Cedric Twardzik

Lecturer
22
Documents

Présentation

How do faults release the stresses they have accumulated over tens or hundreds of years? This is the main question that has motivated my research. I have used seismological and geodetic observations combined with modelling approaches to infer how faults slip at depth. In particular, I have focused on the pre-seismic phase (i.e. how earthquakes start), the co-seismic phase (i.e. how earthquakes propagate and stop), and the post-seismic phase (i.e. how faults continue to relax after rupture).

Domaines de recherche

Géophysique [physics.geo-ph]

Publications

12
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4
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1

Publications

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On the emergence of fault afterslip during laboratory seismic cycles

Corentin Noël , Cedric Twardzik , Pierre Dublanchet , François Passelègue

Earth and Planetary Science Letters, 2025, 658, pp.119288. ⟨10.1016/j.epsl.2025.119288⟩

Article dans une revue hal-04985988v1

Direct estimation of earthquake source properties from a single CCTV camera

Soumaya Latour , Mathias Lebihain , Harsha Bhat , Cédric Twardzik , Quentin Bletery et al.

Science, 2025, 390 (6772), pp.463-467. ⟨10.1126/science.adz1705⟩

Article dans une revue hal-05342274v1
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Kinematic Inversion of Aseismic Fault Slip During the Nucleation of Laboratory Earthquakes

P. Dublanchet , François Passelègue , H. Chauris , A. Gesret , C. Twardzik et al.

Journal of Geophysical Research : Solid Earth, 2024, 129 (12), ⟨10.1029/2024JB028733⟩

Article dans une revue hal-04843964v1
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Revisiting the 2015 M<sub>w</sub> = 8.3 Illapel earthquake: unveiling complex fault slip properties using Bayesian inversion

E. Caballero , Z. Duputel , Cedric Twardzik , L. Rivera , E. Klein et al.

Geophysical Journal International, 2023, 235 (3), pp.2828-2845. ⟨10.1093/gji/ggad380⟩

Article dans une revue insu-04582011v1
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Transient Brittle Creep Mechanism Explains Early Postseismic Phase of the 2011 Tohoku‐Oki Megathrust Earthquake: Observations by High‐Rate GPS Solutions

Axel Periollat , Mathilde Radiguet , Jérôme Weiss , Cédric Twardzik , David Amitrano et al.

Journal of Geophysical Research : Solid Earth, 2022, 127 (8), pp.e2022JB024005. ⟨10.1029/2022JB024005⟩

Article dans une revue hal-04420761v1
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Bayesian inference on the initiation phase of the 2014 Iquique, Chile, earthquake

Cedric Twardzik , Zacharie Duputel , Romain Jolivet , Emilie Klein , Paul Rebischung

Earth and Planetary Science Letters, 2022, 600, pp.117835. ⟨10.1016/j.epsl.2022.117835⟩

Article dans une revue hal-03845898v1
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Seismic and Aseismic Fault Slip During the Initiation Phase of the 2017 Mw=6.9 Valparaíso Earthquake

Emmanuel Caballero , Agnès Chounet , Zacharie Duputel , Jorge Jara , Cedric Twardzik et al.

Geophysical Research Letters, 2021, 48 (6), ⟨10.1029/2020GL091916⟩

Article dans une revue hal-03431936v1
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Locating surface deformation induced by earthquakes using GPS, GLONASS and Galileo ionospheric sounding from a single station

Florian Zedek , Lucie Rolland , T. Dylan Mikesell , Anthony Sladen , Bertrand Delouis et al.

Advances in Space Research, 2021, 68 (8), pp.3403-3416. ⟨10.1016/j.asr.2021.06.011⟩

Article dans une revue hal-03452276v1
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Very early identification of a bimodal frictional behavior during the post-seismic phase of the 2015 Mw 8.3 Illapel, Chile, earthquake

Cedric Twardzik , Mathilde Vergnolle , Anthony Sladen , Louisa Tsang

Solid Earth, 2021, 12, pp.2523-2537. ⟨10.5194/se-12-2523-2021⟩

Article dans une revue hal-03447477v1

Imaging of Seismogenic Asperities of the 2016 ML 6.0 Amatrice, Central Italy, Earthquake Through Dynamic Rupture Simulations

Hideo Aochi , Cedric Twardzik

Pure and Applied Geophysics, 2020, 177 (5), pp.1931-1946. ⟨10.1007/s00024-019-02199-z⟩

Article dans une revue hal-02859878v1
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Imaging rapid early afterslip of the 2016 Pedernales earthquake, Ecuador

Louisa L.H. Tsang , Mathilde Vergnolle , Cedric Twardzik , Anthony Sladen , Jean-Mathieu Nocquet et al.

