Key points are not available for this paper at this time.
An effort is made to improve Benioff's method for investigationof strain release in aftershock sequences. The improvementmay be summarized as follows:1. Earthquake volume increases with magnitude, instead of beingconstant. A relation is given, relating volume to magnitude.2. A revised energy-magnitude formula is used.3. The seismic gain ratio, i. e. the ratio between seismic energy andelastic strain energy, probably increases with magnitude, instead of beingconstant. Likewise, the ratio of fault plane area of the main shock to thevertical section through the aftershock volume increases with magnitude.4. The seismic energy density, the elastic strain energy density aswell as strain are independent of magnitude.5. The deformation, i. e. the total strain in the aftershock zone, increaseswith magnitude at the same rate as seismic energy and volume do.As a consequence of these improvements some earlier published strainrelease characteristics are reconstructed, this time as deformation characteristicsinstead.
Båth et al. (Tue,) studied this question.