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Global efforts in identifying earthquake (EQ) precursors through adaptation of seismogenic-modification features imprinted on variabilities of the lower atmosphere, ionosphere and beyond, are now well documented. But the inherent complexities of the physical and dynamical processes of this atmospheric system still pose as challenges in generating a reliable EQ predictive model, therefore novel ideas and inductions of relevant new parameters are always welcome as additional inputs to such study. The paper is framed with these aims by looking into the role of EQ preparatory processes on the lower atmospheric wind flow pattern with special reference to very strong magnitude Tohoku seismic event of March 2011. The analysis however is not quantitative yet, but it attempts to provide an additional prelude parameter along with already identified features induced by this EQ on Total Electron Content (TEC), ionisation density (foF2) of upper atmosphere and structure constant parameter (Cn 2 ) of lower atmosphere. The wind being considered as a rich source carrying atmospheric disturbance information, the paper discusses how the likely response of the wind system (to EQ) could provide seismic time dynamical information of the atmospheric environment for building up future comprehensive EQ predictive model.

Earthquake time tropospheric wind flow pattern: a supplement to the upper atmospheric preludes during strong Tohoku earthquake event of March 2011