Computer Science
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985rpesc.......33r&link_type=abstract
In its USSR Rept.: Earth Sci. (JPRS-UES-85-008) p 33 (SEE N86-12697 03-42) Transl. into ENGLISH from Izv. Akad. Nauk SSSR: Fiz
Computer Science
Deformation, Earthquakes, Lunar Tides, Seismic Energy, Seismic Waves, Correlation, Seismographs, Time Dependence, Variations
Scientific paper
Studies of the relationship of variations of seismicity to external effects in the past have been based primarily on data from a regional network of seismic stations, resulting in the use of only large, infrequent events. This makes it impossible to use correlation and spectral analysis methods as can be done with higher frequency seismic noise, hindering comparison of the specifics of the response of the medium on various scales. These shortcomings can be avoided by analyzing the time distribution of microearthquakes, which are repeated much more frequently. Observations with highly sensitive and independent recording apparatus were performed in an area of high seismic activity in 1981 on Kamchatka. Microearthquakes were continuously recorded for 24 hours. Analysis of the distribution of these minor earthquakes indicated that there is a correlation between seismicity and tidal effects. The presence of a system of quasiperiodic variations in seismicity was noted. The distribution of microearthquakes caried over time from statistically independent tests. The existence of microearthquakes swarms related to seismicity maxima was noted.
Rykunov A. L.
Smirnov V. B.
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