Abstract
A Method for finding areas with the highest risks of near-future earthquakes, from data of observed past earthquakes, have been desired. The presented Fatal Fault Finder (F 3) finds risky active faults by applying KeyGraph, which was presented as a document indexing algorithm, to a sequence of focal faults of earthquakes in stead of a document. This strategy of F 3 is supported by analogies between a document and an earthquake sequence: The occurrences of words in a document and of earthquakes in a sequence have common causal structures, and KeyGraph previously indexed documents taking advantage of the causal structure in a document. As an effect, risky faults are obtained from an earthquake sequence, in a similar manner as keywords are obtained from a document, by KeyGraph. The empirically obtained risky faults by F 3 corresponded finely with real earthquake occurrences and seismologists’ risk estimations.
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Ohsawa, Y., Yachida, M. (1999). Discover Risky Active Faults by Indexing an Earthquake Sequence. In: Arikawa, S., Furukawa, K. (eds) Discovery Science. DS 1999. Lecture Notes in Computer Science(), vol 1721. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-46846-3_19
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DOI: https://doi.org/10.1007/3-540-46846-3_19
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