Seismic Hazard Analysis of Surface Level in Tasikmalaya City

Authors

  • Bambang Sunardi Sleman Geophysics Station
  • Drajat Ngadmanto Research and Development Center, Meteorological, Climatological, and Geophysical Agency
  • Supriyanto Rohadi Teknik Sipil, Universitas Putra Indonesia YPTK Padang
  • Dwi Budi Susanti Universitas Putra Indonesia YPTK Padang
  • Rafki Imani Universitas Putra Indonesia YPTK Padang

DOI:

https://doi.org/10.22216/jod.v17i2.1767

Keywords:

PSHA, Vs30, PGA, Seismic Hazard, Tasikmalaya

Abstract

Learning from Tasikmalaya earthquakes on December 15, 2017 and September 2, 2009, seismic hazard analysis of surface level in Tasikmalaya City become important to do. This study presents seismic hazard estimation of Tasikmalaya City in terms of maximum ground acceleration (PGA) and spectral acceleration at surface level. The latest seismicity data were used to evaluate seismic hazards. There were three seismic source types considered to model seismic sources in the region, including megathrust, shallow crustal, and background source zones. Several Ground Motion Prediction Equations (GMPE) were used to characterize the properties of attenuation. The average shear wave velocity for 30 m depth (Vs30) for site classification were estimated using Multichannel Analysis of Surface wave (MASW). Furthermore, Probabilistic Seismic Hazard Analysis (PSHA) correspond to an exceeded 2% probability within 50 years were carried out to map seismic hazards at surface level by considering the site classification. The analysis showed that the highest seismic hazard at surface level in the Districts of Kawalu, Tamansari, Cibeureum, Mangkubumi, and Purbaratu. This area needs attention because it also has a large population.

Downloads

Published

2022-11-12

Issue

Vol. 7 No. 2 (2022): JOURNAL OF DYNAMICS (International Journal of Dynamics in Engineering and Sciences)

Section

Articles

License

Copyright (c) 2022 JOURNAL OF DYNAMICS (International Journal of Dynamics in Engineering and Sciences)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

You are free to:

  • Adapt — remix, transform, and build upon the material for any purpose, even commercially.

Under the following terms:

  • No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Notices:

  • You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
  • No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.