Double-difference tomographic methods use directly accurate time delays computed between similar signals. Such methods are designed to image very heterogeneous media, such as volcanoes or fault zones. In seismological applications, similar signals are recorded at a given station from earthquakes sharing similar and close-by sources. In seismic...
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2008 (v1)Journal articleUploaded on: December 3, 2022
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January 24, 2008 (v1)Journal article
Hawaiian volcanoes are formed by the eruption of large quantities of basaltic magma related to hot-spot activity below the Pacific Plate1,2. Despite the apparent simplicity of the parent process—emission of magma onto the oceanic crust—the resulting edifices display some topographic complexity3–5. Certain features, such as rift zones and large...
Uploaded on: February 28, 2023 -
September 13, 2015 (v1)Conference paper
Full Waveform Inversion is a high-resolution imaging method that has raised considerable interest in the oil industry since a decade. It has been mainly used as a P-wave velocity modeling building tool, while extension to multi-parameter elastic anisotropic reconstruction is now an active field of research. In this context, designing...
Uploaded on: December 4, 2022 -
July 2, 2015 (v1)Journal article
Computationally efficient 3-D frequency-domain full waveform inversion (FWI) is applied to ocean-bottom cable data from the Valhall oil field in the visco-acoustic vertical transverse isotropic (VTI) approximation. Frequency-domain seismic modelling is performed with a parallel sparse direct solver on a limited number of computer nodes. A...
Uploaded on: December 4, 2022 -
April 2022 (v1)Journal article
he goal of this work presented in a two-companion paper is to pave the way for reliably assessing the risks of damage to buildings on the shore, induced by the detonation of large-charge historical ordnance (i.e., countermining) in variable shallow water environments. Here, we focus on the impact of the marine environment, more specifically the...
Uploaded on: December 3, 2022 -
June 1, 2015 (v1)Conference paper
We present a 3D time-domain target-oriented elastic full-waveform inversion method well-adapted to the reconstruction of lithospheric images from passive teleseismic data. In teleseismic configurations, sources no longer correspond to point sources embedded in the lithospheric target but rather correspond to a nearly plane wavefronts generated...
Uploaded on: December 4, 2022 -
October 26, 2017 (v1)Conference paper
International audience
Uploaded on: February 28, 2023 -
December 7, 2020 (v1)Conference paper
Explosive devices from World War II are discovered almost every week on the French coasts and they must be destroyed by the French Navy Mine Warfare Office. The consequences of the counter-mining on the marine environment are complex to evaluate. Depending on the environment geology, the explosive charges and their localization, the...
Uploaded on: December 4, 2022 -
June 25, 2023 (v1)Conference paper
Unexploded historical ordnance (UXO) from World War II, that is discovered almost every week close to the French coast, must be destroyed quickly after discovery to ensure the safety of divers and ships. The favored destruction method is countermining, i.e., the use of a high-order detonation conducted by exploding an additional donor charge...
Uploaded on: October 11, 2023