000012101 001__ 12101
000012101 005__ 20141205160019.0
000012101 04107 $$aeng
000012101 046__ $$k2008-10-12
000012101 100__ $$aWong, Ivan
000012101 24500 $$aEvaluating the Seismic Hazards in Metro Manila,Philippines

000012101 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012101 260__ $$b
000012101 506__ $$arestricted
000012101 520__ $$2eng$$aWe have performed site-specific probabilistic seismic hazard analyses (PSHA) for four sites in the Manila metropolitan area. The Philippine Islands lie within a broad zone of deformation between the subducting Eurasian and Philippine Sea Plate. This deformation is manifested by a high level of seismicity, faulting, and volcanism. The Philippines fault zone is a major left-lateral strike-slip fault that remains offshore east of Manila. The Marikina Valley fault system (MVFS) is the closest active fault to Manila and represents the most likely near-field source of large damaging earthquakes. The largest earthquake that has struck Manila historically, surface wave magnitude (MS) 7.5, occurred in 1645. Manila has experienced other historical damaging earthquakes numerous times. We have included 14 crustal faults, and the Manila Trench, Philippines Trench, and East Luzon Trough subduction zones (both megathrusts and Wadati-Benioff zones) in our seismic source model. We also have accounted for background crustal seismicity through the use of an areal source zone and Gaussian smoothing. Very little paleoseismic data is available for crustal faults in the Philippines including the MVFS so we have included a large amount of epistemic uncertainty in the characterization of these faults using logic trees. New empirical ground motion predictive equations were used in the PSHA. Based on our analyses, the hazard in the Manila metropolitan area for soil sites and a 2,475-year return period can exceed peak horizontal accelerations of 1.0 g almost solely due to the MVFS. At 1.0 sec spectral acceleration, the MVFS still dominates the hazard in Manila with a small contribution from the Manila Trench megathrust.

000012101 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012101 653__ $$aProbabilistic seismic hazard, Philippines, Marikina Valley fault system

000012101 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012101 720__ $$aWong, Ivan$$iDawson, Timothy$$iDober, Mark
000012101 8560_ $$ffischerc@itam.cas.cz
000012101 8564_ $$s406302$$uhttps://invenio.itam.cas.cz/record/12101/files/07-0109.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 07-0109.
000012101 962__ $$r9324
000012101 980__ $$aPAPER