Far-field simulation of the 1946 Aleutian tsunami
نویسندگان
چکیده
منابع مشابه
Far-field simulation of the 1946 Aleutian tsunami
S U M M A R Y We present hydrodynamic far-field simulations of the Aleutian tsunami of 1946 April 1, using both a dislocation source representing a slow earthquake and a dipolar one modelling a large landslide. The earthquake source is derived from the recent seismological study by López and Okal, while the landslide source was previously used to explain the exceptional run-up at Scotch Cap in ...
متن کاملDetailed analysis of tsunami waveforms generated by the 1946 Aleutian tsunami earthquake
The 1946 Aleutian earthquake was a typical tsunami earthquake which generated abnormally larger tsunami than expected from its seismic waves. Previously, Johnson and Satake (1997) estimated the fault model of this earthquake using the tsunami waveforms observed at tide gauges. However, they did not model the second pulse of the tsunami at Honolulu although that was much larger than the first pu...
متن کاملA seismological reassessment of the source of the 1946 Aleutian ‘tsunami’ earthquake
S U M M A R Y We present a re-evaluation of the seismological properties of the Aleutian ‘tsunami earthquake’ of 1946 April 1, characterized by a deceptively low conventional magnitude (7.4) in view of its catastrophic tsunami, both in the near and far fields. Relocation of 40 aftershocks show that the fault zone extends a minimum of 181 km along the Aleutian trench, in a geometry requiring a b...
متن کاملThe earthquake and tsunami of 1865 November 17: evidence for far-field tsunami hazard from Tonga
S U M M A R Y Historical reports of an earthquake in Tonga in 1865 November identify it as the only event from that subduction zone which generated a far-field tsunami observable without instruments. Run-up heights reached 2 m in Rarotonga and 80 cm in the Marquesas Islands. Hydrodynamic simulations require a moment of 4 × 1028 dyn cm, a value significantly larger than previous estimates of the...
متن کاملComment on ‘ ‘ Source of the great tsunami of 1 April 1946 : a landslide in the upper Aleutian forearc ’ ’ , by G . J . Fryer
In a recent contribution, Fryer et al. (2004) have proposed to interpret many features of the 1946 Aleutian earthquake and tsunami as evidence for a major earthquake-triggered landslide. In particular, in support of their model, they claim that the T phase observed at Hawaiian Volcano Observatory (HVO) was generated at the time of the main shock, and dispute our earlier interpretation (Okal et ...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2007
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.2007.03375.x