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).
Nechad,H., A. Helmstetter, R. El Guerjouma and D.
Sornette, Creep ruptures in heterogeneous materials, Phys. Rev. Lett.,
94, 045501 (2005) (http://www.arxiv.org/abs/cond-mat/0404347).
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. and D. Sornette, Comment on "Power-law time
distribution of large earthquakes",Phys. Rev.
Let.,92, 129801 (2004)
(http://www.arxiv.org/abs/physics/0307134).
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
Sornette, D. and A. Helmstetter, Endogeneous
versus exogeneous shocks in systems with memory, Physica A, 318,
577-591 (2003) (http://www.arxiv.org/abs/cond-mat/0206047.
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. and D. Sornette, Predictability in the ETAS model of interacting triggered seismicity,J. Geophys. Res.,
108, 2482, 10.1029/2003JB002485 (2003)
(http://www.arxiv.org/abs/cond-mat/0208597).
Helmstetter, A., and D. Sornette, Foreshocks explained by
cascades of triggered seismicity, J. Geophys. Res., 108, 2457, 10.1029/2003JB002409 (2003)
(http://www.arxiv.org/abs/physics/0210130.
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)