Earth and Planetary Science Letters, 2019, 524, pp.115724. ⟨10.1016/j.epsl.2019.115724⟩

Article dans une revue hal-02326771v1
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Kinematics of the 2012 Ahar–Varzaghan complex earthquake doublet (Mw6.5 and Mw6.3)

S Momeni , A Aoudia , S Tatar , C. Twardzik , S Madariaga

Geophysical Journal International, 2019, 217 (3), pp.2097-2124. ⟨10.1093/gji/ggz100⟩

Article dans une revue hal-02200828v1
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Unravelling the contribution of early postseismic deformation using sub-daily GNSS positioning

Cedric Twardzik , Mathilde Vergnolle , Anthony Sladen , Antonio Avallone

Scientific Reports, 2019, 9 (1), pp.1775. ⟨10.1038/s41598-019-39038-z⟩

Article dans une revue hal-04420722v1
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Preparing for InSight: Evaluation of the Blind Test for Martian Seismicity

Martin van Driel , Savas Ceylan , John Francis Clinton , Domenico Giardini , Hector Alemany et al.

Seismological Research Letters, 2019, 90 (4), pp.1518-1534. ⟨10.1785/0220180379⟩

Article dans une revue hal-02365912v1
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Exploring the uncertainty range of coseismic stress drop estimations of large earthquakes using finite fault inversions

Mareike Adams , Cedric Twardzik , Chen Ji

Geophysical Journal International, 2017, 208 (1), pp.86-100. ⟨10.1093/gji/ggw374⟩

Article dans une revue hal-04420718v1

The Earthquake‐Source Inversion Validation (SIV) Project

Martin Mai , Danijel Schorlemmer , Morgan Page , Jean‐paul Ampuero , Kimiyuki Asano et al.

Seismological Research Letters, 2016, 87 (3), pp.690 - 708. ⟨10.1785/0220150231⟩

Article dans une revue hal-01692238v1
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Modeling of the coseismic electromagnetic fields observed during the 2004 M w 6.0 Parkfield earthquake

Yongxin Gao , Jerry M Harris , Jian Wen , Yihe Huang , Cedric Twardzik et al.

Geophysical Research Letters, 2016, 43 (2), pp.620-627. ⟨10.1002/2015GL067183⟩

Article dans une revue hal-04417220v1
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InSAR measurement of the deformation around Siling Co Lake: Inferences on the lower crust viscosity in central Tibet

Marie‐pierre Doin , Cédric Twardzik , Gabriel Ducret , Cécile Lasserre , Stéphane Guillaso et al.

Journal of Geophysical Research : Solid Earth, 2015, 120 (7), pp.5290-5310. ⟨10.1002/2014JB011768⟩

Article dans une revue hal-04417179v1
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Rupture history of 2014 Mw 6.0 South Napa earthquake inferred from near‐fault strong motion data and its impact to the practice of ground strong motion prediction

Chen Ji , Ralph J Archuleta , Cedric Twardzik

Geophysical Research Letters, 2015, 42 (7), pp.2149-2156. ⟨10.1002/2015gl063335⟩

Article dans une revue hal-04416186v1
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Inversion for the physical parameters that control the source dynamics of the 2004 Parkfield earthquake

C. Twardzik , S. Das , R. Madariaga

Journal of Geophysical Research : Solid Earth, 2014, 119 (9), pp.7010-7027. ⟨10.1002/2014jb011238⟩

Article dans une revue hal-04391290v1
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Robust features of the source process for the 2004 Parkfield, California, earthquake from strong-motion seismograms

C. Twardzik , R. Madariaga , S. Das , S. Custódio

Geophysical Journal International, 2012, 191 (3), pp.1245-1254. ⟨10.1111/j.1365-246x.2012.05653.x⟩

Article dans une revue hal-04391282v1
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Study of the earthquake source process and seismic hazards

Cédric Twardzik

Geophysics [physics.geo-ph]. University of Oxford, 2014. English. ⟨NNT : ⟩

Thèse tel-04429054v1