Aftershocks of the 4 February 1965 Rat Island Earthquake

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Science  04 Jun 1965:
Vol. 148, Issue 3675, pp. 1323-1325
DOI: 10.1126/science.148.3675.1323


Studies of earthquake aftershocks as a function of space, time, and rate of energy release (magnitude) afford new evidence of earth structure. The sharp boundary conditions of the epicenter locations suggest block faulting about the Rat Islands as a subsystem of the Aleutian Islands arc structure. Earthquake frequency of occurrence in time and magnitude are given.