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The 1981 microearthquake swarm near Moodus, Connecticut
Author(s) -
Ebel John E.,
Vudler Vladimir,
Celata Michael
Publication year - 1982
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl009i004p00397
Subject(s) - microearthquake , seismology , magnitude (astronomy) , aftershock , geology , foreshock , earthquake swarm , swarm behaviour , shock (circulatory) , induced seismicity , physics , medicine , mathematical optimization , mathematics , astronomy
From August through October, 1981 an intense microearthquake swarm of over 500 events was detected near Moodus, Connecticut, the site of persistent small earthquake activity throughout the historical record. The swarm consisted of 39 foreshocks which preceeded the magnitude 2.1 mainshock, a normal pattern of aftershocks which immediately followed the main shock, and later smaller bursts of microearthquakes associated with migrations of the event epicenters. The shocks were all within 1 km of the earth's surface and located along a 5 km long segment of the Salmon River. Earthquakes of magnitude less than 1 were felt and events as small as magnitude 0 were heard by people living near the epicenters.