Near-field TEC response to the main shock of the 2008 Wenchuan earthquake
Abstract
We have registered near-field TEC response to the Wenchuan earthquake on 12 May 2008, for the first time. We found that an intensive N-shape shock-acoustic wave with a plane waveform and with half-period of about 200 sec propagated south-eastward with a velocity of 600 m/s for distance about 1000 km. The wavefront of N-shaped disturbance was parallel with the earthquake rupture direction (from SW to NE). The main directional lobe of shock-acoustic wave emitter is directed southeastward, i.e. transversely to the rupture. We suppose that the above properties of TEC response are determined by the geodynamics of the Wenchuan earthquake.
Domains
Geophysics [physics.geo-ph]
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Afraimovich2010_Article_Near-fieldTECResponseToTheMain.pdf (721.05 Ko)
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