Subsurface geometry, particularly the depth of bedrock, is crucial in many applications i.e. site effects studies, hydrogeologic studies and site characterization projects. Estimating the bedrock surface using ambient seismic noise analysis has been practiced by many researchers with most studies focusing on utilizing site resonance frequency. This study proposes a simple approach of applying ambient noise array analysis for estimating bedrock depth. To examine the approach, array ambient noise data have been acquired at two sites. Analysis of ambient noise data was carried out. Shear wave velocity of the sites was inverted and bedrock depth was estimated. A comparison of the bedrock depth predictions using this study approach with boreholes drilled in close proximity to the measured sites demonstrates that the approach provides a comparable bedrock depth estimation. This suggests that the method provides reasonable results as a bedrock depth proxy at study sites.
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18 July 2018
INTERNATIONAL SYMPOSIUM ON EARTH HAZARD AND DISASTER MITIGATION (ISEDM) 2017: The 7th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction
20–21 November 2017
Bandung, Indonesia
Research Article|
July 18 2018
A simple approach of enhancing ambient noise array analysis as bedrock depth proxy
Bambang Setiawan
Bambang Setiawan
Teknik Geologi, Fakultas Teknik, Universitas Syiah Kuala
Jln. Tgk. Syech Abdurrauf 7, Darussalam, Banda Aceh 23111, INDONESIA
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Corresponding author: bambang.setiawan@unsyiah.ac.id
AIP Conf. Proc. 1987, 020001 (2018)
Citation
Bambang Setiawan; A simple approach of enhancing ambient noise array analysis as bedrock depth proxy. AIP Conf. Proc. 18 July 2018; 1987 (1): 020001. https://doi.org/10.1063/1.5047286
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