000018688 001__ 18688
000018688 005__ 20170118182236.0
000018688 04107 $$aeng
000018688 046__ $$k2017-01-09
000018688 100__ $$aWei, Yong
000018688 24500 $$aDevelopment of Offshore Probabilistic Tsunami Exceedance Amplitudes for Asce 7-16

000018688 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018688 260__ $$b
000018688 506__ $$arestricted
000018688 520__ $$2eng$$aWe have developed probabilistic tsunami offshore amplitude exceedance maps, with an average return period of 2500 yr, for the five Pacific states of the USA to be used as basis for the tsunami design guidelines of ASCE 7-16. These maps are based on a comprehensive integration over tsunamigenic earthquakes on all the circum-Pacific subduction zones. Thanks to the linear behavior of tsunami waves in the deep ocean, we are able to use an efficient Green’s function summation approach to model, which enabled us to integrate over thousands of events. An integral part of the analysis is the formal inclusion of epistemic uncertainties, resulting from a limited understanding of the physical processes as well their aleatory variability due to the randomness in natural processes. We can divide the offshore tsunami hazard problem into two stages: the source characterization and deep ocean propagation. In the source characterization, many of the epistemic uncertainties and aleatory variabilities are identical to those specified in probabilistic seismic hazard analysis (PSHA). The biggest difference is in the details of slip distributions, which are very significant in tsunami excitation, especially for near-field tsunamis, but are not used in PSHA. We have used a simplified asperity model to include this variability. These offshore hazard maps are used to anchor the tsunami inundation zones included in ASCE 7-16, developed by NOAA, and are also used as a constraint for site-specific inundation studies as prescribed in the standards.

000018688 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018688 653__ $$atsunami; hazard; probabilistic;

000018688 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018688 720__ $$aWei, Yong$$iThio, Hong Kie$$iChock, Gary
000018688 8560_ $$ffischerc@itam.cas.cz
000018688 8564_ $$s768882$$uhttps://invenio.itam.cas.cz/record/18688/files/2004.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2004.
000018688 962__ $$r16048
000018688 980__ $$aPAPER