrow><mml:mtext mathvariant="normal">I</mml:mtext></mml:mrow><mml:mrow><mml:mo>˙</mml:mo></mml:mrow></mml:mover></mml:math>zmir earthquake

As a mean to assess the risk dam structures are exposed during earthquakes, we employ an abstract mathematical, three dimensional, elasto-acoustic coupled wave-propagation model taking into account (i) structure itself, embedded (ii) its surrounding topography, (iii) different material soil layers, (iv) seismic source as well (v) reservoir lake filled with water treated acoustic medium. case study for extensive numerical simulations consider magnitude 7 event of 30$^{\rm th}$ October 2020 place in Icarian Sea (Greece) and Tahtali around 30 km from there (Turkey). A challenging task is resolve multiple length scales that present due huge differences size between building area interest, considered propagation earthquake. Interfaces highly non-conforming meshes on resolved by means discontinuous Galerkin approach. The modeled using inversion data about real fault plane. Ultimately, perform driven, multi-scale, full source-to-site, physics based simulation spectral element method, which allows precisely validate ground motion experienced along dam, comparing synthetic seismograms against actually observed ones. comparison more classical computational plane wave deconvolved seismogram reading input, discussed.