Explosion Effects and Earthquakes in the Amchitka Island Region

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Science  24 Sep 1971:
Vol. 173, Issue 4003, pp. 1232-1235
DOI: 10.1126/science.173.4003.1232


Microearthquakes were monitored by a network of seismographs located on Amchitka and nearby islands; the nature of earthquake activity in this region was found to be consistent with the hypothesis of underthrusting of the Aleutian arc by a rigid lithospheric plate. Seismic effects of the nuclear explosion Milrow were small, of short duration, confined to the region immediate to the explosion, and were apparently independent of this geotectonic mechanism.