Publications


2022

  • Helmstetter, A. (2022) Repeating low frequency icequakes in the Mont-Blanc massif triggered by snowfall, Submitted to J. Geophys. Res. Earth Surface, July 2022, hal-03754592, doi:10.1002/essoar.10512193.1.
  • Hendrickx, H. ; Le Roy, G. ; Helmstetter, A. ; Pointner, E. ; Larose, E. ; Braillard, L. ; Nyssen, J. ; Delaloye, R. ; Frankl, A. (2022), Timing, volume and precursory indicators of rock- and cliff fall on a permafrost mountain ridge (Mattertal, Switzerland), Earth Surface Processes And Landforms, https://doi.org/10.1002/esp.5333, hal-03603637,
  • Minetto, R., Helmstetter, A., Schwartz, S., Langlais, M., Nomade, J., and Gu ́eguen, P. (2022). Analysis of the spatiotemporal evolution of the Maurienne swarm (French Alps) based on earthquake clustering. Earth and Space Science, 9, e2021EA002097. https://doi.org/10.1029/2021EA002097, hal-03753320

2021

  • Gimbert, F., U. Nanni, P. Roux, A. Helmstetter, S. Garambois, A. Lecointre, A. Walpersdorf, B. Jourdain, M. Langlais, O. Laarman, F. Lindner, A. Sergeant, C. Vincent, F. Walter (2021) A Multi‐Physics Experiment with a Temporary Dense Seismic Array on the Argentière Glacier, French Alps : The RESOLVE Project. Seismological Research Letters ; https://doi.org/10.1785/0220200280
  • Guéguen, P. ; Janex, G. ; Nomade, J. ; Langlais, M. ; Helmstetter, A. ; Coutant, O. ; Schwartz, S. ; Dollet, C. (2021), Unprecedented seismic swarm in the Maurienne valley (2017-2019) observed by the SISmalp Alpine seismic network : operational monitoring and management, Comptes Rendus. Géoscience, Acad ́emie des sciences (Paris), Seismicity in France, 353 (S1), 517-534 doi:10.5802/crgeos.70, hal-03633666,
  • Guillemot A., L. Baillet, S. Garambois, X. Bodin, A. Helmstetter, R. Mayoraz, and E. Larose (2021) Modal sensitivity of rock glaciers to elastic changes from spectral seismic noise monitoring and modeling, The Cryosphere, 15, 501–529,
    https://doi.org/10.5194/tc-15-501-2021
  • Fiolleau, S., Jongmans, D., Bièvre, G. et al. Multi-method investigation of mass transfer mechanisms in a retrogressive clayey landslide (Harmalière, French Alps). Landslides (2021). https://doi.org/10.1007/s10346-021-01639-z

2020

  • Trevlopoulos, K., Gueguen, P., Helmstetter, A., & Cotton, F. (2020). Earthquake risk in reinforced concrete buildings during aftershock sequences based on period elongation and operational earthquake forecasting. Structural Safety, 84, hal-03025682
  • Moreau, L., P. Boué, A. Serripierri, J ́ Weiss, D. Hollis, I. Pondaven, B. Vial, S. Garambois, E. Larose, A. Helmstetter, L. Stehly, G. Hillers, and O. Gilbert (2020) Sea Ice Thickness and Elastic Properties From the Analysis of Multimodal Guided Wave Propagation Measured With a Passive Seismic Array. Journal Of Geophysical Research-Oceans, 125(4), hal-03014333
  • Guillemot, A., Helmstetter, A., Larose, E., Baillet, L., Garambois, S., Mayoraz, R., et al. (2020). Seismic monitoring in the Gugla rock glacier (Switzerland) : ambient noise correlation, microseismicity and modelling. Geophysical Journal International, 221(3), 1719–1735.

