Accession Number:

AD0786483

Title:

Research in Seismology: Earthquake Magnitudes

Descriptive Note:

Corporate Author:

SAINT LOUIS UNIV MO DEPT OF EARTH AND ATMOSPHERIC SCIENCES

Personal Author(s):

Report Date:

1974-07-19

Pagination or Media Count:

32.0

Abstract:

The report describes research on the applicability of the mbMs method to discriminate between small-magnitude earthquake and explosions in Eurasia. The report presents a formula, valid on a world-wide basis, which enables the Ms threshold to be lowered to 2.8. When the formula was applied to the data from moderate- to high-yield Eurasian explosions, it was found that the mbMs curve for those events is the same as for Nevada Test Site events. Data are presented for some presumed Eurasian earthquakes whose mbMs values place them in the explosion population.

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE