Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/10274632-EBAF-4480-82C7-F337EABE38EE | ||
| Year | 2004 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | E. A. Okal, J Borrero , C. E. Synolakis,"The earthquake and tsunami of 1865 November 17: evidence for far-field tsunami hazard from Tonga",Geophys. J. Int. , vol. 157 ,no.1,pp.164-174,2004. doi: 10.1111/j.1365-246X.2004.02177.x https://doi.org/10.1111/j.1365-246X.2004.02177.x | ||
| Appears in Collections |
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 maximum size of earthquake to be expected at the Tonga subduction zone. This warrants an upwards re-evaluation of the tsunami risk from Tonga to the Cook Islands and the various Polynesian chains, which had hitherto been regarded as minor.
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