Regional relationships among earthquake magnitude scales

Relationships Among Magnitudes and Seismic Moment of Earthquakes in the Taiwan Region

“…There are some relationships among source parameters (Chung and Bernreuter 1981;Wang 1992). This concept can be illustrated by the scaling law proposed by Aki (1967).…”

“…Koyama (1994) However, the relationships should be of regional dependence (cf. Chung and Bernreuter 1981). The interrelations among various source parameters may display regional characteristics.…”

Review of earthquake hazard assessments of plant sites at Paducah, Kentucky and Portsmouth, Ohio

“…However, since that time, the effect of frequency on the mb(Lg) formula has become well known and modem estimates should be made properly. Chung and Bernreuter (1981) stated that, while differences due wave types in mb and mb(Lg) (body waves versus surface waves) might be expected to result in some differences between the two scales, the available published data indicated good agreement as long as enough stations were used to ensure that azimuthal variations average out. Within the scatter of data, Figure 4 shows that, while Figure 5 indicates that M and mb(Lg) are not equal.…”

“…During the past two decades, considerable attention has been devoted to biases present in the global or regional results from individual scales and to the relationships between the various individual scales (see, e.g., Evenden and Kohler (1976), Chinnery (1978), Der and others (1979), Herrmann and Nuttli (1982), Chung and Bernreuter (1981), Nuttli and Herrmann (1982), Chulick andHerrmann (1986), Ekstr?m andDziewonski (1988)). Some of these studies lead to differing or contradictory results.…”

Rupture Process of Subduction-Zone Earthquakes

“…Gutenberg 1945, Gutenberg &Richter 1956) extended the magnitude scale to earthquakes worldwide and developed various empirical scales. One of the most widely used scales is the surfacewave magnitude Ms, which is defined by the amplitude of surface waves with a period of about 20 s. (For more details on magnitude scales, see Geller & Kanamori 1977, Bath 1981, Abe 1981, Chung & Bernreuter 1981, Kanamori 1983 An important empirical relation is the magnitude-energy relation obtained by Gutenberg & Richter (1956) log E s = 1.5M s + 11.8,…”