TY - JOUR AU - Mochamad Teguh, AU - Wisnu Erlangga, PY - 2019/04/07 Y2 - 2024/03/29 TI - COMPARISON OF BEDROCK AND SURFACE TIME HISTORIES SUBJECTED TO SUBDUCTION EARTHQUAKES IN A SELECTED LOCATION OF YOGYAKARTA JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 17 IS - 63 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/2139 SP - 77-86 AB - <p>In practical building design, a time history is usually based on earthquake records from<br>somewhere else, without any precise matching processes. Consequently, the time history is rarely used in<br>building analysis, because of the difficulty in collecting accurate data at the building site. In this study, the<br>site of the Alana Yogyakarta Hotel was selected as a research object for determining the real-time history,<br>aimed towards an earthquake hazard analysis by using the Probabilistic Seismic Hazard Analysis (PSHA)<br>method. Earthquake events affecting Yogyakarta and its surrounding areas were collected from earthquake<br>catalogs and they were supplied from various sources, either from the government and/or from international<br>institutions. The data that was used in the hazard analysis was focused on the main shock only, so the<br>separation processes were essentially required to distinguish between the main shock, the foreshock and the<br>aftershock. Due to the unavailability of attenuation functions, these were then determined based upon the<br>earthquake data, by selecting the similarities of the tectonic and geological conditions in Indonesia, thus<br>producing a seismic hazard curve and a uniform hazard response spectrum. The time history data on the<br>bedrock was selected based on the dominant magnitude and the dominant distance of the subduction<br>earthquakes and matched with the uniform hazard response spectrum, so as to produce a matched response<br>spectrum. The results have shown that the peak times of the acceleration increased, as the results of the<br>matching earthquake data on the bedrock corresponded to the hazard deaggregation analysis.<br><br></p> ER -