Abstract
Following the recent reports by YUAN et al. (2005) of recordings of the 2004 Sumatra tsunami on the horizontal components of coastal seismometers in the Indian Ocean basin, we build a much enhanced dataset extending into the Atlantic and Pacific Oceans, as far away as Bermuda and Hawaii, and also expanded to five additional events in the years 1995–2006. In order to interpret these records quantitatively, we propose that the instruments are responding to the combination of horizontal displacement, tilt and perturbation in gravity described by GILBERT (1980), and induced by the passage of the progressive tsunami wave over the ocean basin. In this crude approximation, we simply ignore the island or continent structure, and assume that the seismometer functions de facto as an ocean-bottom instrument. The records can then be interpreted in the framework of tsunami normal mode theory, and lead to acceptable estimates of the seismic moment of the parent earthquakes. We further demonstrate the feasibility of deconvolving the response of the ocean floor in order to reconstruct the time series of the tsunami wave height at the surface of the ocean, suggesting that island or coastal continental seismometers could complement the function of tsunameters.
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References
Ben-Menahem, A. and Rosenman, M. (1972), Amplitude patterns of tsunami waves from submarine earthquakes, J. Geophys. Res. 77, 3097–3128.
Chave, A.D., Duennebier, F.K., Butler, R., Petitt, R.A., Jr., Wooding, F.B., Harris, D., Bailey, J.W., Hobart, E., Jolly, J., Bowen, A.D. and Yoerger, D.R., H2O: The Hawaii-2 Observatory. In Science-technology Synergy for Research in the Marine Environment: Challenges for the XXIst Century (eds. L. Beranzoli, P. Favali, and G. Smriglio), Devel. Mar. Tech. Ser., 12, pp. 83–92 (Elsevier, Amsterdam, 2002).
Dahlen, F.A. and Tromp, J. Theoretical Seismology (Princeton Univ. Press, 1998, 1025 pp.)
Davies, D. (1968), When did the Seychelles leave India? Nature 220, 1225–1226.
Du Toit, A.L., Our Wandering Continents, 366 pp. (Oliver & Boyd, London, 1937).
Dziewonski, A.M. and Anderson, D.L. (1981), Preliminary Earth Reference Model, Phys. Earth Planet. Inter. 25, 297–356.
Gilbert, F., An introduction to low-frequency seismology. In Proc. Intl. School Phys. “Enrico Fermi”, 78 (eds. A.M. Dziewonski and E. Boschi), pp. 41–81 (North Holland, Amsterdam, 1980).
González, F.I., Bernard, E.N., Meinig, C., Eble, M.C., Mofjeld, H.O. and Stalin, S. (2005), The NTHMP Tsunameter network, Natural Hazards 35, 25–39.
Guibourg, S., Heinrich, P., and Roche, R. (1997), Numerical modeling of the 1995 Chilean tsunami. Impact on French Polynesia, Geophys. Res. Lett. 24, 775–778.
Hanson J.A. and Bowman, J.R. (2005), Dispersive and reflected tsunami signals from the 2004 Indian Ocean tsunami observed on hydrophones and seismic stations, Geophys. Res. Lett. 32(17), L17606, 5 pp.
Kerr, R.A. (2005), Model shows islands muted tsunami after latest Indonesian earthquake, Science 308, 341.
La Rocca, M., Galluzzo, D., Saccorotti, G., Tinti, S., Cimini, G.B., and Del Pezzo E. (2004), Seismic signals associated with landslides and with a tsunami at Stromboli Volcano, Italy, Bull. Seismol. Soc. Amer. 94, 1850–1867.
Lundgren, P.R. and Okal, E.A. (1988), Slab decoupling in the Tonga arc: the June 22, 1977 earthquake, J. Geophys. Res. 93, 13355–13366.
Matsutomi, H., Shuto, N., Imamura, F., and Takahashi, T. (2001), Filed survey of the 1996 Irian Jaya earthquake tsunami on Biak Island, Nat. Haz. 24, 199–212.
Okal, E.A. (1982), Mode-wave equivalence and other asymptotic problems in tsunami theory, Phys. Earth Planet. Inter. 30, 1–11.
Okal, E.A. (1988), Seismic parameters controlling far-field tsunami amplitudes: A review, Natural Hazards 1, 67–96.
Okal, E.A. (1991), Erratum [to “Seismic parameters controlling far-field tsunami amplitudes: A review”], Natural Hazards 4, 433.
