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Journal Articles Geophysical Research Letters Year : 2003

Ionospheric remote sensing of the Denali Earthquake Rayleigh surface waves

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Abstract

Using the Global Positioning System, we have detected ionospheric disturbances associated with the long-period Rayleigh waves from the 2002 Denali earthquake (M s = 7.9). The dense California GPS networks allowed us to map the ionospheric perturbations and to compute the group velocity with a high spatial resolution above the Pacific coasts. Due to a low sampling rate, a large error in the velocity determination remains. Nonetheless, it demonstrates that bi-static remote sensing measurements of seismic waves with GPS networks can be performed. Monostatic measurements with a dedicated satellite could possibly be used to record in the ionosphere surface waves originating from large earthquakes. Such a space-based remote sensing of the local group velocity of Rayleigh surface waves would effectively complement the seismic networks for high-resolution global tomography of the Earth's lithosphere.
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Dates and versions

hal-03916873 , version 1 (31-12-2022)

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Vesna Ducic, Juliette Artru, Philippe Lognonné. Ionospheric remote sensing of the Denali Earthquake Rayleigh surface waves. Geophysical Research Letters, 2003, 30, ⟨10.1029/2003gl017812⟩. ⟨hal-03916873⟩
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