A Typical Foreshock and Aftershock Anomaly: Observations, Interpretation, and Applications

Rodkin, M. B.

doi:10.1134/s0742046320010066

Cited by 6 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A complex of precursor anomalies has been identified by the GVLE method using data of world and regional earthquake catalogs. The list of identified anomalies includes a weak background increase in seismic activity, the development of a foreshock power-law cascade, increasing in the average magnitude of earthquakes, the "shadow" of precursor seismic activity, clustering of strong (and main) earthquakes and some other anomalies [10][11][12][13]. The clustering was examined in more detail for this region (Sakhalin and Kuril Islands); the presence of the clustering effect was shown both for the strongest earthquakes [14] and for a larger set of main events after the removal of aftershocks [15].…”

Section: Discussionmentioning

confidence: 99%

“…The existence of a set of typical common features in the foreshock-aftershock process was confirmed, and some details of these processes were revealed or verified by the method of construction and analysis of the generalized vicinity of a large earthquake (GVLE) [10][11][12][13]. The idea of this method is to carry out a scaled aggregation of data from a large number of individual foreshock and aftershock sequences into a generalized foreshock-aftershock sequence.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Types of strong earthquake precursor behavior obtained from world and regional catalogs of earthquakes

Родкин

Andreeva

Liperovskaya

2021

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Typical features of seismicity inherent to the period prior to the strong earthquake occurrence are examined using the regional and world-wide earthquake catalogs by the method of construction of the Generalized vicinity of a large earthquake (GVLE). These features are foreshock power-law cascade, the weak long-term background increase in seismic activity, and the definite clustering of the main events. Worth to note, that all these features appear to indicate the loss of a stability of a system, without any reference to the physical mechanism of development of the instability. Thus, these features are expected to occur in connection with the bifurcation points in systems of other physical nature, examples of such behavior are given. Besides, a tendency of a decrease in earthquakes depth in the close GVLE vicinity was found. This precursor feature has a specific character and evidences in favor of a fluid involvement in the mechanism of earthquake occurrence.

show abstract