| Autor: |
Ellsworth, W. L., Celebi, M., Evans, J. R., Jensen, E. G., Kayen, R., Metz, M. C., Nyman, D. J., Roddick, J. W., Spudich, P., Stephens, C. D. |
| Předmět: |
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| Zdroj: |
Earthquake Spectra; Aug2004, Vol. 20 Issue 3, p597-615, 19p |
| Abstrakt: |
A free-field recording of the Denali fault earthquake was obtained by the Alyeska Pipeline Service Company 3 km from the surface rupture of the Denali fault. The instrument, part of the monitoring and control system for the trans-Alaska pipeline, was located at Pump Station 10, approximately 85 km east of the epicenter. After correction for the measured instrument response, we recover a seismogram that includes a permanent displacement of 3.0 m. The recorded ground motion has relatively low peak acceleration (0.36 g) and very high peak velocity (180 cm/s). Nonlinear soil response may have reduced the peak acceleration to this 0.36 g value. Accelerations in excess of 0.1 g lasted for 10 s, with the most intense motion occurring during a 1.5-s interval when the rupture passed the site. The low acceleration and high velocity observed near the fault in this earthquake agree with observations from other recent large-magnitude earthquakes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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