Leigh House and John Boatwright
Lamont-Doherty Geological Observatory and Department of
Geological Sciences, Columbia University
Palisades, New York
Keith Preistley1
Seismological Laboratory, Mackay School of Mines, University of
Nevada at Reno
Two moderate size earthquakes occurred within a local network of
short-period seismograph stations in the Shumagin Islands, Alaska, on
April 6, 1974.