Eikonal surface wave tomography of central and eastern China

Autor: Pengxiang Zhou, Sébastien Chevrot, Maximilien Lehujeur, Shaohong Xia, Chunquan Yu

Publikováno v: Geophysical Journal International
Geophysical Journal International, 2022, 231 (3), pp.1865-1879. ⟨10.1093/gji/ggac296⟩

SUMMARY Eikonal tomography has become a key approach to image lithospheric structures with surface waves recorded by dense regional arrays. Its main advantage is that phase velocities can be determined directly from phase measurements without resolvi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5b83724a4d0fa01c0981b6c4e956f72
https://doi.org/10.1093/gji/ggac296

Eikonal surface wave tomography with smoothing splines—application to Southern California

Autor: Sébastien Chevrot, Maximilien Lehujeur

Publikováno v: Geophysical Journal International
Geophysical Journal International, 2022, 229 (3), pp.1927-1941. ⟨10.1093/gji/ggac034⟩

SUMMARY The densification of both permanent and temporary seismic networks has raised new interest in surface wave eikonal tomography from which phase velocity maps can be obtained without resolving a tomographic inverse problem. However, eikonal tom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59919cf664e07420179882d4e67a5899
https://doi.org/10.1093/gji/ggac034

Automated Earthquake Detection and Local Travel Time Tomography in the South-Central Andes (32-35°S): Implications for Regional Tectonics

Autor: Jean‐Baptiste Ammirati, Antonio Villaseñor, Sébastien Chevrot, Gabriel Easton, Maximilien Lehujeur, Sergio Ruiz, María Constanza Flores

Publikováno v: Digital.CSIC. Repositorio Institucional del CSIC
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20 pages, 9 figures, 1 table, supporting information https://doi.org/10.1029/2022JB024097.-- Data Availability Statement: Raw seismic waveforms used in this study are available from the IRIS platform (https://ds.iris.edu/ds/nodes/dmc/). Network codes

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::234703084443c0d53d60f094af1bb61a
http://hdl.handle.net/10261/269464

Probing depth and lateral variations of upper-mantle seismic anisotropy from full-waveform inversion of teleseismic body-waves

Autor: Stephen Beller, Sébastien Chevrot

Publikováno v: Geophysical Journal International
Geophysical Journal International, Oxford University Press (OUP), In press
Geophysical Journal International, Oxford University Press (OUP), 2020, 222 (1), pp.352-387. ⟨10.1093/gji/ggaa069⟩
Geophysical Journal International, 2020, 222 (1), pp.352-387. ⟨10.1093/gji/ggaa069⟩

SUMMARY While seismic anisotropy can potentially provide crucial insights into mantle dynamics, 3-D imaging of seismic anisotropy is still a challenging problem. Here, we present an extension of our regional full-waveform inversion method to image se

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e45ec4016fd84cc885dfed5234d36605
https://doi.org/10.1093/gji/ggaa069

Upper mantle structure under the Zagros collision zone; insights from 3D teleseismic P-wave tomography

Autor: Madjid Abbasi, Mohammad Veisi, Sébastien Chevrot, Esmaeil Shabanian, Farhad Sobouti

Publikováno v: Tectonophysics
Tectonophysics, Elsevier, 2021, ⟨10.1016/j.tecto.2021.229106⟩
Tectonophysics, 2021, ⟨10.1016/j.tecto.2021.229106⟩

International audience; We map the lateral variations of P-wave velocity beneath the Zagros collision zone in Iran down to 800 km depth by regional travel time tomography. We invert 32,293 relative travel time residuals from five temporary seismic ne

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ce49a410ce322ec731d93af38a7a6d
https://hal.archives-ouvertes.fr/hal-03374771/document