IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)

T. Ornthammarath; P. Warnitchai; N. Poovarodom

IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)

T. Ornthammarath
, P. Warnitchai
, N. Poovarodom

Department of Civil and Environmental Engineering

Asian Institute of Technology Thailand
Thammasat University

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

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.

Original language	English
Title of host publication	World Conference on Earthquake Engineering proceedings
Publisher	International Association for Earthquake Engineering
Publication status	Published - 2024

Publication series

Name	World Conference on Earthquake Engineering proceedings
Volume	2024
ISSN (Electronic)	3006-5933

Cite this

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title = "IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)",

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.",

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IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND). / Ornthammarath, T.; Warnitchai, P.; Poovarodom, N.
World Conference on Earthquake Engineering proceedings. International Association for Earthquake Engineering, 2024. (World Conference on Earthquake Engineering proceedings; Vol. 2024).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

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T1 - IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)

AU - Ornthammarath, T.

AU - Warnitchai, P.

AU - Poovarodom, N.

PY - 2024

Y1 - 2024

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/105027885963

M3 - Chapter

AN - SCOPUS:105027885963

T3 - World Conference on Earthquake Engineering proceedings

BT - World Conference on Earthquake Engineering proceedings

PB - International Association for Earthquake Engineering

ER -

IMPACT OF BASIN AMPLIFICATION FACTORS ON THE PSHA ANALYSIS IN THE CHIANG MAI BASIN (THAILAND)

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