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Universality of the Seismic Moment-frequency Relation
Abstract—We analyze the seismic moment-frequency relation in various depth ranges and for different seismic regions, using Flinn-Engdahl's regionalization of global seismicity. Three earthquake listsExpand
Importance of small earthquakes for stress transfers and earthquake triggering
[1] We estimate the relative importance of small and large earthquakes for static stress changes and for earthquake triggering, assuming that earthquakes are triggered by static stress changes andExpand
Plate-Tectonic Analysis of Shallow Seismicity: Apparent Boundary Width, Beta, Corner Magnitude, Coupled Lithosphere Thickness, and Coupling in Seven Tectonic Settings
A new plate model is used to analyze the mean seismicities of seven types of plate boundary (crb, continental rift boundary; ctf, continental transform fault; ccb, continental convergent boundary;Expand
Seismic moment distribution revisited: I. Statistical results
SUMMARY An accumulation of seismic moment data gathered over the previous decade justifies a new attempt at a comprehensive statistical analysis of these data: herein, more rigourous statisticalExpand
Aftershock Zone Scaling
We investigate the distribution of aftershock zones for large earthquakes (scalar seismic moment M ≥10 19.5 N m, moment magnitude, m ≥7). Mainshocks are selected from the Harvard centroid momentExpand
Short-Term Properties of Earthquake Catalogs and Models of Earthquake Source
I review the short-term properties of earthquake catalogs, in particular the time and size distributions and the completeness of the early part of aftershock sequences for strong, shallowExpand
Comparison of Short-Term and Time-Independent Earthquake Forecast Models for Southern California
We have initially developed a time-independent forecast for southern California by smoothing the locations of magnitude 2 and larger earthquakes. We show that using small m 2 earthquakes gives aExpand
Regression problems for magnitudes
SUMMARY Least-squares linear regression is so popular that it is sometimes applied without checking whether its basic requirements are satisfied. In particular, in studying earthquake phenomena, theExpand
Seismic moment‐frequency relation for shallow earthquakes: Regional comparison
We determine the parameter values for the seismic moment-frequency relation using Flinn-Engdahl's regionalization of global seismicity and the Harvard centroid-moment tensor data. The earthquake sizeExpand
Tohoku earthquake: a surprise?
Abstract We consider three questions related to the 2011 Tohoku mega‐earthquake: (1) Why was the event size so grossly underestimated by Japan’s national hazard map? (2) How should we evaluate theExpand
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