ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 01 NO. 02 OCTOBER 2012:

Title:         Conceptualization of role of shearing stress in understanding Earthquake mechanism
Authors:   Umesh Prasad Verma, P. Hollis Watts, Amitabh Sharma
Abstract: Approximately at 1000km depth in Mantle, enhanced thermal energy (probably generated due to influence of gravitational force associated with astrophysical sources) leads to shearing stress1.The maximum shearing stress outbreaks into two possible (at least) components: tangential and radial.2 The tangential always exceeds the radial at least by 120 Mpa. Such an enhancement results in propagation of sufficient amount of
seismic energy, through the overlying stratum, away from the initiation point of shearing stress. The combined influence of internal friction (Columbian friction μ)3 of overlying stratum, temporal extra-terrestrial gravitational pull (viz. by moon)4 and acceptable creep rate of straining stratum5 ,stress components exhibit a drop .From such an activity it is probably possible to detect the nature of tangential and radial components` additive orsubtractive effects magnitude and location of a seismic activity. We advocate that knowledge of such an inter relationship between earth system processes would help in better understanding of the genesis of intraplate seismicity and landslides activity [as in Brazilian landslide-14thJan’11].A comprehensive study on this inter relationship between various processes may probably bridge gaps in our understanding of earthquake resultant activities and lead to area specific medium level forecasting, a positive development from the point of earthquake prediction.


Keywords:Tangential stress, Radial stress component, Columbian friction coefficient, Intraplate seismicity,gravitational pull.
Pages:       33-41

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