<p><span><span>The 2016 </span><span>Kumamoto</span><span> </span><span>earthquake </span><span>Mw</span><span> 7.0 occurred in Japan </span><span>reveal</span><span> a multisegment shallow fault rupture that was </span><span>well</span><span> recorded by the </span><span>KiK-net</span><span> stations</span><span> in accelerographs placed inside boreholes and on the </span><span>surface</span><span>.</span></span><span> The <span>numerous</span> damaged buildings due to this <span>earthquake</span> <span>reflect</span> the critical implications for seismic hazard <span>estimation</span> and <span>improvement</span> of earthquake-resistant design for a shallower event.</span><span> <span>Here</span>, <span>we</span> <span>generate</span> synthetic <span>accelerograms</span> at high frequencies <span>implementing</span> a stochastic method that <span>allow</span> us to <span>simulate</span> horizontal and vertical strong ground-motion <span>accelerograms</span> in azimuthal well-distributed stations.</span><span> <span>We</span> <span>included</span> multisegment finite fault geometries <span>estimated</span> by independent authors as input for source model.</span><span><span> From </span><span>each</span><span> </span><span>sub-fault</span><span> </span><span>we</span><span> </span><span>calculated</span><span> the </span><span>incident</span><span> and azimuthal angles </span><span>arriving</span><span> at </span><span>each</span><span> seismic station, </span><span>we</span><span> </span><span>determined</span><span> free surface </span><span>effect</span><span>, energy partition, radiation pattern and dynamic frequency corner for sources </span><span>effect</span><span>.</span></span><span><span> </span><span>Besides</span><span>, </span><span>we</span><span> </span><span>adopted</span><span> region-specific </span><span>attenuation</span><span> </span><span>parameters</span><span> such as geometrical spreading and anelastic </span><span>attenuation</span><span> for path </span><span>effect</span><span>, and site </span><span>effect</span><span> </span><span>parameters</span><span> </span><span>such as</span><span> generic </span><span>amplifications</span><span>, soil </span><span>amplification</span><span> transfer functions for body waves, and high-frequency </span><span>attenuation</span><span> kappa filter.</span></span><span><span> Our</span> simulated acceleration <span>time series</span> show similarities <span>in </span><span>time</span> and <span>frequency</span> with the observed records in the <span>frequency band</span> between <span>1</span> –</span><span> 10 Hz.</span><span><span> </span><span>We</span><span> </span><span>obtained</span><span> a </span><span>good</span><span> agreement between peak ground accelerations for both </span><span>horizontal</span><span> and vertical </span><span>components</span><span>, and </span><span>we</span><span> </span><span>reproduce</span><span> the </span><span>amplitude</span><span> and </span><span>attenuation</span><span> trend for the </span><span>horizontal</span><span> </span><span>component</span><span> of the </span><span>GMPE</span><span> models</span><span> in the </span><span>region</span><span>.</span></span><span><span> </span><span>Finally</span><span>, </span><span>we</span><span> are capable to </span><span>simulate</span><span> the high-frequency band of engineering interest using physics-based </span><span>parameters</span><span> to </span><span>improve</span><span> our </span><span>knowledge</span><span> about the </span><span>source</span><span>, </span><span>path</span><span>, and site effect and their </span><span>impact</span><span> on a seismic hazard assessment in earthquake-prone regions.</span></span></p>

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