Abstract
We numerically simulate seismic wave propagation from the 1999 Mw 7.4 earthquake in Izmit, Turkey, using a 3D finite difference method based on published finite-source models obtained by waveform inversions. This earthquake has been reported, based on observations at the near-fault station SKR, as an example of supershear rupture propagation toward the east. Although the modeled ground motion does show a characteristic Mach wave from the fault plane, it is difficult to identify any particular effects in terms of peak ground velocity (PGV), an important parameter in earthquake engineering. This is because the fault's spatial heterogeneity is strong enough to mask the properties of supershear rupture, which has been reported through several numerical simulations mostly based on homogeneous fault conditions. This article demonstrates the importance of studying ground motions for known earthquakes through numerical simulations based on finite-fault source models.
| Original language | English |
|---|---|
| Pages (from-to) | 726-741 |
| Number of pages | 16 |
| Journal | Bulletin of the Seismological Society of America |
| Volume | 101 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 2011 |
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Keywords
- earthquake engineering
- earthquake rupture
- fault conditions
- fault planes
- finite sources
- ground motions
- near-fault
- numerical simulation
- peak ground velocity
- source models
- spatial heterogeneity
- supershear rupture
- waveform inversion
Cite this
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Influence of super-shear earthquake rupture models on simulated near-source ground motion from the 1999 Izmit, Turkey, earthquake. / Aochi, Hideo; Durand, Virginie; Douglas, John.
In: Bulletin of the Seismological Society of America, Vol. 101, No. 2, 04.2011, p. 726-741.Research output: Contribution to journal › Article
TY - JOUR
T1 - Influence of super-shear earthquake rupture models on simulated near-source ground motion from the 1999 Izmit, Turkey, earthquake
AU - Aochi, Hideo
AU - Durand, Virginie
AU - Douglas, John
PY - 2011/4
Y1 - 2011/4
N2 - We numerically simulate seismic wave propagation from the 1999 Mw 7.4 earthquake in Izmit, Turkey, using a 3D finite difference method based on published finite-source models obtained by waveform inversions. This earthquake has been reported, based on observations at the near-fault station SKR, as an example of supershear rupture propagation toward the east. Although the modeled ground motion does show a characteristic Mach wave from the fault plane, it is difficult to identify any particular effects in terms of peak ground velocity (PGV), an important parameter in earthquake engineering. This is because the fault's spatial heterogeneity is strong enough to mask the properties of supershear rupture, which has been reported through several numerical simulations mostly based on homogeneous fault conditions. This article demonstrates the importance of studying ground motions for known earthquakes through numerical simulations based on finite-fault source models.
AB - We numerically simulate seismic wave propagation from the 1999 Mw 7.4 earthquake in Izmit, Turkey, using a 3D finite difference method based on published finite-source models obtained by waveform inversions. This earthquake has been reported, based on observations at the near-fault station SKR, as an example of supershear rupture propagation toward the east. Although the modeled ground motion does show a characteristic Mach wave from the fault plane, it is difficult to identify any particular effects in terms of peak ground velocity (PGV), an important parameter in earthquake engineering. This is because the fault's spatial heterogeneity is strong enough to mask the properties of supershear rupture, which has been reported through several numerical simulations mostly based on homogeneous fault conditions. This article demonstrates the importance of studying ground motions for known earthquakes through numerical simulations based on finite-fault source models.
KW - earthquake engineering
KW - earthquake rupture
KW - fault conditions
KW - fault planes
KW - finite sources
KW - ground motions
KW - near-fault
KW - numerical simulation
KW - peak ground velocity
KW - source models
KW - spatial heterogeneity
KW - supershear rupture
KW - waveform inversion
UR - http://www.scopus.com/inward/record.url?scp=79953045922&partnerID=8YFLogxK
UR - http://bssa.geoscienceworld.org/
U2 - 10.1785/0120100170
DO - 10.1785/0120100170
M3 - Article
VL - 101
SP - 726
EP - 741
JO - Bulletin of the Seismological Society of America
JF - Bulletin of the Seismological Society of America
SN - 0037-1106
IS - 2
ER -