1997 Kamchatka earthquake explained
| 1997 Kamchatka earthquake |
| Timestamp: | 1997-12-05 11:26:53 |
| Isc-Event: | 1056468 |
| Anss-Url: | usp0008btk |
| Local-Date: | December 5, 1997 |
| Local-Time: | 23:26:53 PETT |
| Magnitude: | 7.7 |
| Depth: | 33 km |
The 1997 Kamchatka earthquake, or 1997 Kronotsky earthquake, occurred on December 5 at 11:26 UTC near the east coast of the Kamchatka Peninsula. It was an 7.7 (7.6–7.8) earthquake and was felt with intensity MM V in Petropavlovsk-Kamchatskiy. A 60 cm (23.6 in) tsunami was recorded in Kahului, 47 cm (18.5 in.) in Hilo, and 15 cm (6 in.) in Unalaska. The local tsunami generated by this earthquake affected a mostly unpopulated region. A post-tsunami survey found runup (height above normal sea level) on the Kronotsky Peninsula was no more than a few meters.[1] However, a later geological survey north of the peninsula, as well as an interview with a park ranger, indicate that runup was up to 8m (26feet) along the coast near the Little and Big Chazhma rivers and north to the Storozh River.[2]
Deformation during and after this earthquake was measured by GPS.[3] There were significant foreshocks, and also an apparently independent rupture along the southern border of the primary rupture.[4]
Further reading
- Bourgeois . Joanne . Pinegina . Tatiana K. . The 1997 Kronotsky earthquake and tsunami and their predecessors, Kamchatka, Russia . Natural Hazards and Earth System Sciences . 18 . 1 . 2018 . 1684-9981 . 10.5194/nhess-18-335-2018 . 335–350 . 2018NHESS..18..335B . free .
Notes and References
- Zayakin, Yu. A. and Pinegina, T.K., 1998. Tsunami in Kamchatka on December 5, 1997: p. 257–263 in Gordeev, E.I., Ivanov, B.V. and Vikulin, A.V., eds., 1998. Kronotskoye earthquake of December 5, 1997, on Kamchatka. Petropavlovsk-Kamchatsky: Kamchatkan State Academy of Fishing Marine, 294p. [in Russian with English abstracts and figure captions].
- Bourgeois, J., and V.V. Titov, 2001, A Fresh Look at the 1997 Kronosky Tsunami, Trans. European Geophysical Society, Abstracts. Article in preparation.
- Bürgmann, R., Kogan, M.G., Levin, V.E., Scholz, C.H., King, R.W. and Steblov, G.M., 2001. Rapid aseismic moment release following the 5 December 1997 Kronotsky, Kamchatka, earthquake: Geophys. Res. Lett., v. 28, p. 1331–1334.
- Slavina, L.B., Pivovarova, N.B. and Levina, V.I., 2007. A study in the velocity structure of December 5, 1997, Mw = 7.8 Kronotskii rupture zone, Kamchatka: : J. Volcanology & Seismology, v. 1, p. 254–262.
