Journal
EARTHQUAKE SPECTRA
Volume 29, Issue -, Pages S1-S21Publisher
EARTHQUAKE ENGINEERING RESEARCH INST
DOI: 10.1193/1.4000115
Keywords
-
Categories
Funding
- Geotechnical Extreme Events Reconnaissance (GEER) Association
- National Science Foundation
- USGS, through NEHRP
- Grants-in-Aid for Scientific Research [23241054] Funding Source: KAKEN
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0825760] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0825734] Funding Source: National Science Foundation
Ask authors/readers for more resources
The M(w)9.0 Tohoku-oki Japan earthquake produced approximately 2,000 ground motion recordings. We consider 1,238 three-component accelerograms corrected with component-specific low-cut filters. The recordings have rupture distances between 44 km and 1,000 km, time-averaged shear wave velocities of V-S30 90 m/s to 1,900 m/s, and usable response spectral periods of 0.01 sec to > 10 sec. The data support the notion that the increase of ground motions with magnitude saturates at large magnitudes. High-frequency ground motions demonstrate faster attenuation with distance in backarc than in forearc regions, which is only captured by one of the four considered ground motion prediction equations for subduction earthquakes. Recordings within 100 km of the fault are used to estimate event terms, which are generally positive (indicating model underprediction) at short periods and zero or negative (overprediction) at long periods. We find site amplification to scale minimally with V-S30 at high frequencies, in contrast with other active tectonic regions, but to scale strongly with V-S30 at low frequencies.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available