1983年11月16日夏威夷Kaoiki地震(Mssub>=6.6)前后的小震震源机制解
FOCAL MECHANISMS OF SMALL QUAKES BEFORE AND AFTER THE KAOIKI, HAWAII, EARTHQUAKE (Ms=6.6), NOVEMBER 16, 1983
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摘要: 1983年11月16日夏威夷Kaoiki 6.6级强震是一次近乎直立断层面上的走滑型破裂事件。然而,在主震发生前后,小震(ML3.0)的震源机制解却表现出两种类型:(1)高倾角断面上的走滑型破裂;(2)地壳内低倾角间断面上的滑动,它们随时间交替和系统地变化。Abstract: The Kaoiki, Hawaii earthquake with magnitude 6.6 of November 16, 1983 was a strike-slip faulting event on a fault with large dip angle. The mechanisms of smaller events before and after the Kaoiki mainshock show that there were two kinds of mechanisms: (1) strick-slip on the fault with large dip angle; (2) slip on the crustal discontinuity plane with small flip angle. Systematic and alternative change of the mechanisms was observed.
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[6] Lee, W. H. and Stewat, S. W., 1981. Principle attd application of microearthquake network.Advanced in geophysics, Supple. 2, Academic Press, New York.[1] Clague, D. A. and Dalrymle, G. B., 1987. The Hawaiian——Emperior volcanic chain. Volcanism in Hawaii, 5——84, U. S. Government Printing Office, Washington.
[2] Wood, H. D., 1914. On the earthquakes of 1868 in Hawaii. Bull. Seirm. Soc. Amen, 4, 169——203.
[3] Decker, R. W., 1987. Dynamic of Hawaiian volcanoes: An overview. Vofcatrirm in Hawaii, 2, 997——1018,U, S. Government Printing Office, Washington.
[4] Crosson, R. S, and Endo, E. T., 1982. Focal mechanisms and location of earthquakes in the vicinity of the 1975 Kalapana earthquake aftershock zone 19.'0——1979. Tectonics. 1, 495——542.
[5] Wyss, M., 1986. Seismic quiescence precursor to the 1983 Kaoiki (MS=6.6), Hawaii, earthquakes. Bull.Seirm. Soc. Amen, 16, 786——800.
[6] Lee, W. H. and Stewat, S. W., 1981. Principle attd application of microearthquake network.Advanced in geophysics, Supple. 2, Academic Press, New York.
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