IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)
3
Issued Date
2024-01-01
Resource Type
eISSN
30065933
Scopus ID
2-s2.0-105027885963
Journal Title
World Conference on Earthquake Engineering Proceedings
Volume
2024
Rights Holder(s)
SCOPUS
Bibliographic Citation
World Conference on Earthquake Engineering Proceedings Vol.2024 (2024)
Suggested Citation
Ornthammarath T., Warnitchai P., Poovarodom N. IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND). World Conference on Earthquake Engineering Proceedings Vol.2024 (2024). Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/114088
Title
IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)
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Abstract
We evaluate a probabilistic seismic hazard analysis (PSHA) for the Chiang Mai basin (Thailand), to assess the impact of site response characterization on hazard estimates. The effect of a basin amplification factor introduced in NGA West 2 ground motion models (GMMs) is presented based on the available shear wave velocity profile from microtremor measurement. In addition, 1D amplification related to stratigraphic conditions is considered with the associated uncertainties, and their impact on the hazard is analyzed through a sensitivity analysis. The results provide a good comparison between empirical GMMs and a conventional study, highlighting the importance of ground amplification effects in hazard assessment.