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Analysis of the tsunami generated by the 2007 Noto Hanto earthquake
Earth, Planets and Space volume 60, pages123–125(2008)
The 2007 Noto Hanto earthquake generated a small tsunami that was recorded at several tide gauge stations along the coast of the Japan Sea. The most important feature of this tsunami is that two waveforms recorded at the Wajima and Noto tide gauge stations, which are located 30 km apart, showed very different later phases—the large later phases recorded at Noto were not observed at Wajima. Numerical simulation of the tsunami indicated that the difference was caused by the shallow water bathymetry around the Noto peninsula. The large tsunami that was amplified at a few tens of kilometers off the north coast of the Noto peninsula propagated towards the Noto tide gauge station, but not towards the Wajima station. This study indicates that the propagation of a tsunami caused by a shallow earthquake beneath a coastal area is significantly affected by the local bathymetry. A comparison of the observed and computed tsunami waveforms indicated that the slip amount of the fault was 0.8 m. The seismic moment of the Noto Hanto earthquake was calculated to be 0.94 × 1019 N m (Mw 6.6).
Geographical Survey Institute, Related repots for the 2007 Noto Hanto earthquake, http://www.gsi.go.jp/BOUSAI/isikawa/index.html, 2007 (in Japanese).
Gonzalez, I. F., K. Satake, E. F. Boss, and H. O. Mofjeld, Edge wave and non-trapped modes of the 25 April 1992 Cape Mendocino Tsunami, Pure Appl. Geophys., 144, 409–426, 1995.
Japan Meteorological Agency, Evaluation of the 2007 Noto Hanto earthquake, http://www.jishin.go.jp/main/chousa/07mar_noto/index.htm, 2007 (in Japanese).
Johnson, J. M., Heterogeneous coupling along Alaska-Aleutians as inferred from tsunami, seismic, and geodetic inversions, Adv. Geophys., 39, 1–110, 1998.
Okada, Y., Surface deformation due to shear and tensile faults in a halfspace, Bull. Seismol. Soc. Am., 75, 1135–1154, 1985.
Tanioka, Y. and K. Katsumata, Tsunami generated by the 2004 Kushiro-oki earthquake, Earth Planets Space, 59, e1–e3, 2007.
Yamanaka, K., RSVD seismology notes, http://www.eri.u-tokyo.ac.jp/sanchu/SeismoNote/2007/RSVD1.html, 2007 (in Japanese).
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Tanioka, Y. Analysis of the tsunami generated by the 2007 Noto Hanto earthquake. Earth Planet Sp 60, 123–125 (2008) doi:10.1186/BF03352772
- 2007 Noto Hanto earthquake
- tsunami numerical simulation