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Open-File Report 02-109

Modified Mercalli Intensities (MMI) for Some Earthquakes in Eastern North America (ENA) and Empirical MMI Site Corrections for Towns in ENA

By W.H. Bakun, A.C. Johnston, and M.G. Hopper

Thumbnail of and link to report PDF (304 kB)Abstract

Modified Mercalli Intensity (MMI) assignments for earthquakes in eastern North America (ENA) were used by Bakun et al. (submitted) to develop a model for eastern North America for estimating the location and moment magnitude M of earthquakes from MMI observations. MMI assignments for most of the earthquakes considered by Bakun et al. (submitted) are published. MMI assignments for 6 other earthquakes used by Bakun et al. (submitted) are listed in this report: November 18, 1755 near Cape Ann, Massachusetts; January 5, 1843 near Marked Tree, Arkansas; October 31, 1895 in southern Illinois; November 18, 1929 on the Grand Banks, Newfoundland; September 26, 1990 in southeast Missouri; and May 4, 1991 near Risco, Missouri. MMI empirical site corrections developed and used by Bakun et al. (submitted) are also listed in this report.

First posted March 4, 2002

  • Table 1 PDF (6 kB)
    MMI for November 18, 1755 earthquake near Cape Ann, Massachusetts. 1 page.
  • Table 2 PDF (8 kB)
    MMI for January 5, 1843 earthquake near Marked Tree, Arkansas. 2 pages.
  • Table 4 PDF (12 kB)
    MMI for November 18, 1929 earthquake on the Grand Banks, Newfoundland. 4 pages.
  • Table 7 PDF (156 kB)
    Empirical MMI site corrections for towns and cities in eastern North America. 33 pages

For additional information, contact:
Earthquake Science Center, Menlo Park
U.S. Geological Survey
345 Middlefield Road MS 977
Menlo Park, California 94025

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Suggested citation:

Bakun, W. H., Johnston, A. C., Hopper, M. G., 2002, Modified Mercalli Intensities (MMI) for Some Earthquakes in Eastern North America (ENA) and Empirical MMI Site Corrections for Towns in ENA: U.S. Geological Survey Open-File Report 02-109, 71 pp., https://pubs.usgs.gov/of/2002/0109/.


 


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