2019

  • De Barros, L., Baques, M., Godano, M., Helmstetter A., Deschamps, A., Larroque, C., Courboulex, F. (2019) Fluid-Induced swarms and coseismic stress transfer : a dual Process highlighted in the aftershock sequence of the 7 April 2014 earthquake (Ml 4.8, Ubaye, France), J. Geophys. Res. 12’(4), 3918-3932, DOI:10.1029/2018JB017226
  • Le Roy G., A. Helmstetter, D. Amitrano, F. Guyoton, R. Le Roux-Mallouf (2019) Seismic analysis of the detachment and impact phases of a rockfall and application for estimating rockfall volume and free-fall height, J. Geophys. Res. Earth Surf. 124(11), 2602-2622, https://doi.org/10.1029/2019JF004999

2018

  • Cattania,C., M. J. Werner, W. Marzocchi, S. Hainzl, D. Rhoades, M. Gerstenberger, M. Liukis, W. Savran, A. Christophersen, A. Helmstetter, A. Jimenez, S. Steacy, T. H. Jordan (2018), The forecasting skill of physics‐based seismicity models during the 2010–2012 Canterbury, New Zealand, earthquake sequence, S. Res. Lett. 89 (4), 1238-1250, https://doi.org/10.1785/0220180033
  • Provost, F., J.-P. Malet, C. Hibert, A. Helmstetter, M. Radiguet, D. Amitrano, N.Langet, E. Larose, C. Abancó, M. Hürlimann, T. Lebourg, C. Levy, G. Le Roy, P. Ulrich, M. Vidal, and B.Vial (2018), Towards a standard typology of endogenous landslide seismic sources, in press in Earth Surface Dynamics, https://doi.org/10.5194/esurf-2018-23
  • Provost F., J.-P. Malet, J. Gance, A. Helmstetter, C. Doubre (2018), Automatic approach for increasing the location accuracy of slow-moving landslide endogenous seismicity : the APOLoc method, Geophys. J. Int., 215( 2), 1455–1473, https://doi.org/10.1093/gji/ggy330

2017

  • Helmstetter A. and G. Janex (2017), Ecoute sismique et acoustique du mouvement de terrain de Séchilienne (Massif de Belledonne), ”Métrologie en Milieu Extrême”, Collection EDYTEM n°19, 271-278 (pdf)
  • Marsan, D. and A. Helmstetter (2017), How variable is the number of triggered aftershocks ?, J. Geophys. Res., 122(7), 5544–5560, doi:10.1002/2016JB013807.
  • Goitom, B., M. J. Werner, K. Goda, J.‐M. Kendall, J. O. S. Hammond, G. Ogubazghi, C. Oppenheimer, A. Helmstetter, D.Keir, and F.Illsley‐Kemp (2017)
    Probabilistic Seismic‐Hazard Assessment for Eritrea,
    Bull. Seism. Soc. Am., 107(3), 1478-1494, doi :10.1785/0120160210
  • Bottelin, P , L. Baillet, E. Larose, D. Hantz, D. Jongmans, O. Brenguier, H. Cadet, A. Helmstetter (2017) Monitoring rock reinforcement with ambient vibrations : La Bourne case study (Vercors, France) Engineering Geology 2017.

2016

  • Reverso, T., D. Marsan, A. Helmstetter, and B. Enescu (2016)
    Background seismicity in Boso peninsula, Japan : long-term acceleration, and relationship with slow slip events, Geophys. Res. Lett. 43, 5671-5679, doi : 10.1002/2016GL068524 (pdf)
  • Raimondi, F, Comon, P, Michel, O, Sahnoun, S, and Helmstetter, A (2016)
    Tensor decomposition exploiting diversity of propagation velocities : Application to localization of icequake events, Signal Processing 118, 75-88, doi:10.1016/j.sigpro.2015.06.015.
  • Roeoesli, C., A. Helmstetter, F. Walter and E. Kissling (2016)
    Meltwater influences on deep stick-slip icequakes near the base of the Greenland Ice Sheet, J. Geophys. Res. Earth Surf. 121, doi:10.1002/2015JF003601. (draft)

