Abstract
The slip distributions of five great Alaskan-Aleutian earthquakes of the 20th century are determined by inversion of tsunami waveforms recorded on tide gauges. These earthquakes are the 1938 Alaskan, 1946 Aleutian, 1957 Aleutian, 1964 Prince William Sound, and 1965 Rat Islands earthquakes. These earthquakes have in general not been well-studied due to a lack of seismic data. The tsunami waveform inversion gives previously unknown information about the earthquake source. The results of tsunami inversion are compared to seismic inversion results where they exist and show high correlation to the seismic results. The slip distributions show highly variable slip occurred in each earthquake. The areas of highest slip, asperities, may be the locations of future high slip in great earthquakes. This information is vital because asperities control the location of strong ground motion and the run-up height of tsunamis. These results can be used to make predictions concerning future large earthquakes.
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References
Abe, K., 1979. Size of great earthquakes of 1873–1974 inferred from tsunami data, J. Geophys. Res., 84, 1561–1568.
Beck, S. L. and D.H. Christensen,, 1991. Rupture process of the February 4, 1965, Rat Islands earthquake, J. Geophys. Res., 96, 2205–2221.
Brune, J. N. and G.R. Engen, 1969. Excitation of mantle Love waves and definition of mantle wave magnitude, Bull. Seismal. Soc. Am., 59, 923–934.
Christensen, D. H. and S.L. Beck, 1994. The rupture process and tectonic implications of the great 1964 Prince William Sound earthquake, Pure Appl. Geophys., 142, 29–53.
Davies, J., L. Sykes, L. House, and K. Jacob, 1981. Shumagin seismic gap, Alaska peninsula. History of great earthquakes, tectonic setting, and evidence for high seismic potential, J. Geophys. Res., 86, 3821–3855.
Gutenberg, B. and C.F. Richter, 1954. Seismicity of the Earth and Associated Phenomena, Hafner Publishing Co., New York.
House, L. S., L.R. Sykes, J. N., Davies, and K.H. Jacob, 1981. Identification of a possible seismic gap near Unalaska Island, eastern Aleutians, Alaska, in D. W. Simpson and P. G. Richards (eds.), Earthquake Prediction–An International Review, American Geophysical Union, Washington D.C., pp. 81–92.
Johnson, J. M. and K. Satake, 1994. Rupture extent of the 1938 Alaskan earthquake as inferred from tsunami waveforms, Geophys. Res. Lett., 21, 733–736.
Johnson, J. M. and K. Satake, 1995. Source parameters of the 1957 Aleutian and 1938 Alaskan earthquakes from tsunami waveforms, in Y. Tsudniya and N. Shuto (eds.), Tsunami: Progress in Prediction, Disaster Prevention and Warning, Kluwer Academic, Boston, pp. 71–84.
Johnson, J. M., K. Satake, S.R. Holdahl, and J. Sauber, 1996. The 1964 Prince William Sound earthquake: Joint inversion of tsunami and geodetic data, J. Geophys. Res.,in press.
Johnson, J. M., Y. Tanioka, L.J. Ruff, K. Satake, H. Kanamori, and L.R. Sykes, 1994. The 1957 great Aleutian earthquake, Pure Appl. Geophys., 142, 3–28.
Kanamori, H., 1972 Mechanism of tsunami earthquakes, Phys. Earth Planet. Inter., 6, 246–259.
Kanamori, H., 1977. The energy release in great earthquakes, J. Geophys. Res., 82, 2981–2987.
Kikuchi, M. and Y. Fukao, 1987. Inversion of long-period P-waves from great earthquakes along subduction zones, Tectonophysics, 144, 231–247.
Lay, T. and H. Kanamori, 1981. An asperity model of large earthquake sequences, in D. W. Simpson and P. G. Richards (eds.), Earthquake Prediction–An International Review, American Geophysical Union, Washington D.C., pp. 579–592.
McCann, W. R., S.P. Nishenko, L.R. Sykes, J. Krause, J., 1979. Seismic gaps and plate tectonics: Seismic potential for major boundaries, Pure Appl. Geophys., 117, 1082–1147.
Okada, Y., 1985. Surface deformation due to shear and tensile faults in a half-space, Bull. Seismal. Soc. Am., 75, 1135–1154.
Okal, E. A., 1992. Use of mantle magnitude Mm for the reassessment of the moment of historical earthquakes I: Shallow events, Pure Appl. Geophys., 139, 17–57.
Ruff, L. and H. Kanamori, 1983. The rupture process and asperity distribution of three great earthquakes from long-period diffracted P-waves, Phys. Earth Planet. Inter., 31, 202–230.
Satake, K., 1987. Inversion of tsunami waveforms for the estimation of a fault heterogeneity: Method and numerical experiments J. Phys. Earth, 35, 241–254.
Satake, K., 1989. Inversion of tsunami waveforms for the estimation of heterogeneous fault motion of large submarine earthquakes: The 1968 Tokadii-oki and the 1983 Japan Sea earthquakes, J. Geophys. Res., 94, 5627–5636.
Sykes, L, 1971. Aftershock zones of great earthquakes, seismicity gaps, and earthquake prediction for Alaska and the Aleutians, J. Geophys. Res., 76, 8021–8041.
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© 1997 Springer Science+Business Media Dordrecht
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Johnson, J.M., Satake, K. (1997). Asperity Distribution of Alaskan-Aleutian Earthquakes: Implications for Seismic and Tsunami Hazards. In: Hebenstreit, G. (eds) Perspectives on Tsunami Hazard Reduction. Advances in Natural and Technological Hazards Research, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8859-1_5
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DOI: https://doi.org/10.1007/978-94-015-8859-1_5
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