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Pattern of stress-strain accumulation due to a long dipslip fault movement in a viscoelastic layered model of the lithosphere–asthenosphere system

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Języki publikacji
EN
Abstrakty
EN
The process of stress accumulation near earthquake faults during the aseismic period in between two major seismic events in seismically active regions has become a subject of research during the last few decades. In the present paper a long dip -slip fault is taken to be situated in a viscoelastic layer over a viscoelastic half space representing the lithosphere-asthenosphere system. A movement of the dip-slip nature across the fault occurs when the accumulated stress due to various tectonic reasons, e.g., mantle convection etc., exceeds the local friction and cohesive forces across the fault. The movement is assumed to be slipping in nature, expressions for displacements, stresses and strains are obtained by solving the associated boundary value problem with the help of integral transformation and Green's function method. A detailed study of these expressions may give some ideas about the nature of stress accumulation in the system, which in turn will be helpful in formulating an earthquake prediction programme.
Rocznik
Strony
653--670
Opis fizyczny
Bibliogr. 40 poz., wykr.
Twórcy
  • Department of Basic Science and Humanities Meghnad Saha Institute of Technology (A unit of Techno India Group) Nazirabad P.O., Uchhepota Via- Sonarpur, Kolkata-700150, India
autor
  • Department of Applied Mathematics University of Calcutta 92, APC Road, Kolkata 700009, India
Bibliografia
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  • Debnath S.K and Sen S. (2013): Two interacting creeping vertical rectangular strike-slip faults in a viscoelastic half space model of the lithosphere. – IJSER, vol.4, No.6, p.(Accepted).
  • Debnath S.K. (2013): A buried vertical rectangular finite fault in a viscoelastic layer over a viscoelastic half-space and its influence on stress-strain accumulation. – JEES (under review).
  • Debnath S.K. and Sen S. (2013): Aseismic ground deformation in a viscoelastic layer overlying a viscoelastic halfspace model of the lithosphere. – Asthenosphere System Geosciences, vol.3(2), pp.60-67.
  • Debnath S.K. and Sen S. (2013): Stress and strain accumulation due to a long dip-slip fault movement in an elastic layer over a viscoelastic half-space model of the lithosphere-asthenosphere system. – International Journal of Geosciences, vol.4, No.3, p.(Accepted).
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  • Ghosh U., Mukhopadhyay A. and Sen S. (1992): On two interacting creeping vertical surface-breaking strike-slip faults in a two-layered model of lithosphere. – Physics of the Earth and Planetary Interior, vol.70, pp.119-129.
  • Maruyama T. (1966): On two dimensional dislocations in an infinite and semi- infinite medium. – Bull. Earthquake Res. Inst. Tokyo Univ., vol.44, (part 3), pp.811-871.
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  • Mukhopadhyay A., Sen S. and Paul B.P. (1980,a): On stress accumulation in a viscoelastic lithosphere containing a continuously slipping fault. – Bull. Soc. Earthquake Technology, vol.17, No.1, pp.1-10.
  • Mukhopadhyay A., Sen S. and Paul B.P. (1980a): On stress accumulation near a continuously slipping fault in a two layered model of lithosphere. – Bull. Soc. Earthquake Technology, vol.17, No.4, pp.29-38.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-7c1a4590-d48a-4ef5-aed5-a9361cb4a830
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