2015

  • Helmstetter, A., B. Nicolas, P. Comon and M. Gay (2015),
    Basal icequakes recorded beneath an Alpine glacier (Glacier d’Argentière, Mont Blanc, France) : evidence for stick-slip motion ? J. Geophys. Res. Earth Surf. 120, 379-401, doi:10.1002/2014JF003288
    (draft)
  • Helmstetter, A., L. Moreau, B. Nicolas, P. Comon and M. Gay (2015),
    Intermediate-depth icequakes and harmonic tremor
    in an Alpine glacier (glacier d’Argentière, France) :
    evidence for hydraulic fracturing ?
    J. Geophys. Res. Earth Surf. 120, 402-416, doi:10.1002/2014JF003289
    (draft)
  • Walpersdorf, A., C. Sue, S. Baize, N. Cotte, P. Bascou, C. Beauval, P. Collard, G. Daniel, H. Dyer, J.-R. Grasso, O. Hautecoeur, A. Helmstetter, S. Hok, c, M. Langlais, G. Menard, Z. Mousavia, F. Ponton, M. Rizza, L. Rolland, D. Souami, L. Thirard, P. Vaudey, C. Voisin, J. Martinod (2015)
    Coherence between geodetic and seismic deformation in a context of slow tectonic activity (SW Alps, France),
    Journal of Geodynamics, 85, 58–65, doi:10.1016/j.jog.2015.02.001
  • Reverso, T., D. Marsan and A. Helmstetter (2015),
    Detection and characterization of transient forcing episodes affecting earthquake activity in the Aleutian Arc system, E. P. S. L. 412, 25-34
    (pdf)

2014

  • Bottelin, P., D. Jongmans, D. Daudon, A. Mathy, A. Helmstetter, V. Bonilla-Sierra, H. Cadet, D. Amitrano, V. Richefeu, L. Lorier, L. Baillet, P. Villard, and F. Donzé (2014),
    Seismic and mechanical studies of the artificially triggered rockfall at Mount Néron (French Alps, December 2011),
    Nat. Hazards Earth Syst. Sci., 14, 3175-3193, 2014,
    doi:10.5194/nhess-14-3175-2014
  • Tasan, H., C. Beauval, A. Helmstetter, A. Sandikkaya, and P. Guéguen (2014),
    Testing probabilistic seismic hazard estimates against accelerometric data in two countries : France and Turkey, Geoph. Journal Int., 198 (3), 1554-1571, ISSN 0956-540X (preprint)
  • Marsan, D., A. Helmstetter, M. Bouchon and P. Dublanchet (2014),
    Foreshock activity related to enhanced aftershock production,
    Geophys. Res. Lett, 41(19), 6652–6658, doi:10.1002/2014GL061219
  • Helmstetter, A and M. Werner (2014),
    Adaptive smoothing of seismicity in time, space and magnitude for time-sependent earthquake forecasts for California,
    Bull. Seism. Soc. Am. 104, No. 2, pp. 809–822, April 2014, doi : 10.1785/0120130105
    (pdf)

2013

  • Marsan, D., T. Reverso, A. Helmstetter, and B. Enescu (2013), Slow slip and aseismic deformation episodes associated with the subducting Pacific plate offshore Japan, revealed by changes in seismicity, J. Geophys. Res. Solid Earth, 118, 4900–4909, doi:10.1002/jgrb.50323.
    (pdf)
  • Marsan, D., E. Prono and A. Helmstetter (2013)
    Monitoring aseismic forcing in fault zones using earthquake time series,
    Bull. Seism. Soc. Am. 103, 169-179, doi:10.1785/0120110304
    (pdf)
  • Tonnellier, A, A Helmstetter, J-P Malet, J Schmittbuhl, A. Corsini and M. Joswig, (2013), Seismic monitoring of soft-rock landslides : the Super-Sauze and Valoria case studies, Geophys. J. Int., doi : 10.1093/gji/ggt039
    (pdf)

2012

  • Helmstetter, A and M. Werner (2012), Adaptive spatio-temporal smoothing of seismicity for long-term earthquake forecasts in California, Bull. Seism. Soc. Am. 102, 2518-2529, doi:10.1785/0120120062 (preprint)
  • Lacroix, P., J.-R. Grasso, J. Roulle, G. Giraud, D. Goetz, S. Morin, and A. Helmstetter (2012), Monitoring of snow avalanches using a seismic array : Location, speed estimation, and relationships to meteorological variables, J. Geophys. Res., 117, F01034,
    doi:10.1029/2011JF002106.

