Surface rupture of the 2002 Denali fault, Alaska, earthquake and comparison with other strike-slip ruptures
Earthquake Spectra
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Abstract
On 3 November 2002, an M7.9 earthquake produced 340 km of surface rupture on the Denali and two related faults in Alaska. The rupture proceeded from west to east and began with a 40-km-long break on a previously unknown thrust fault. Estimates of surface slip on this thrust are 3-6 m. Next came the principal surface break along ???218 km of the Denali fault. Right-lateral offsets averaged around 5 m and increased eastward to a maximum of nearly 9 m. The fault also ruptured beneath the trans-Alaska oil pipeline, which withstood almost 6 m of lateral offset. Finally, slip turned southeastward onto the Totschunda fault. Right-lateral offsets are up to 3 m, and the surface rupture is about 76 km long. This three-part rupture ranks among the longest strike-slip events of the past two centuries. The earthquake is typical when compared to other large earthquakes on major intracontinental strike-slip faults. ?? 2004, Earthquake Engineering Research Institute.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Surface rupture of the 2002 Denali fault, Alaska, earthquake and comparison with other strike-slip ruptures |
| Series title | Earthquake Spectra |
| DOI | 10.1193/1.1775797 |
| Volume | 20 |
| Issue | 3 |
| Year Published | 2004 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Earthquake Spectra |
| First page | 565 |
| Last page | 578 |
| Google Analytic Metrics | Metrics page |