On October 28, 1891 the Neodani fault system ruptured for over 80 km to generate the Great Nobi earthquake [M 8.0]. Koto [1983: see Yeats, Sieh, and Allen (1996), p. 114-115] first depicted the offset and is famous for the reference by Richter [1958]. The fault is one of the most spectacular examples of surface faulting in modern Japan.
Since 1995, Awata, Okumura, and others are conducting detailed paleoseismological and topographic survey to evaluate the activity and to establish a ruputure model. The work is under way.
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