Bulletin of the Seismological Society of America; August 2001; v. 91; no. 4;
p. 870-874; DOI: 10.1785/0120000227
© 2001 Seismological Society of America
New Evidence on the Fractal Pattern of Sumatra Fault Seismicity and Its Possible Application to Earthquake Prediction
Sigit Sukmono
Department of Geophysical Engineering
Institute of Technology Bandung
Jl. Ganesha 10 Bandung 401323
sigit{at}bdg.centrin.net.id
sukmono{at}gf.itb.ac.id
Manuscript received 20 August 2000.
Sukmono et al. (1997) suggested that there is a repetitive pattern, called the fractal pattern of the Sumatra Fault System (SFS) seismicity, correlating the times of large shallow earthquakes (depth
50 km, 5
mb
7.0) that occurred along SFS segments with fault segment geometric fractal dimension (D) values. By using this repetitive pattern, two earthquakes that occurred between 1995 and 1996 in the SFS were successfully predicted. Since this 1997 article, there have been four large shallow earthquakes that have occurred in the SFS, e.g., in the Aceh (three times) and Kepahiang segments. These four earthquakes follow the suggested fractal pattern of SFS seismicity and hence again show the applicability of this pattern to long-term earthquake prediction along the SFS.
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