Seismic Hazard Analysis Based on Peak Ground Acceleration and Modified Mercalli Intensity in North Bengkulu Regency, Bengkulu Province
Year: 2026
Type: conference-paper
Abstract: North Bengkulu is an earthquake-prone area.Therefore, this study is necessary in this area.This study examines the spatial characteristics of earthquake-related ground shaking in North Bengkulu Regency through the combined evaluation of ground motion parameters and macroseismic intensity indicators.Peak Ground Acceleration (PGA) was estimated using the Kanai approach, incorporating site-specific dynamic properties derived from ambient vibration measurements processed via Horizontal-to-Vertical Spectral Ratio analysis.Key seismological inputs, including earthquake size and source proximity, were extracted from global seismic catalogs maintained by international monitoring agencies for events recorded between 1924 and 2024.The results indicate that large portions of the study area experience moderate to relatively strong ground motion, which corresponds to Modified Mercalli Intensity (MMI) levels ranging from VI to IX.These conditions underline the importance of strengthening preparedness and mitigation strategies in sectors exhibiting elevated seismic vulnerability in order to limit potential impacts from future earthquakes.
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Funder: Universitas Bengkulu
OpenAlex ID: W7204494039