Seismic moment (M0) is a parameter related to the physical process that takes place at the source (Aki 1966; Aki and Richards 1980). Sometimes it is possible to calculate M0 from the constant spectral amplitude level at low frequencies, but in other cases this is not possible. For instance, for M > 4.0 earthquakes (recorded at short distances), it is difficult to determine the flat portion of the spectrum due to instrumental limitations. For these cases, waveform modeling is an alternative way to evaluate M0. In addition to determining this source...

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.