2011

  • Lacroix, P. and A. Helmstetter (2011), Localization of seismic signals associated with micro-earthquakes and rockfalls on the S ́echilienne landslide, French Alps, Bull. Seism. Soc. Am. 101(1), 341-353, doi : 10.1785/0120100110
  • Werner M.J., Helmstetter A., D. D. Jackson, and Y. Y. Kagan (2011)
    High Resolution long-and short-term earthquake forecasts for California,
    Bull. Seism. Soc. Am. 2011, 101 :1630-1648 ; doi :10.1785/0120090340 (pdf)
  • Daniel, G., E. Prono, F. Renard, F. Thouvenot, S. Hainzl, D. Marsan, A. Helmstetter,
    P. Traversa, J.L. Got, L. Jenatton, and R. Guiguet (2011),
    Changes in effective stress during the 2003-2004 Ubaye seismic swarm, France,
    J. Geophys. Res., doi:10.1029/2010JB007551
  • Helmstetter A., G. Ménard, D. Hantz, P. Lacroix, F. Thouvenot et J.-R. Grasso,
    Etude multidisciplinaire d’un effondrement dans la carrière de ciment de Saint-Martin-le-Vinoux,
    Journées Aléa Gravitaires, Strasbourg 7-8 Septembre 2011
  • Helmstetter A., et S. Garambois, Ecoute sismique du mouvement de terrain de Séchilienne,
    Journées Aléa Gravitaires, Strasbourg 7-8 Septembre 2011.

2010

  • Werner, M.J., A. Helmstetter, D. D. Jackson, Y. Y. Kagan, and S. Wiemer. (2010)
    Adaptively Smoothed Seismicity Earthquake Forecasts for Italy,
    Annals of Geophysics 53 (3), 107-116, doi : 10.4401/ag-4839
  • Tatard, L., J.-R. Grasso , A. Helmstetter and S. Garambois (2010)
    Characterization and comparison of landslide triggering in different tectonic and climatic settings,
    J. Geophys. Res., 115, F04040, doi:10.1029/2009JF001624.
  • Helmstetter, A. and S. Garambois, Seismic monitoring of Séchilienne Rockslide (French Alps) :
    analysis of seismic signals and their correlation with rainfalls,
    J. Geophys. Res., 115, F03016, doi:10.1029/2009JF001532 (2010)

2009

  • Helmstetter, A., and B. E. Shaw, Afterslip and aftershocks in the rate-and-state
    friction law, J. Geophys. Res. 114, B01308, doi:10.1029/2007JB005077 (2009)
    (pdf),
    link to JGR)

2007

  • Zhigang Peng, John E. Vidale, Miaki Ishii, Agnes Helmstetter, Anomalous seismicity rate immediately before and after
    mainshock rupture from highfrequency waveforms in Japan,
    J. Geophys. Res. Vol. 112, No. B3, B03306,
    doi:10.1029/2006JB004386 (2007)
  • Helmstetter, A., Y. Kagan and D. Jackson, High-resolution
    time-independent forecast for M>5 earthquakes in California,
    Seism. Res. Lett.,78, 59-67, 2007

2006

  • Amitrano, D. and A. Helmstetter, Brittle creep, damage and
    time-to-failure in rocks, J. Geophys. Res.,111, B11201, doi:10.1029/2005JB004252 (2006).
    (pdf)
  • Helmstetter, A., Y. Kagan and D. Jackson, Comparison of
    short-term and long-term earthquake forecast models for Southern
    California,Bull. Seism. Soc. Am. 96, 90-106 (2006)
    (pdf)
  • Helmstetter, A., and B. E. Shaw, Relation between stress heterogeneity and aftershock rate in the rate-and-state model,
    J. Geophys. Res., 111, B07304, doi:10.1029/2005JB004077 (2006)
    (http://www.arxiv.org/abs/physics/0509252)

2005

  • Nechad, H., A. Helmstetter, R. El Guerjouma and D.
    Sornette, Andrade and critical time-to-failure laws in fiber-matrix
    composites : experiments and model, Journal of Mechanics and Physics of Solids, 53(5), 1099-1127 (2005)
    (http://www.arxiv.org/abs/cond-mat/0404035).
  • Helmstetter, A., Y. Kagan and D. Jackson, Importance of
    small earthquakes for stress transfers and earthquake triggering, J.
    Geophys. Res., 110, B05S08, 10.1029/2004JB003286 (2005)
    (http://www.arxiv.org/abs/physics/0407018).
  • Saichev, A., A. Helmstetter and D. Sornette, Power Law
    Distributions of Offspring and Generation Numbers in Branching Models of Earthquake Triggering,
    Pure. Appl. Geophys., 162, 1113-1134 (2005)
    (http://www.arxiv.org/abs/cond-mat/0305007).

