It is well known that there is a cyclic variation in distance between earth and moon. This cyclic variation leads to cyclic fluctuation in gravitational force between earth and moon. The effect is disturbance in ocean water body giving rise to tide. There may be fatigue force exerted on the outer surface layer of the earth. I am interested in knowing effect of such fatigue load with magnitude and frequency to have an idea of timing of major breakage of earth surface (due to resonance) which may cause seismic/earthquake activities. Recent earthquake disasters indicate increase in likelihood of a series of such events in future. Experts are on the job to sense/monitor seismic activities for early warning but fail in predicting exact timing. In case recent earthquakes are mainly due to fatigue loading due to moon then we may get some success in predicting such event well in time and save human lives. I request the experts in the field to give us feedback on the significant research work done so far in this area. Regards.
A relation between moonquakes and stresses induced by the tides has been investigated for the Moon (e.g., Weber et al. (2009), Constraints on deep moonquake focal mechanisms through analyses of tidal stress, J. Geophys. Res. 114). As for the Earth, there was a recent article on Scientific American (http://www.scientificamerican.com/article/can-astronomical-tidal-forces-trigger-earthquakes/).
Thank you Mr. Sebastiano. Let me go through. All of us are worried about a series of repeated earthquakes in Nepal and India.
Now, I have finished reading of the article. Focus of the article is on research to predict earthquake indirectly (i.e. gravitational pull by sun & moon can cause rise of ocean water as tide which in turn stress the land pieces to move causing earthquake. Although, not proven, but seems logical. As yesterday earthquake took place in Nepal around noon as predicted in case of pulling by sun. I have view on direct frequent pulling of earth upper surface layer (may be very small movement but very high frequency). This may result in fatigue failure of plates causing seismic disturbance. I need quantitative research, which can be utilized for forecasting major earthquake. Let us try to get some theory and have proving.
Sohail Hello
Without hesitation, Moon-Sun gravity-magnetic (and other) effects may influence (together with other factors) seismolic activity. However, in each concrete situation all possible geological-geophysical and cosmological factors must be taken into account.
You can find some interesting facts about Moon-Sun influence to some atmospheric phenomena in our papers placed in the ResearchGate:
Eppelbaum, L.V., 2013. Non-stochastic long-term prediction model for US tornado level. Natural Hazards, 69, No. 3, 2269-2278.
Eppelbaum, L. and Isakov, A., 2015. Implementation of the geo-correlation methodology for predictability of catastrophic weather events: long-term US tornado season and short-term hurricanes. Environmental Earth Sciences, 74, 1-13, doi: 10.1007/s12665-015-4373-z.
Best regards,
Lev
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