000018293 001__ 18293
000018293 005__ 20170118182216.0
000018293 04107 $$aeng
000018293 046__ $$k2017-01-09
000018293 100__ $$aMa, Benliang
000018293 24500 $$aIs There a Logical Shortcoming in Ground Motion Attenuation Study

000018293 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018293 260__ $$b
000018293 506__ $$arestricted
000018293 520__ $$2eng$$aAttenuation relations, also known as ground motion prediction equations, have been developed and adopted to assess seismic hazard. In almost every attenuation relation, a distance term is used to describe the attenuation effect, and a magnitude term is used to describe the source effect. Although there are various definitions for earthquake magnitude (e.g., local magnitude, surface magnitude and moment magnitude etc.), they are estimated based on the amplitudes of ground motions recorded by monitoring networks. To estimate the magnitude, a calibration function taking into account the attenuation effect of motion is adopted to convert the observed amplitude to the value at a point with distance 100 km from the source. To predict ground motion, geometric and inelastic attenuation terms are adopted with different formula forms. The result of this inconsistency is that the ground motion measure (such as peak ground acceleration and spectral acceleration) predicted by the attenuation relationship may be different with that observed for the given distance and magnitude. This is a logical shortcoming in the attenuation relationship studies. Why the shortcoming exists for so long a time? First, the exchange of information between the people who determine the earthquake magnitude (mostly seismologists) and the people who develop attenuation relationships (mostly civil engineers) is limited. Second, and more importantly, the data used to determine the magnitude and to predict ground motion are often different. Effect of this inconsistency on the seismic hazard assessment is examined in this study; some preliminary results are presented to show the problem and a potential solution to overcome this problem is suggested.

000018293 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018293 653__ $$astrong ground motion, attenuation relationship, distance, magnitude

000018293 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018293 720__ $$aMa, Benliang$$iZhu, Baihui$$iTao, Zhengru$$iTao, Xiaxin
000018293 8560_ $$ffischerc@itam.cas.cz
000018293 8564_ $$s323989$$uhttps://invenio.itam.cas.cz/record/18293/files/1177.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1177.
000018293 962__ $$r16048
000018293 980__ $$aPAPER