2004

  • Helmstetter, A., D. Sornette, J.-R. Grasso, J. V. Andersen,
    S. Gluzman and V. Pisarenko, Slider-block friction model for
    landslides:implication for prediction of mountain collapse,
    J. Geophys. Res. 109, B02409, 10.1029/2002JB002160 (2004)
    (http://www.arxiv.org/abs/cond-mat/0208413).
  • Sornette, D., A. Helmstetter, J. V. Andersen, S. Gluzman,
    J. -R. Grasso and V. Pisarenko,Towards landslide prediction :
    two case studies, Physica A,338, 605-632 (2004)
    (http://www.arxiv.org/abs/physics/0305067).
  • Helmstetter, A., S. Hergarten and D.
    Sornette,Properties of foreshocks and aftershocks of the
    non-conservative SOC Olami-Feder-Christensen model : triggered or
    critical earthquakes ?, Phys. Rev. E, 70, 046120, 2004
    (http://www.arxiv.org/abs/cond-mat/0312689).

2003

  • Helmstetter, A., D. Sornette, and J.-R. Grasso, Mainshocks
    are aftershocks of conditional foreshocks : How do foreshock statistical
    properties emerge from aftershock laws, J. Geophys. Res., 108, 2046, doi:10.1029/2002JB001991 (2003)
    (http://www.arxiv.org/abs/cond-mat/0205499)
  • Dussauge-Peissier, C.,J.-R. Grasso, and A. Helmstetter, Statistical analysis of rockfall volume distribution :
    implication for rockfall dynamics, J. Geophys. Res., 108, 2286, doi:10.1029/2001/JB000650 (2003)
    (pdf)
  • Helmstetter, A., and D. Sornette, Importance of direct and
    indirect triggered seismicity in the ETAS model of seismicity, Geophys.
    Res. Lett., 30, 1576, doi:1029/2003GL017670 (2003)
    (http://www.arxiv.org/abs/physics/0303070).
  • Helmstetter, A., G. Ouillon and D. Sornette, Are
    aftershocks of large californian earthquakes diffusing ?, J.
    Geophys. Res., 108, 2483, 10.1029/2003JB002503 (2003)
    (http://www.arXiv.org/abs/physics/0303075.
  • Helmstetter, A. and D. Sornette, Bath’s law derived from the Gutenberg-Richter law and from aftershock properties,
    Geophys. Res. Lett., 30, 2069, 10.1029/2003GL018186
    (2003) (http://www.arxiv.org/abs/physics/0307083).

2002

  • Dussauge-Peissier, C., A. Helmstetter, J.-R. Grasso, D. Hanz,P. Desvarreux, M. Janin and A. Giraud, Probabilistic approach to rock fall hazard assessment : potential of historical data analysis, Natural Hazard and Earth Sciences, 2, 1-13 (2002) ((pdf)
  • Helmstetter, A. and D. Sornette, Sub-critical and supercritical regimes in epidemic
    models of earthquake aftershocks,J. Geophys. Res., 107, doi:10.1029/2001JB001580 (2002)
    (http://www.arxiv.org/abs/cond-mat/0109318)
  • Sornette, D. and A. Helmstetter, Occurrence of finite-time singularities in epidemic models of rupture, earthquakes and starquakes, Phys. Rev. Lett., 89, 158501 (2002) (http://arXiv.org/abs/cond-mat/0112043)
  • Helmstetter, A. and D. Sornette, Diffusion of epicenters of earthquake aftershock, Omori law and generalized continuous-time random walk model, Phys. Rev. E., 66, 061104 (2002) (http://www.arxiv.org/abs/cond-mat/0203505)