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Article Dans Une Revue Earth and Planetary Science Letters Année : 2007

Small pressure drop triggered near a fault by small teleseismic waves

F.H. Corne
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Résumé

We describe a pressure transient triggered near an active fault by seismic waves generated more than 10 000 km away during the 2003 Mw = 7.8 Rat Island earthquake. In contrast with previous similar observations, the pressure drop occurs simultaneously with the arrival of S waves, and not during the passage of the Rayleigh waves that have larger amplitudes and smaller frequencies. This small 60 Pa drop is compatible with a small slip on the fault, which induced either dilatant damage or a transient disruption in the impermeable barrier the fault constitutes.

Dates et versions

hal-00311153 , version 1 (13-08-2008)

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M.L. Doan, F.H. Corne. Small pressure drop triggered near a fault by small teleseismic waves. Earth and Planetary Science Letters, 2007, 258, pp.207-218. ⟨10.1016/j.epsl.2007.03.036⟩. ⟨hal-00311153⟩
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