Source Scaling Properties from Finite-Fault-Rupture Models

Martin, Paul Marius; Beroza, Gregory C.

doi:10.1785/0119990126

Cited by 310 publications

(300 citation statements)

References 51 publications

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“…It can be seen that Model-3 and Model-4 have small absolute differences, and hence are close to the reference model in terms of these overall macroscopic source parameters. In addition, we compute effective source dimensions and effective mean slip (Mai & Beroza 2000), shown for the reference model in Fig. 10.…”

Section: N V E Rt E D S L I P M O D E L S F Ro M a B E N C H M A R mentioning

confidence: 99%

Analysing earthquake slip models with the spatial prediction comparison test

Zhang¹,

Martin²,

Thingbaijam³

et al. 2014

Geophysical Journal International

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Section: N V E Rt E D S L I P M O D E L S F Ro M a B E N C H M A R mentioning

confidence: 99%

Analysing earthquake slip models with the spatial prediction comparison test

Zhang¹,

Martin²,

Thingbaijam³

et al. 2014

Geophysical Journal International

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“…In many slip models, the rupture plane or planes overestimate the "true" rupture area of the earthquake to ensure that all the slip can be accommodated on the plane during the inversion (Somerville et al, 1999;Mai and Beroza, 2000). This overestimation of the rupture area results in rows or columns on the edges of the model that have very little or even zero slip.…”

Section: Finite-source Modelsmentioning

confidence: 99%

The Seismogenic Thickness of the Southern California Crust

Nazareth

Hauksson

2004

Bulletin of the Seismological Society of America

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The average seismogenic thickness, measured from the surface down to maximum depth of earthquake rupture, for the southern California crust is 15.0 km ‫1.1מ/2.1ם(‬ km). We determine the seismogenic thickness using the depth distribution of the seismic moment release of ϳ19 years of seismicity. We calibrate the depth distribution of moment release from background seismicity by comparing the maximum depth of rupture during moderate-to large-magnitude earthquakes to the premainshock background seismicity of the respective mainshock region. The calibration shows that the depth above which 99

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“…Yen and Ma 2011). According to Mai and Beroza (2000), the effective rupture length for the 2008 Wenchuan earthquake is ~240-km-long from the source model of Ji and Hayes (2008), and ~190-km-long from that of Sladen (2008). From field investigation, the surface rupture length is ~240 km from Xu et al (2009b) using a P-wave back-projection also indicated that there is a relatively low energy release (< 30% of total energy releases) to the town of Qingchuan (see Fig.…”

Section: Discussionmentioning

confidence: 99%

Multiple Event Analysis of the 2008 Mw 7.9 Wenchuan Earthquake: Implications for Variations in Radiated Seismic Energy During Faulting

Hwang¹

2013

Terr. Atmos. Ocean. Sci.

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A forward modeling of P-waves for the 2008 Wenchuan earthquake revealed at least seven sub-events that occurred during faulting with the largest event (i.e., the third sub-event) located at a position ~50 km northeast of the epicenter. Simulations of P-waves showed that it would be more appropriate to model the P-waves using thrust faulting for the first three sub-events and using strike-slip faulting for the last four. In other words, the faulting for the 2008 Wenchuan earthquake was composed substantially of two mechanisms; the former was a thrust faulting and the latter was a strike-slip rupture. The mechanical transition was near the town of Beichuan, ~100 km northeast of the epicenter. Variations in radiated seismic energy (E S ) showed the largest E S released from the fourth sub-event. Results also indicated remarkable distinctions between E S and E S0 (called the available energy). On the whole, the total E S , which was higher than E S0 estimated from static stress drop, suggested that the earthquake should be interrupted by a stress model of abrupt-locking. Further, the former thrust faulting released a relatively lower amount of E S than the latter strike-slip event. Orowan's stress model, i.e., E S ≈ E S0 , can specify former thrust ruptures implying a high rupture velocity. Because E S > E S0 for latter strike-slip ruptures, a stress model of abrupt-locking, implying higher dynamic stress drop and lower friction during an earthquake, can account for the feature of the latter ruptures. This might suggest that the 2008 Wenchuan earthquake should have a high rupture velocity, perhaps approaching the crustal Swave velocity or even higher.

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Source Scaling Properties from Finite-Fault-Rupture Models

Cited by 310 publications

References 51 publications

Analysing earthquake slip models with the spatial prediction comparison test

Analysing earthquake slip models with the spatial prediction comparison test

The Seismogenic Thickness of the Southern California Crust

Multiple Event Analysis of the 2008 Mw 7.9 Wenchuan Earthquake: Implications for Variations in Radiated Seismic Energy During Faulting

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