000010688 001__ 10688
000010688 005__ 20141205155753.0
000010688 04107 $$aeng
000010688 046__ $$k2008-10-12
000010688 100__ $$aLi, Shanyou
000010688 24500 $$aA New Magnitude Estimation Method Based on Predominant Period and Peak Amplitude

000010688 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010688 260__ $$b
000010688 506__ $$arestricted
000010688 520__ $$2eng$$aEarthquake Early Warning (EEW) is a useful tool for practical real-time seismic hazard mitigation at present. The critical technology of EEW is determining the size of an earthquake and the predicted ground motion at given site, from the first few seconds of the P waves. Currently, there are two different approaches to the EEW magnitude estimation, predominant period method and amplitude method. However, both methods have some disadvantages, such as significant uncertainty and saturation at great magnitude. To improve the estimation of magnitude, a new united predominant period τc and amplitude Pmax method is developed and the formula is M = a*log Pmax +b*logτc +c*log Δ +d Where a, b, c, and d are constants, Δ is epicentral distance. The magnitude estimation results of the first three second P wave of NSMP strong motion data indicate that, the estimation precision of new method is higher than those of the two methods mentioned above, and the saturation at great magnitude is improved. Meanwhile, for short hypocentral distances, a simplified united predominant period τc and amplitude Pmax method is presented, the formula is M = a*log Pmax +b*logτc +d

000010688 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010688 653__ $$aEarthquake Early Warning (EEW), Magnitude, Predominant Period, Amplitude

000010688 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010688 720__ $$aLi, Shanyou$$iSong, Jindong
000010688 8560_ $$ffischerc@itam.cas.cz
000010688 8564_ $$s161930$$uhttps://invenio.itam.cas.cz/record/10688/files/S05-03-012.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S05-03-012.
000010688 962__ $$r9324
000010688 980__ $$aPAPER