Probabilistic seismic hazard assessment without source characterization

TY - JOUR

T1 - Probabilistic seismic hazard assessment without source characterization

AU - Tsang, Hing-Ho

AU - Lam, Nelson T. K.

AU - Lo, S. H.

PY - 2007/1

Y1 - 2007/1

N2 - Conventional Probabilistic Seismic Hazard Assessment (PSHA) is difficult to apply in regions lacking sufficient information of the geological setting, active faults, and so forth. Also, for a site-specific PSHA, site effects arising from both crustal rock and overlying soil sediments are generally not assessed rigorously. This is of particular importance for those metropolitan cities having a significant proportion of reclaimed land, because the site-to-site variability of such site effects can be very large. The objective of this paper is to demonstrate an alternative procedure for constructing site-specific uniform hazard spectra (UHS), extended from a recently-developed Direct Amplitude-Based (DAB) approach. The method has a number of important advantages compared with conventional PSHA. Using the proposed approach, response spectral values have been computed for the whole period range of engineering interest, to form a set of site-specific UHS.

AB - Conventional Probabilistic Seismic Hazard Assessment (PSHA) is difficult to apply in regions lacking sufficient information of the geological setting, active faults, and so forth. Also, for a site-specific PSHA, site effects arising from both crustal rock and overlying soil sediments are generally not assessed rigorously. This is of particular importance for those metropolitan cities having a significant proportion of reclaimed land, because the site-to-site variability of such site effects can be very large. The objective of this paper is to demonstrate an alternative procedure for constructing site-specific uniform hazard spectra (UHS), extended from a recently-developed Direct Amplitude-Based (DAB) approach. The method has a number of important advantages compared with conventional PSHA. Using the proposed approach, response spectral values have been computed for the whole period range of engineering interest, to form a set of site-specific UHS.

KW - Attenuation

KW - Probabilistic

KW - Recurrence

KW - Response spectrum

KW - Seismic hazard

KW - Uniform hazard

UR - https://www.worldses.org/journals/environment/old.htm

UR - https://www.scopus.com/pages/publications/38549090568

M3 - Article

AN - SCOPUS:38549090568

SN - 1790-5079

VL - 3

SP - 8

EP - 13

JO - WSEAS Transactions on Environment and Development

JF - WSEAS Transactions on Environment and Development

IS - 1

ER -