- journal_title：Bulletin of the Seismological Society of America
- Contributor：Gail M. Atkinson ; Alireza Babaie Mahani
- Publisher：Seismological Society of America
- Date：2013-02-01
- Format：text/html
- Language：en
- Identifier：10.1785/0120120182
- journal_abbrev：Bulletin of the Seismological Society of America
- issn：0037-1106
- volume：103
- issue：1
- firstpage：107
- section：Articles
We present a simple and robust approach to estimate moment magnitude (M) for events of M<6 from regional seismographic observations (vertical component), recorded in the distance range from 100 to 400 km. M can be estimated from 1‐Hz response spectral amplitudes for events in North America with an uncertainty (standard deviation of residuals) of <0.2 units in most regions, using the simple relationships provided herein. Advantages of the method are that it allows for consistent estimation of M across regions, and that it provides relationships that are consistent with the predictions of a stochastic point‐source model for typical regional attenuation models.
Online Material: Table of events for which the moment magnitude was estimated.