Okal, E.A. (2003), Normal modes energetics for far-field tsunamis generated by dislocations and landslides, Pure Appl. Geophys. 160, 2189–2221.
Okal, E.A. and Talandier, J. (1989), M m: A variable period mantle magnitude, J. Geophys. Res. 94, 4169–4193.
Okal, E.A. and Titov, V.V. (2007), M TSU: Recovering seismic moments from tsunameter records, Pure Appl. Geophys., 164, 355–378.
Okal, E.A., Dengler, L., Araya, S., Borrero, J.C., Gomer, B., Koshimura, S., Laos, G., Olcese, D., Ortiz, M., Swensson, M., Titov, V.V., and Vegas, F. (2002), A field survey of the Camana, Peru tsunami of June 23, 2001, Seismol. Res. Lett. 73, 904–917.
Okal, E.A., Fritz, H.M., Raveloson, R., Joelson, G., Pančošková, P., and Rambolamanana, G. (2006a), Field survey of the 2004 Indonesian tsunami in Madagascar, Earthquake Spectra 22, S263–S283.
Okal, E.A., Sladen, A., and Okal, E.A.-S. (2006b), Field survey of the 2004 Indonesian tsunami on Rodrigues, Mauritius, and Réunion Islands, Earthquake Spectra 22, S241–S261.
Okal, E.A., Talandier, J., and Reymond, D. (2007) Quantification of hydrophone records of the 2004 Sumatra tsunami, Pure Appl. Geophys. 164, 309–323.
Saito, M. (1967), Excitation of free oscillations and surface waves by a point source in a vertically heterogeneous Earth, J. Geophys. Res. 72, 3689–3699.
Satake, K. (1988), Effects of bathymetry on tsunami propagation: Application of ray tracing to tsunamis, Pure Appl. Geophys. 126, 28–35.
Scharroo, R., Smith, W.H.F., Titov, V.V., and Arcas, D. (2005) Observing the Indian Ocean tsunami with satellite altimetry, Geophys. Res. Abstr. 7, 230 (abstract).
Stein, S. and Okal, E.A. (2005), Size and speed of the Sumatra earthquake, Nature 434, 581–582.
Synolakis, C.E., Bardet, J.-P., Borrero, J.C., Davies, H.L., Okal, E.A., Silver, E.A., Sweet, S., and Tappin, D.R. (2002), The slump origin of the 1998 Papua New Guinea tsunami, Proc. Roy. Soc. (London), Ser. A 458, 763–789.
Talandier, J. and Okal, E.A. (1979), Human perception of T waves: the June 22, 1977 Tonga earthquake felt on Tahiti, Bull. Seismol. Soc. Amer. 69, 1475–1486.
Titov, V.V., Rabinovich, A.B., Mofjeld, H.O., Thomson, R.E., and González, F.I. (2005), The global reach of the 26 December 2004 Sumatra tsunami, Science 309, 2045–2048.
Tsai, V.C., Nettles, M., Ekström, G., and Dziewoński, A.M. (2005), Multiple CMT source analysis of the 2004 Sumatra earthquake, Geophys. Res. Lett. 32(17), L17304, 4 pp.
Ward, S.N. (1980), Relationships of tsunami generation and an earthquake source, J. Phys. Earth 28, 441–474.
Wegener, A.L., Die Entstehung der Kontinente und Ozeane (Vieweg, Braunschweig, 1915).
Woods, M.T. and Okal, E.A. (1987) Effect of variable bathymetry on the amplitude of teleseismic tsunamis: a ray-tracing experiment, Geophys. Res. Lett. 14, 765–768.
Wessel, P. and Smith, W.H.F. (1991), Free software helps map and display data, Eos, Trans. Amer. Geophys. Un. 72, 441 and 445–446.
Yuan, X., Kind, R., and Pedersen, H. (2005), Seismic monitoring of the Indian Ocean tsunami, Geophys. Res. Lett. 32(15), L15308, 4 pp.
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Okal, E.A. (2007). Seismic Records of the 2004 Sumatra and Other Tsunamis: A Quantitative Study. In: Satake, K., Okal, E.A., Borrero, J.C. (eds) Tsunami and Its Hazards in the Indian and Pacific Oceans. Pageoph Topical Volumes. Birkhäuser Basel. https://doi.org/10.1007/978-3-7643-8364-0_4
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DOI: https://doi.org/10.1007/978-3-7643-8364-0_4
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