SEISMIC WAVE PROPAGATION IN BANDUNG BASIN, WEST JAVA

Abstract

Wave propagation is a fundamental issue in all over seismic prone areas, including in the Bandung basin. Bandung basin consists of several geological formations. Based on the tectonic conditions, this area is surrounded by active seismic sources. Several main faults play a role part in dynamic soil conditions. Wave propagation from earthquake shaking has a significant impact on the soil surface. Recent studies in the Bandung basin showed the seismic hazard on the bedrock, but less understanding of hazard on the soil surface. Building construction failures caused by the soil surface's ground-shaking correlate linearly with the Peak Ground Acceleration (PGA) value. This paper discusses the soil surface acceleration on the Bandung basin using the wave propagation method using a non-linear seismic response analysis. The result shows that the highest soil surface acceleration is found in the Tanjung Jaya village, while the lowest is in Ciwastra village. The PGA value varies between 0.42g to 0.70 g. The seismic ground-motion strongly influences these results on bedrock and soil stratigraphy in the survey area. contact email: [email protected]; [email protected]

Keywords

• wave propagation
• bandung basin
• soil surface
• ground motion
• pga